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 throughout 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 requirements for these low maintenance, long life couplings. The Lovejoy/Jaure disc coupling utilizes the latest design efforts through Finite Element Analysis, extensive 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.
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.
D
• 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
Note: Specifications are subject to change without notice, and without liability therefore.
D-2
*It is not recommended that the coupling be
operated without a guard.
**Patent Pending.
Disc Couplings
General Overview
The angular misalignment between shafts can vary from 0 to 2 times α as per the figure shown:
α = represents the angular
misalignment per disc-pack.
offset
α°
α (for Lamidisc-6 under 202) = 1.5°
α
°
α (for Lamidisc-8) = 0.5°
α (for Lamidisc-10) = 0.4°
offset
α°
α°
2 α°
2x
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,
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.
Different disc profiles
D-3
D
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.
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
MINING AND STONES
2.5
1.0
1.25
1.5
1.5
2.0
2.0
Crushers
Mills
Mine ventilators
Vibrators
2.5
2.5
2.0
1.5
BLOWERS , FANS
Centrifugal
Lobe / Vane / Turboblowers
Forced draught fans
Induc.draught with damper
Induc.draught without control
Cooling towers
CHEMICAL INDUSTRY
Agitators (thin liquid)
Agitators (viscous liquid)
Centrifuges (light)
Centrifuges (heavy)
Mixers
1.0
1.5
1.25
1.75
1.75
COMPRESSORS
Centrifugal
Lobe/Rotary
Turbocompressors
Reciprocating:
1 to 3 cylinders
4 or more cylinders
1.0
1.25
1.75
3.0
1.75
D
CONVEYOR, HOISTS, ELEVATORS
Conveyors:
Screw / Apron / Belt / Chain
Bucket / Rotary / Lifts
Reciprocating
Hoists:
Medium duty
Heavy duty
Elevators:
Centrifugal and gravity disch.
2.5
3.0
1.25
DREDGERS
FOOD INDUSTRY
2.0
Packaging machines and fillers.
Kneading machines.
Cane crushers
Cane cutters
Cane mills
Sugar beet cutters
Sugar beet washing machines
1.25
1.5
1.5
1.5
2.0
1.5
1.5
GENERATORS
Even load
Frequency converters
Welding generators
1.0
1.5
2.0
MACHINE TOOLS
Main Drives
Auxiliary and transverse drives
2.0
1.5
METAL WORKING
Presses / Hammers.
Straighteners.
Bending machines / Shears.
Punching machines
D-4
OIL INDUSTRY
Pipeline pumps
Rotary drilling equipment
2.0
2.0
2.25
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
1.5
2.0
Centrifugal,General Feed or Boiler Feed
Centrifugal , Slurry
Centrifugal , Dredge
Rotary / Gear / Lobe or Vane
Reciprocating :
1 cylinder
2 cylinder , single acting
2 cylinders , double acting
3 cylinders or more
2.0
2.5
1.5
2.5
2.0
2.0
Printing and drying machines
Tanning vats
Calenders
Looms
1.5
1.5
1.5
1.5
WATER AND WASTE INDUSTRY
Aerators , Screw pumps , Screens.
1.5
WOOD WORKING MACHINERY
1.75
1.0
1.5
2.0
1.5
3.0
2.0
1.75
1.5
Trimmers, Barkers , Saws, Planes
2.5
1.5
2.0
2.5
1.5
2.0
1.5
2.0
3.0
2.5
2.5
2.5
2.0
2.0
1.5
1.5
2.5
1.5
2.5
1.5
2.0
The factors in Table 1 are for general guidance and
can be modified by customers´ specialist
knowledge of their own equipment.
Driving machine service factor SFD Table 2.
Driving equipment
Multi-cylinder engine
8 or more
6
4 or 5
Less than 4
ROLLING MILLS
Billet shears
Chain transfers
Cold rolling mills
Continuous casting plants
Cooling beds
Cropping shears
Cross transfers
Descaling machines
Heavy and medium duty mills
Ingot and blooming mills
Ingot handling machinery
Ingot pushers
Manipulators
Plate shears
Roller adjustment drives
Roller straighteners
Roller tables (heavy)
Roller tables (light)
Sheet mills
Trimming shears
1.75
Calender
Mixing mill / Refiner / Crusher
TEXTILE MACHINES
PLASTIC INDUSTRY
Calenders, Crushers , Mixers.
RUBBER INDUSTRY
Extruder
Blast furnace blowers
Converters
Inclined blast furnace elev.
Crushers
PAPER INDUSTRY
Calenders
Couches
Drying cylinders
Pulpers
Pulp grinders
Suction rolls
Wet presses
Reels
Agitators
2.0
1.5
1.5
STEEL PLANTS
1.5
2.0
PUMPS
1.25
1.5
3.0
Tube and welding machines
Winding machines
Wire drawing benches
SFD
0.5
1.0
1.5
Refer to Lovejoy
Variable speed motors
Electric motors1 and turbines
0.8
0
Except variable speed motors
1
Please consult our Application Engineering
Department if axial excitations are foreseeable
either on the driving or driven side.
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.
1.5°
6 Bolts ((under 202))
1°
6 Bolts ((above 202))
0.5°°
0.4°
0.6°
8 Bolts
10 Bolts
0.3°
50% of max.
Max.
Rated Torque
T
°
Angular misalignment
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°
1°
0.5°°
0.4°
6 Bolts ((under 202))
6 Bolts ((above 202))
0.6°
8 Bolts
10 Bolts
0.3°
50%
°
Max.
Axial Displacement
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.
Kr
S- ∆Ka
Kw
D
S+ ∆Ka
L
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
b) Electricmotor
TOTAL
1.0
0.0
1.0
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.
D
• 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
HP/100 RPM
kW/100 RPM
90-6
110-6
132-6
158-6
185-6
202-6
228-6
255-6
278-6
302-6
325-6
345-6
380-6
410-6
440-6
475-6
505-6
278-8
302-8
325-8
345-8
380-8
410-8
440-8
475-8
505-8
540-8
570-8
605-8
635-8
675-8
700-8
730-8
760-8
505-10
540-10
570-10
605-10
635-10
675-10
700-10
730-10
760-10
3.4
8.1
15.4
28.1
46.3
64.6
98.3
143.2
199.4
280.9
351.1
435.4
594
802
1,032
1,292
1,643
280.9
421.3
520
646
885
1,208
1,545
1,938
2,458
3,090
3,637
4,424
5,379
6,376
7,415
8,539
9,831
3,076
3,848
4,536
5,533
6,741
8,005
9,269
10,673
12,218
2.6
6.0
11.5
21.0
34.5
48.2
73.3
106.8
148.8
209.6
261.9
324.8
443.1
598
770
964
1,226
209.6
314.3
387.6
481.9
660
901
1,152
1,446
1,833
2,305
2,713
3,300
4,013
4,756
5,532
6,370
7,334
2,294
2,871
3,384
4,128
5,029
5,972
6,915
7,962
9,115
NOM.
TORQ.
in-lbs
x 103
2.1
5.1
9.7
17.7
29.2
40.7
62.0
90.3
125.7
177.0
221.3
274.4
374.4
505
651
814
1,036
177.0
265.5
327.5
407.1
558
761
974
1,221
1,549
1,947
2,292
2,788
3,390
4,018
4,673
5,381
6,196
1,938
2,425
2,859
3,487
4,248
5,045
5,842
6,727
7,700
NOM.
TORQ.
Nm
x 103
0.2
0.6
1.1
2.0
3.3
4.6
7.0
10.2
14.2
20.0
25.0
31.0
42.3
57.1
73.5
92.0
117.0
20.0
30.0
37.0
46.0
63.0
86.0
110.0
138.0
175.0
220.0
259.0
315.0
383.0
454.0
528
608
700
219.0
274.0
323.0
394.0
480.0
570
660
760
870
PEAK
TORQ.
in-lbs
x 103
4.2
10.2
19.5
35.4
58.4
81.4
123.9
180.6
251.4
354.0
442.6
549
749
1,011
1,301
1,629
2,071
354.0
531
655
814
1,115
1,522
1,947
2,443
3,098
3,894
4,585
5,576
6,780
8,037
9,347
10,763
12,391
3,877
4,850
5,718
6,975
8,497
10,090
11,683
13,454
15,401
PEAK
TORQ.
Nm
x 103
0.5
1.2
2.2
4.0
6.6
9.2
14.0
20.4
28.4
40.0
50.0
62.0
84.6
114.2
147.0
184.0
234.0
40.0
60.0
74.0
92.0
126.0
172.0
220.0
276.0
350.0
440.0
518
630
766
908
1056
1216
1400
438.0
548
646
788
960
1140
1320
1520
1740
AXIAL2
Misalig.
±∆Ka
inch
0.059
0.083
0.102
0.122
0.146
0.150
0.165
0.185
0.205
0.224
0.256
0.272
0.299
0.323
0.346
0.374
0.398
0.146
0.157
0.169
0.181
0.197
0.213
0.228
0.248
0.264
0.283
0.299
0.307
0.323
0.331
0.350
0.362
0.378
0.197
0.213
0.224
0.228
0.244
0.252
0.264
0.276
0.295
AXIAL2
Misalig.
±∆Ka
mm
1.5
2.1
2.6
3.1
3.7
3.8
4.2
4.7
5.2
5.7
6.5
6.9
7.6
8.2
8.8
9.5
10.1
3.70
4.00
4.30
4.60
5.00
5.40
5.80
6.30
6.70
7.20
7.60
7.80
8.20
8.40
8.90
9.20
9.60
5.0
5.4
5.7
5.8
6.2
6.4
6.7
7.0
7.5
Torsional3
Stiffness
x 106
in.-lbs./rad
2.4
3.4
4.4
5.8
11.5
13.3
23
41
63
84
115
150
195
248
310
372
443
84
132
181
221
301
354
434
531
646
788
912
1089
1248
1496
1637
1859
2053
Torsional3
Stiffness
x 106
Nm./rad
.3
0.4
0.5
0.7
1.3
1.5
2.6
4.7
7.1
9.5
13
17
22
28
35
42
50
9.5
14.9
20.4
25
34
40
49
60
73
89
103
123
141
169
185
210
232
Refer
Factory
Refer
Factory
Angular
Misalign.
Max
deg.
1.5°
1°
.5°
D
Cplg.
Size
.4°
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
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
D
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
Overview
Disc Couplings
Dimensional Data
SU-6, SUO-6 Industrial Single Unit Disc Coupling, 6-bolt
Cplg.
Type
SU
Size
SU 90-6
SU 110-6
SU 132-6
SU 158-6
SU 185-6
SU 202-6
SU 228-6
SU 255-6
SU 278-6
SU 302-6
SU 325-6
SU 345-6
SU 380-6
SU 410-6
SU 440-6
SU 475-6
SU 505-6
NOM.
TORQ.
Nm
x103
0.2
0.6
1.1
2.0
3.3
4.6
7.0
10.2
14.2
20.0
25.0
31.0
42.3
57.1
73.5
92.0
117.0
PEAK
TORQ.
Nm
x103
0.5
1.2
2.2
4.0
6.6
9.2
14.0
20.4
28.4
40.0
50.0
62.0
84.6
114.2
147.0
184.0
234.0
MAX1
SPEED
UNBAL.
r.p.m.
9,100
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL.
r.p.m.
22,700
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
DIMENSIONS (mm)
MAX
BORE
41
46
60
70
80
90
100
110
124
135
145
155
170
180
195
210
220
FD
90
110
132
158
185
202
228
255
278
302
325
345
380
410
440
475
505
D
58
65
84
98
112
125
140
155
174
190
206
217
238
255
273
295
310
LS
40
50
60
70
80
90
100
115
125
135
145
155
170
185
195
210
230
BSE
Standard
7.5
8.4
8.4
11.2
14
15.5
17.5
20.5
21.2
24.4
26
28.2
32
33.2
36.4
38.2
42
PW
7.5
8
8
11
14
16
18
21
21
24
26
28
32
33
36
38
42
OAL
88
108
128
151
174
195
218
251
271
295
316
338
372
403
427
458
502
AXIAL6
Misalig.
±∆Ka
mm
1.5
2.1
2.6
3.1
3.7
3.8
4.2
4.7
5.2
5.7
6.5
6.9
7.6
8.2
8.8
9.5
10.1
OAL
3.44
4.27
5.05
5.96
6.85
7.69
8.57
9.87
10.67
11.60
12.44
13.31
14.66
15.87
16.79
18.04
19.77
AXIAL6
Misalig.
±∆Ka
inch
0.059
0.083
0.102
0.122
0.146
0.150
0.165
0.185
0.205
0.224
0.256
0.272
0.299
0.323
0.346
0.374
0.398
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
NOM.
TORQ.
in-lbs
x103
2.1
5.1
9.7
17.7
29.2
40.7
62.0
90.3
125.7
177.0
221.3
274.4
374.4
505
651
814
1,036
PEAK
TORQ.
in-lbs
x103
4.2
10.2
19.5
35.4
58.4
81.4
123.9
180.6
251.4
354.0
442.6
549
749
1,011
1,301
1,629
2,071
MAX1
SPEED
UNBAL.
r.p.m.
9,100
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL.
r.p.m.
22,700
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
DIMENSIONS (in)
MAX
BORE
1.50
1.81
2.38
2.75
3.13
3.50
3.94
4.31
4.88
5.31
5.75
6.06
6.69
7.13
7.69
8.25
8.75
FD
3.54
4.33
5.20
6.22
7.28
7.95
8.98
10.04
10.95
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
D
2.28
2.56
3.31
3.86
4.41
4.92
5.51
6.10
6.85
7.48
8.07
8.55
9.37
10.04
10.75
11.62
12.20
LS
1.57
1.97
2.36
2.76
3.15
3.54
3.94
4.53
4.92
5.32
5.71
6.10
6.70
7.28
7.68
8.27
9.06
BSE
Standard
0.295
0.331
0.331
0.441
0.551
0.610
0.689
0.807
0.835
0.961
1.024
1.110
1.260
1.307
1.433
1.504
1.654
PW
0.295
0.331
0.331
0.441
0.551
0.610
0.689
0.807
0.835
0.961
1.024
1.110
1.260
1.307
1.433
1.504
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
D
Cplg.
Type
SU
Size
SU 90-6
SU 110-6
SU 132-6
SU 158-6
SU 185-6
SU 202-6
SU 228-6
SU 255-6
SU 278-6
SU 302-6
SU 325-6
SU 345-6
SU 380-6
SU 410-6
SU 440-6
SU 475-6
SU 505-6
Disc Couplings
Dimensional Data
SX-6, SXO-6 Industrial 3-piece Disc Coupling, 6-bolt
Cplg.
Type
SX
Size
SX 90-6
SX 110-6
SX 132-6
SX 158-6
SX 185-6
SX 202-6
SX 228-6
SX 255-6
SX 278-6
SX 302-6
SX 325-6
SX 345-6
SX 380-6
SX 410-6
SX 440-6
SX 475-6
SX 505-6
NOM.
TORQ.
Nm
x103
0.2
0.6
1.1
2.0
3.3
4.6
7.0
10.2
14.2
20.0
25.0
31.0
42.3
57.1
73.5
92.0
117.0
PEAK
TORQ.
Nm
x103
0.5
1.2
2.2
4.0
6.6
9.2
14.0
20.4
28.4
40.0
50.0
62.0
84.6
114.2
147.0
184.0
234.0
MAX1
SPEED
UNBAL.
r.p.m.
9,100
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL.
r.p.m.
22,700
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
DIMENSIONS (mm)
MAX
BORE
41
46
60
70
80
90
100
110
124
135
145
155
170
180
195
210
220
FD
90
110
132
158
185
202
228
255
278
302
325
345
380
410
440
475
505
D
58
65
84
98
112
125
140
155
174
190
206
217
238
255
273
295
310
LS
40
50
60
70
80
90
100
115
125
135
145
155
170
185
195
210
230
BSE
Standard
54
89
108
124
140
159
175
197
219
235
254
270
297
321
335
359
394
PW
4
8
8
11
14
16
18
21
21
24
26
28
32
33
36
38
42
S
46
72
91
102
112
128
140
156
177
186
202
214
233
254
262
283
310
OAL
134
189
228
264
300
339
375
427
469
505
544
580
637
690
725
779
854
Weight 5
kg
2.1
2.9
5.5
8.6
15
21
30
40
57
74
89
109
146
190
224
228
366
AXIAL6
Misalig.
±∆Ka
mm
1.5
2.1
2.6
3.1
3.7
3.8
4.2
4.7
5.2
5.7
6.5
6.9
7.6
8.2
8.8
9.5
10.1
Weight 5
lbs
5
6
12
19
33
46
66
88
125
163
196
240
321
418
493
634
805
AXIAL6
Misalig.
±∆Ka
inch
0.059
0.083
0.102
0.122
0.146
0.150
0.165
0.185
0.205
0.224
0.256
0.272
0.299
0.323
0.346
0.374
0.398
D
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
Cplg.
Type
SX
Size
SX 90-6
SX 110-6
SX 132-6
SX 158-6
SX 185-6
SX 202-6
SX 228-6
SX 255-6
SX 278-6
SX 302-6
SX 325-6
SX 345-6
SX 380-6
SX 410-6
SX 440-6
SX 475-6
SX 505-6
NOM.
TORQ.
in-lbs
x103
2.1
5.1
9.7
17.7
29.2
40.7
62.0
90.3
125.7
177.0
221.3
274.4
374.4
505
651
814
1,036
PEAK
TORQ.
in-lbs
x103
4.2
10.2
19.5
35.4
58.4
81.4
123.9
180.6
251.4
354.0
442.6
549
749
1,011
1,301
1,629
2,071
MAX1
SPEED
UNBAL.
r.p.m.
9,100
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL.
r.p.m.
22,700
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
DIMENSIONS (in)
MAX
BORE
1.50
1.81
2.38
2.75
3.13
3.50
3.94
4.31
4.88
5.31
5.75
6.06
6.69
7.13
7.69
8.25
8.75
FD
3.54
4.33
5.20
6.22
7.28
7.95
8.98
10.04
10.95
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
D
2.28
2.56
3.31
3.86
4.41
4.92
5.51
6.10
6.85
7.48
8.07
8.55
9.37
10.04
10.75
11.62
12.20
LS
1.57
1.97
2.36
2.76
3.15
3.54
3.94
4.53
4.92
5.32
5.71
6.10
6.70
7.28
7.68
8.27
9.06
BSE
Standard
2.13
3.50
4.25
4.88
5.50
6.25
6.88
7.75
8.63
9.25
10.00
10.63
11.68
12.62
13.19
14.13
15.50
PW
0.165
0.331
0.331
0.441
0.551
0.610
0.689
0.807
0.835
0.961
1.024
1.110
1.260
1.307
1.433
1.504
1.654
S
1.80
2.84
3.59
4.00
4.40
5.03
5.50
6.14
6.96
7.33
7.95
8.41
9.16
10.01
10.32
11.12
12.19
OAL
5.27
7.44
8.97
10.40
11.80
13.33
14.76
16.81
18.47
19.89
21.42
22.83
25.08
27.18
28.55
30.67
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.
Type
SX
Size
SX 278-8
SX 302-8
SX 325-8
SX 345-8
SX 380-8
SX 410-8
SX 440-8
SX 475-8
SX 505-8
SX 540-8
SX 570-8
SX 605-8
SX 635-8
SX 675-8
SX 700-8
SX 730-8
SX 760-8
NOM.
TORQ.
Nm
x103
20
30
37
46
63
86
110
138
175
220
259
315
383
454
528
608
700
PEAK
TORQ.
Nm
x103
40
60
74
92
126
172
220
276
350
440
518
630
766
908
1,056
1,216
1,400
MAX1
SPEED
UNBAL.
r.p.m.
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1,440
1,360
1,280
1,240
1,160
1,120
1,080
1,040
MAX2
SPEED
BAL.
r.p.m.
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
3,600
3,400
3,200
3,100
2,900
2,800
2,700
2,600
DIMENSIONS (mm)
MAX
BORE
124
135
145
155
170
180
195
210
220
235
250
265
275
290
300
315
330
FD
278
302
325
345
380
410
440
475
505
540
570
605
635
675
700
730
760
D
174
190
205
217
238
255
273
295
310
330
350
370
385
410
420
440
460
LS
125
135
145
155
170
185
195
210
230
240
250
265
280
300
315
330
350
BSE
Standard
219
235
254
270
297
321
335
359
394
416
451
475
521
559
595
613
643
PW
21
24
26
28
32
33
36
38
42
46
52
53
61
65
69
71
73
S
177
186
202
214
233
254
262
283
310
324
348
368
399
428
458
471
497
OAL
469
505
544
580
637
690
725
779
854
896
951
1,005
1,081
1,159
1,225
1,273
1,343
Weight 5
kg
59
77
92
112
150
195
230
295
374
454
535
617
728
875
1,021
1,130
1,310
AXIAL6
Misalig.
±∆Ka
mm
3.70
4.00
4.30
4.60
5.00
5.40
5.80
6.30
6.70
7.20
7.60
7.80
8.20
8.40
8.90
9.20
9.60
Weight 5
lbs
130
169
202
246
330
429
506
649
823
999
1,177
1,357
1,602
1,925
2,246
2,486
2,882
AXIAL6
Misalig.
±∆Ka
inch
0.146
0.157
0.169
0.181
0.197
0.213
0.228
0.248
0.264
0.283
0.299
0.307
0.323
0.331
0.350
0.362
0.378
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
NOM.
TORQ.
in-lbs
x103
117.0
265.5
327.5
407.1
558
761
974
1,221
1,549
1,947
2,292
2,788
3,390
4,018
4,673
5,381
6,196
PEAK
TORQ.
in-lbs
x103
354
531
655
814
1,115
1,522
1,947
2,443
3,098
3,894
4,585
5,576
6,780
8,037
9,347
10,763
12,391
MAX1
SPEED
UNBAL.
r.p.m.
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1,440
1,360
1,280
1,240
1,160
1,120
1,080
1,040
MAX2
SPEED
BAL.
r.p.m.
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
3,600
3,400
3,200
3,100
2,900
2,800
2,700
2,600
DIMENSIONS (in)
MAX
BORE
4.88
5.38
5.75
6.13
6.63
7.13
7.69
8.25
8.88
9.25
9.88
10.44
10.88
11.50
11.81
12.44
13.00
FD
10.95
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
21.26
22.44
23.82
25.00
26.58
27.56
28.74
29.92
D
6.85
7.48
8.07
8.55
9.37
10.04
10.75
11.62
12.20
12.99
13.78
14.57
15.16
16.14
16.54
17.32
18.11
LS
4.92
5.32
5.71
6.10
6.70
7.28
7.68
8.27
9.06
9.45
9.84
10.43
11.03
11.81
12.40
12.99
13.78
BSE
Standard
8.63
9.25
10.00
10.63
11.68
12.62
13.19
14.13
15.50
16.38
17.75
18.69
20.50
22.00
23.44
24.13
25.31
PW
0.835
0.961
1.024
1.110
1.260
1.307
1.433
1.504
1.654
1.811
2.031
2.094
2.394
2.567
2.709
2.803
2.866
S
6.96
7.33
7.95
8.41
9.16
10.01
10.32
11.12
12.19
12.76
13.69
14.50
15.71
16.87
18.02
18.52
19.58
OAL
18.47
19.89
21.42
22.83
25.08
27.18
28.55
30.67
33.62
35.28
37.43
39.55
42.56
45.62
48.24
50.11
52.87
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
D
Cplg.
Type
SX
Size
SX 278-8
SX 302-8
SX 325-8
SX 345-8
SX 380-8
SX 410-8
SX 440-8
SX 475-8
SX 505-8
SX 540-8
SX 570-8
SX 605-8
SX 635-8
SX 675-8
SX 700-8
SX 730-8
SX 760-8
Disc Couplings
Dimensional Data
SX-10, SXO-10 Industrial 3-piece Disc Coupling, 10-bolt
Cplg.
NOM.
Type
TORQ.
SX
Nm
Size
x103
SX 505-10 219
SX 540-10 274
SX 570-10 323
SX 605-10 394
SX 635-10 480
SX 675-10 570
SX 700-10 660
SX 730-10 760
SX 760-10 870
PEAK
TORQ.
Nm
x103
438
548
646
788
960
1,140
1,320
1,520
1,740
MAX1
SPEED
UNBAL.
r.p.m.
1,520
1,440
1,360
1,280
1,240
1,160
1,120
1,080
1,040
MAX2
SPEED
BAL.
r.p.m.
3,800
3,600
3,400
3,200
3,100
2,900
2,800
2,700
2,600
DIMENSIONS (mm)
MAX
BORE
220
235
250
265
275
290
300
315
330
FD
505
540
570
605
635
675
700
730
760
D
310
330
350
370
385
410
420
440
460
LS
230
240
250
265
280
300
315
330
350
BSE
Standard
394
416
451
475
521
559
595
610
643
PW
42
46
52
53
61
65
69
71
73
S
310
324
348
368
399
428
458
467
497
OAL
854
896
951
1,005
1,081
1,159
1,225
1,269
1,343
Weight 5
kg
378
459
540
622
734
882
1,029
1,139
1,320
AXIAL6
Misalig.
±∆Ka
mm
5.0
5.4
5.7
5.8
6.2
6.4
6.7
7.0
7.5
Weight 5
lbs
833
1,012
1,190
1,371
1,618
1,944
2,269
2,511
2,910
AXIAL6
Misalig.
±∆Ka
inch
0.197
0.213
0.224
0.228
0.244
0.252
0.264
0.276
0.295
D
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
Cplg.
NOM.
Type
TORQ.
SX
in-lbs
Size
x103
SX 505-10 1,938
SX 540-10 2,425
SX 570-10 2,859
SX 605-10 3,487
SX 635-10 4,287
SX 675-10 5,045
SX 700-10 5,842
SX 730-10 6,727
SX 760-10 7,700
PEAK
TORQ.
in-lbs
x103
3,877
4,850
5,718
6,975
8,497
10,090
11,683
13,454
15,401
MAX1
SPEED
UNBAL.
r.p.m.
1,520
1,440
1,360
1,280
1,240
1,160
1,120
1,080
1,040
MAX2
SPEED
BAL.
r.p.m.
3,800
3,600
3,400
3,200
3,100
2,900
2,800
2,700
2,600
DIMENSIONS (in)
MAX
BORE
8.75
9.25
9.88
10.44
10.88
11.50
11.81
12.44
13.00
FD
19.88
21.26
22.44
23.82
25.00
26.58
27.56
28.74
29.92
D
12.20
12.99
13.78
14.57
15.16
16.14
16.54
17.32
18.11
LS
9.06
9.45
9.84
10.43
11.03
11.81
12.40
12.99
13.78
BSE
Standard
15.50
16.38
17.75
18.69
20.50
22.00
23.44
24.00
25.31
PW
1.654
1.811
2.031
2.094
2.394
2.567
2.709
2.803
2.866
S
12.19
12.76
13.69
14.50
15.71
16.87
18.02
18.39
19.58
OAL
33.62
35.28
37.43
39.55
42.56
45.62
48.24
49.98
52.87
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
OAL
S
PW
FW
FC
LS
FD
BSE1
D
HUB
FW
SPACER
Cplg.
Type
SXC
Size
SXC 110-6
SXC 132-6
SXC 158-6
SXC 185-6
SXC 202-6
SXC 228-6
SXC 255-6
SXC 278-6
SXC 302-6
SXC 325-6
SXC 345-6
SXC 380-6
SXC 410-6
SXC 440-6
SXC 475-6
SXC 505-6
NOM.
TORQ.
Nm
x103
0.6
1.1
2.0
3.3
4.6
7.0
10.2
14.2
20.0
25.0
31.0
42.3
57.1
73.5
92.0
117.0
PEAK
TORQ.
Nm
x103
1.2
2.2
4.0
6.6
9.2
14.0
20.4
28.4
40.0
50.0
62.0
84.6
114.2
147.0
184.0
234.0
MAX
SPEED
UNBAL.
r.p.m.
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1
MAX
SPEED
BAL.
r.p.m.
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
2
MAX
BORE
mm
29
50
60
68
75
85
95
105
115
125
130
145
160
165
180
195
Weight5
kg
1.8
3.8
5.8
10
15
21
27
36
46
55
70
92
116
136
172
225
AXIAL6
Misalig.
±∆Ka
mm
2.1
2.6
3.1
3.7
3.8
4.2
4.7
5.2
5.7
6.5
6.9
7.6
8.2
8.8
9.5
10.1
Charts are continued on next page.
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
NOM.
TORQ.
in-lbs
x103
5.1
9.7
17.7
29.2
40.7
62.0
90.3
125.7
177.0
221.3
274.4
374.4
505.4
650.5
814.3
1,036
PEAK
TORQ.
in-lbs
x103
10.2
19.5
35.4
58.4
81.4
123.9
180.6
251.4
354.0
442.6
548.8
748.8
1,011
1,301
1,629
2,071
MAX1
SPEED
UNBAL.
r.p.m.
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL.
r.p.m.
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
MAX
BORE
inch
1.14
2.06
2.38
2.68
3.06
3.44
3.88
4.25
4.63
4.88
5.25
5.75
6.25
6.50
7.06
7.75
Weight5
lbs
4
8
13
22
33
46
60
79
101
121
154
203
256
300
379
503
AXIAL6
Misalig.
±∆Ka
inch
0.083
0.102
0.122
0.146
0.150
0.165
0.185
0.205
0.224
0.256
0.272
0.299
0.323
0.346
0.374
0.398
D
Cplg.
Type
SXC
Size
SXC 110-6
SXC 132-6
SXC 158-6
SXC 185-6
SXC 202-6
SXC 228-6
SXC 255-6
SXC 278-6
SXC 302-6
SXC 325-6
SXC 345-6
SXC 380-6
SXC 410-6
SXC 440-6
SXC 475-6
SXC 505-6
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-13
Disc Couplings
Dimensional Data
SXC-6 Close Coupled Industrial Style Disc Coupling, 6-bolt
OAL
S
PW
FW
FC
FD
BSE1
LS
D
HUB
FW
SPACER
Cplg.
Type
SXC
Size
SXC 110-6
SXC 132-6
SXC 158-6
SXC 185-6
SXC 202-6
SXC 228-6
SXC 255-6
SXC 278-6
SXC 302-6
SXC 325-6
SXC 345-6
SXC 380-6
SXC 410-6
SXC 440-6
SXC 475-6
SXC 505-6
DIMENSIONS (mm)
FD
110
132
158
185
202
228
255
278
302
325
345
380
410
440
475
505
D
54
71
84
95
110
123
138
152
165
174
186
204
223
233
252
276
LS
50
60
70
80
90
100
115
125
135
145
155
170
185
195
210
230
BSE
Standard
4
4
4
4
7
7
7
9
9
8
8
10
11
14
11
11
BSE
1 Rev. Hub
47
56
64
72
83
91
102
114
122
131
139
153
166
176
185
203
PW
8
8
11
14
16
18
21
21
24
26
28
32
33
36
38
42
HH
6
6
7
8
9
10
13
13
14
14
15
17
19
21
23
25
FW
8
8
10
12
14
16
20
20
22
22
24
27
30
33
36
39
FC
45
45
55
65
75
85
100
105
115
115
125
140
150
165
180
195
S
72
91
102
112
128
140
156
177
186
202
214
233
254
262
283
310
OAL
116
135
158
180
205
227
263
285
307
326
348
385
419
446
477
522
OAL1
1 Rev. Hub
152
181
211
240
272
301
345
377
406
435
464
511
554
587
628
688
OAL
4.56
5.31
6.22
7.07
8.06
8.93
10.35
11.23
12.08
12.83
13.70
15.14
16.48
17.56
18.78
20.54
OAL1
1 Rev. Hub
6.00
7.14
8.31
9.44
10.70
11.84
13.58
14.85
15.99
17.13
18.27
20.11
21.83
23.12
24.72
27.08
D
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
Cplg.
Type
SXC
Size
SXC 110-6
SXC 132-6
SXC 158-6
SXC 185-6
SXC 202-6
SXC 228-6
SXC 255-6
SXC 278-6
SXC 302-6
SXC 325-6
SXC 345-6
SXC 380-6
SXC 410-6
SXC 440-6
SXC 475-6
SXC 505-6
DIMENSIONS (in)
FD
4.33
5.20
6.22
7.28
7.95
8.98
10.04
10.95
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
D
2.13
2.79
3.31
3.74
4.33
4.84
5.43
5.99
6.50
6.85
7.32
8.03
8.78
9.17
9.92
10.87
LS
1.97
2.36
2.76
3.15
3.54
3.94
4.53
4.92
5.32
5.71
6.10
6.70
7.28
7.68
8.27
9.06
BSE
Standard
0.16
0.16
0.16
0.16
0.27
0.26
0.26
0.36
0.34
0.31
0.32
0.41
0.42
0.55
0.42
0.45
BSE
1 Rev. Hub
1.84
2.21
2.52
2.82
3.26
3.57
4.01
4.50
4.80
5.16
5.47
6.04
6.52
6.93
7.28
7.98
PW
0.33
0.33
0.44
0.55
0.61
0.69
0.81
0.84
0.96
1.02
1.11
1.26
1.31
1.43
1.50
1.65
HH
0.22
0.22
0.28
0.31
0.35
0.39
0.51
0.51
0.55
0.55
0.59
0.67
0.75
0.83
0.91
0.98
FW
0.31
0.31
0.39
0.47
0.55
0.63
0.79
0.79
0.87
0.87
0.94
1.06
1.18
1.30
1.42
1.54
FC
1.77
1.77
2.17
2.56
2.95
3.35
3.94
4.13
4.53
4.53
4.92
5.51
5.91
6.50
7.09
7.68
S
2.84
3.59
4.00
4.40
5.03
5.50
6.14
6.96
7.33
7.95
8.41
9.16
10.01
10.32
11.12
12.19
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
OAL
S
PW
FW
FC
LS
FD
BSE1
D
HUB
FW
SPACER
Cplg.
Type
SXC
Size
SXC 278-8
SXC 302-8
SXC 325-8
SXC 345-8
SXC 380-8
SXC 410-8
SXC 440-8
SXC 475-8
SXC 505-8
SXC 540-8
SXC 570-8
SXC 605-8
SXC 635-8
SXC 675-8
SXC 700-8
SXC 730-8
SXC 760-8
NOM.
TORQ.
kNm
x103
20
30
37
46
63
86
110
138
175
220
259
315
383
454
528
608
700
PEAK
TORQ.
kNm
x103
40.0
60.0
74.0
92.0
126.0
172.0
220.0
276.0
350.0
440.0
518.0
630.0
766.0
908.0
1,056
1,216
1,400
MAX
SPEED
UNBAL.
r.p.m.
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1,440
1,360
1,280
1,240
1,160
1,120
1,080
1,040
1
MAX
SPEED
BAL.
r.p.m.
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
3,600
3,400
3,200
3,100
2,900
2,800
2,700
2,600
2
MAX
BORE
mm
100
110
115
125
140
150
160
170
190
195
205
215
230
250
260
265
280
Weight5
kg
36
45
51
64
84
109
130
164
212
265
311
353
406
458
556
613
698
AXIAL6
Misalig.
±∆Ka
mm
3.7
4.0
4.3
4.6
5.0
5.4
5.8
6.3
6.7
7.2
7.6
7.8
8.2
8.4
8.9
9.2
9.6
Charts are continued on next page.
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
NOM.
TORQ.
in-lbs
x103
117.0
265.5
327.5
407.1
558
761
974
1,221
1,549
1,947
2,292
2,788
3,390
4,018
4,673
5,381
6,196
PEAK
TORQ.
in-lbs
x103
354
531
655
814
1,115
1,522
1,947
2,443
3,098
3,894
4,585
5,576
6,780
8,037
9,347
10,763
12,391
MAX1
SPEED
UNBAL.
r.p.m.
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1,440
1,360
1,280
1,240
1,160
1,120
1,080
1,040
MAX2
SPEED
BAL.
r.p.m.
7,000
6,400
6,000
5,500
5,100
4,700
4,350
4,200
3,800
3,600
3,400
3,200
3,100
2,900
2,800
2,700
2,600
MAX
BORE
inch
4.06
4.44
4.69
5.00
5.50
6.06
6.31
6.88
7.50
7.81
8.06
8.56
9.06
9.88
10.25
10.50
11.13
Weight5
lbs
79
99
112
141
185
240
287
362
467
584
686
778
895
1010
1226
1351
1539
AXIAL6
Misalig.
±∆Ka
inch
0.146
0.157
0.169
0.181
0.197
0.213
0.228
0.248
0.264
0.283
0.299
0.307
0.323
0.331
0.350
0.362
0.378
D
Cplg.
Type
SXC
Size
SXC 278-8
SXC 302-8
SXC 325-8
SXC 345-8
SXC 380-8
SXC 410-8
SXC 440-8
SXC 475-8
SXC 505-8
SXC 540-8
SXC 570-8
SXC 605-8
SXC 635-8
SXC 675-8
SXC 700-8
SXC 730-8
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-15
Disc Couplings
Dimensional Data
SXC-8 Close Coupled Industrial Style Disc Coupling, 8-bolt
OAL
S
PW
FW
FC
FD
BSE1
LS
D
HUB
FW
SPACER
Cplg.
Type
SXC
Size
SXC 278-8
SXC 302-8
SXC 325-8
SXC 345-8
SXC 380-8
SXC 410-8
SXC 440-8
SXC 475-8
SXC 505-8
SXC 540-8
SXC 570-8
SXC 605-8
SXC 635-8
SXC 675-8
SXC 700-8
SXC 730-8
SXC 760-8
DIMENSIONS (mm)
FD
278
302
325
345
380
410
440
475
505
540
570
605
635
675
700
730
760
D
142
153
166
178
196
215
225
244
254
278
288
306
322
350
365
375
395
LS
125
135
145
155
170
185
195
210
230
240
250
265
280
300
315
330
350
BSE
Standard
9
9
8
8
10
11
11
11
11
20
41
41
64
71
85
73
71
BSE
1 Rev. Hub
114
122
131
139
153
166
173
185
203
218
246
258
293
315
340
343
357
PW
21
24
26
28
32
33
36
38
42
46
52
53
61
65
69
71
73
HH
13
14
14
15
17
19
21
23
25
26
28
30
33
35
38
38
40
FW
20
22
22
24
27
30
33
36
39
42
45
48
52
56
60
60
64
FC
105
115
115
125
140
150
165
180
195
210
230
240
265
280
300
305
320
S
177
186
202
214
233
254
262
283
310
324
348
368
399
428
458
471
851
OAL
285
307
326
348
385
419
443
477
522
552
597
631
691
741
791
809
851
OAL1
1 Rev. Hub
377
406
435
464
511
554
584
628
688
724
774
818
886
950
1,008
1,041
1,097
FW
0.79
0.87
0.87
0.94
1.06
1.18
1.30
1.42
1.54
1.65
1.77
1.89
2.05
2.20
2.36
2.36
2.52
FC
4.13
4.53
4.53
4.92
5.51
5.91
6.50
7.09
7.68
8.27
9.06
9.45
10.43
11.02
11.81
12.01
12.60
S
6.96
7.33
7.95
8.41
9.16
10.01
10.32
11.12
12.19
12.76
13.69
14.50
15.71
16.87
18.02
18.52
19.58
OAL
11.23
12.08
12.83
13.70
15.14
16.48
17.44
18.78
20.54
21.73
23.50
24.83
27.19
29.17
31.16
31.85
33.50
OAL1
1 Rev. Hub
14.85
15.99
17.13
18.27
20.11
21.83
23.00
24.72
27.08
28.51
30.46
32.19
34.88
37.39
39.70
40.98
43.18
D
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
Cplg.
Type
SXC
Size
SXC 278-8
SXC 302-8
SXC 325-8
SXC 345-8
SXC 380-8
SXC 410-8
SXC 440-8
SXC 475-8
SXC 505-8
SXC 540-8
SXC 570-8
SXC 605-8
SXC 635-8
SXC 675-8
SXC 700-8
SXC 730-8
SXC 760-8
DIMENSIONS (in)
FD
10.95
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
21.26
22.44
23.82
25.00
26.58
27.56
28.74
29.92
D
5.59
6.02
6.53
7.00
7.71
8.46
8.86
9.61
10.00
10.94
11.34
12.05
12.68
13.78
14.37
14.76
15.55
LS
4.92
5.32
5.71
6.10
6.70
7.28
7.68
8.27
9.06
9.45
9.84
10.43
11.03
11.81
12.40
12.99
13.78
BSE
Standard
0.36
0.34
0.31
0.32
0.41
0.42
0.43
0.42
0.45
0.79
1.61
1.61
2.53
2.79
3.36
2.87
2.79
BSE
1 Rev. Hub
4.50
4.80
5.16
5.47
6.04
6.52
6.81
7.28
7.98
8.58
9.68
10.15
11.52
12.39
13.40
13.50
14.05
PW
0.83
0.96
1.02
1.11
1.26
1.31
1.43
1.50
1.65
1.81
2.03
2.09
2.39
2.57
2.71
2.80
2.87
HH
0.51
0.55
0.55
0.59
0.67
0.75
0.83
0.91
0.98
1.02
1.10
1.18
1.30
1.38
1.50
1.50
1.57
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
OAL
AXIAL SPLIT
BSE
PW
FD
D
OD
HUB
MOUNT BOLTS
DISC PACK KIT
SPLIT SPACER
Cplg.
NOM.
Type
TORQ.
SXCS
kNm
Size
x103
SXCS 110-6
0.6
SXCS 132-6
1.1
SXCS 158-6
2.0
SXCS 185-6
3.3
SXCS 202-6
4.6
SXCS 228-6
7.0
SXCS 255-6 10.2
SXCS 278-6 14.2
SXCS 302-6 20.0
PEAK
TORQ.
kNm
x103
1.2
2.2
4.0
6.6
9.2
14.0
20.4
28.4
40.0
MAX1
SPEED
UNBAL.
r.p.m.
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
MAX2
SPEED
BAL.
r.p.m.
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
MAX
BORE
mm
29
50
60
68
75
85
95
105
115
MOUNT RING
Weight5
kg
1.8
3.8
5.8
10
15
21
27
36
46
AXIAL6
Misalig.
±∆Ka
mm
2.1
2.6
3.1
3.7
3.8
4.2
4.7
5.2
5.7
Charts are continued on next page.
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
PEAK
TORQ.
in-lbs
x103
10.2
19.5
35.4
58.4
81.4
123.9
180.6
251.4
354.0
MAX1
SPEED
UNBAL.
r.p.m.
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
MAX2
SPEED
BAL.
r.p.m.
18,000
14,600
12,300
10,500
9,600
8,500
7,700
7,000
6,400
MAX
BORE
inch
1.14
2.06
2.38
2.68
3.06
3.44
3.88
4.25
4.63
Weight5
lbs
4
8
13
22
33
46
60
79
101
AXIAL6
Misalig.
±∆Ka
inch
0.083
0.102
0.122
0.146
0.150
0.165
0.185
0.205
0.224
D
Cplg.
NOM.
Type
TORQ.
SXCS
in-lbs
Size
x103
SXCS 110-6
5.1
SXCS 132-6
9.7
SXCS 158-6 17.7
SXCS 185-6 29.2
SXCS 202-6 40.7
SXCS 228-6 62.0
SXCS 255-6 90.3
SXCS 278-6 125.7
SXCS 302-6 177.0
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
OAL
AXIAL SPLIT
BSE
PW
FD
D
OD
HUB
MOUNT BOLTS
DISC PACK KIT
SPLIT SPACER
Cplg.
Type
SXCS
Size
SXCS 110-6
SXCS 132-6
SXCS 158-6
SXCS 185-6
SXCS 202-6
SXCS 228-6
SXCS 258-6
SXCS 278-6
SXCS 302-6
MOUNT RING
Dimensions (mm)
FD
124.0
145.0
170.9
195.1
214.1
243.1
274.1
294.1
327.2
D
53.8
70.9
83.8
95.0
108.0
122.9
134.9
151.9
164.8
BSE
11.2
9.1
11.9
14.7
16.3
18.3
30.7
22.1
27.4
PW
8.4
8.4
11.2
14.0
15.5
17.5
20.5
21.2
24.4
OD
128.0
149.1
175.0
198.9
217.9
246.9
277.9
297.9
331.0
OAL
111.3
129.0
152.1
174.8
196.1
218.4
260.9
272.0
297.7
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
D
Cplg.
Type
SXCS
Size
SXCS 110-6
SXCS 132-6
SXCS 158-6
SXCS 185-6
SXCS 202-6
SXCS 228-6
SXCS 258-6
SXCS 278-6
SXCS 302-6
Dimensions (in)
FD
4.88
5.71
6.73
7.68
8.43
9.57
10.79
11.58
12.88
D
2.12
2.79
3.30
3.74
4.25
4.84
5.31
5.98
6.49
BSE
0.44
0.36
0.47
0.58
0.64
0.72
1.21
0.87
1.08
PW
0.331
0.331
0.442
0.551
0.610
0.689
0.806
0.834
0.961
OD
5.04
5.87
6.89
7.83
8.58
9.72
10.94
11.73
13.03
OAL
4.38
5.08
5.99
6.88
7.72
8.60
10.27
10.71
11.72
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.
Type
DI
Size
DI 090-6
DI 110-6
DI 132-6
DI 158-6
DI 185-6
DI 202-6
DI 228-6
DI 255-6
DI 278-6
DI 302-6
DI 325-6
DI 345-6
DI 380-6
DI 410-6
DI 440-6
DI 475-6
DI 505-6
NOM.
TORQ.
Nm
x103
0.2
0.6
1.1
2.0
3.3
4.6
7.0
10.2
14.2
20.0
25.0
31.0
42.3
57.1
73.5
92.0
117.0
PEAK
TORQ.
Nm
x103
0.5
1.2
2.2
4.0
6.6
9.2
14.0
20.4
28.4
40.0
50.0
62.0
84.6
114.2
147.0
184.0
234.0
MAX1
SPEED
UNBAL.
r.p.m.
9,100
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL. MAX BORE MAX BORE
r.p.m.
Standard
Jumbo
22,700
43
59
18,000
52
75
14,600
67
90
12,300
80
105
10,500
95
125
9,600
102
135
8,500
115
150
7,700
125
170
7,000
140
185
6,400
155
200
6,000
170
215
5,500
180
230
5,100
210
250
4,700
225
270
4,350
235
290
4,200
250
312
3,800
275
332
Weight5
kg
4
5.4
10
18
28
38
55
72
101
133
160
193
262
335
397
505
631
AXIAL6
Misalig.
±∆Ka
mm
1.5
2.1
2.6
3.1
3.7
3.8
4.2
4.7
5.2
5.7
6.5
6.9
7.6
8.2
8.8
9.5
10.1
Weight5
lbs
8
12
22
40
62
84
121
159
223
293
353
425
578
739
875
1,113
1,391
AXIAL6
Misalig.
±∆Ka
inch
0.059
0.083
0.102
0.122
0.146
0.150
0.165
0.185
0.205
0.224
0.256
0.272
0.299
0.323
0.346
0.374
0.398
DIMENSIONS (mm)
SD
90
110
132
158
185
202
228
255
278
302
325
345
380
410
440
475
505
FD
94
115
139
165
193
210
236
263
286
310
333
355
390
420
450
485
515
D
60
73
95
112
134
144
160
175
195
217
240
255
295
315
330
355
385
LP
33
50
60
70
80
90
100
115
125
135
145
155
170
185
195
210
230
S
43
61
64
79
88
105
114
140
143
156
158
182
190
206
231
252
275
HH
13
13
13
17
19
22
24
27
30
32
32
30
32
36
41
46
46
BSE
79
108
111
140
160
186
205
251
256
281
286
321
346
375
416
451
490
OAL
155
208
231
280
320
366
405
481
505
551
576
631
686
744
806
871
951
Metric dimensions are rounded to the nearest “mm” except where otherwise shown
NOM.
TORQ.
in-lbs
x103
2.1
5.1
9.7
17.7
29.2
40.7
62.0
90.3
125.7
177.0
221.3
274.4
374.4
505
651
814
1,036
PEAK
TORQ.
in-lbs
x103
4.2
10.2
19.5
35.4
58.4
81.4
123.9
180.6
251.4
354.0
442.6
549
749
1,011
1,301
1,629
2,071
MAX1
SPEED
UNBAL.
r.p.m.
9,100
7,200
5,840
4,920
4,200
3,840
3,400
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
MAX2
SPEED
BAL. MAX BORE MAX BORE
r.p.m.
Standard
Jumbo
22,700
1.68
2.25
18,000
2.06
2.94
14,600
2.69
3.56
12,300
3.13
4.13
10,500
3.75
4.94
9,600
4.06
5.38
8,500
4.50
5.94
7,700
4.94
6.63
7,000
5.50
7.31
6,400
6.13
7.88
6,000
6.75
8.44
5,500
7.13
9.13
5,100
8.31
9.88
4,700
8.88
10.63
4,350
9.25
11.44
4,200
9.94
12.25
3,800
10.88
13.13
DIMENSIONS (in)
SD
3.54
4.33
5.20
6.22
7.28
7.95
8.98
10.04
10.94
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
FD
3.70
4.53
5.47
6.50
7.60
8.27
9.29
10.35
11.26
12.20
13.11
13.98
15.35
16.54
17.72
19.09
20.28
D
2.36
2.87
3.74
4.41
5.28
5.67
6.30
6.89
7.68
8.54
9.45
10.04
11.61
12.40
12.99
13.98
15.16
LP
1.30
1.97
2.36
2.76
3.15
3.54
3.94
4.53
4.92
5.31
5.71
6.10
6.69
7.28
7.68
8.27
9.06
S
1.68
2.41
2.54
3.12
3.48
4.12
4.48
5.51
5.63
6.15
6.21
7.18
7.49
8.12
9.10
9.94
10.81
HH
0.51
0.51
0.51
0.67
0.75
0.87
0.94
1.06
1.18
1.26
1.26
1.18
1.26
1.42
1.61
1.81
1.81
BSE
3.11
4.25
4.38
5.50
6.31
7.31
8.06
9.88
10.06
11.06
11.25
12.63
13.63
14.75
16.38
17.75
19.31
OAL
6.10
8.19
9.10
11.02
12.61
14.39
15.94
18.94
19.90
21.68
22.67
24.83
27.01
29.31
31.74
34.29
37.43
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
D
Cplg.
Type
DI
Size
DI 090-6
DI 110-6
DI 132-6
DI 158-6
DI 185-6
DI 202-6
DI 228-6
DI 255-6
DI 278-6
DI 302-6
DI 325-6
DI 345-6
DI 380-6
DI 410-6
DI 440-6
DI 475-6
DI 505-6
Disc Couplings
Dimensional Data
DI-8 Drop in (API) Style 5-piece Disc Coupling, 8-bolt
OAL
LS
LS
BSE
FD
SD
JD
D
STANDARD
HUB
SPACER
Cplg.
Type
DI
Size
DI 278-8
DI 302-8
DI 325-8
DI 345-8
DI 380-8
DI 410-8
DI 440-8
DI 475-8
DI 505-8
DI 540-8
DI 570-8
DI 605-8
NOM.
TORQ.
Nm
x103
20.0
30.0
37.0
46.0
63.0
86.0
110.0
138.0
175.0
220.0
259.0
315.0
PEAK
TORQ.
Nm
x103
40.0
60.0
74.0
92.0
126.0
172.0
220.0
276.0
350.0
440.0
518
630
MAX1
SPEED
UNBAL.
r.p.m.
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1,440
1,360
1,280
MAX2
SPEED
BAL. MAX BORE MAX BORE
r.p.m.
Standard
Jumbo
7,000
140
185
6,400
155
200
6,000
170
215
5,500
180
230
5,100
210
255
4,700
225
275
4,350
235
300
4,200
250
320
3,800
275
341
3,600
295
360
3,400
320
385
3,200
325
400
JUMBO
HUB
GUARD
RING
Weight5
kg
130
164
213
250
325
412
480
632
794
840
950
1,120
AXIAL6
Misalig.
±∆Ka
mm
3.7
4.0
4.3
4.6
5.0
5.4
5.8
6.3
6.7
7.2
7.6
7.8
Weight5
lbs
287
362
470
551
717
908
1,058
1,393
1,750
1,852
2,094
2,469
AXIAL6
Misalig.
±∆Ka
inch
0.146
0.157
0.169
0.181
0.197
0.213
0.228
0.248
0.264
0.283
0.299
0.307
DIMENSIONS (mm)
SD
278
302
325
345
380
410
440
475
505
540
570
605
FD
332
356
400
417
455
498
528
585
615
670
702
727
D
195
217
240
255
295
315
330
355
385
415
450
460
JD
260
285
305
322
360
390
420
450
480
508
540
565
LS
125
135
145
155
170
185
195
210
230
240
250
265
BSE
256
281
286
321
346
375
416
450
490
560
607
621
OAL
505
551
576
631
686
744
806
870
951
1,040
1,106
1,151
D
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
Cplg.
Type
DI
Size
DI 278-8
DI 302-8
DI 325-8
DI 345-8
DI 380-8
DI 410-8
DI 440-8
DI 475-8
DI 505-8
DI 540-8
DI 570-8
DI 605-8
NOM.
TORQ.
in-lbs
x103
177.0
265.5
327.5
407.1
558
761
974
1,221
1,549
1,947
2,292
2,788
PEAK
TORQ.
in-lbs
x103
354.0
531
655
814
1,115
1,522
1,947
2,443
3,098
3,894
4,585
5,576
MAX1
SPEED
UNBAL.
r.p.m.
2,800
2,560
2,400
2,200
2,040
1,880
1,740
1,680
1,520
1,440
1,360
1,280
MAX2
SPEED
BAL. MAX BORE MAX BORE
r.p.m.
Standard
Jumbo
7,000
5.50
7.31
6,400
6.13
7.88
6,000
6.75
8.50
5,500
7.13
9.06
5,100
8.31
10.13
4,700
8.88
10.94
4,350
9.25
11.88
4,200
9.94
12.63
3,800
10.88
13.44
3,600
11.63
14.25
3,400
12.63
15.25
3,200
12.88
15.94
DIMENSIONS (in)
SD
10.95
11.89
12.80
13.58
14.96
16.14
17.32
18.70
19.88
21.26
22.44
23.82
FD
13.07
14.02
15.75
16.42
17.91
19.60
20.79
23.03
24.21
26.38
27.64
28.62
D
7.68
8.54
9.45
10.04
11.61
12.40
12.99
13.98
15.16
16.34
17.72
18.11
JD
LS
10.24 4.92
11.22 5.32
12.00 5.71
12.68 6.10
14.17 6.69
15.35 7.28
16.54 7.68
17.72 8.27
18.90 9.06
20.00 9.45
21.26 9.84
22.24 10.43
BSE
10.06
11.06
11.25
12.63
13.63
14.75
16.38
17.72
19.31
22.06
23.88
24.44
OAL
19.90
21.70
22.67
24.83
27.01
29.31
31.74
34.26
37.43
40.96
43.56
45.30
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.
Type
SX
Size
SXGS 132-6 / 1
SXGS 158-6 / 1.5
SXGS 185-6 / 2
SXGS 202-6 / 2.5
SXGS 255-6 / 3
SXGS 287-8 / 3.5
SXGS 302-8 / 4
SXGS 325-8 / 4.5
SXGS 345-8 / 5
SXGS 380-8 / 5.5
SXGS 410-8 / 6
SXGS 540-8 / 7
NOM.
TORQ.
Nm
x103
1.1
2.0
3.3
4.6
10.2
20.0
30.0
37.0
46.0
63.0
86.0
110.0
PEAK
TORQ.
Nm
x103
2.2
4.0
6.6
9.2
20.4
40.0
60.0
74.0
92.0
126.0
172.0
220.0
MAX1
SPEED
UNBAL.
r.p.m.
5,840
4,920
4,200
3,480
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,440
MAX2
SPEED
BAL.
r.p.m.
14,600
12,300
10,500
9,600
7,700
7,000
6,400
6,000
5,500
5,100
4,700
3,600
DIMENSIONS (mm)
MAX
BORE
50
60
70
75
95
100
110
115
125
140
150
195
FD
132
158
185
202
255
278
302
325
345
380
410
540
SD
116
152
178
213
240
279
318
346
389
425
457
527
CH
66
81
96
110
130
150
160
165
185
200
200
235
LS
60
70
80
90
115
125
135
145
155
170
185
240
BSE
MIN
97
132
147
175
165
225
225
215
280
280
210
190
S
MIN
85
110
115
135
135
175
175
175
220
220
180
180
Weight 5
kg
8
16
24
38
57
91
118
134
196
245
245
508
AXIAL6
Misalig.
±∆Ka
mm
2.6
3.1
3.7
3.8
4.7
3.7
4.0
4.3
4.6
5.0
5.4
7.2
Weight 5
lbs
17
35
53
84
126
201
260
295
432
540
560
1,120
AXIAL6
Misalig.
±∆Ka
in
0.102
0.122
0.146
0.150
0.185
0.146
0.157
0.169
0.181
0.197
0.213
0.283
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
NOM.
TORQ.
in-lbs
x103
9.7
17.7
29.2
40.7
90.3
177.0
265.5
327.5
407.1
558
761
1,947
PEAK
TORQ.
in-lbs
x103
19.5
35.4
58.4
81.4
180.6
354
531
655
814
1,115
1,522
3,894
MAX1
SPEED
UNBAL.
r.p.m.
5,840
4,920
4,200
3,840
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,440
MAX2
SPEED
BAL.
r.p.m.
14,600
12,300
10,500
9,600
7,700
7,000
6,400
6,000
5,500
5,100
4,700
3,600
DIMENSIONS (in)
MAX
BORE
2.06
2.38
2.75
3.06
3.88
4.06
4.44
4.68
5.00
5.50
6.06
7.75
FD
5.20
6.22
7.28
7.95
10.04
10.95
11.89
12.80
13.58
14.96
16.14
21.26
SD
4.56
6.00
7.00
8.38
9.44
11.00
12.50
13.63
15.31
16.75
18.00
20.75
CH
2.60
3.19
3.78
4.33
5.12
5.90
6.30
6.50
7.28
7.87
7.87
9.25
LS
2.36
2.76
3.15
3.54
4.53
4.92
5.32
5.71
6.10
6.69
7.28
9.45
BSE
MIN
3.82
5.20
5.79
6.89
6.50
8.86
8.86
8.46
11.02
11.02
8.27
7.48
S
MIN
3.35
4.33
4.53
5.31
5.31
6.89
6.89
6.89
8.66
8.66
7.09
7.09
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
D
Cplg.
Type
SX
Size
SXGS 132-6 / 1
SXGS 158-6 / 1.5
SXGS 185-6 / 2
SXGS 202-6 / 2.5
SXGS 255-6 / 3
SXGS 287-8 / 3.5
SXGS 302-8 / 4
SXGS 325-8 / 4.5
SXGS 345-8 / 5
SXGS 380-8 / 5.5
SXGS 410-8 / 6
SXGS 540-8 / 7
Disc Couplings
Dimensional Data
Replacement for Floating Shaft Gear Coupling Drop-In Style
S
RD
FD
FD
D
SE
P
RD
P
DIR
DILR
Cplg.
Type
SX
Size
DIR 132-6 / 1
DIR 158-6 / 1.5
DIR 185-6 / 2
DIR 202-6 / 2.5
DIR 255-6 / 3
DIR 287-8 / 3.5
DIR 302-8 / 4
DIR 325-8 / 4.5
DIR 345-8 / 5
DIR 380-8 / 5.5
DIR 410-8 / 6
DIR 540-8 / 7
NOM.
TORQ.
Nm
x103
1.1
2.0
3.3
4.6
10.2
20.0
30.0
37.0
46.0
63.0
86.0
110.0
PEAK
TORQ.
Nm
x103
2.2
4.0
6.6
9.2
20.4
40.0
60.0
74.0
92.0
126.0
172.0
220.0
MAX1
SPEED
UNBAL.
r.p.m.
5,840
4,920
4,200
3,480
3,080
2,800
2,560
2,400
2,200
2,040
1,880
1,440
MAX2
SPEED
BAL.
r.p.m.
14,600
12,300
10,500
9,600
7,700
7,000
6,400
6,000
5,500
5,100
4,700
3,600
DIMENSIONS (mm)
MAX BORE
STD. KEY
56
76
95
114
134
150
176
202
231
260
288
318
FD
132
158
185
202
255
278
302
325
345
380
410
540
RD
116
152
178
213
240
279
318
346
389
425
457
527
D
78
101
125
150
176
201
235
264
294
325
356
400
LP
40
47
58
74
86
101
113
128
145
156
188
221
LS
42
48
60
73
84
97
108
122
140
152
170
187
BSE
MIN
170
225
265
300
365
405
440
455
500
545
555
680
Weight 5
kg
5
11
17
24
42
67
86
102
139
179
199
419
AXIAL6
Misalig.
±∆Ka
mm
2.6
3.1
3.7
3.8
4.7
3.7
4.0
4.3
4.6
5.0
5.4
7.2
Weight 5
lb
11
24
37
53
93
148
190
225
306
395
439
924
AXIAL6
Misalig.
±∆Ka
inch
0.102
0.122
0.146
0.150
0.185
0.146
0.157
0.169
0.181
0.197
0.213
0.283
D
Metric dimensions are rounded to the nearest “mm” except where otherwise shown.
Cplg.
Type
SX
Size
DIR 132-6 / 1
DIR 158-6 / 1.5
DIR 185-6 / 2
DIR 202-6 / 2.5
DIR 255-6 / 3
DIR 287-8 / 3.5
DIR 302-8 / 4
DIR 325-8 / 4.5
DIR 345-8 / 5
DIR 380-8 / 5.5
DIR 410-8 / 6
DIR 540-8 / 7
NOM.
TORQ.
in-lbs
x103
9.7
17.7
29.2
40.7
90.3
177.0
265.5
327.5
407.1
558
761
1,947
PEAK
TORQ.
in-lbs
x103
19.5
35.4
58.4
81.4
180.6
354
531
655
814
1,115
1,522
3,894
MAX2
SPEED
BAL.
r.p.m.
14,600
12,300
10,500
9,600
7,700
7,000
6,400
6,000
5,500
5,100
4,700
3,600
DIMENSIONS (in)
MAX. BORE MAX BORE
STD. KEY
RED. KEY
2.13
2.25
2.81
3.06
3.50
3.75
4.25
4.50
4.88
5.25
5.63
5.88
6.50
6.50
7.38
7.63
8.38
8.75
9.25
9.75
11.13
10.75
11.25
12.00
FD
5.20
6.22
7.28
7.95
10.04
10.95
11.89
12.80
13.58
14.96
16.14
21.26
RD
4.56
6.00
7.00
8.38
9.44
11.00
12.50
13.63
15.31
16.75
18.00
20.75
D
3.06
3.97
4.91
5.91
6.91
7.91
9.25
10.38
11.56
12.81
14.00
15.75
LP
1.56
1.84
2.28
2.90
3.40
3.96
4.43
5.03
5.69
6.15
7.41
8.69
LS
1.66
1.88
2.38
2.88
3.31
3.81
4.25
4.81
5.50
6.00
6.69
7.38
BSE
MIN
6.69
8.86
10.43
11.81
14.37
15.94
17.32
17.91
19.69
21.46
21.85
26.77
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
(Single disc pack)
SXAC Type
(with clamping element)
D
SXFS Type
(With floating shaft)
SXV Type
(For vertical mounting)
SXCS Type (over size 302)
(Spacer in 2 halves)
SXCAC Type
(With internal clamping element)
D-23
Disc Couplings
SXFA Type
(With flanged adaptors)
D
SXSP Type
(With shear pins)
SXHP Type
(High performance)
D-24
Dimensional Data
SXEI Type
(With electrical insulation)
SXLEF Type
(Limited end float)
Disc Couplings
Technical Data
Engineering Section/Bore and Keyway Standards
Inch Bore Standards to AGMA 9002-A96
Shaft Diameter inches
Nominal Shaft
Over
Thru
—
1.5000
1.5000
3.0000
3.0000
4.0000
4.0000
5.0000
5.0000
7.0000
7.0000
8.0000
8.0000
9.0000
Shaft Diameter mm
Diam. Less
0.001
0.002
0.003
0.0035
0.004
0.005
0.0055
Bore Tolerance
+0.0005 -0.000
+0.0010 -0.000
+0.0015 -0.000
+0.0015 -0.000
+0.0015 -0.000
+0.002 -0.000
+0.002 -0.000
Keyway Standards for Inch Bores
Nominal Keyway inches
Square (up to 6.5000
inches), rectangular
over
Width
Depth
0.1250
0.0625
0.1875
0.0937
0.2500
0.1250
0.3125
0.1562
0.3750
0.1875
0.3750
0.1875
0.5000
0.2500
0.5000
0.2500
0.6250
0.3125
0.7500
0.3750
0.7500
0.3750
0.8750
0.4375
1.0000
0.5000
1.0000
0.5000
1.2500
0.6250
1.2500
0.6250
1.5000
0.7500
1.7500
0.7500
1.7500
0.7500
2.0000
0.7500
2.0000
0.7500
Nominal Key inches
Width
Height
0.1250
0.1250
0.1875
0.1875
0.2500
0.2500
0.3125
0.3125
0.3750
0.3750
0.3750
0.3750
0.5000
0.5000
0.5000
0.5000
0.6250
0.6250
0.7500
0.7500
0.7500
0.7500
0.8750
0.8750
1.0000
1.0000
1.0000
1.0000
1.2500
1.2500
1.2500
1.2500
1.5000
1.5000
1.7500
1.5000
1.7500
1.5000
2.0000
1.5000
2.0000
1.5000
Over
1
3
6
10
18
30
50
80
120
180
250
315
Thru
3
6
10
18
30
50
80
120
180
250
315
400
Tolerance
H7 mm
+0.010 -0.0
+0.012 -0.0
+0.015 -0.0
+0.018 -0.0
+0.021 -0.0
+0.025 -0.0
+0.030 -0.0
+0.035 -0.0
+0.040 -0.0
+0.046 -0.0
+0.052 -0.0
+0.057 -0.0
Keyway Standards for Metric Bores JS9
Nominal Bore Diam.
mm
Over
To
6
8
8
10
10
12
12
17
17
22
22
30
30
38
38
44
44
50
50
58
58
65
65
75
75
85
85
95
95
110
110
130
130
150
150
170
170
200
200
230
230
260
260
290
290
330
330
380
380
440
Nominal Keyway mm
Width
Depth
2
1.0
3
1.4
4
1.8
5
2.3
6
2.8
8
3.3
10
3.3
12
3.3
14
3.8
16
4.3
18
4.4
20
4.9
22
5.4
25
5.4
28
6.4
32
7.4
36
8.4
40
9.4
45
10.4
50
11.4
56
12.4
63
12.4
70
14.4
80
15.4
90
17.4
Nominal Key mm
Width
Height
2
2
3
3
4
4
5
5
6
6
8
7
10
8
12
8
14
9
16
10
18
11
20
12
22
14
25
14
28
16
32
18
36
20
40
22
45
25
50
28
56
32
63
32
70
36
80
40
90
45
D
Nominal Bore
Diam. Inches
Over
To
0.4375
0.5625
0.5625
0.8750
0.8750
1.2500
1.2500
1.3750
1.3750
1.5000
1.5000
1.7500
1.7500
2.0000
2.0000
2.2500
2.2500
2.7500
2.7500
3.0000
3.0000
3.2500
3.2500
3.7500
3.7500
4.0000
4.0000
4.5000
4.5000
5.0000
5.0000
5.5000
5.5000
6.5000
6.5000
7.0000
7.0000
7.5000
7.5000
8.0000
8.0000
9.0000
Metric Bore per ISO/R775;1969 (mm) H7
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
h6
k6
m6
n6
p6
Hub tolerance
T7
R7
P7
N7
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.
D
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.
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:
(Y-Z) ≤ Coupling size / 7620
(Y-Z) ≤ Coupling size / 15420
(Y-Z) ≤ Coupling size / 17780
Disc with 6 bolts
Disc with 8 bolts
Disc with 10 bolts
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
Nm
13
30
30
60
100
150
230
450
450
ft-lbs
9.6
22
22
44
74
111
170
332
332
Size
302
325
345
380
410
440
475
505
Nm
600
600
780
1,100
1,500
2,000
2,600
3,300
ft-lbs
443
443
575
811
1,106
1,475
1,918
2,434
Size
540
570
605
635
675
700
730
760
Nm
4,100
5,100
6,200
7,600
9,900
12,200
12,200
14,800
ft-lbs
3,024
3,762
4,573
5,606
7,302
8,999
8,999
10,916
Nm
108
108
325
325
325
565
ft-lbs
80
80
240
240
240
417
D
Size
90
110
132
158
185
202
228
255
278
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
132-6/ 1
158-6/ 1.5
185-6/ 2
202-6/ 2.5
255-6/ 3
278-8/ 3.5
Nm
15
47
106
197
197
298
ft-lbs
11
35
78
145
145
220
Size
302-8/ 4
325-8/ 4.5
345-8/ 5
380-8/ 5.5
410-8/ 6
540-8/ 7
Nm
298
298
412
412
412
412
ft-lbs
220
220
304
304
304
304
Note: For lubricated threads, multiply the values by 0.8.
Hub Bolt Tightening Torque for styles DI-6 and DI-8
Size
90-6
110-6
132-8
158-6
185-6
202-6
228-6
255-8
278-6
Nm
15
35
35
69
120
190
295
580
580
ft-lbs
11
26
26
51
89
140
218
428
428
Size
302-6
325-6
345-8
380-6
410-6
440-6
475-6
505-6
Nm
780
780
580
780
1000
1500
2000
2000
ft-lbs
575
575
428
575
738
1106
1475
1475
Size
278-8
302-8
325-8
345-8
380-8
410-8
Size
475-8
505-8
540-8
570-8
605-8
Nm
660
660
760
760
760
ft-lbs
487
487
551
561
561
Note: For lubricated threads, multiply the values by 0.8.
D-27
Disc Couplings
Installation Instructions
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.
D
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