Disc Couplings - Rowland Company

Disc Couplings D

D-1

Disc Couplings General Overview

Lovejoy brings to market the best disc coupling yet to be offered. This disc coupling joins the wide range of Lovejoy couplings that are already in use through-
out the world. Lovejoy has teamed up with its partner, Jaure of Zizurki, Spain to offer the disc coupling in several variations to cover all the industrial require-
ments for these low maintenance, long life couplings. The Lovejoy/Jaure disc coupling utilizes the latest design efforts through Finite Element Analysis, exten-
sive testing of materials and couplings, and several years of operational experience in actual applications. The Lovejoy/Jaure disc
coupling is manufactured in the ISO 9001 certified manufacturing facilities of both companies.

The improvements in this coupling come from modifying the disc profile by using the latest Finite Element Analysis. As a result of the development work,
the Lovejoy/Jaure disc coupling 6 bolt type can operate at 1.5° misalignment (see graphs on following pages). The coupling can do so up to 50% torque
capability. The coupling imposes smaller forces on the bearings for a given misalignment and transmits more torque than other competitive couplings.

D Types of couplings include the three piece industrial spacer unit used for general industrial applications and on OEM equipment. The 5-piece drop-out coupling
is specially suited for refinery and API type applications. The close coupled units fit in place of standard gear couplings. The SXGS reduced moment type and
the DIR drop out type can replace gear coupling floating shaft units by matching up to the existing gear coupling rigid hubs mounted on the driver and
driven equipment. Variations to these can also be made as shown on the back pages of this catalog.

Advantages of the Lovejoy/Jaure disc coupling

• No need for lubrication and maintlenance.
• The coupling can be inspected without disassembly. Additionally, the condition of the discs can be checked while the machine is running, using a strobe

light.*
• The machine misalignment can be assessed.
• Torsionally rigid without any backlash.
• No wearing parts, high resistance to harsh environmental conditions.
• Infinite life if properly aligned.
• If misalignment is kept within specified limits, these couplings can last as long as the machines on which they are installed.
• High power density (more torque for a given overall diameter).

It should be noted that disc couplings will impose high axial forces on the thrust bearings if the machines are not properly spaced. The piloting of the disc pack
to the hub is a key factor especially for high speed applications.

The Lovejoy/Jaure disc coupling uses fitted bolts as pilots, but for high speed applications has also found a straight-forward method of piloting the disc packs
to their hubs (see below). By machining rabbets in the washers that are used to unitize the disc pack,** it ensures the repeatability of residual unbalance
standards, as mandated by API 671.

Disc piloting *It is not recommended that the coupling be
operated without a guard.
Note: Specifications are subject to change without notice, and without liability therefore. **Patent Pending.
D-2

Disc Couplings General Overview

The angular misalignment between shafts can vary from 0 to 2 times α as per the figure shown:

offset α = represents the angular
α° misalignment per disc-pack.

offset α (for Lamidisc-6 under 202) = 1.5°
α°
α (for Lamidisc-8) = 0.5°
α (for Lamidisc-10) = 0.4°

α°

2xα°
α°

The discs of the Lovejoy/Jaure couplings are made of high-grade stainless steel (AISI-301), ensuring not only a high strength and high endurance to fatigue, D
but also the resistance to most environmental conditions. Furthermore, discs can be covered with a low friction coefficient coating to improve the resistance to
fretting wear.

The coupling utilizes unitized disc packs with 6, 8 and 10 bolts. The greater the number of bolts, the higher the torque that can be transmitted, but the
coupling can accommodate less misalignment.

The disc couplings can be fitted with overload bushings which serve as an anti-flail device.

The Lovejoy/Jaure couplings are offered in a variety of configurations to fit most applications. In addition, our engineering department can customize a
coupling to special requirements: close-cropped, drop-out, electrically insulated, vertical mounting, safety couplings, etc. A notable design is our Lovejoy/Jaure
reduced moment coupling, that not only has the anti-flail device mandated by API 610, but offers a low weight and a short center of gravity
to bearing distance.

The design and manufacture of the disc coupling is integrated into a certified Quality System according to ISO 9001 to fulfill the high quality requirements of
Lovejoy/Jaure disc couplings.

Different disc profiles

D-3

Disc Couplings Selection Data

Selection procedure

1. Select the coupling type.

2. Select the driven machine service factor SFA from Table 1.
3. Select the driving machine service factor SFD from Table 2.
Care should be taken when the driving machine is other than a standard electric motor or turbine. Some engines will impose extra fluctuations on the drive

system and allowance should be made accordingly. Please refer to Table 2. A torsional coupling may be required for diesel drives.

The two service factors SFA and SFD must be added resulting in the combined service factor SF. SF = SFA + SFD
Driven machine service factor SFA Table 1.

Driven equipment SFA MARINE APPLICATIONS 2.5 Tube and welding machines 2.0
Winding machines 1.5
BLOWERS , FANS MINING AND STONES Wire drawing benches 1.5

Centrifugal 1.0 Crushers 2.5 RUBBER INDUSTRY 1.75
Lobe / Vane / Turboblowers 1.25 Mills 2.5 2.0
Forced draught fans 1.5 Mine ventilators 2.0 Extruder 2.5
Induc.draught with damper 1.5 Vibrators 1.5 Calender
Induc.draught without control 2.0 Mixing mill / Refiner / Crusher
Cooling towers 2.0 OIL INDUSTRY
STEEL PLANTS
CHEMICAL INDUSTRY Pipeline pumps 1.5 1.5
Rotary drilling equipment 2.0 Blast furnace blowers 2.5
Converters 2.0
Agitators (thin liquid) 1.0 PAPER INDUSTRY Inclined blast furnace elev. 2.0
Agitators (viscous liquid) 1.5 Crushers
Centrifuges (light) 1.25 Calenders 2.0
Centrifuges (heavy) 1.75 Couches 2.0 TEXTILE MACHINES 1.5
Mixers 1.75 Drying cylinders 2.25 1.5
Pulpers 2.0 Printing and drying machines 1.5
COMPRESSORS Pulp grinders 2.0 Tanning vats 1.5
Suction rolls 2.0 Calenders
Centrifugal 1.0 Wet presses 2.0 Looms
Lobe/Rotary 1.25 Reels 2.0
Turbocompressors 1.75 Agitators 2.0 WATER AND WASTE INDUSTRY 1.5
Reciprocating: Aerators , Screw pumps , Screens. 2.0
1 to 3 cylinders 3.0 PLASTIC INDUSTRY WOOD WORKING MACHINERY
4 or more cylinders 1.75 Trimmers, Barkers , Saws, Planes
Calenders, Crushers , Mixers. 1.75
CONVEYOR, HOISTS, ELEVATORS
PUMPS
Conveyors: The factors in Table 1 are for general guidance and
Screw / Apron / Belt / Chain 1.25 Centrifugal,General Feed or Boiler Feed 1.0 can be modified by customers´ specialist
Bucket / Rotary / Lifts 1.5 knowledge of their own equipment.
Reciprocating 3.0 Centrifugal , Slurry 1.5
Hoists:
Medium duty 2.5 Centrifugal , Dredge 2.0
Heavy duty 3.0
D Elevators: Rotary / Gear / Lobe or Vane 1.5
Centrifugal and gravity disch. 1.25
Reciprocating :

1 cylinder 3.0 Driving machine service factor SFD Table 2.

2 cylinder , single acting 2.0

DREDGERS 2.0 2 cylinders , double acting 1.75 Driving equipment SFD
3 cylinders or more 1.5

FOOD INDUSTRY ROLLING MILLS Multi-cylinder engine

Billet shears 2.5 8 or more 0.5
Chain transfers 1.5
Packaging machines and fillers. 1.25 6 1.0
Kneading machines. 1.5
Cane crushers 1.5 Cold rolling mills 2.0 4 or 5 1.5
Cane cutters 1.5 Continuous casting plants 2.5
Cane mills 2.0 Cooling beds 1.5 Less than 4 Refer to Lovejoy
Sugar beet cutters 1.5 Cropping shears 2.0
Sugar beet washing machines 1.5 Cross transfers 1.5 Variable speed motors 0.8
Descaling machines 2.0 Electric motors1 and turbines 0
Heavy and medium duty mills 3.0
GENERATORS Ingot and blooming mills 2.5 1Except variable speed motors
Ingot handling machinery 2.5
Even load 1.0 Please consult our Application Engineering
Frequency converters 1.5 Ingot pushers 2.5 Department if axial excitations are foreseeable
Welding generators 2.0 Manipulators 2.0 either on the driving or driven side.
Plate shears 2.0
MACHINE TOOLS Roller adjustment drives 1.5
Roller straighteners 1.5
Main Drives 2.0 Roller tables (heavy) 2.5
Roller tables (light) 1.5
Auxiliary and transverse drives 1.5 Sheet mills 2.5
Trimming shears 1.5
METAL WORKING

Presses / Hammers. 2.0
Straighteners. 2.0
Bending machines / Shears. 1.5
Punching machines 2.0

D-4

Disc Couplings Selection Data

4. Calculate the minimum torque rating as per,

Torque (in-lbs.) = HP x 63025 x SF
n (rpm)

5. The coupling to be selected must have an equal or greater rated torque capacity than the torque calculated in step 4. Check the peak or starting torque
capacity of the selected coupling. For systems which frequently utilize the peak torque capability of the power source, verify that the magnitude of the peak
torque does not exceed twice the rated nominal torque of the coupling selected.

6 Check if existing or predicted axial, angular and offset misalignments are within permissible values as shown in the catalog. The permissible axial
misalignment and torque depend on the angular misalignment as per shown below. (Angular misalignment is given for a disc pack. Axial misalignment is
measured for a complete coupling with two disc packs.)

1.5° 6 Bolts (under 202) 1.5° 6 Bolts (under 202)

1° 6 Bolts (above 202) Angular misalignment 1° 6 Bolts (above 202)

0.5° 8 Bolts 0.6° 0.5° 8 Bolts 0.6°
0.4° 0.3° 0.4° 10 Bolts 0.3°
10 Bolts
° 50% °
50% of max. Max. Axial Displacement Max.
Rated Torque

The listed values represent the total permissible misalignment which may occur during operation. Consult the appropriate operating instructions for allowable
shaft misalignments when installing the coupling.

S- ∆Ka
Kr
Kw D

L S+ ∆Ka

Angular and Radial Misalignment Axial Misalignment

The permissible offset or radial misalignment is given by:

∆KR = tan ∆KW x L, where L is the distance between the discs.
7. Check the maximum hub bores, speed and if the shaft to hub assembly will transmit the torque. If the speed exceeds 3000 r.p.m., consult our

Application Engineering Department.

8. Check if balancing is needed.

D-5

Disc Couplings Selection Data

Example of selection

Select a spacer coupling to connect a standard electric motor rated at 350 HP running at 1150 r.p.m. to a centrifugal pump rated at 308 HP. The shafts are 3”
and 2-3/4” respectively.

1. Coupling type SX

2. Service factor

a) Centrifugal pump 1.0
b) Electricmotor 0.0
TOTAL 1.0

D Torque = 308 x 63025 x 1.0 = 16,880 in.-lbs.
1150

3. Required minimum torque rating

The coupling selected is SX size 185-6 with a nominal torque of 29,205 in.-lbs., peak torque of 58,410, ∆Ka = ± 0.145 in. and ∆Kw = 1.5 º.

4. Check peak torque (Coupling peak torque is 29,205 in. lbs. x 2 =58,410 in. lbs.)
5. Check expected misalignment .
6. Check maximum bores: SX 185-6 has a maximum bore of 3.13 inches, therefore this dimension is larger than the existing bores. The speed check shows

it to be less than allowable speed (1150 .rp.m < 6850 r.p.m).

How to specify a Lovejoy/Jaure coupling

The following data has to be given Lovejoy/Jaure in order to verify that a proper selection has been made.

• Application and type of duty.
• Type of prime mover, power and speed.
• Shaft types and sizes, keyway dimensions, hub length.
• Expected misalignments.
• Type of driven equipment.
• Coupling type, size and distance between shaft ends (DBSE).
• Space limitations.
• Special requirements (vertical mounting, spark free, API 610 or 671, etc).

D-6

Disc Couplings Selection Data

Performance Data by Coupling Size1

Cplg. NOM. NOM. PEAK PEAK AXIAL2 AXIAL2 Torsional3 Torsional3 Angular
Size HP/100 RPM kW/100 RPM TORQ. TORQ. TORQ. TORQ. Misalig. Misalig. Stiffness Stiffness Misalign.
in-lbs in-lbs ±∆Ka ±∆Ka
90-6 3.4 2.6 x 103 Nm x 103 Nm x 106 x 106 Max D
110-6 8.1 6.0 x 103 x 103 inch mm in.-lbs./rad Nm./rad deg.
132-6 15.4 11.5 2.1 0.2 4.2 0.5 0.059 1.5 1.5°
158-6 28.1 21.0 5.1 0.6 10.2 1.2 0.083 2.1 2.4 .3
185-6 46.3 34.5 9.7 1.1 19.5 2.2 0.102 2.6 3.4 0.4 1°
202-6 64.6 48.2 17.7 2.0 35.4 4.0 0.122 3.1 4.4 0.5
228-6 98.3 73.3 29.2 3.3 58.4 6.6 0.146 3.7 5.8 0.7 .5°
255-6 143.2 106.8 40.7 4.6 81.4 9.2 0.150 3.8 11.5 1.3
278-6 199.4 148.8 62.0 7.0 123.9 14.0 0.165 4.2 13.3 1.5 .4°
302-6 280.9 209.6 90.3 10.2 180.6 20.4 0.185 4.7 23 2.6
325-6 351.1 261.9 125.7 14.2 251.4 28.4 0.205 5.2 41 4.7
345-6 435.4 324.8 177.0 20.0 354.0 40.0 0.224 5.7 63 7.1
380-6 594 443.1 221.3 25.0 442.6 50.0 0.256 6.5 84 9.5
410-6 802 598 274.4 31.0 549 62.0 0.272 6.9 115 13
440-6 1,032 770 374.4 42.3 749 84.6 0.299 7.6 150 17
475-6 1,292 964 505 57.1 1,011 114.2 0.323 8.2 195 22
505-6 1,643 1,226 651 73.5 1,301 147.0 0.346 8.8 248 28
278-8 280.9 209.6 814 92.0 1,629 184.0 0.374 9.5 310 35
302-8 421.3 314.3 1,036 117.0 2,071 234.0 0.398 10.1 372 42
325-8 520 387.6 177.0 20.0 354.0 40.0 0.146 3.70 443 50
345-8 646 481.9 265.5 30.0 531 60.0 0.157 4.00 84 9.5
380-8 885 660 327.5 37.0 655 74.0 0.169 4.30 132 14.9
410-8 1,208 901 407.1 46.0 814 92.0 0.181 4.60 181 20.4
440-8 1,545 1,152 558 63.0 1,115 126.0 0.197 5.00 221 25
475-8 1,938 1,446 761 86.0 1,522 172.0 0.213 5.40 301 34
505-8 2,458 1,833 974 110.0 1,947 220.0 0.228 5.80 354 40
540-8 3,090 2,305 1,221 138.0 2,443 276.0 0.248 6.30 434 49
570-8 3,637 2,713 1,549 175.0 3,098 350.0 0.264 6.70 531 60
605-8 4,424 3,300 1,947 220.0 3,894 440.0 0.283 7.20 646 73
635-8 5,379 4,013 2,292 259.0 4,585 518 0.299 7.60 788 89
675-8 6,376 4,756 2,788 315.0 5,576 630 0.307 7.80 912 103
700-8 7,415 5,532 3,390 383.0 6,780 766 0.323 8.20 1089 123
730-8 8,539 6,370 4,018 454.0 8,037 908 0.331 8.40 1248 141
760-8 9,831 7,334 4,673 528 9,347 1056 0.350 8.90 1496 169
505-10 3,076 2,294 5,381 608 10,763 1216 0.362 9.20 1637 185
540-10 3,848 2,871 6,196 700 12,391 1400 0.378 9.60 1859 210
570-10 4,536 3,384 1,938 219.0 3,877 438.0 0.197 5.0 2053 232
605-10 5,533 4,128 2,425 274.0 4,850 548 0.213 5.4
635-10 6,741 5,029 2,859 323.0 5,718 646 0.224 5.7 Refer Refer
675-10 8,005 5,972 3,487 394.0 6,975 788 0.228 5.8 Factory Factory
700-10 9,269 6,915 4,248 480.0 8,497 960 0.244 6.2
730-10 10,673 7,962 5,045 570 10,090 1140 0.252 6.4
760-10 12,218 9,115 5,842 660 11,683 1320 0.264 6.7
6,727 760 13,454 1520 0.276 7.0
7,700 870 15,401 1740 0.295 7.5

1) For the availability of a size within a coupling type refer to the specific type on the following pages.

2) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible
misalignment.

3) Torsional stiffness is given for one disc pack. This should be combined with hubs spacers, etc. as calculated from AGMA 9004-A99.

D-7

Disc Couplings Overview

D Lovejoy/Jaure Disc Coupling Overview

Industrial Coupling Type SX

This is the standard coupling that includes two rigid hubs, a minimum length spacer and
two disc packs. The disc packs are bolted to the hubs and spacers at the time of coupling
installation. The disc packs are unitized. Variations in the spacer length are available. Stock
spacers meet industry standard lengths for various equipment. The coupling has two flex
planes (one at each disc pack) so it can accommodate parallel misalignment by the
angular misalignment in each disc pack. It is suitable for axial displacement within
specified limits. The SX coupling is available with 6, 8, & 10 bolt configuration. Bores up to
13 inches (330 mm) can be supplied on the largest sizes.

The SX coupling can be fitted with overload bushings, which protect the disc pack in case
of a torque overload. They also serve as an anti-flail device.

Industrial Coupling Type SU

This variation is the single flex unit with two hubs and one disc pack. It is suitable for
angular misalignment only. It is often combined with hollow shafts to make a long light
weight floating shaft coupling.

Industrial Coupling Type SXC, SXCS

This is the close coupled variation of the coupling. It is similar to the SX in that the disc
pack is attached when the coupling is installed. In the close coupled unit the hubs are
inside the spacer, which also makes it a reduced moment coupling. The coupling can be
assembled with one or both hubs inserted into the spacer. Note: putting the hub inside the
spacer requires a reduced hub diameter which reduces max. bore capability. This type of
Lovejoy/Jaure disc coupling with a horizontally split spacer is designated as the SXCS.

Drop Out Coupling Type DI, DILR

The drop out coupling has a factory assembled center section that includes the spacer,
two disc packs and two guard rings. The disc packs are bolted to the spacer and guard
ring at the factory and tightened to the proper torque. The entire package is mounted
between the shaft hubs at the installation. Unlike the type SX the disc packs do not have
to be attached when the coupling is installed. Disc packs are unitized. The coupling has
two flex planes (one at each disc pack) so it can accommodate parallel misalignment by
the angular misalignment in each disc pack. It is suitable for axial displacement within
specified limits. The DI coupling is available with 6 & 8 bolt configuration. Standard hubs
and jumbo hubs are available, allowing up to 15.94 inches (400 mm) max. bore on the
largest hub.

Coupling Type SXGS and DIR

These two coupling types are floating shaft couplings that fit in the place of the gear type
floating shaft units. The couplings are designed to match up with the installed rigid gear
coupling hubs that are mounted on the equipment shafts. Although matched by AGMA
gear coupling size, the torque, speed and overall diameter should be checked when
applying these replacement couplings. The SXGS is a reduced moment configuration and
the DIR is a drop out configuration.

Other types of Lovejoy/Jaure disc couplings are shown on pages 18 and 19 of this catalog.
Refer to the Lovejoy/Jaure applications department for special requirements that are not
shown in this catalog.

D-8

Disc Couplings Dimensional Data

SU-6, SUO-6 Industrial Single Unit Disc Coupling, 6-bolt

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (mm) AXIAL6
Type TORQ. TORQ. SPEED SPEED Misalig.
SU UNBAL. BAL. MAX BSE ±∆Ka
Size Nm Nm r.p.m. r.p.m. BORE OAL mm
SU 90-6 x103 x103 9,100 22,700 FD D LS Standard PW 88 1.5
SU 110-6 0.2 0.5 7,200 18,000 41 7.5 108 2.1
SU 132-6 0.6 1.2 5,840 14,600 46 90 58 40 7.5 8 128 2.6
SU 158-6 1.1 2.2 4,920 12,300 60 8 151 3.1
SU 185-6 2.0 4.0 4,200 10,500 70 110 65 50 8.4 11 174 3.7
SU 202-6 3.3 6.6 3,840 9,600 80 14 195 3.8
SU 228-6 4.6 9.2 3,400 8,500 90 132 84 60 8.4 16 218 4.2
SU 255-6 7.0 14.0 3,080 7,700 100 18 251 4.7
SU 278-6 10.2 20.4 2,800 7,000 110 158 98 70 11.2 21 271 5.2
SU 302-6 14.2 28.4 2,560 6,400 124 21 295 5.7
SU 325-6 20.0 40.0 2,400 6,000 135 185 112 80 14 24 316 6.5
SU 345-6 25.0 50.0 2,200 5,500 145 26 338 6.9
SU 380-6 31.0 62.0 2,040 5,100 155 202 125 90 15.5 28 372 7.6
SU 410-6 42.3 84.6 1,880 4,700 170 32 403 8.2
SU 440-6 57.1 114.2 1,740 4,350 180 228 140 100 17.5 33 427 8.8
SU 475-6 73.5 147.0 1,680 4,200 195 36 458 9.5
SU 505-6 92.0 184.0 1,520 3,800 210 255 155 115 20.5 38 502 10.1
117.0 234.0 220 42
278 174 125 21.2

302 190 135 24.4

325 206 145 26

345 217 155 28.2

380 238 170 32

410 255 185 33.2

440 273 195 36.4

475 295 210 38.2

505 310 230 42

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (in) AXIAL6 D
Type TORQ. TORQ. SPEED SPEED Misalig.
SU in-lbs in-lbs UNBAL. BAL. MAX BSE ±∆Ka
Size x103 x103 r.p.m. r.p.m. BORE
SU 90-6 9,100 22,700 1.50 FD D LS Standard PW OAL inch
SU 110-6 2.1 4.2 7,200 18,000 1.81 3.54 3.44 0.059
SU 132-6 5.1 10.2 5,840 14,600 2.38 4.33 2.28 1.57 0.295 0.295 4.27 0.083
SU 158-6 9.7 19.5 4,920 12,300 2.75 5.20 5.05 0.102
SU 185-6 17.7 35.4 4,200 10,500 3.13 6.22 2.56 1.97 0.331 0.331 5.96 0.122
SU 202-6 29.2 58.4 3,840 9,600 3.50 7.28 6.85 0.146
SU 228-6 40.7 81.4 3,400 8,500 3.94 7.95 3.31 2.36 0.331 0.331 7.69 0.150
SU 255-6 62.0 123.9 3,080 7,700 4.31 8.98 8.57 0.165
SU 278-6 90.3 180.6 2,800 7,000 4.88 10.04 3.86 2.76 0.441 0.441 9.87 0.185
SU 302-6 125.7 251.4 2,560 6,400 5.31 10.95 10.67 0.205
SU 325-6 177.0 354.0 2,400 6,000 5.75 11.89 4.41 3.15 0.551 0.551 11.60 0.224
SU 345-6 221.3 442.6 2,200 5,500 6.06 12.80 12.44 0.256
SU 380-6 274.4 549 2,040 5,100 6.69 13.58 4.92 3.54 0.610 0.610 13.31 0.272
SU 410-6 374.4 749 1,880 4,700 7.13 14.96 14.66 0.299
SU 440-6 505 1,011 1,740 4,350 7.69 16.14 5.51 3.94 0.689 0.689 15.87 0.323
SU 475-6 651 1,301 1,680 4,200 8.25 17.32 16.79 0.346
SU 505-6 814 1,629 1,520 3,800 8.75 18.70 6.10 4.53 0.807 0.807 18.04 0.374
1,036 2,071 19.88 19.77 0.398
6.85 4.92 0.835 0.835

7.48 5.32 0.961 0.961

8.07 5.71 1.024 1.024

8.55 6.10 1.110 1.110

9.37 6.70 1.260 1.260

10.04 7.28 1.307 1.307

10.75 7.68 1.433 1.433

11.62 8.27 1.504 1.504

12.20 9.06 1.654 1.654

Larger sizes are available on demand.

1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.

2) For higher speeds consult Lovejoy.

3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.

4) Dimension BSE is the distance between shaft ends and is a variable parameter.

5) Weight of complete coupling with BSE min. dimension and max. bore.

6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment. D-9

Disc Couplings Dimensional Data

SX-6, SXO-6 Industrial 3-piece Disc Coupling, 6-bolt

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (mm) AXIAL6

Type TORQ. TORQ. SPEED SPEED Misalig.

SX Nm Nm UNBAL. BAL. MAX BSE Weight 5 ±∆Ka

Size x103 x103 r.p.m. r.p.m. BORE FD D LS Standard PW S OAL kg mm

SX 90-6 0.2 0.5 9,100 22,700 41 90 58 40 54 4 46 134 2.1 1.5

SX 110-6 0.6 1.2 7,200 18,000 46 110 65 50 89 8 72 189 2.9 2.1

SX 132-6 1.1 2.2 5,840 14,600 60 132 84 60 108 8 91 228 5.5 2.6

SX 158-6 2.0 4.0 4,920 12,300 70 158 98 70 124 11 102 264 8.6 3.1

SX 185-6 3.3 6.6 4,200 10,500 80 185 112 80 140 14 112 300 15 3.7

SX 202-6 4.6 9.2 3,840 9,600 90 202 125 90 159 16 128 339 21 3.8

SX 228-6 7.0 14.0 3,400 8,500 100 228 140 100 175 18 140 375 30 4.2

SX 255-6 10.2 20.4 3,080 7,700 110 255 155 115 197 21 156 427 40 4.7

SX 278-6 14.2 28.4 2,800 7,000 124 278 174 125 219 21 177 469 57 5.2

SX 302-6 20.0 40.0 2,560 6,400 135 302 190 135 235 24 186 505 74 5.7

SX 325-6 25.0 50.0 2,400 6,000 145 325 206 145 254 26 202 544 89 6.5

SX 345-6 31.0 62.0 2,200 5,500 155 345 217 155 270 28 214 580 109 6.9

SX 380-6 42.3 84.6 2,040 5,100 170 380 238 170 297 32 233 637 146 7.6

SX 410-6 57.1 114.2 1,880 4,700 180 410 255 185 321 33 254 690 190 8.2

SX 440-6 73.5 147.0 1,740 4,350 195 440 273 195 335 36 262 725 224 8.8

SX 475-6 92.0 184.0 1,680 4,200 210 475 295 210 359 38 283 779 228 9.5

SX 505-6 117.0 234.0 1,520 3,800 220 505 310 230 394 42 310 854 366 10.1

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (in) AXIAL6
Type TORQ. TORQ. SPEED SPEED Misalig.
D SX in-lbs in-lbs UNBAL. BAL. MAX BSE Weight 5 ±∆Ka
Size x103 x103 r.p.m. r.p.m. BORE lbs
SX 90-6 9,100 22,700 FD D LS Standard PW S OAL 5 inch
SX 110-6 2.1 4.2 7,200 18,000 1.50 3.54 6 0.059
SX 132-6 5.1 10.2 5,840 14,600 1.81 4.33 2.28 1.57 2.13 0.165 1.80 5.27 12 0.083
SX 158-6 9.7 19.5 4,920 12,300 2.38 5.20 19 0.102
SX 185-6 17.7 35.4 4,200 10,500 2.75 6.22 2.56 1.97 3.50 0.331 2.84 7.44 33 0.122
SX 202-6 29.2 58.4 3,840 3.13 7.28 46 0.146
SX 228-6 40.7 81.4 3,400 9,600 3.50 7.95 3.31 2.36 4.25 0.331 3.59 8.97 66 0.150
SX 255-6 62.0 123.9 3,080 8,500 3.94 8.98 88 0.165
SX 278-6 90.3 180.6 2,800 7,700 4.31 10.04 3.86 2.76 4.88 0.441 4.00 10.40 125 0.185
SX 302-6 125.7 251.4 2,560 7,000 4.88 10.95 163 0.205
SX 325-6 177.0 354.0 2,400 6,400 5.31 11.89 4.41 3.15 5.50 0.551 4.40 11.80 196 0.224
SX 345-6 221.3 442.6 2,200 6,000 5.75 12.80 240 0.256
SX 380-6 274.4 549 2,040 5,500 6.06 13.58 4.92 3.54 6.25 0.610 5.03 13.33 321 0.272
SX 410-6 374.4 749 1,880 5,100 6.69 14.96 418 0.299
SX 440-6 505 1,011 1,740 4,700 7.13 16.14 5.51 3.94 6.88 0.689 5.50 14.76 493 0.323
SX 475-6 651 1,301 1,680 4,350 7.69 17.32 634 0.346
SX 505-6 814 1,629 1,520 4,200 8.25 18.70 6.10 4.53 7.75 0.807 6.14 16.81 805 0.374
1,036 2,071 3,800 8.75 19.88 0.398
6.85 4.92 8.63 0.835 6.96 18.47

7.48 5.32 9.25 0.961 7.33 19.89

8.07 5.71 10.00 1.024 7.95 21.42

8.55 6.10 10.63 1.110 8.41 22.83

9.37 6.70 11.68 1.260 9.16 25.08

10.04 7.28 12.62 1.307 10.01 27.18

10.75 7.68 13.19 1.433 10.32 28.55

11.62 8.27 14.13 1.504 11.12 30.67

12.20 9.06 15.50 1.654 12.19 33.62

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-10

Disc Couplings General Overview

SX-8, SXO-8 Industrial 3-piece Disc Coupling, 8-bolt

Cplg. NOM. PEAK MAX1 MAX2 MAX FD D DIMENSIONS (mm) S OAL Weight 5 AXIAL6
Type TORQ. TORQ. SPEED SPEED BORE 278 174 177 469 kg Misalig.
SX UNBAL. BAL. 302 190 BSE 186 505 59 ±∆Ka
Size Nm Nm r.p.m. r.p.m. 124 325 205 LS Standard PW 202 544 77
SX 278-8 x103 x103 2,800 7,000 135 345 217 125 219 21 214 580 92 mm
SX 302-8 2,560 6,400 145 380 238 135 235 24 233 637 112 3.70
SX 325-8 20 40 2,400 6,000 155 410 255 145 254 26 254 690 150 4.00
SX 345-8 30 60 2,200 5,500 170 440 273 155 270 28 262 725 195 4.30
SX 380-8 37 74 2,040 5,100 180 475 295 170 297 32 283 779 230 4.60
SX 410-8 46 92 1,880 4,700 195 505 310 185 321 33 310 854 295 5.00
SX 440-8 63 126 1,740 4,350 210 540 330 195 335 36 324 896 374 5.40
SX 475-8 86 172 1,680 4,200 220 570 350 210 359 38 348 951 454 5.80
SX 505-8 110 220 1,520 3,800 235 605 370 230 394 42 368 1,005 535 6.30
SX 540-8 138 276 1,440 3,600 250 635 385 240 416 46 399 1,081 617 6.70
SX 570-8 175 350 1,360 3,400 265 675 410 250 451 52 428 1,159 728 7.20
SX 605-8 220 440 1,280 3,200 275 700 420 265 475 53 458 1,225 875 7.60
SX 635-8 259 518 1,240 3,100 290 730 440 280 521 61 471 1,273 7.80
SX 675-8 315 630 1,160 2,900 300 760 460 300 559 65 497 1,343 1,021 8.20
SX 700-8 383 766 1,120 2,800 315 315 595 69 1,130 8.40
SX 730-8 454 908 1,080 2,700 330 330 613 71 1,310 8.90
SX 760-8 528 1,056 1,040 2,600 350 643 73 9.20
608 1,216 9.60
700 1,400

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (in) AXIAL6
Type TORQ. TORQ. SPEED SPEED Misalig.
SX in-lbs in-lbs UNBAL. BAL. MAX BSE Weight 5 ±∆Ka D
Size x103 x103 r.p.m. r.p.m. BORE Standard lbs
SX 278-8 117.0 2,800 7,000 FD D LS PW S OAL 130 inch
SX 302-8 265.5 354 2,560 6,400 4.88 10.95 6.85 4.92 8.63 0.835 6.96 18.47 169 0.146
SX 325-8 327.5 531 2,400 6,000 5.38 11.89 7.48 5.32 9.25 0.961 7.33 19.89 202 0.157
SX 345-8 407.1 655 2,200 5,500 5.75 12.80 8.07 5.71 10.00 1.024 7.95 21.42 246 0.169
SX 380-8 814 2,040 5,100 6.13 13.58 8.55 6.10 10.63 1.110 8.41 22.83 330 0.181
SX 410-8 558 1,115 1,880 4,700 6.63 14.96 9.37 6.70 11.68 1.260 9.16 25.08 429 0.197
SX 440-8 761 1,522 1,740 4,350 7.13 16.14 10.04 7.28 12.62 1.307 10.01 27.18 506 0.213
SX 475-8 974 1,947 1,680 4,200 7.69 17.32 10.75 7.68 13.19 1.433 10.32 28.55 649 0.228
SX 505-8 1,221 2,443 1,520 3,800 8.25 18.70 11.62 8.27 14.13 1.504 11.12 30.67 823 0.248
SX 540-8 1,549 3,098 1,440 3,600 8.88 19.88 12.20 9.06 15.50 1.654 12.19 33.62 999 0.264
SX 570-8 1,947 3,894 1,360 3,400 9.25 21.26 12.99 9.45 16.38 1.811 12.76 35.28 1,177 0.283
SX 605-8 2,292 4,585 1,280 3,200 9.88 22.44 13.78 9.84 17.75 2.031 13.69 37.43 1,357 0.299
SX 635-8 2,788 5,576 1,240 3,100 10.44 23.82 14.57 10.43 18.69 2.094 14.50 39.55 1,602 0.307
SX 675-8 3,390 6,780 1,160 2,900 10.88 25.00 15.16 11.03 20.50 2.394 15.71 42.56 1,925 0.323
SX 700-8 4,018 8,037 1,120 2,800 11.50 26.58 16.14 11.81 22.00 2.567 16.87 45.62 2,246 0.331
SX 730-8 4,673 9,347 1,080 2,700 11.81 27.56 16.54 12.40 23.44 2.709 18.02 48.24 2,486 0.350
SX 760-8 5,381 10,763 1,040 2,600 12.44 28.74 17.32 12.99 24.13 2.803 18.52 50.11 2,882 0.362
6,196 12,391 13.00 29.92 18.11 13.78 25.31 2.866 19.58 52.87 0.378

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-11

Disc Couplings Dimensional Data

SX-10, SXO-10 Industrial 3-piece Disc Coupling, 10-bolt

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (mm) AXIAL6
Type TORQ. TORQ. SPEED SPEED
SX UNBAL. BAL. BSE Misalig.
Size Nm Nm r.p.m. r.p.m. LS Standard PW
SX 505-10 x103 x103 1,520 3,800 MAX 230 394 42 Weight 5 ±∆Ka
SX 540-10 219 438 1,440 3,600 BORE 240 416 46
SX 570-10 274 548 1,360 3,400 FD D 250 451 52 S OAL kg mm
SX 605-10 323 646 1,280 3,200 220 505 310 265 475 53
SX 635-10 394 788 1,240 3,100 235 540 330 280 521 61 310 854 378 5.0
SX 675-10 480 960 1,160 2,900 250 570 350 300 559 65
SX 700-10 570 1,140 1,120 2,800 265 605 370 315 595 69 324 896 459 5.4
SX 730-10 660 1,320 1,080 2,700 275 635 385 330 610 71
SX 760-10 760 1,520 1,040 2,600 290 675 410 350 643 73 348 951 540 5.7
870 1,740 300 700 420
315 730 440 368 1,005 622 5.8
330 760 460
399 1,081 734 6.2

428 1,159 882 6.4

458 1,225 1,029 6.7

467 1,269 1,139 7.0

497 1,343 1,320 7.5

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (in) AXIAL6
Type TORQ. TORQ. SPEED SPEED Misalig.
D SX in-lbs in-lbs UNBAL. BAL. MAX FD D LS BSE PW S OAL Weight 5 ±∆Ka
Size x103 x103 r.p.m. r.p.m. BORE 19.88 12.20 9.06 Standard 1.654 12.19 33.62 lbs
SX 505-10 1,938 3,877 1,520 3,800 8.75 21.26 12.99 9.45 1.811 12.76 35.28 833 inch
SX 540-10 2,425 4,850 1,440 3,600 9.25 22.44 13.78 9.84 15.50 2.031 13.69 37.43 1,012 0.197
SX 570-10 2,859 5,718 1,360 3,400 9.88 23.82 14.57 10.43 16.38 2.094 14.50 39.55 1,190 0.213
SX 605-10 3,487 6,975 1,280 3,200 10.44 25.00 15.16 11.03 17.75 2.394 15.71 42.56 1,371 0.224
SX 635-10 4,287 8,497 1,240 3,100 10.88 26.58 16.14 11.81 18.69 2.567 16.87 45.62 1,618 0.228
SX 675-10 5,045 10,090 1,160 2,900 11.50 27.56 16.54 12.40 20.50 2.709 18.02 48.24 1,944 0.244
SX 700-10 5,842 11,683 1,120 2,800 11.81 28.74 17.32 12.99 22.00 2.803 18.39 49.98 2,269 0.252
SX 730-10 6,727 13,454 1,080 2,700 12.44 29.92 18.11 13.78 23.44 2.866 19.58 52.87 2,511 0.264
SX 760-10 7,700 15,401 1,040 2,600 13.00 24.00 2,910 0.276
25.31 0.295

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-12

Disc Couplings Dimensional Data

SXC-6 Close Coupled Industrial Style Disc Coupling, 6-bolt PW

OAL
S

FW

FC BSE1 FD
LS D

HUB

FW
SPACER

Cplg. NOM. PEAK MAX1 MAX2 MAX Weight5 AXIAL6 Charts are continued on next page.
Type TORQ. TORQ. SPEED SPEED BORE kg Misalig.
SXC UNBAL. BAL. mm 1.8 ±∆Ka
Size Nm Nm r.p.m. r.p.m. 3.8
SXC 110-6 x103 x103 7,200 18,000 29 5.8 mm
SXC 132-6 1.2 5,840 14,600 50 10 2.1
SXC 158-6 0.6 2.2 4,920 12,300 60 15 2.6
SXC 185-6 1.1 4.0 4,200 10,500 68 21 3.1
SXC 202-6 2.0 6.6 3,840 75 27 3.7
SXC 228-6 3.3 9.2 3,400 9,600 85 36 3.8
SXC 255-6 4.6 14.0 3,080 8,500 95 46 4.2
SXC 278-6 7.0 20.4 2,800 7,700 105 55 4.7
SXC 302-6 10.2 28.4 2,560 7,000 115 70 5.2
SXC 325-6 14.2 40.0 2,400 6,400 125 92 5.7
SXC 345-6 20.0 50.0 2,200 6,000 130 116 6.5
SXC 380-6 25.0 62.0 2,040 5,500 145 136 6.9
SXC 410-6 31.0 84.6 1,880 5,100 160 172 7.6
SXC 440-6 42.3 114.2 1,740 4,700 165 225 8.2
SXC 475-6 57.1 147.0 1,680 4,350 180 8.8
SXC 505-6 73.5 184.0 1,520 4,200 195 9.5
92.0 234.0 3,800 10.1
117.0

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 MAX Weight5 AXIAL6 D
Type TORQ. TORQ. SPEED SPEED BORE lbs Misalig.
SXC in-lbs in-lbs UNBAL. BAL. inch 4 ±∆Ka
Size x103 x103 r.p.m. r.p.m. 1.14 8
SXC 110-6 10.2 7,200 18,000 2.06 13 inch
SXC 132-6 5.1 19.5 5,840 14,600 2.38 22 0.083
SXC 158-6 9.7 35.4 4,920 12,300 2.68 33 0.102
SXC 185-6 17.7 58.4 4,200 10,500 3.06 46 0.122
SXC 202-6 29.2 81.4 3,840 9,600 3.44 60 0.146
SXC 228-6 40.7 123.9 3,400 8,500 3.88 79 0.150
SXC 255-6 62.0 180.6 3,080 7,700 4.25 101 0.165
SXC 278-6 90.3 251.4 2,800 7,000 4.63 121 0.185
SXC 302-6 125.7 354.0 2,560 6,400 4.88 154 0.205
SXC 325-6 177.0 442.6 2,400 6,000 5.25 203 0.224
SXC 345-6 221.3 548.8 2,200 5,500 5.75 256 0.256
SXC 380-6 274.4 748.8 2,040 5,100 6.25 300 0.272
SXC 410-6 374.4 1,011 1,880 4,700 6.50 379 0.299
SXC 440-6 505.4 1,301 1,740 4,350 7.06 503 0.323
SXC 475-6 650.5 1,629 1,680 4,200 7.75 0.346
SXC 505-6 814.3 2,071 1,520 3,800 0.374
1,036 0.398

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-13

Disc Couplings Dimensional Data

SXC-6 Close Coupled Industrial Style Disc Coupling, 6-bolt

OAL

S PW
FW

FC BSE1 FD
LS D

HUB

FW

SPACER

Cplg. DIMENSIONS (mm)

Type

SXC BSE BSE OAL1
FC S OAL 1 Rev. Hub
Size FD D LS Standard 1 Rev. Hub PW HH FW 45 72 116 152
8 45 91 135 181
SXC 110-6 110 54 50 4 47 8 6 8 55 102 158 211
10 65 112 180 240
SXC 132-6 132 71 60 4 56 8 6 12 75 128 205 272
14 85 140 227 301
SXC 158-6 158 84 70 4 64 11 7 16 100 156 263 345
20 105 177 285 377
SXC 185-6 185 95 80 4 72 14 8 20 115 186 307 406
22 115 202 326 435
SXC 202-6 202 110 90 7 83 16 9 22 125 214 348 464
24 140 233 385 511
SXC 228-6 228 123 100 7 91 18 10 27 150 254 419 554
30 165 262 446 587
SXC 255-6 255 138 115 7 102 21 13 33 180 283 477 628
36 195 310 522 688
SXC 278-6 278 152 125 9 114 21 13 39

SXC 302-6 302 165 135 9 122 24 14

SXC 325-6 325 174 145 8 131 26 14

SXC 345-6 345 186 155 8 139 28 15

SXC 380-6 380 204 170 10 153 32 17

SXC 410-6 410 223 185 11 166 33 19

SXC 440-6 440 233 195 14 176 36 21

SXC 475-6 475 252 210 11 185 38 23

SXC 505-6 505 276 230 11 203 42 25

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

D Cplg. DIMENSIONS (in)
Type
SXC FD D BSE BSE PW HH FW OAL1
Size 4.33 2.13 LS Standard 1 Rev. Hub 0.33 0.22 0.31 FC S OAL 1 Rev. Hub
SXC 110-6 5.20 2.79 1.97 0.16 0.33 0.22 0.31 1.77 2.84 4.56 6.00
SXC 132-6 6.22 3.31 2.36 0.16 1.84 0.44 0.28 0.39 1.77 3.59 5.31 7.14
SXC 158-6 7.28 3.74 2.76 0.16 2.21 0.55 0.31 0.47 2.17 4.00 6.22 8.31
SXC 185-6 7.95 4.33 3.15 0.16 2.52 0.61 0.35 0.55 2.56 4.40 7.07 9.44
SXC 202-6 8.98 4.84 3.54 0.27 2.82 0.69 0.39 0.63 2.95 5.03 8.06 10.70
SXC 228-6 10.04 5.43 3.94 0.26 3.26 0.81 0.51 0.79 3.35 5.50 8.93 11.84
SXC 255-6 10.95 5.99 4.53 0.26 3.57 0.84 0.51 0.79 3.94 6.14 10.35 13.58
SXC 278-6 11.89 6.50 4.92 0.36 4.01 0.96 0.55 0.87 4.13 6.96 11.23 14.85
SXC 302-6 12.80 6.85 5.32 0.34 4.50 1.02 0.55 0.87 4.53 7.33 12.08 15.99
SXC 325-6 13.58 7.32 5.71 0.31 4.80 1.11 0.59 0.94 4.53 7.95 12.83 17.13
SXC 345-6 14.96 8.03 6.10 0.32 5.16 1.26 0.67 1.06 4.92 8.41 13.70 18.27
SXC 380-6 16.14 8.78 6.70 0.41 5.47 1.31 0.75 1.18 5.51 9.16 15.14 20.11
SXC 410-6 17.32 9.17 7.28 0.42 6.04 1.43 0.83 1.30 5.91 10.01 16.48 21.83
SXC 440-6 18.70 9.92 7.68 0.55 6.52 1.50 0.91 1.42 6.50 10.32 17.56 23.12
SXC 475-6 19.88 10.87 8.27 0.42 6.93 1.65 0.98 1.54 7.09 11.12 18.78 24.72
SXC 505-6 9.06 0.45 7.28 7.68 12.19 20.54 27.08
7.98

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-14

Disc Couplings Dimensional Data

SXC-8 Close Coupled Industrial Style Disc Coupling, 8-bolt PW

OAL
S

FW

FC BSE1 FD
LS D

HUB

FW
SPACER

Cplg. NOM. PEAK MAX1 MAX2 MAX Weight5 AXIAL6 Charts are continued on next page.
Type TORQ. TORQ. SPEED SPEED BORE kg Misalig.
SXC kNm kNm UNBAL. BAL. mm 36 ±∆Ka
Size x103 x103 r.p.m. r.p.m. 100 45
SXC 278-8 40.0 2,800 7,000 110 51 mm
SXC 302-8 20 60.0 2,560 6,400 115 64 3.7
SXC 325-8 30 74.0 2,400 6,000 125 84 4.0
SXC 345-8 37 92.0 2,200 5,500 140 109 4.3
SXC 380-8 46 126.0 2,040 5,100 150 130 4.6
SXC 410-8 63 172.0 1,880 4,700 160 164 5.0
SXC 440-8 86 220.0 1,740 4,350 170 212 5.4
SXC 475-8 110 276.0 1,680 4,200 190 265 5.8
SXC 505-8 138 350.0 1,520 3,800 195 311 6.3
SXC 540-8 175 440.0 1,440 3,600 205 353 6.7
SXC 570-8 220 518.0 1,360 3,400 215 406 7.2
SXC 605-8 259 630.0 1,280 3,200 230 458 7.6
SXC 635-8 315 766.0 1,240 3,100 250 556 7.8
SXC 675-8 383 908.0 1,160 2,900 260 613 8.2
SXC 700-8 454 1,056 1,120 2,800 265 698 8.4
SXC 730-8 528 1,216 1,080 2,700 280 8.9
SXC 760-8 608 1,400 1,040 2,600 9.2
700 9.6

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 MAX Weight5 AXIAL6 D
Type TORQ. TORQ. SPEED SPEED BORE lbs Misalig.
SXC in-lbs in-lbs UNBAL. BAL. inch 79 ±∆Ka
Size x103 x103 r.p.m. r.p.m. 99
SXC 278-8 117.0 2,800 7,000 4.06 112 inch
SXC 302-8 265.5 354 2,560 6,400 4.44 141 0.146
SXC 325-8 327.5 531 2,400 6,000 4.69 185 0.157
SXC 345-8 407.1 655 2,200 5,500 5.00 240 0.169
SXC 380-8 814 2,040 5,100 5.50 287 0.181
SXC 410-8 558 1,115 1,880 4,700 6.06 362 0.197
SXC 440-8 761 1,522 1,740 4,350 6.31 467 0.213
SXC 475-8 974 1,947 1,680 4,200 6.88 584 0.228
SXC 505-8 1,221 2,443 1,520 3,800 7.50 686 0.248
SXC 540-8 1,549 3,098 1,440 3,600 7.81 778 0.264
SXC 570-8 1,947 3,894 1,360 3,400 8.06 895 0.283
SXC 605-8 2,292 4,585 1,280 3,200 8.56 1010 0.299
SXC 635-8 2,788 5,576 1,240 3,100 9.06 1226 0.307
SXC 675-8 3,390 6,780 1,160 2,900 9.88 1351 0.323
SXC 700-8 4,018 8,037 1,120 2,800 10.25 1539 0.331
SXC 730-8 4,673 9,347 1,080 2,700 10.50 0.350
SXC 760-8 5,381 10,763 1,040 2,600 11.13 0.362
6,196 12,391 0.378

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-15

Disc Couplings Dimensional Data

SXC-8 Close Coupled Industrial Style Disc Coupling, 8-bolt

OAL

S PW
FW

FC BSE1 FD
LS D

HUB

FW

SPACER

Cplg. DIMENSIONS (mm)

Type

SXC BSE BSE OAL1

Size FD D LS Standard 1 Rev. Hub PW HH FW FC S OAL 1 Rev. Hub
20
SXC 278-8 278 142 125 9 114 21 13 22 105 177 285 377
22
SXC 302-8 302 153 135 9 122 24 14 24 115 186 307 406
27
SXC 325-8 325 166 145 8 131 26 14 30 115 202 326 435
33
SXC 345-8 345 178 155 8 139 28 15 36 125 214 348 464
39
SXC 380-8 380 196 170 10 153 32 17 42 140 233 385 511
45
SXC 410-8 410 215 185 11 166 33 19 48 150 254 419 554
52
SXC 440-8 440 225 195 11 173 36 21 56 165 262 443 584
60
SXC 475-8 475 244 210 11 185 38 23 60 180 283 477 628
64
SXC 505-8 505 254 230 11 203 42 25 195 310 522 688

SXC 540-8 540 278 240 20 218 46 26 210 324 552 724

SXC 570-8 570 288 250 41 246 52 28 230 348 597 774

SXC 605-8 605 306 265 41 258 53 30 240 368 631 818

SXC 635-8 635 322 280 64 293 61 33 265 399 691 886

SXC 675-8 675 350 300 71 315 65 35 280 428 741 950

SXC 700-8 700 365 315 85 340 69 38 300 458 791 1,008

SXC 730-8 730 375 330 73 343 71 38 305 471 809 1,041

SXC 760-8 760 395 350 71 357 73 40 320 851 851 1,097

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

D Cplg. BSE BSE DIMENSIONS (in) OAL1
Type Standard 1 Rev. Hub 1 Rev. Hub
SXC FD D LS PW HH FW FC S OAL
Size 10.95 5.59 4.92 0.36 4.50 0.83 0.51 0.79 4.13 6.96 11.23 14.85
SXC 278-8 11.89 6.02 5.32 0.34 4.80 0.96 0.55 0.87 4.53 7.33 12.08 15.99
SXC 302-8 12.80 6.53 5.71 0.31 5.16 1.02 0.55 0.87 4.53 7.95 12.83 17.13
SXC 325-8 13.58 7.00 6.10 0.32 5.47 1.11 0.59 0.94 4.92 8.41 13.70 18.27
SXC 345-8 14.96 7.71 6.70 0.41 6.04 1.26 0.67 1.06 5.51 9.16 15.14 20.11
SXC 380-8 16.14 8.46 7.28 0.42 6.52 1.31 0.75 1.18 5.91 10.01 16.48 21.83
SXC 410-8 17.32 8.86 7.68 0.43 6.81 1.43 0.83 1.30 6.50 10.32 17.44 23.00
SXC 440-8 18.70 9.61 8.27 0.42 7.28 1.50 0.91 1.42 7.09 11.12 18.78 24.72
SXC 475-8 19.88 10.00 9.06 0.45 7.98 1.65 0.98 1.54 7.68 12.19 20.54 27.08
SXC 505-8 21.26 10.94 9.45 0.79 8.58 1.81 1.02 1.65 8.27 12.76 21.73 28.51
SXC 540-8 22.44 11.34 9.84 1.61 9.68 2.03 1.10 1.77 9.06 13.69 23.50 30.46
SXC 570-8 23.82 12.05 10.43 1.61 10.15 2.09 1.18 1.89 9.45 14.50 24.83 32.19
SXC 605-8 25.00 12.68 11.03 2.53 11.52 2.39 1.30 2.05 10.43 15.71 27.19 34.88
SXC 635-8 26.58 13.78 11.81 2.79 12.39 2.57 1.38 2.20 11.02 16.87 29.17 37.39
SXC 675-8 27.56 14.37 12.40 3.36 13.40 2.71 1.50 2.36 11.81 18.02 31.16 39.70
SXC 700-8 28.74 14.76 12.99 2.87 13.50 2.80 1.50 2.36 12.01 18.52 31.85 40.98
SXC 730-8 29.92 15.55 13.78 2.79 14.05 2.87 1.57 2.52 12.60 19.58 33.50 43.18
SXC 760-8

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-16

Disc Couplings Dimensional Data

SXCS-6 Close Coupled Industrial Style Disc Coupling Split Spacer, 6-bolt

AXIAL SPLIT OAL
PW BSE

FD D OD

HUB MOUNT BOLTS
MOUNT RING
DISC PACK KIT
SPLIT SPACER

Cplg. NOM. PEAK MAX1 MAX2 MAX Weight5 AXIAL6 Charts are continued on next page.
Type TORQ. TORQ. SPEED SPEED BORE kg Misalig.
SXCS kNm kNm UNBAL. BAL. mm 1.8 ±∆Ka
Size x103 x103 r.p.m. r.p.m. 3.8
SXCS 110-6 7,200 18,000 29 5.8 mm
SXCS 132-6 0.6 1.2 5,840 14,600 50 10 2.1
SXCS 158-6 1.1 2.2 4,920 12,300 60 15 2.6
SXCS 185-6 2.0 4.0 4,200 10,500 68 21 3.1
SXCS 202-6 3.3 6.6 3,840 9,600 75 27 3.7
SXCS 228-6 4.6 9.2 3,400 8,500 85 36 3.8
SXCS 255-6 7.0 14.0 3,080 7,700 95 46 4.2
SXCS 278-6 10.2 20.4 2,800 7,000 105 4.7
SXCS 302-6 14.2 28.4 2,560 6,400 115 5.2
20.0 40.0 5.7

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 MAX Weight5 AXIAL6 D
Type TORQ. TORQ. SPEED SPEED BORE lbs Misalig.
SXCS in-lbs in-lbs UNBAL. BAL. inch 4 ±∆Ka
Size x103 x103 r.p.m. r.p.m. 1.14 8
SXCS 110-6 10.2 7,200 18,000 2.06 13 inch
SXCS 132-6 5.1 19.5 5,840 14,600 2.38 22 0.083
SXCS 158-6 9.7 35.4 4,920 12,300 2.68 33 0.102
SXCS 185-6 17.7 58.4 4,200 10,500 3.06 46 0.122
SXCS 202-6 29.2 81.4 3,840 9,600 3.44 60 0.146
SXCS 228-6 40.7 123.9 3,400 8,500 3.88 79 0.150
SXCS 255-6 62.0 180.6 3,080 7,700 4.25 101 0.165
SXCS 278-6 90.3 251.4 2,800 7,000 4.63 0.185
SXCS 302-6 125.7 354.0 2,560 6,400 0.205
177.0 0.224

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-17

Disc Couplings Dimensional Data

SXCS-6 Close Coupled Industrial Style Disc Coupling Split Spacer, 6-bolt

AXIAL SPLIT OAL
PW BSE

FD D OD

HUB MOUNT BOLTS
MOUNT RING
DISC PACK KIT
SPLIT SPACER

Cplg. FD D Dimensions (mm) OD OAL
Type 124.0 53.8 128.0 111.3
SXCS 145.0 70.9 BSE PW 149.1 129.0
Size 170.9 83.8 11.2 8.4 175.0 152.1
SXCS 110-6 195.1 95.0 9.1 8.4 198.9 174.8
SXCS 132-6 214.1 108.0 11.9 11.2 217.9 196.1
SXCS 158-6 243.1 122.9 14.7 14.0 246.9 218.4
SXCS 185-6 274.1 134.9 16.3 15.5 277.9 260.9
SXCS 202-6 294.1 151.9 18.3 17.5 297.9 272.0
SXCS 228-6 327.2 164.8 30.7 20.5 331.0 297.7
SXCS 258-6 22.1 21.2
SXCS 278-6 27.4 24.4
SXCS 302-6

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. Dimensions (in)
Type
D SXCS FD D BSE PW OD OAL
Size 4.88 2.12 0.44 0.331 5.04 4.38
SXCS 110-6 5.71 2.79 0.36 0.331 5.87 5.08
SXCS 132-6 6.73 3.30 0.47 0.442 6.89 5.99
SXCS 158-6 7.68 3.74 0.58 0.551 7.83 6.88
SXCS 185-6 8.43 4.25 0.64 0.610 8.58 7.72
SXCS 202-6 9.57 4.84 0.72 0.689 9.72 8.60
SXCS 228-6 10.79 5.31 1.21 0.806 10.94 10.27
SXCS 258-6 11.58 5.98 0.87 0.834 11.73 10.71
SXCS 278-6 12.88 6.49 1.08 0.961 13.03 11.72
SXCS 302-6

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-18

Disc Couplings Dimensional Data

Drop in (API) Style 5-piece Disc Coupling, 6-bolt

Cplg. NOM. PEAK MAX1 MAX2 AXIAL6

Type TORQ. TORQ. SPEED SPEED DIMENSIONS (mm) Misalig.

DI Nm Nm UNBAL. BAL. MAX BORE MAX BORE Weight5 ±∆Ka

Size x103 x103 r.p.m. r.p.m. Standard Jumbo SD FD D LP S HH BSE OAL kg mm

DI 090-6 0.2 0.5 9,100 22,700 43 59 90 94 60 33 43 13 79 155 4 1.5

DI 110-6 0.6 1.2 7,200 18,000 52 75 110 115 73 50 61 13 108 208 5.4 2.1

DI 132-6 1.1 2.2 5,840 14,600 67 90 132 139 95 60 64 13 111 231 10 2.6

DI 158-6 2.0 4.0 4,920 12,300 80 105 158 165 112 70 79 17 140 280 18 3.1

DI 185-6 3.3 6.6 4,200 10,500 95 125 185 193 134 80 88 19 160 320 28 3.7

DI 202-6 4.6 9.2 3,840 9,600 102 135 202 210 144 90 105 22 186 366 38 3.8

DI 228-6 7.0 14.0 3,400 8,500 115 150 228 236 160 100 114 24 205 405 55 4.2

DI 255-6 10.2 20.4 3,080 7,700 125 170 255 263 175 115 140 27 251 481 72 4.7

DI 278-6 14.2 28.4 2,800 7,000 140 185 278 286 195 125 143 30 256 505 101 5.2

DI 302-6 20.0 40.0 2,560 6,400 155 200 302 310 217 135 156 32 281 551 133 5.7

DI 325-6 25.0 50.0 2,400 6,000 170 215 325 333 240 145 158 32 286 576 160 6.5

DI 345-6 31.0 62.0 2,200 5,500 180 230 345 355 255 155 182 30 321 631 193 6.9

DI 380-6 42.3 84.6 2,040 5,100 210 250 380 390 295 170 190 32 346 686 262 7.6

DI 410-6 57.1 114.2 1,880 4,700 225 270 410 420 315 185 206 36 375 744 335 8.2

DI 440-6 73.5 147.0 1,740 4,350 235 290 440 450 330 195 231 41 416 806 397 8.8

DI 475-6 92.0 184.0 1,680 4,200 250 312 475 485 355 210 252 46 451 871 505 9.5

DI 505-6 117.0 234.0 1,520 3,800 275 332 505 515 385 230 275 46 490 951 631 10.1

Metric dimensions are rounded to the nearest “mm” except where otherwise shown

Cplg. NOM. PEAK MAX1 MAX2 AXIAL6
Type TORQ. TORQ. SPEED Misalig.
in-lbs in-lbs UNBAL. SPEED DIMENSIONS (in) ±∆Ka D
DI x103 x103 r.p.m.
Size 9,100 BAL. MAX BORE MAX BORE Weight5 inch
DI 090-6 2.1 4.2 7,200 0.059
DI 110-6 5.1 10.2 5,840 r.p.m. Standard Jumbo SD FD D LP S HH BSE OAL lbs 0.083
DI 132-6 9.7 19.5 4,920 0.102
DI 158-6 17.7 35.4 4,200 22,700 1.68 2.25 3.54 3.70 2.36 1.30 1.68 0.51 3.11 6.10 8 0.122
DI 185-6 29.2 58.4 3,840 0.146
DI 202-6 40.7 81.4 3,400 18,000 2.06 2.94 4.33 4.53 2.87 1.97 2.41 0.51 4.25 8.19 12 0.150
DI 228-6 62.0 123.9 3,080 0.165
DI 255-6 90.3 180.6 2,800 14,600 2.69 3.56 5.20 5.47 3.74 2.36 2.54 0.51 4.38 9.10 22 0.185
DI 278-6 125.7 251.4 2,560 0.205
DI 302-6 177.0 354.0 2,400 12,300 3.13 4.13 6.22 6.50 4.41 2.76 3.12 0.67 5.50 11.02 40 0.224
DI 325-6 221.3 442.6 2,200 0.256
DI 345-6 274.4 549 2,040 10,500 3.75 4.94 7.28 7.60 5.28 3.15 3.48 0.75 6.31 12.61 62 0.272
DI 380-6 374.4 749 1,880 0.299
DI 410-6 505 1,011 1,740 9,600 4.06 5.38 7.95 8.27 5.67 3.54 4.12 0.87 7.31 14.39 84 0.323
DI 440-6 651 1,301 1,680 0.346
DI 475-6 814 1,629 1,520 8,500 4.50 5.94 8.98 9.29 6.30 3.94 4.48 0.94 8.06 15.94 121 0.374
DI 505-6 1,036 2,071 0.398
7,700 4.94 6.63 10.04 10.35 6.89 4.53 5.51 1.06 9.88 18.94 159

7,000 5.50 7.31 10.94 11.26 7.68 4.92 5.63 1.18 10.06 19.90 223

6,400 6.13 7.88 11.89 12.20 8.54 5.31 6.15 1.26 11.06 21.68 293

6,000 6.75 8.44 12.80 13.11 9.45 5.71 6.21 1.26 11.25 22.67 353

5,500 7.13 9.13 13.58 13.98 10.04 6.10 7.18 1.18 12.63 24.83 425

5,100 8.31 9.88 14.96 15.35 11.61 6.69 7.49 1.26 13.63 27.01 578

4,700 8.88 10.63 16.14 16.54 12.40 7.28 8.12 1.42 14.75 29.31 739

4,350 9.25 11.44 17.32 17.72 12.99 7.68 9.10 1.61 16.38 31.74 875

4,200 9.94 12.25 18.70 19.09 13.98 8.27 9.94 1.81 17.75 34.29 1,113

3,800 10.88 13.13 19.88 20.28 15.16 9.06 10.81 1.81 19.31 37.43 1,391

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-19

Disc Couplings Dimensional Data

DI-8 Drop in (API) Style 5-piece Disc Coupling, 8-bolt

OAL LS
LS BSE

FD
SD
D JD

STANDARD
HUB

SPACER GUARD JUMBO
RING HUB

Cplg. NOM. PEAK MAX1 MAX2 AXIAL6
Type TORQ. TORQ. SPEED SPEED
UNBAL. BAL. DIMENSIONS (mm) Misalig.
DI Nm Nm r.p.m. r.p.m.
Size x103 x103 2,800 7,000 MAX BORE MAX BORE FD D JD LS Weight5 ±∆Ka
DI 278-8 20.0 40.0 2,560 6,400 Standard Jumbo 332 195 260 125
DI 302-8 30.0 60.0 2,400 6,000 185 SD 356 217 285 135 BSE OAL kg mm
DI 325-8 37.0 74.0 2,200 5,500 140 200 278 400 240 305 145
DI 345-8 46.0 92.0 2,040 5,100 155 215 302 417 255 322 155 256 505 130 3.7
DI 380-8 63.0 126.0 1,880 4,700 170 230 325 455 295 360 170
DI 410-8 86.0 172.0 1,740 4,350 180 255 345 498 315 390 185 281 551 164 4.0
DI 440-8 110.0 220.0 1,680 4,200 210 275 380 528 330 420 195
DI 475-8 138.0 276.0 1,520 3,800 225 300 410 585 355 450 210 286 576 213 4.3
DI 505-8 175.0 350.0 1,440 3,600 235 320 440 615 385 480 230
DI 540-8 220.0 440.0 1,360 3,400 250 341 475 670 415 508 240 321 631 250 4.6
DI 570-8 259.0 518 1,280 3,200 275 360 505 702 450 540 250
DI 605-8 315.0 630 295 385 540 727 460 565 265 346 686 325 5.0
320 400 570
325 605 375 744 412 5.4

416 806 480 5.8

450 870 632 6.3

490 951 794 6.7

560 1,040 840 7.2

607 1,106 950 7.6

621 1,151 1,120 7.8

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (in) AXIAL6
Type TORQ. TORQ. SPEED SPEED Misalig.
D in-lbs in-lbs UNBAL. BAL. MAX BORE MAX BORE SD FD D JD LS BSE OAL Weight5 ±∆Ka
DI x103 x103 r.p.m. r.p.m. Standard Jumbo 10.95 13.07 7.68 10.24 4.92 10.06 19.90 lbs
Size 177.0 354.0 2,800 7,000 7.31 11.89 14.02 8.54 11.22 5.32 11.06 21.70 287 inch
DI 278-8 265.5 2,560 6,400 5.50 7.88 12.80 15.75 9.45 12.00 5.71 11.25 22.67 362 0.146
DI 302-8 327.5 531 2,400 6,000 6.13 8.50 13.58 16.42 10.04 12.68 6.10 12.63 24.83 470 0.157
DI 325-8 407.1 655 2,200 5,500 6.75 9.06 14.96 17.91 11.61 14.17 6.69 13.63 27.01 551 0.169
DI 345-8 814 2,040 5,100 7.13 10.13 16.14 19.60 12.40 15.35 7.28 14.75 29.31 717 0.181
DI 380-8 558 1,115 1,880 4,700 8.31 10.94 17.32 20.79 12.99 16.54 7.68 16.38 31.74 908 0.197
DI 410-8 761 1,522 1,740 4,350 8.88 11.88 18.70 23.03 13.98 17.72 8.27 17.72 34.26 1,058 0.213
DI 440-8 974 1,947 1,680 4,200 9.25 12.63 19.88 24.21 15.16 18.90 9.06 19.31 37.43 1,393 0.228
DI 475-8 1,221 2,443 1,520 3,800 9.94 13.44 21.26 26.38 16.34 20.00 9.45 22.06 40.96 1,750 0.248
DI 505-8 1,549 3,098 1,440 3,600 10.88 14.25 22.44 27.64 17.72 21.26 9.84 23.88 43.56 1,852 0.264
DI 540-8 1,947 3,894 1,360 3,400 11.63 15.25 23.82 28.62 18.11 22.24 10.43 24.44 45.30 2,094 0.283
DI 570-8 2,292 4,585 1,280 3,200 12.63 15.94 2,469 0.299
DI 605-8 2,788 5,576 12.88 0.307

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-20

Disc Couplings Dimensional Data

SXGS Replacement for Floating Shaft Gear Coupling Reduced Moment

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (mm) AXIAL6
Type TORQ. TORQ. SPEED SPEED
SX UNBAL. BAL. Misalig.
Size Nm Nm r.p.m. r.p.m.
SXGS 132-6 / 1 x103 x103 5,840 14,600 MAX BSE S Weight 5 ±∆Ka
SXGS 158-6 / 1.5 4,920 12,300 BORE
SXGS 185-6 / 2 1.1 2.2 4,200 10,500 FD SD CH LS MIN MIN kg mm
SXGS 202-6 / 2.5 2.0 4.0 3,480 9,600 50 132 116
SXGS 255-6 / 3 3.3 6.6 3,080 7,700 60 158 152 66 60 97 85 8 2.6
SXGS 287-8 / 3.5 4.6 9.2 2,800 7,000 70 185 178
SXGS 302-8 / 4 10.2 20.4 2,560 6,400 75 202 213 81 70 132 110 16 3.1
SXGS 325-8 / 4.5 20.0 40.0 2,400 6,000 95 255 240
SXGS 345-8 / 5 30.0 60.0 2,200 5,500 100 278 279 96 80 147 115 24 3.7
SXGS 380-8 / 5.5 37.0 74.0 2,040 5,100 110 302 318
SXGS 410-8 / 6 46.0 92.0 1,880 4,700 115 325 346 110 90 175 135 38 3.8
SXGS 540-8 / 7 63.0 126.0 1,440 3,600 125 345 389
86.0 172.0 140 380 425 130 115 165 135 57 4.7
110.0 220.0 150 410 457
195 540 527 150 125 225 175 91 3.7

160 135 225 175 118 4.0

165 145 215 175 134 4.3

185 155 280 220 196 4.6

200 170 280 220 245 5.0

200 185 210 180 245 5.4

235 240 190 180 508 7.2

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (in) AXIAL6
Type TORQ. TORQ. SPEED SPEED Misalig.
SX in-lbs in-lbs UNBAL. BAL. MAX BSE S Weight 5 ±∆Ka D
Size x103 x103 r.p.m. r.p.m. BORE
SXGS 132-6 / 1 19.5 5,840 14,600 2.06 FD SD CH LS MIN MIN lbs in
SXGS 158-6 / 1.5 9.7 35.4 4,920 12,300 2.38 0.102
SXGS 185-6 / 2 17.7 58.4 4,200 10,500 2.75 5.20 4.56 2.60 2.36 3.82 3.35 17 0.122
SXGS 202-6 / 2.5 29.2 81.4 3,840 9,600 3.06 0.146
SXGS 255-6 / 3 40.7 180.6 3,080 7,700 3.88 6.22 6.00 3.19 2.76 5.20 4.33 35 0.150
SXGS 287-8 / 3.5 90.3 2,800 7,000 4.06 0.185
SXGS 302-8 / 4 177.0 354 2,560 6,400 4.44 7.28 7.00 3.78 3.15 5.79 4.53 53 0.146
SXGS 325-8 / 4.5 265.5 531 2,400 6,000 4.68 0.157
SXGS 345-8 / 5 327.5 655 2,200 5,500 5.00 7.95 8.38 4.33 3.54 6.89 5.31 84 0.169
SXGS 380-8 / 5.5 407.1 814 2,040 5,100 5.50 0.181
SXGS 410-8 / 6 558 1,115 1,880 4,700 6.06 10.04 9.44 5.12 4.53 6.50 5.31 126 0.197
SXGS 540-8 / 7 761 1,522 1,440 3,600 7.75 0.213
1,947 3,894 10.95 11.00 5.90 4.92 8.86 6.89 201 0.283

11.89 12.50 6.30 5.32 8.86 6.89 260

12.80 13.63 6.50 5.71 8.46 6.89 295

13.58 15.31 7.28 6.10 11.02 8.66 432

14.96 16.75 7.87 6.69 11.02 8.66 540

16.14 18.00 7.87 7.28 8.27 7.09 560

21.26 20.75 9.25 9.45 7.48 7.09 1,120

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.

D-21

Disc Couplings Dimensional Data

Replacement for Floating Shaft Gear Coupling Drop-In Style

S

RD FD
FD RD

D

P SE P

DIR

DILR

Cplg. NOM. PEAK MAX1 MAX2 DIMENSIONS (mm) AXIAL6

Type TORQ. TORQ. SPEED SPEED Misalig.

SX Nm Nm UNBAL. BAL. MAX BORE BSE Weight 5 ±∆Ka

Size x103 x103 r.p.m. r.p.m. STD. KEY FD RD D LP LS MIN kg mm

DIR 132-6 / 1 1.1 2.2 5,840 14,600 56 132 116 78 40 42 170 5 2.6

DIR 158-6 / 1.5 2.0 4.0 4,920 12,300 76 158 152 101 47 48 225 11 3.1

DIR 185-6 / 2 3.3 6.6 4,200 10,500 95 185 178 125 58 60 265 17 3.7

DIR 202-6 / 2.5 4.6 9.2 3,480 9,600 114 202 213 150 74 73 300 24 3.8

DIR 255-6 / 3 10.2 20.4 3,080 7,700 134 255 240 176 86 84 365 42 4.7

DIR 287-8 / 3.5 20.0 40.0 2,800 7,000 150 278 279 201 101 97 405 67 3.7

DIR 302-8 / 4 30.0 60.0 2,560 6,400 176 302 318 235 113 108 440 86 4.0

DIR 325-8 / 4.5 37.0 74.0 2,400 6,000 202 325 346 264 128 122 455 102 4.3

DIR 345-8 / 5 46.0 92.0 2,200 5,500 231 345 389 294 145 140 500 139 4.6

DIR 380-8 / 5.5 63.0 126.0 2,040 5,100 260 380 425 325 156 152 545 179 5.0

DIR 410-8 / 6 86.0 172.0 1,880 4,700 288 410 457 356 188 170 555 199 5.4

DIR 540-8 / 7 110.0 220.0 1,440 3,600 318 540 527 400 221 187 680 419 7.2

Metric dimensions are rounded to the nearest “mm” except where otherwise shown.

Cplg. NOM. PEAK MAX2 DIMENSIONS (in) AXIAL6
Type TORQ. TORQ. SPEED Misalig.
D SX in-lbs in-lbs BAL. ±∆Ka
Size x103 x103 r.p.m.
DIR 132-6 / 1 19.5 14,600 MAX. BORE MAX BORE BSE Weight 5 inch
DIR 158-6 / 1.5 9.7 35.4 12,300 STD. KEY RED. KEY 0.102
DIR 185-6 / 2 17.7 58.4 10,500 FD RD D LP LS MIN lb 0.122
DIR 202-6 / 2.5 29.2 81.4 2.13 2.25 5.20 4.56 3.06 1.56 0.146
DIR 255-6 / 3 40.7 180.6 9,600 2.81 3.06 6.22 6.00 3.97 1.84 1.66 6.69 11 0.150
DIR 287-8 / 3.5 90.3 7,700 3.50 3.75 7.28 7.00 4.91 2.28 0.185
DIR 302-8 / 4 177.0 354 7,000 4.25 4.50 7.95 8.38 5.91 2.90 1.88 8.86 24 0.146
DIR 325-8 / 4.5 265.5 531 6,400 4.88 5.25 10.04 9.44 6.91 3.40 0.157
DIR 345-8 / 5 327.5 655 6,000 5.63 5.88 10.95 11.00 7.91 3.96 2.38 10.43 37 0.169
DIR 380-8 / 5.5 407.1 814 5,500 6.50 6.50 11.89 12.50 9.25 4.43 0.181
DIR 410-8 / 6 558 1,115 5,100 7.38 7.63 12.80 13.63 10.38 5.03 2.88 11.81 53 0.197
DIR 540-8 / 7 761 1,522 4,700 8.38 8.75 13.58 15.31 11.56 5.69 0.213
1,947 3,894 3,600 9.25 9.75 14.96 16.75 12.81 6.15 3.31 14.37 93 0.283
11.13 10.75 16.14 18.00 14.00 7.41
11.25 12.00 21.26 20.75 15.75 8.69 3.81 15.94 148

4.25 17.32 190

4.81 17.91 225

5.50 19.69 306

6.00 21.46 395

6.69 21.85 439

7.38 26.77 924

Larger sizes are available on demand.
1) Operating speed must be equal or less than permissible speed. Permissible speeds could be limited by the weight and critical speeds of spacers.
2) For higher speeds consult Lovejoy.
3) The maximum bores shown are for cylindrical or taper shafts with keys. For other type of connections consult Lovejoy.
4) Dimension BSE is the distance between shaft ends and is a variable parameter.
5) Weight of complete coupling with BSE min. dimension and max. bore.
6) The value for axial misalignment is given for a complete 2 Disc pack. Angular misalignment is given per pack. Refer to page 3 for combined permissible

misalignment.
7) DIR is with rigid hubs. DILR are less rigid hubs.

D-22

Disc Couplings Dimensional Data

Various examples for the disc coupling

Our Application Engineering Department is ready to supply the most suitable configuration to fit your requirements.

SU Type SXAC Type
(Single disc pack) (with clamping element)

SXFS Type D
(With floating shaft)

SXV Type
(For vertical mounting)

SXCS Type (over size 302) SXCAC Type
(Spacer in 2 halves) (With internal clamping element)

D-23

Disc Couplings Dimensional Data

SXFA Type SXEI Type
(With flanged adaptors) (With electrical insulation)

D SXSP Type SXLEF Type
(With shear pins) (Limited end float)

SXHP Type
(High performance)

D-24

Disc Couplings Technical Data

Engineering Section/Bore and Keyway Standards

Inch Bore Standards to AGMA 9002-A96 Metric Bore per ISO/R775;1969 (mm) H7

Shaft Diameter inches Shaft Diameter mm

Nominal Shaft Over Thru Tolerance
13 H7 mm
Over Thru Diam. Less Bore Tolerance 36
0.001 +0.0005 -0.000 6 10 +0.010 -0.0
— 1.5000 0.002 +0.0010 -0.000 10 18 +0.012 -0.0
0.003 +0.0015 -0.000 18 30 +0.015 -0.0
1.5000 3.0000 0.0035 +0.0015 -0.000 30 50 +0.018 -0.0
0.004 +0.0015 -0.000 50 80 +0.021 -0.0
3.0000 4.0000 0.005 +0.002 -0.000 80 120 +0.025 -0.0
0.0055 +0.002 -0.000 +0.030 -0.0
4.0000 5.0000 120 180 +0.035 -0.0
180 250 +0.040 -0.0
5.0000 7.0000 250 315 +0.046 -0.0
315 400 +0.052 -0.0
7.0000 8.0000 +0.057 -0.0

8.0000 9.0000

Keyway Standards for Inch Bores Keyway Standards for Metric Bores JS9

Nominal Bore Nominal Keyway inches Nominal Key inches Nominal Bore Diam. Nominal Keyway mm Nominal Key mm D
Diam. Inches Square (up to 6.5000 Width Height mm Width Depth Width Height
Over To inches), rectangular 0.1250 0.1250
0.4375 0.5625 0.1875 0.1875 Over To 2 1.0 22
0.5625 0.8750 over 0.2500 0.2500 68 3 1.4 33
0.8750 1.2500 Width Depth 0.3125 0.3125 8 10 4 1.8 44
1.2500 1.3750 0.1250 0.0625 0.3750 0.3750 10 12 5 2.3 55
1.3750 1.5000 0.1875 0.0937 0.3750 0.3750 12 17 6 2.8 66
1.5000 1.7500 0.2500 0.1250 0.5000 0.5000 17 22 8 3.3 87
1.7500 2.0000 0.3125 0.1562 0.5000 0.5000 22 30 10 3.3 10 8
2.0000 2.2500 0.3750 0.1875 0.6250 0.6250 30 38 12 3.3 12 8
2.2500 2.7500 0.3750 0.1875 0.7500 0.7500 38 44 14 3.8 14 9
2.7500 3.0000 0.5000 0.2500 0.7500 0.7500 44 50 16 4.3 16 10
3.0000 3.2500 0.5000 0.2500 0.8750 0.8750 50 58 18 4.4 18 11
3.2500 3.7500 0.6250 0.3125 1.0000 1.0000 58 65 20 4.9 20 12
3.7500 4.0000 0.7500 0.3750 1.0000 1.0000 65 75 22 5.4 22 14
4.0000 4.5000 0.7500 0.3750 1.2500 1.2500 75 85 25 5.4 25 14
4.5000 5.0000 0.8750 0.4375 1.2500 1.2500 85 95 28 6.4 28 16
5.0000 5.5000 1.0000 0.5000 1.5000 1.5000 95 110 32 7.4 32 18
5.5000 6.5000 1.0000 0.5000 1.7500 1.5000 110 130 36 8.4 36 20
6.5000 7.0000 1.2500 0.6250 1.7500 1.5000 130 150 40 9.4 40 22
7.0000 7.5000 1.2500 0.6250 2.0000 1.5000 150 170 45 10.4 45 25
7.5000 8.0000 1.5000 0.7500 2.0000 1.5000 170 200 50 11.4 50 28
8.0000 9.0000 1.7500 0.7500 200 230 56 12.4 56 32
1.7500 0.7500 230 260 63 12.4 63 32
2.0000 0.7500 260 290 70 14.4 70 36
2.0000 0.7500 290 330 80 15.4 80 40
330 380 90 17.4 90 45
380 440

D-25

Disc Couplings Installation Instructions

Installation of hubs. Machinery alignment.
Installation of disc packs and spacer.

1. Installation of the hubs on the machine shafts.

a) Straight shafts with keyway.
Lovejoy/Jaure supplies inch dimensioned hub bores to AGMA 9002-A96 interference fit.

b) Metric bored straight shafts.

Lovejoy supplies disc hubs machined with clearance to H7 or interference to P7. Lovejoy/Jaure recommends that the shaft should be machined for an
interference fit using tolerance s6 (ISO-286). Whenever shafts are already machined with a different tolerance from s6, Lovejoy will customize the hub bores.
The following tolerances are recommended by Lovejoy.

Shaft tolerance Hub tolerance
h6 T7
k6 R7
m6 P7
n6 N7
p6 M7

c) Clamping devices.

When clamping devices such as tapered bushings, shrink discs or locking rings are used, please contact the Lovejoy Application Engineering Department.

2. Machinery Alignment.

As long as the machines are aligned within the mounting specifications from this catalog, the disc couplings will operate for a long time. However, it should be
understood that the useful life of any disc pack coupling is directly influenced by the operating misalignment: the better the alignment, the longer the coupling
life.

D Although the disc couplings can operate satisfactorily at the misalignment listed in the catalog, both the coupling life and machine bearing wear can be greatly
improved if the machines are aligned better than the maximum value that the coupling can accommodate. Lovejoy/Jaure recommends that the working
misalignment should not exceed 20% of the catalog values. Therefore, the following formulas show Lovejoy/Jaure´s recommendations for maximum
misalignment.

Three types of machine misalignment (offset, angular and axial) should be checked. Lovejoy/Jaure has the following recommendations:

• The maximum offset misalignment that the disc coupling can accommodate is a function of the distance between the disc packs. For the configurations
SX, this distance is practically the same as the distance between the shaft ends. This statement is not valid for other configurations, such as SXC, DI, SXGS,
and DIR.

If shafts have an offset misalignment with minimum angular misalignment, the following maximum values for the offset are applicable.

Disc with 6 bolts TIR ≤( disc pack to disc pack distance ) / 150

Disc with 8 bolts TIR ≤ ( disc pack to disc pack distance ) / 300

Disc with 10 bolts TIR ≤ ( disc pack to disc pack distance ) / 350

(NOTE: TIR is the Total Indicator Reading, which is twice the shaft offset )

D-26

Disc Couplings Installation Instructions

The maximum angular misalignment at each disc pack is listed in the tables. This angular misalignment can be verified by measuring the flange-to-flange
distance (see figure below) and subtracting the smallest reading from the largest reading (Y-Z). The maximum value of (Y-Z) depends on the flange diameter
and therefore on the coupling size. Based on the data from the tables, the following maximum values for (Y-Z) are recommended:

Disc with 6 bolts (Y-Z) ≤ Coupling size / 7620
Disc with 8 bolts (Y-Z) ≤ Coupling size / 15420
Disc with 10 bolts (Y-Z) ≤ Coupling size / 17780

Example: For Disc size 380-6 ( maximum angular misalignment of 1° ). (Y-Z) should not exceed 380/7620 = .05 inch.

The axial displacement allowable between shafts during installation should not exceed 20% of the allowable displacement given in the catalog. This
displacement is a function of the coupling size and the number of bolts utilized. The larger the size, the larger axial displacement. The axial displacement
creates large stresses in the discs. For a long life, it is recommended that the discs are as close as possible to being flat. Therefore, the movements of the
shafts as caused by thermal expansion should be carefully considered. For instance, if the distance between shaft ends changes by .196 in. (the shafts are
coming closer to each other) from cold to hot machines, the distance between shaft ends with cold machines should intentionally be made larger by .196 in.
when the coupling is installed.

3. Installation of disc packs and spacer.

The installation of the coupling components depends on the type of disc coupling: the only tools needed are regular wrenches or sockets and a torque wrench.
Tightening the bolts of a coupling to specification is very important.

Disc Pack Bolt Tightening Torque (dry thread)
For all styles

Size Nm ft-lbs Size Nm ft-lbs Size Nm ft-lbs
302 600 443 540 4,100 3,024
90 13 9.6 325 600 443 570 5,100 3,762
345 780 575 605 6,200 4,573
110 30 22 380 1,100 811 635 7,600 5,606
410 1,500 675 9,900 7,302
132 30 22 440 2,000 1,106 700 12,200 8,999
475 2,600 1,475 730 12,200 8,999
158 60 44 505 3,300 1,918 760 14,800 10,916
2,434
185 100 74

202 150 111

228 230 170

255 450 332

278 450 332 D

Note: For lubricated threads, multiply the values by 0.8.

Spacer and Flange Bolt Rightening Torque (dry thread)
For styles SXGS, DILR, and DIR styles

Size Nm ft-lbs Size Nm ft-lbs
220
132-6/ 1 15 11 302-8/ 4 298 220
304
158-6/ 1.5 47 35 325-8/ 4.5 298 304
304
185-6/ 2 106 78 345-8/ 5 412 304

202-6/ 2.5 197 145 380-8/ 5.5 412

255-6/ 3 197 145 410-8/ 6 412

278-8/ 3.5 298 220 540-8/ 7 412

Note: For lubricated threads, multiply the values by 0.8.

Hub Bolt Tightening Torque for styles DI-6 and DI-8

Size Nm ft-lbs Size Nm ft-lbs Size Nm ft-lbs Size Nm ft-lbs
302-6 780 575
90-6 15 11 325-6 780 575 278-8 108 80 475-8 660 487
345-8 580 428
110-6 35 26 380-6 780 575 302-8 108 80 505-8 660 487
410-6 1000 738
132-8 35 26 440-6 1500 1106 325-8 325 240 540-8 760 551
475-6 2000 1475
158-6 69 51 505-6 2000 1475 345-8 325 240 570-8 760 561

185-6 120 89 380-8 325 240 605-8 760 561

202-6 190 140 410-8 565 417

228-6 295 218

255-8 580 428

278-6 580 428

Note: For lubricated threads, multiply the values by 0.8.

D-27

Disc Couplings Installation Instructions

D a) Standard configuration. SX and SXO types.
The only bolts to be installed and tightened are the ones that attach the disc packs to the hubs and spacer. Place the spacer and install the bolts with their
heads at the flange and not at the disc pack. The nuts shall be turned with the torque wrench to the specified torque, while the heads of the bolts are held
stationary.

b) Close coupled configuration. SXC and SXCO types.
The SXC coupling type was created for use with machines that have the shafts too close for the use of the standard SX coupling. The outside diameter of the
hubs was reduced to be inserted in the inside of the hole of the disc pack.

To install the hubs on their shafts, the shafts must be spaced apart at least the length of one hub (see dimension LS in the table). To install the coupling, the
disc packs can be first attached with their bolts to the spacer, then slide over one of the hubs and attached to it. Next, the machines must be brought in
position so that the second disc pack can be attached to its hub.

The machine alignment can now be performed. Because the spacer covers the shaft ends, the axial spacing must be checked by measuring the flange to
flange distance (dimension “PW” in tables). The offset and angular misalignments can be checked as previously described.

The bolts that attach the disc packs to the hubs and spacer must be tightened to specification (using a torque wrench at the nuts) while the bolt heads are held
stationary.

c) Drop-out configuration. DI type.
The drop-out configuration allows the installation and removal of the coupling assembly without the need to remove the hubs from their shafts. The coupling is
received from Lovejoy/Jaure fully assembled with the bolts tightened to specifications. If, however, there is a need to disassemble the coupling assembly (in
case the disc packs need to be replaced) the nuts should be tightened to specification using a torque wrench while the bolt heads are held stationary.
Machine alignment should be done before the coupling assembly is in place.

The coupling assembly will not fit between the hubs as long as the shaft-to-shaft distance was correctly set. The coupling ends should be brought together by
compressing the disc packs using the shipping screws so that the assembly will fit between the male rabbets.

Once in position, the coupling will snap in place and the bolts that attach the assembly to the shaft hubs must be tightened to Lovejoy/Jaure specifications using
a torque wrench. This operation must be carefully performed as these bolts transmit the full coupling torque.

To remove the coupling assembly, first remove all the bolts that retain it to the hubs. Then compress the assembly by introducing the existing flange bolts in the
shipping holes and press the coupling away from the male rabbets.

d) Reduced moment coupling with spacer according to AGMA 516, SXGS type.
The reduced moment configuration is used whenever the shaft stresses require that the center of gravity of the coupling is very close to the machine bearings.
This configuration also allows either machine to be removed by dropping the spacer without the need to disturb the disc-pack assemblies.

The installation of this coupling requires the following steps:
–Install the hubs on their shafts.
–Measure and adjust the shaft-to-shaft (BSE) distance.
–Align the machine shafts as previously described.
–Attach one disc pack and a short sleeve at each hub, by tightening the nuts to specifications, while holding the bolt heads stationary.
–Place the spacer between the two sleeves. It should fit without interference or without a gap remaining between the flanges. Correct the machine spacing if
necessary, as any axial displacement can adversely affect the coupling´s long term performance.
–Insert the flange bolts and tighten the nuts to specifications using a torque wrench and adaptor while holding the bolt heads stationary.
–Recheck the alignment and correct if necessary.

e) Drop-out coupling with floating assembly, flanges according to AGMA 516, DIR type.
Machine alignment should be done before the coupling assembly is in place. The drop-out configuration allows the installation and removal of the coupling
assembly without the need to remove the hubs from their shafts. The coupling is received from Lovejoy/Jaure fully assembled with the bolts tightened to
specifications. If, however, there is a need to disassemble the coupling assembly (in case the disc packs need to be replaced) the nuts should be tightened to
specification using a torque wrench while the bolt heads are held stationary.

The coupling assembly will fit between the hubs as long as the shaft-to-shaft distance was correctly set. Once in position, the nuts that attach the assembly to
the shaft hubs must be tightened to specifications using a torque wrench and adaptor while the bolt heads are held stationary. This operation must be carefully
performed, as these bolts transmit the full coupling torque.

D-28