KOP-FLEX Coupling Catalog GEAR

Series H
Gear Couplings
Size 1 through 30
Most Economical
Gear Coupling Design
Large Bore Capacity, Index:

with O-ring Seal Page
HOW TO ORDER.........................................161
Technical Advantages ........................ 160 - 161
Service Factors ............................................162
Selection Procedure.....................................163
Dynamic Balancing Guide ...........................163
Full Flex Coupling .............................. 164 - 166
Fastener Data .................................... 164 - 165
Spacer Coupling ..........................................167
Flex Rigid Coupling ............................ 168 - 169
Floating Shaft Coupling ..................... 168 - 169
Mill Motor Coupling ............................ 170 - 171
Limited End Float Coupling ..........................172
Vertical Coupling ..........................................172
Slide Coupling ..............................................173
Brake Wheel Coupling .................................174
For More
Brake Disc Coupling ....................................175
Information
Alloy Steel Full Flex......................................176
Alloy Steel Spacer Coupling ........................177
Visit www.kopflex.com
159
Series H Gear Couplings
The Series H Advantages:

Higher Misalignment Capability
Sizes 1-7 compensate for up to ±1 1/2° static angular
misalignment per gear mesh.
Minimizing operating misalignment will maximize the life of
the coupling. Refer to the Installation and Alignment
Instructions for alignment recommendations.
Larger Bore Capabilities allow the most economical size
selection for shafts up to 10 5/8".
Higher Torque Ratings due to larger tooth pitch diameters
than other couplings.
Versatility in that Series H’s are interchangeable by half
coupling with competitive coupling designs.
1 1/2° Curved-Face Teeth are a prime feature of the Series
H coupling, sizes 1-7. The crowned hub teeth are a 20° full-
depth involute tooth form with flank, tip, and root curvature. Crowned Tooth Sizes 1 - 7
When used with the straight faced sleeve teeth, these 1 1/2 °
curved face hubs offer increased shaft misalignment capability.
Center Flange Bolting:
All couplings feature precision-drilled flange bolt holes, and
tight tolerance Grade 5 flange bolts to assure a long-lasting
flange to flange and fastener fit. Exposed bolt flanges are
standard. Shrouded bolt flanges can be supplied through size
5. Size #5 1/2 and larger couplings are only available with
exposed bolt flanges.
Lubrication:
Each sleeve flange is supplied with two pipe plugs 180° apart.
This permits assembly of a full flex coupling with four lube
plugs positioned every 90°, facilitating lubrication.
The lube seal is a Buna-N O-ring to help retain grease and

exclude contaminants. KHP or KSG coupling greases are
recommended in order to obtain maximum operating life.
Coupling Greases
KOP-FLEX offers greases specifically designed for use in coupling
applications. For proper lubrication and long service life, use KSG
Standard Coupling Grease, or KHP High Performance Coupling
Grease. See pages 204-206 for detailed specifications.
160
Series H couplings of Size 8 to 30 are designed for ±1/2°

misalignment per flex half coupling, to compensate for
misalignment between the shafts in a full-flex coupling.
Series H couplings can be supplied in full-flex, flex-rigid,

floating shaft and spacer arrangements as well as custom
designs. Only exposed bolt flanges are available in sizes 8 to
30.
Straight Tooth Sizes 8 - 30

The straight-faced, involute stub tooth form is used in the
Series H coupling, sizes 8 to 30. This tooth form distributes
contact pressures across the full length of the hub tooth, to
best develop the needed lubricating film, minimizing tooth wear
and extending coupling service life for years of operation.
The End Rings are removable for ease of assembly and to
allow inspection of the gear sets. A Buna-N O-ring seal is
incorporated to help exclude contaminants and retain the
lubricant. Designed for grease lubrication, our KSG or KHP
coupling greases are recommended to obtain maximum
operating life.
HOW TO ORDER
PART NUMBER EXPLANATION
Complete Rough Bore Coupling Coupling Parts
Description
Coupling Size (1 to 30)
*FHUB = Flex Hub
Coupling Style (H = Series H) *RHUB = Rigid Hub
Bolt Type (EB = Exposed Bolt) *MMHUB = Mill Motor Hub
SLEEVE = Standard Sleeve
Coupling Type (FF = Full Flex
SSLEEVE = Slide Sleeve
FR = Flex Rigid
FS = Fastener Set (w/gasket)
MMFF = Mill Motor Full Flex
ERFS = End Ring Fastener Set
SSFF = Slide Full Flex
VSFS = Vertical/Slide Fastener Set (w/gasket)
SSFR = Slide Flex Rigid)
LEFD = LEF Disk
SPRxxx = Spacer for x.xx shaft separation
SP = Stop Plate for Slide Couplings
VP = Vertical Plate
1 1/2 H EB FF
* For finish bored hubs, add FB and bore size.
All finish bores and keyways per
AGMA 9002-A86 with interference fits.
Clearance bores are available on request
with one setscrew over keyway.
For More
Information
1 1/2H FHUB FB
161
Service Factors
Values listed are intended only as a general
guide, and are typical of usual service
requirements. For systems which frequently Typical Typical
utilize the peak torque capability of the power Application Service Application Service
Factor Factor
source, verify that the magnitude of this peak GENERATORS — Pebble & Rod ........................................................... 2.0
torque does not exceed the 1.0 Service (Not Welding) ........................................................... 1.0 Pug ........................................................................... 1.75
Factor Rating of the coupling selected. HAMMER MILLS ........................................................ 2.0 Tumbling Barrels ...................................................... 2.0
LAUNDRY WASHERS — MIXERS
Applications which involve extreme repetitive Reversing ............................................................. 2.0 Concrete Mixers ....................................................... 1.75
shock or high-energy load absorption LAUNDRY TUMBLERS ............................................. 2.0 Drum Type ................................................................ 1.5
characteristics should be referred — with full LINE SHAFT .............................................................. 1.5 OIL INDUSTRY
LUMBER INDUSTRY Chillers ..................................................................... 1.25
particulars — to KOP-FLEX. Barkers — Drum Type ............................................. 2.0 Paraffin Filter Press ................................................. 1.75
Edger Feed .............................................................. 2.0 PAPER MILLS
Values contained in the table are to be Live Rolls ................................................................. 2.0 Barker Auxiliaries, Hydraulic .................................... 2.0
applied to smooth power sources such as Log Haul — Incline .................................................. 2.0 Barker, Mechanical .................................................. 2.0
Log Haul — Well type .............................................. 2.0 Barking Drum Spur Gear Only ................................ 2.25
electric motors and steam turbines. For drives Off Bearing Rolls ...................................................... 2.0 Beater & Pulper ....................................................... 1.75
involving internal combustion engines of four Planer Feed Chains ................................................. 1.75 Bleacher ................................................................... 1.0
or five cylinders, add 1.0 to the values listed; Planer Floor Chains ................................................. 1.75 Calenders ................................................................. 2.0
Planer Tilting Hoist ................................................... 1.75 Chippers ................................................................... 2.5
for six or more cylinders, add 0.5 to the values Slab Conveyor .......................................................... 1.5 Coaters .................................................................... 1.0
listed. For systems utilizing AC or DC Mill Sorting Table ............................................................ 1.5 Converting Machines,
Motors as the prime mover, refer to Note (1). Trimmer Feed ........................................................... 1.75 except Cutters, Platers .......................................... 1.5
MARINE PROPULSION Couch Roll ............................................................... 1.75
Main Drives .............................................................. 2.0 Cutters, Platers ........................................................ 2.0
All peoplemoving MACHINE TOOLS Cylinders .................................................................. 1.75
applications must be referred to engineering. Bending Roll ............................................................ 2.0 Disc Refiners ........................................................... 1.75
Plate Planer ............................................................. 1.5 Dryers ...................................................................... 1.75
Punch Press — Gear Driven ................................... 2.0 Felt Stretcher ........................................................... 1.25
Tapping Machines .................................................... 2.5 Felt Whipper ............................................................. 2.0
Typical Other Machine Tools Jordans .................................................................... 1.75
Application Service Main Drives .......................................................... 1.5 Line Shaft ................................................................. 1.5
Factor Auxiliary Drives .................................................... 1.25 Log Haul ................................................................... 2.0
AGITATORS METAL MILLS Pulp Grinder ............................................................. 1.75
Pure Liquids .......................................................... 1.0 Draw Bench — Carriage .......................................... 2.0 Press Roll ................................................................. 2.0
Liquids & Solids .................................................... 1.25 Draw Bench — Main Drive ...................................... 2.0 Reel .......................................................................... 1.5
Liquids — Variable Density ................................... 1.25 Forming Machines ................................................... 2.0 Stock Chests ............................................................ 1.5
BLOWERS Slitters ...................................................................... 1.5 Suction Roll .............................................................. 1.75
Centrifugal ............................................................. 1.0 Table Conveyors Washers & Thickeners ............................................. 1.5
Lobe ...................................................................... 1.5 Non-Reversing ..................................................... 2.25 Winders .................................................................... 1.5
Vane ...................................................................... 1.25 Reversing ............................................................. 2.5 PRINTING PRESSES ................................................ 1.5
BRIQUETTE MACHINES ........................................... 2.0 Wire Drawing & Flattening Machine ........................ 2.0 PULLERS — Barge Haul ........................................... 2.0
CAR PULLERS — Intermittent Duty .......................... 1.5 Wire Winding Machine ............................................. 1.75 PUMPS
COMPRESSORS METAL ROLLING MILLS (NOTE 1) Centrifugal ............................................................... 1.0
Centrifugal ............................................................. 1.0 Blooming Mills .......................................................... * Boiler Feed ............................................................... 1.5
Centriaxial ............................................................. 1.25 Coilers, hot mill ........................................................ 2.0 Reciprocating
Lobe ...................................................................... 1.5 Coilers, cold mill ....................................................... 1.25 Single Acting
Reciprocating — Multi-Cylinder ............................ 2.0 Cold Mills ................................................................. 2.0 1 or 2 Cylinders ................................................... 2.25
CONVEYORS — LIGHT DUTY Cooling Beds ........................................................... 1.75 3 or more Cylinders ............................................ 1.75
UNIFORMLY FED Door Openers .......................................................... 2.0 Double Acting ........................................................... 2.0
Apron, Bucket, Chain, Flight, Screw ..................... 1.25 Draw Benches .......................................................... 2.0 Rotary, Gear, Lobe, Vane ......................................... 1.5
Assembly, Belt ....................................................... 1.0 Edger Drives ............................................................ 1.75 RUBBER INDUSTRY
Oven ...................................................................... 1.5 Feed Rolls, Reversing Mills ..................................... 3.5 Mixer — Banbury ..................................................... 2.5
CONVEYORS — HEAVY DUTY Furnace Pushers ..................................................... 2.5 Rubber Calendar ..................................................... 2.0
NOT UNIFORMLY FED Hot Mills ................................................................... 3.0 Rubber Mill (2 or more) ............................................ 2.25
Apron, Bucket, Chain, Flight, Oven ....................... 1.5 Ingot Cars ................................................................ 2.5 Sheeter .................................................................... 2.0
Assembly, Belt ....................................................... 1.25 Kick-outs .................................................................. 2.5 Tire Building Machines ............................................ 2.5
Reciprocating, Shaker ........................................... 2.5 Manipulators ............................................................ 3.0 Tire & Tube Press Openers ..................................... 1.0
CRANES AND HOISTS (NOTE 1 and 2) Merchant Mills .......................................................... 3.0 Tubers & Strainers ................................................... 2.0
Main hoists, Reversing .......................................... 2.5 Piercers .................................................................... 3.0 SCREENS
Skip Hoists, Trolley & Bridge Drives ...................... 2.0 Pusher Rams ........................................................... 2.5 Air Washing .............................................................. 1.0
Slope ..................................................................... 2.0 Reel Drives .............................................................. 1.75 Grizzly ...................................................................... 2.0
CRUSHERS Reel Drums .............................................................. 2.0 Rotary — Stone or Gravel ....................................... 1.5
Ore, Stone ............................................................. 3.0 Reelers ..................................................................... 3.0 Traveling Water Intake ............................................. 1.25
DREDGES Rod and Bar Mills .................................................... 1.5 Vibrating ................................................................... 2.5
Cable Reels ........................................................... 1.75 Roughing Mill Delivery Table ................................... 3.0 SEWAGE DISPOSAL EQUIPMENT
Conveyors ............................................................. 1.5 Runout Tables Bar Screens ............................................................. 1.25
Cutter Head Jig Drives .......................................... 2.5 Reversing ............................................................. 3.0 Chemical Feeders .................................................... 1.25
Maneuvering Winches ........................................... 1.75 Non-Reversing ..................................................... 2.0 Collectors, Circuline or Straightline ......................... 1.25
Pumps ................................................................... 1.75 Saws, hot & cold ...................................................... 2.5 Dewatering Screens ................................................ 1.25
Screen Drives ........................................................ 1.75 Screwdown Drives ................................................... 3.0 Grit Collectors .......................................................... 1.25
Stackers ................................................................ 1.75 Skelp Mills ................................................................ 3.0 Scum Breakers ........................................................ 1.25
Utility Winches ....................................................... 1.5 Slitters ...................................................................... 3.0 Slow or Rapid Mixers ............................................... 1.25
ELEVATORS (NOTE 2) Slabbing Mills ........................................................... 3.0 Sludge Collectors ..................................................... 1.25
Bucket ................................................................... 1.75 Soaking Pit Cover Drives ......................................... 3.0 Thickeners ............................................................... 1.25
Centrifugal & Gravity Discharge ........................... 1.5 Straighteners ............................................................ 2.5 Vacuum Filters ......................................................... 1.25
Escalators ............................................................. 1.5 Tables, transfer & runout .......................................... 2.0 STEERING GEAR ...................................................... 1.0
Freight ................................................................... 2.5 Thrust Block ............................................................. 3.0 STOKERS .................................................................. 1.0
FANS Traction Drive ........................................................... 3.0 WINCH ........................................................................ 1.5
Centrifugal ............................................................. 1.0 Tube Conveyor Rolls ................................................ 2.5 WINDLASS ................................................................ 1.75
Cooling Towers ...................................................... 1.5 Unscramblers ........................................................... 2.5
Forced Draft .......................................................... 1.5 Wire Drawing ........................................................... 1.5 * Refer to KOP-FLEX
Induced Draft without Damper MILLS, ROTARY TYPE
Control ............................................................... 2.0 Ball ........................................................................... 2.25 NOTES
FEEDERS Dryers & Coolers ..................................................... 2.0 (1) Maximum Torque at the coupling must not exceed
Apron, Belt, Disc, Screw ....................................... 1.25 Hammer ................................................................... 1.75 Rated Torque of the coupling.
Reciprocating ........................................................ 2.5 Kilns ......................................................................... 2.0 (2) Check local and industrial safety codes.
162
Selection Procedure
1. Select Coupling Based on Bore Capacity. 3. Check Balance Requirements.
Select the coupling size that has a maximum bore Consult the Dynamic Balancing Guide to help determine
capacity equal to or larger than the larger of the two if balancing is required. Verify that the maximum operating
shafts. For interference fits larger than AGMA speed does not exceed the maximum speed rating of the
standards, consult KOP-FLEX. coupling. The maximum speed rating does not consider
2. Verify Coupling Size Based on Load Rating. lateral critical speed considerations for floating shaft
a. Select appropriate Service Factor from the Table on applications.
page 162.
b. Calculate required HP / 100 RPM: Note: Care must be exercised on proper selection of any
HP x Service Factor x 100 shaft coupling. The Users must assure themselves
= HP / 100 RPM that the design of the shaft to coupling hub
RPM
c. Verify that the selected coupling has a rating connection is adequate for the duty intended.
greater than or equal to the required HP / 100
RPM.
Dynamic Balancing Guide

Balancing requirements for a coupling are dependent on FAST’S® and Series H gear couplings may be component
factors determined by the characteristics of the connected balanced, or assembly balanced with fitted components
equipment. For this reason, the Balancing Charts should be (Type FB and Type HB, respectively).
used as a GUIDE ONLY to assist in determining whether or
not balancing is required. WALDRON ® gear couplings are available component
balanced only.
The Balancing Charts shown are based on AGMA 9000-
C90 suggested balance classes for systems with “Average” Model B gear couplings are not designed to be balanced.
sensitivity to unbalance. For systems with higher sensitivity
to unbalance, balancing of the coupling may be required at These charts apply to sizes 1 through 7 only. Dynamic
lower speeds. For systems which are less sensitive to unbalance of size 8 through 30 must be considered on a case-
balance, couplings may be able to operate at higher speeds by-case basis. Consult KOP-FLEX for assistance.
than those shown at lower balance levels. Therefore, in the
absence of either a thorough system analysis or past user
experience with a similar installation, these charts should
be used as a GUIDE ONLY.
163
Full Flex Coupling Size 1-7
A conventional 4-bearing system has two bearings on the
driving shaft and two bearings on the driven shaft. Both
angular and offset shaft misalignment will be present to some
degree and a full flex coupling is mandatory. The full flex
coupling is the standard coupling having two gear ring sets,
one set per half coupling. For selection procedure see page
163.
Coupling Greases
applications. For proper lubrication and long service life, use KSG
Standard Coupling Grease, or KHP High Performance Coupling
Maximum Mo aximum Weight

Rating Peak Dimensions
Coupling Bore with B re with Reduced Torque Maximum with
HP / Torque
R educed Depth Rating Speed Solid
Size Standard 100 Rating
D e p t h Keyway (lb.-in.) (RPM) Hubs A B C CI CW E G KN KR O
Keyway RPM (lb.-in.)
Keyway (lb.)
1 1 5/8 1 3/4 3/8 x 1/8 12 7500 15000 14500 10 4 9/16 3 1/16 1/8 3/16 1/4 1 11/16 3 1/16 7/32 9/32 2 3/8
1 1/2 2 1/4 2 3/8 5/8 x 7/32 27 17000 34000 12000 18 6 3 9/16 1/8 5/16 1/2 1 15/16 3 15/16 7/32 13/32 3 1/8
2 2 7/8 3 3/4 x 1/4 50 31500 63000 9300 33 7 4 11/16 1/8 9/16 1 2 7/16 4 15/16 5/32 19/32 4
2 1/2 3 1/2 3 3/4 7/8 x 5/16 90 56700 113400 7900 57 8 3/8 5 3/8 3/16 15/32 3/4 3 1/32 5 7/8 7/16 23/32 4 7/8
3 4 4 3/8 1 x 3/8 160 101000 202000 6800 85 9 7/16 6 9/16 3/16 29/32 1 5/8 3 19/32 6 7/8 13/32 1 1/8 5 5/8
3 1/2 4 5/8 5 1 1/4 x 7/16 235 148000 296000 6000 130 11 7 11/16 1/4 1 1/16 1 7/8 4 3/16 7 29/32 15/32 1 9/32 6 1/2
4 5 1/2 6 1/8 1 1/2 x 1/2 375 236000 472000 5260 192 12 1/2 8 3/4 1/4 1 1/4 2 1/4 4 3/4 9 1/4 1/2 1 1/2 7 3/4
4 1/2 6 1/4 6 7/8 1 3/4 x 1/2 505 318000 636000 4770 261 13 5/8 9 11/16 5/16 1 7/16 2 9/16 5 5/16 10 3/8 5/8 1 3/4 8 1/2
5 7 1 /8 7 3/8 1 3/4 x 1/2 700 441000 882000 4300 376 15 5/16 11 1/16 5/16 1 31/32 3 5/8 6 1/32 11 9/16 21/32 2 5/16 9 1/2
5 1/2* 8 8 1/4 2 x 1/2 920 580000 1160000 3880 474 16 3/4 12 7/16 5/16 2 3/32 3 7/8 6 29/32 12 11/16 27/32 2 5/8 10 1/2
6* 8 7/8 9 1/4 2 1/2 x 5/8 1205 759000 1518000 3600 604 18 13 5/16 5/16 2 11/32 4 3/8 7 13/32 13 7/8 29/32 2 15/16 11 1/2
7* 10 3/8 10 3/4 2 1/2 x 3/4 1840 1160000 2320000 3000 902 20 3/4 15 3/8 3/8 2 13/16 5 1/4 8 11/16 16 1/16 1 3/16 3 5/8 13 1/2
* Sizes 5 1/2, 6 and 7 are only available with exposed bolt sleeves. Type EB exposed bolt sleeves are standard.
TYPE EB -
EXPOSED BOLTS
TYPE SB -
SHROUDED BOLTS
Fastener Data
Type EB Type SB
Coupling Exposed Bolt Shrouded Bolt
Size Size & Bolt Size & Bolt ONE HUB REVERSED
Qty. Length Circle Qty. Length Circle
1 6 1/4 x 1 1/2 3 3/4 6 1/4 x 7/8 3 3/4
1 1/2 8 3/8 x 2 4 13/16 8 3/8 x 1 4 13/16
2 6 1/2 x 2 1/2 5 7/8 10 3/8 x 1 5 13/16
2 1/2 6 5/8 x 2 3/4 7 1/8 10 1/2 x 1 5/16 7
3 8 5/8 x 2 3/4 8 1/8 12 1/2 x 1 5/16 8
3 1/2 8 3/4 x 3 3/8 9 1/2 12 5/8 x 1 5/8 9 9/32
4 8 3/4 x 3 3/8 11 14 5/8 x 1 5/8 10 5/8

4 1/2 10 3/4 x 3 3/8 12 14 5/8 x 1 5/8 11 3/4
5 8 7/8 x 4 1/4 13 1/2 14 3/4 x 2 1/8 13 3/16
5 1/2* 14 7/8 x 3 1/4 14 1/2 - - -
6* 14 7/8 x 3 1/4 15 3/4 - - -
7* 16 1 x 3 5/8 18 1/4 - - -
Sizes #5 1/2 and larger are available in exposed bolts only.
TWO HUBS REVERSED
164
Series H coupling sizes 8-30 feature an all-metal
end ring which can be easily removed to inspect
the hub and sleeve teeth without removing the hub
from its shaft.
All end rings have gaskets and are bolted to the
sleeves. Non-critical surfaces are as-cast, or as-
forged. Sleeves have mating male and female
rabbets at the center and end flange joints to
simplify installation. The sleeves have two lube
plugs in the body.
Standardized center flanges allow flex-half
substitution regardless of design or vintage. All bolts
are special with respect to body length, thread
length, and bolt body tolerance.
Sizes 8 - 30 are available with exposed bolts
only.
Maximum Dimensions
Coupling Bore with Rating Torque Rating PeaRkaT orque Maximum Weight with
ting Speed Solid Hubs
Size Standard Key HP / 1 00 RP M (l b .-i n . x 1 00 0 ) (lb.-in. x 1000) (RPM) (lb.) A B C CI CW E O
8 10 3/4 2230 1404 2808 1750 1430 23 1/4 19 1/2 3/8 5 9/16 10 3/4 9 13/16 14
9 11 3/4 3170 1995 3990 1625 2000 26 21 3/4 1/2 6 1/4 12 10 7/8 15 1/2
10 13 4350 2744 5488 1500 2670 28 24 1/2 7 1/8 13 3/4 12 17 1/2
11 15 5780 3645 7290 1375 3520 30 1/2 26 1/4 1/2 7 7/8 15 1/4 13 1/8 19 1/2
12 16 1/4 7190 4532 9064 1250 4450 33 27 3/4 1/2 8 1/8 15 3/4 13 7/8 21 1/2
13 17 1/2 9030 5688 11376 1125 5410 35 3/4 29 1/2 3/4 8 7/16 16 1/8 14 5/8 23
14 18 3/4 11080 6982 13964 1000 6600 38 31 1/4 3/4 9 17 1/4 15 1/2 25
15 20 3/4 13470 8488 16976 875 8040 40 1/2 33 1/8 3/4 9 7/16 18 1/8 16 1/2 27
16 22 16100 10150 20300 750 9680 43 35 1 9 7/8 18 3/4 17 3/8 29
18 25 1/4 21100 13300 26600 500 12500 47 1/4 36 1/8 1 10 1/4 19 1/2 18 33
20 27 1/4 28800 18144 36288 400 17900 53 1/2 42 3/8 1 12 3/8 23 3/4 21 1/8 36 1/2
22 30 38100 24009 48018 300 23300 59 46 1 13 3/4 26 1/2 23 40
24 33 1/4 42400 26699 53398 200 30300 64 1/4 49 1/2 1 15 29 24 3/4 44 1/2
26 36 3/4 53000 33415 66830 200 37700 68 1/2 53 1 15 5/8 30 1/4 26 1/2 48 1/2
28 40 65900 41564 83128 200 45200 73 3/4 54 1/4 1 15 7/8 30 3/4 27 1/8 52 1/2
30 43 1/2 80300 50614 101228 200 52700 78 55 1/4 1 15 7/8 30 3/4 27 5/8 56 1/2
Fastener Data
Center End
Coupling Flange Ring
Size Bolt Quantity Size & Bolt
Quantity Size & Length
Circle (each) Length Circle
8 16 1 1/8 x 4 1/8 20 3/4 10 1/2 x 2 19 3/8
9 18 1 1/4 x 4 1/2 23 1/4 12 5/8 x 2 3/16 21 3/4
10 18 1 3/8 x 5 3/8 25 1/4 12 5/8 x 2 3/16 23 7/8
11 18 1 1/2 x 5 7/8 27 1/2 12 5/8 x 2 3/16 26 1/16
12 18 1 1/2 x 6 1/8 30 12 3/4 x 2 9/16 28 5/16
13 18 1 5/8 x 6 3/8 32 1/4 12 3/4 x 2 9/16 30 1/2

14 18 1 3/4 x 6 5/8 34 1/2 14 3/4 x 2 9/16 32 5/8
ONE HUB REVERSED 20 1 3/4 x 6 5/8 36 3/4 14 7/8 x 2 7/8 35
15
16 20 2 x 7 3/8 39 14 7/8 x 2 7/8 37 1/8
18 22 2 x 7 3/8 43 1/4 14 7/8 x 2 7/8 41 3/8
20 22 2 1/4 x 7 5/8 48 3/4 16 1 x 3 5/8 46 1/4

22 22 2 1/2 x 8 1/8 53 1/2 16 1 x 3 5/8 50 3/4
24 22 2 3/4 x 8 7/8 58 1/4 16 1 1/8 x 4 1/8 55
26 24 2 3/4 x 8 7/8 62 1/2 18 1 1/8 x 4 1/8 59 1/4
28 22 3 x 9 5/8 67 1/4 16 1 1/4 x 4 1/4 63 11/16
30 24 3 x 9 5/8 71 1/2 18 1 1/4 x 4 1/4 68 3/16
TWO HUBS REVERSED
165
Coupling Type EB (Exposed Bolts) Part Numbers
Full Flex Coupling Fastener Set Sleeve Flex Hub

(Includes Gasket)
Coupling
Size Finish Finish
No Bore Wt. Bore Part No. Wt. Part No. Wt. No Bore Wt. Bore
Part No. Part No.
Part No. Part No.
1 1H EB FF 10 1H EB FF FB 1 EB FS 1 1H EB SLEEVE 2 1H FHUB 3 1H FHUB
1 1/2 1 1/2H EB FF 19 1 1/2H EB FF FB 1 1/2 EB FS 1 1 1/2H EB SLEEVE 6 1 1/2H FHUB 3 1 1/2H FHUB FB
2 2H EB FF 30 2H EB FF FB 2 EB FS 1 2H EB SLEEVE 8 2H FHUB 7 2H FHUB FB

5 1/2 5 1/2H EB FF 422 5 1/2H EB FF FB 5 1/2 EB FS 14 5 1/2H EB SLEEVE 89 5 1/2H FHUB 115 5 1/2H FHUB
All finish bores and keyways per AGMA 9002-A86 commercial standard tolerances with interference fit bores. Clearance fit bores are available on request
and include one setscrew over keyway.
Coupling Type SB (Shrouded Bolts) Part Numbers

Fastener Set
Full Flex Coupling Sleeve Flex Hub
(Includes Gasket)
Coupling
Size Finish Finish
No Bore No Bore
Wt. BoreÀ Part No. Wt. Part No. Wt. Wt. BoreÀ
Part No. Part No.
Part No. Part No.
1 1H SB FF 10 1H SB FF FB 1 SB FS 1 1H SB SLEEVE 2 1H FHUB 3 1H FHUB FB
1 1/2 1 1/2H SB FF 19 1 1/2H SB FF FB 1 1/2 SB FS 1 1 1/2H SB SLEEVE 6 1 1/2H FHUB 3 1 1/2H FHUB FB
All finish bores and keyways per AGMA 9002-A86 commercial standard tolerances with interference fit bores. Clearance fit bores are available on request
and include one setscrew over keyway.
Coupling Type (Exposed Bolts) Part Numbers

Center Flange End Ring
Coupling Full Flex Male Half Female Half Hub Male Sleeve Female Sleeve End Ring Fastener Set Fastener Set
Size w/Access w/Access
(includes gasket) (includes gasket)
8 8H EB FF 8H EB MH 8H EB FH 8H FHUB 8H EB MSLEEVE 8H EB FSLEEVE 8H ERING 8 EB FS 8 ERFS
166
Spacer Coupling Size 1 1/2 - 7
Standard Spacer Couplings
Full-flex spacer couplings are used for 4 bearing

installations with extended shaft separations. Tabulated
below are spacers for industry standard shaft
separations, CL.
Type EB exposed bolt spacers and Type SB shrouded

bolt spacers for standard shaft separations are normally
in stock. Other lengths are manufactured to order.
Spacer length, L, is calculated by subtracting the

standard full-flex, close coupled gap, C, from the shaft
separation, CL.
L=C -C
L (full-flex, close coupled)
Spacer Part Numbers
Stock Spacer Part Numbers Stock Spacer Part Numbers
Type SB (Shrouded Bolts) Type EB (Exposed Bolts)
Shaft Separation Shaft Separation
Coupling 3 1/2" 4 3/8" 5" 7" Coupling
Size Size 5" 7"
Part No. Wt. Part No. Wt. Part No. Wt. Part No. Wt. Part No. Wt. Part No. Wt.
1 1/2 1 1/2 SB SPR350 6 1 1/2 SB SPR438 7 1 1/2 SB SPR500 8 1 1/2 1 1/2 EB SPR500 8
2 2 SB SPR350 8 2 SB SPR438 9 2 SB SPR500 10 2 SB SPR700 12 2 2 EB SPR500 10 2 EB SPR700 12
2 1/2 2 1/2 SB SPR500 14 2 1/2 SB SPR700 17 2 1/2 2 1/2 EB SPR500 14
3 3 SB SPR500 17 3 SB SPR700 20 3 3 EB SPR500 17
3 1/2 3 1/2 SB SPR500 27
Note: Spacer part number references the shaft separation, not the actual length of the spacer.
LEF Spacer Couplings
Limited End Float (LEF) spacer couplings are used for

sleeve bearing motor applications with extended shaft
separations. LEF spacers are supplied with steel LEF
plates installed in each end.
Spacer length, LLEF, is calculated by subtracting the LEF

full-flex, close coupled gap, C LEF , from the shaft
separation, C .
L
L =C -C
LEF L LEF (full-flex, close coupled)
LEF spacers are shorter than standard spacers for a
given shaft separation, and are manufactured to order.
Coupling sizes 8 - 30 are also available as

spacer couplings for extended shaft Spacer Couplings Size 8-30
separations. These sizes are available in
exposed bolt only.
Spacers for coupling sizes 4 - 30 are non-stock

and are manufactured to order. LEF spacer
couplings are also manufactured to order.
Note: Spacer part number references the shaft

separation, not the actual length of the spacer.
Coupling Greases
KOP-FLEX offers greases specifically designed for
use in coupling applications. For proper lubrication
and long service life, use KSG Standard Coupling
Grease, or KHP High Performance Coupling
Grease. See pages 204-206 for detailed
specifications.
167
Flex Rigid and Floating Shaft Couplings
When driving and driven shafts are widely
Coupling Type EB (Exposed Bolts) Part Numbers
Size 1- 7
separated, an unsupported or floating shaft is
used to span the gap. The two couplings required Flex Rigid Coupling Rigid HubÁ
Coupling Finish Finish
at each end of that shaft consist of one half of a Size No Bore Wt. BoreÀ N o B or e Wt. BoreÀ
Part No. Part No.
standard coupling bolted to a Rigid Hub, each Part No. Part No.
1 1H EB FR 10 1H EB FR FB 1 EB RHUB 5 1 EB RHUB FB
unit called a Flex-Rigid Coupling. Usually, the 1 1/2 1 1/2H EB FR 19 1 1/2H EB FR FB 1 1/2 EB RHUB 9 1 1/2 EB RHUB FB
rigid hubs are mounted on the driving and driven 2 2H EB FR 31 2H EB FR FB 2 EB RHUB 15 2 EB RHUB FB
shafts so that the flex halves on the floating shaft 2 1/2 2 1/2H EB FR 55 2 1/2H EB FR FB 2 1/2 EB RHUB 27 2 1/2 EB RHUB FB
may be replaced without disturbing the 3 3H EB FR 83 3H EB FR FB 3 EB RHUB 40 3 EB RHUB FB
connected equipment. 3 1/2 3 1/2H EB FR 126 3 1/2H EB FR FB 3 1/2 EB RHUB 65 3 1/2 EB RHUB FB
4 1/2 4 1/2H EB FR 252 4 1/2H EB FR FB 4 1/2 EB RHUB 124 4 1/2 EB RHUB FB
5 1/2 5 1/2H EB FR 418 5 1/2H EB FR FB 5 1/2 EB RHUB 200 5 1/2 EB RHUB FB

Coupling Type SB (Shrouded Bolts) Part Numbers
Flex Rigid Coupling Rigid HubÁ
Coupling Finish Finish
No Bore N o B or e
Size Wt. BoreÀ Wt. BoreÀ
Part No. Pa r t N o.
Part No. Part No.
1 1H SB FR 10 1H SB FR FB 1 SB RHUB 5 1 SB RHUB FB
1 1/2 1 1/2H SB FR 19 1 1/2H SB FR FB 1 1/2 SB RHUB 9 1 1/2 SB RHUB FB

All finish bores and keyways per AGMA 9002-A86 commercial standard tolerances.
Flex-Rigid Coupling Data Rigid hubs are furnished less fasteners.
Maximum Bore Dimensions
with Standard Keyway Peak Maximum
Coupling Rating Torque Torque
HP / 100 Rating Speed
Size Rating (RPM) CFR
Flex Rigid RPM (lb.-in.) A BF BR E ER GR
(lb.-in.) Á
À
1 1 5/8 2 1/4 12 7500 15000 14500 4 9/16 1 17/32 1 21/32 5/32 1 11/16 1 9/16 3
1 1/2 2 1/4 2 11/16 27 17000 34000 12000 6 1 25/32 1 15/16 5/32 1 15/16 1 27/32 3 13/16
2 2 3/4 3 3/8 50 31500 63000 9300 7 2 11/32 2 3/8 5/32 2 7/16 2 9/32 4 13/16
2 1/2 3 1/2 4 90 56700 113400 7900 8 3/8 2 11/16 3 3/16 3 1/32 2 29/32 5 3/4
3 4 4 3/4 160 101000 202000 6800 9 7/16 3 9/32 3 9/16 3/16 3 19/32 3 15/32 6 3/4
3 1/2 4 1/2 5 1/2 235 148000 296000 6000 11 3 27/32 4 1/8 7/32 4 3/16 4 1/32 7 3/4
4 5 1/2 6 3/8 375 236000 472000 5260 12 1/2 4 3/8 4 5/8 5/16 4 3/4 4 7/16 9
4 1/2 6 7 1/4 505 318000 636000 4770 13 5/8 4 27/32 5 1/4 11/32 5 5/16 5 1/16 10 1/8
5 6 7/8 8 1/2 700 441000 882000 4300 15 5/16 5 17/32 5 7/8 11/32 6 1/32 5 11/16 11 3/8
5 1/2* 7 3/4 8 920 580000 1160000 3880 16 3/4 6 7/32 7 5/32 11/32 6 29/32 6 31/32 10 3/4
6* 8 5/8 8 3/4 1205 759000 1518000 3600 18 6 21/32 7 21/32 11/32 7 13/32 7 15/32 11 1/2
7* 10 3/8 10 1840 1160000 2320000 3000 20 3/4 7 11/16 9 7/16 8 11/16 8 3/4 13 3/8
* Sizes 5 1/2, 6 and 7 are only available with exposed bolts. Type EB exposed bolts are standard.
Floating shaft length is equal to the shaft separation minus 2 times the CFR dimension.
Max. speed is based on flange stress limits and does not consider lateral critical speed considerations for floating shaft applications.
FLOATING SHAFT
ASSEMBLY
Ordering Instructions: When ordering floating shaft couplings, be sure to include hp and rpm, shaft separation, and equipment shaft
sizes. Applications with very large shaft separations and/or high speeds may require tubular floating shafts
due to lateral critical speed concerns.
Important: Care must be exercised in proper selection of any shaft coupling. The Users must assure themselves that the design of the shaft to
coupling hub connection is adequate for the duty intended.
168
Flex Rigid and Floating Shaft Couplings
Size 8 - 30
Coupling Type EB
(Exposed Bolts) Part Numbers
Coupling Flex Rigid Male Female
Size w/Access Rigid Rigid
8 8H EB FR 8H EB MRHUB 8H EB FRHUB


Maximum Bore Peak Weight

Rating Torque Maximum with Dimensions
Coupling with Standard Key HP / 100 Torque Rating Rating Speed Solid
Size RPM (lb.-in. x 1000) (lb.-in. x (RPM) Hubs CFR
Flex Rigid Á A BF BR E GR
1000) (lb.) À
8 10 3/4 11 2230 1404 2808 1750 1470 23 1/4 9 3/4 10 1/8 1/2 9 13/16 15 1/4
9 11 3/4 12 3/4 3170 1995 3990 1625 1960 26 10 7/8 11 13/16 9/16 10 7/8 17 1/4
10 13 13 1/2 4350 2744 5488 1500 2720 28 12 12 3/8 5/8 12 19
11 15 15 5780 3645 7290 1375 3520 30 1/2 13 1/8 13 1/2 5/8 13 1/8 20 3/4
12 16 1/4 16 1/4 7190 4532 9064 1250 4450 33 13 7/8 14 1/4 5/8 13 7/8 22 5/8
13 17 1/2 18 9030 5688 11376 1125 5480 35 3/4 14 3/4 15 3/4 14 5/8 24 5/8
14 18 3/4 19 11080 6982 13964 1000 6560 38 15 5/8 15 7/8 3/4 15 1/2 26 1/4
15 20 3/4 20 1/2 13470 8488 16976 875 7920 40 1/2 16 9/16 16 7/8 3/4 16 1/2 28
16 22 22 16100 10150 20300 750 9560 43 17 1/2 17 7/8 1 17 3/8 29 3/4
18 25 1/4 25 21100 13300 26600 500 12400 47 1/4 18 1/16 18 1/2 1 18 34
20 27 1/4 26 28800 18144 36288 400 16500 53 1/2 21 3/16 21 5/8 1 21 1/8 36
22 30 27 38100 24009 48018 300 21000 59 23 23 5/8 1 1/8 23 38
24 33 1/4 28 42400 26699 53398 200 26300 64 1/4 24 3/4 25 3/8 1 1/8 24 3/4 40
26 36 3/4 29 53000 33415 66830 200 32000 68 1/2 26 1/2 27 1/8 1 1/8 26 1/2 42
28 40 30 65900 41564 83128 200 37700 73 3/4 27 1/8 27 3/4 1 1/8 27 1/8 44
30 43 1/2 36 80300 50614 101228 200 43400 78 27 5/8 28 1/4 1 1/8 27 5/8 50
NOTE: Couplings are only available with exposed bolts.
Floating shaft length is equal to the shaft separation, minus 2 times the CFR dimension.
Max. speed is based on flange stress limits and does not consider lateral critical speed considerations for floating shaft applications.
FLOATING SHAFT
ASSEMBLY
Ordering Instructions: When ordering floating shaft couplings, be sure to include hp and rpm, shaft separation, and equipment shaft
sizes. Applications with very large shaft separations and/or high speeds may require tubular floating shafts
due to lateral critical speed concerns.
Important: Care must be exercised in proper selection of any shaft coupling. The Users must assure themselves that the design of the shaft to
coupling hub connection is adequate for the duty intended.
169
AISE Mill Motor Coupling
The Series H Mill Motor Coupling is
designed for use on AISE and other mill
motors having tapered shafts with
locknuts, and are used primarily in the
metals industry. This design is also
commonly used on other types of
equipment which use tapered shafts with
locknuts, such as turbines, pumps, and
compressors.
The standard “composite” mill motor hub

is a semi-finished hub which can be
modified and bored to fit a variety of AISE
mill motor frames. Note that one size of
coupling will fit several motor frames;
conversely, several sizes may fit a single
motor frame. See page 163 for proper
coupling selection.
Maximum Peak
Torque Maximum Weight with Dimensions
Coupling Bore with Rating Torque
Rating Speed Solid Hubs
Size Standard HP / 100 RPM Rating
(lb.-in.) (RPM) (lb.) A B E
Key (lb.-in.)
1 1/2 2 1/4 27 17000 34000 12000 22.9 6 3 9/16 1 15/16
2 2 3/4 50 31500 63000 9300 38.9 7 4 11/16 2 7/16
2 1/2 3 1/2 90 56700 113400 7900 70 8 3/8 5 3/8 3 1/32
3 4 160 101000 202000 6800 100 9 7/16 6 9/16 3 19/32
3 1/2 4 1/2 235 148000 296000 6000 155 11 7 11/16 4 3/16
4 5 1/2 375 236000 472000 5260 219 12 1/2 8 3/4 4 3/4

4 1/2 6 505 318000 636000 4770 298 13 5/8 9 11/16 5 5/16
5 6 7/8 700 441000 882000 4300 433 15 5/16 11 1/16 6 1/32
5 1/2* 7 3/4 920 580000 1160000 3880 610 16 3/4 12 7/16 6 29/32
6* 8 5/8 1205 759000 1518000 3600 718 18 13 5/16 7 13/32
See next page for additional dimensions.

* Sizes 5 1/2 and 6 are only available with exposed bolts. Type EB exposed bolts are standard.
MILL MOTOR COMPOSITE HUB MILL MOTOR COMPOSITE HUB

ROUGH BORED FINISH BORED
170
AISE Mill Motor Coupling
For: Rough Bored Composite Hub Finish Bored Composite Hub For AISE Mill Motors
Type AISE Dimensions & Part Numbers Dimensions & Part Numbers
MM Mill Dimensions Dimensions Bore Dia.
Coupling Motor
Size Frame Part Large Small Keyway Part
Sizes CH EM XM Number C CHM EHM XHM M N Number
End End
1 1/2 802 3/4 3 7/8 23/32 1 1/2H MMHUB 1/8 3/4 3 5/16 23/32 2 5/8 5/16 1 1/2H MMHUB02
602
2 AC1 1 1/16 4 3/16 27/32 2H MMHUB 1/8 1 1/16 3 27/32 – – 1.749 1.4365 1/2 x 1/4 2H MMHUB02
AC2
2 1/2 AC4 1 1/8 5 9/16 1 1/8 2 1/2H MMHUB 3/16 1 1/8 3 1 1/8 – – 2 1/2H MMHUB02
1 1/2 3/4 3 7/8 23/32 1 1/2H MMHUB 1/8 3/4 3 7/8 23/32 2 5/8 3/8 1 1/2H MMHUB0304
803
2 804 1 1/16 4 3/16 27/32 2H MMHUB 1/8 1 1/16 3 9/16 27/32 2 5/8 1/16 2H MMHUB0304
603 1.999 1.6344 1/2 x 1/4
2 1/2 1 1/8 5 9/16 1 1/8 2 1/2H MMHUB 3/16 1 3/16 3 1/2 1 1/16 – – 2 1/2H MMHUB0304
604
3 1 3/16 5 5/8 1 5/8 3H MMHUB 3/16 1 3/16 3 1/2 1 5/8 – – 3H MMHUB0304
2 1 1/16 4 3/16 27/32 2H MMHUB 1/8 1 1/16 4 3/16 27/32 3 1/8 3/16 2 H MMHUB06
806
2 1/2 606 1 1/8 5 9/16 1 1/8 2 1/2H MMHUB 3/16 1 5/16 4 15/16 – – 2 1/2H MMHUB06
AC8 2.499 2.0823 1/2 x 1/4
3 1 3/16 5 5/8 1 5/8 3H MMHUB 3/16 1 5/16 4 1 1/2 – – 3H MMHUB06
AC12
3 1/2 1 3/8 6 1/8 1 29/32 3 1/2H MMHUB 1/4 1 3/8 4 1 29/32 – – 3 1/2H MMHUB06
2 1/2 1 1/8 5 9/16 1 1/8 2 1/2H MMHUB 3/16 1 9/32 4 21/32 31/32 3 3/4 5/32 2 1/2H MMHUB08
808 2.9985 2.5298 3/4 x 1/4
3 608 1 3/16 5 5/8 1 5/8 3H MMHUB 3/16 1 7/16 4 1/2 1 3/8 – – 3H MMHUB08
3 1/2 1 3/8 6 1/8 1 29/32 3 1/2H MMHUB 1/4 1 1/2 4 1/2 1 25/32 – – 3 1/2H MMHUB08
2 1/2 1 1/8 5 9/16 1 1/8 2 1/2H MMHUB 3/16 1 9/32 4 25/32 31/32 4 9/32 2 1/2H MMHUB10
3 810 1 3/16 5 5/8 1 5/8 3H MMHUB 3/16 1 9/16 4 1/2 1 1/4 – – 3H MMHUB10
610 3.2485 2.7798 3/4 x 1/4
3 1/2 AC18 1 3/8 6 1/8 1 29/32 3 1/2H MMHUB 1/4 1 5/8 4 1/2 1 21/32 – – 3 1/2H MMHUB10
4 1 9/16 6 2 3/16 4H MMHUB 1/4 1 5/8 4 1/2 2 1/8 – – 4H MMHUB10
2 1/2 1 1/8 5 9/16 1 1/8 2 1/2H MMHUB 3/16 1 9/32 5 13/32 31/32 4 1/4 13/32 2 1/2H MMHUB12
3 812 1 3/16 5 5/8 1 5/8 3H MMHUB 3/16 1 11/16 5 1 1/8 – – 3H MMHUB12
612 3.623 3.1022 3/4 x 1/4
3 1/2 AC25 1 3/8 6 1/8 1 29/32 3 1/2H MMHUB 1/4 1 3/4 5 1 17/32 – – 3 1/2H MMHUB12
4 AC30 1 9/16 6 2 3/16 4H MMHUB 1/4 1 3/4 5 2 – – 4H MMHUB12
4 1/2 1 5/8 7 3/16 2 19/32 4 1/2H MMHUB 5/16 1 13/16 5 2 13/32 – – 4 1/2H MMHUB12
3 1 3/16 5 5/8 3 9/32 3H MMHUB 3/16 1 11/16 5 1/4 1 1/8 5 1/4 1/8 3H MMHUB14
3 1/2 814 1 3/8 6 1/8 1 29/32 3 1/2H MMHUB 1/4 1 7/8 5 1 13/32 – – 3 1/2H MMHUB14
614 4.248 3.7272 1 x 3/8
4 AC40 1 9/1 6 6 2 3 /1 6 4 H M M H U B 1 / 4 1 7 / 8 5 1 7 /8 – – 4H MMHUB14
4 1/2 AC50 1 5/8 7 3/16 2 19/32 4 1/2H MMHUB 5/16 1 15/16 5 2 9/32 – – 4 1/2H MMHUB14
5 1 5/8 8 5/16 3 9/32 5H MMHUB 5/16 1 15/16 5 2 31/32 – – 5H MMHUB14
3 1/2 1 3/8 6 1/8 1 29/32 3 1/2H MMHUB 1/4 2 5 1/2 1 9/32 – – 3 1/2H MMHUB16
4 1 9/16 6 2 3/16 4H MMHUB 1/4 2 5 1/2 1 3/4 – – 4H MMHUB16
4 1/2 816 1 5/8 7 3/16 2 19/32 4 1/2H MMHUB 5/16 2 1/16 5 1/2 2 5/32 – – 4 1/2H MMHUB16
4.6225 4.0496 1 1/4 x 3/8
5 616 1 5/8 8 5/16 3 9/32 5H MMHUB 5/16 2 1/16 5 1/2 2 27/32 – – 5H MMHUB16
5 1/2 1 5/8 10 5/16 3 7/8 5 1/2H MMHUB 5/16 2 1/16 5 1/2 3 7/16 – – 5 1/2H MMHUB16
6 1 5/8 10 5/16 4 5/16 6H MMHUB 5/16 2 1/16 5 1/2 3 7/8 – – 6H MMHUB16
4 1 9/16 6 2 3/16 4H MMHUB 1/4 1 9/16 6 2 3/16 – – 4H MMHUB18
4 1/2 1 5/8 7 3/16 2 19/32 4 1/2H MMHUB 5/16 1 5/8 6 2 19/32 – – 4 1/2H MMHUB18
818
5 618 1 5 /8 8 5 /1 6 3 9 / 3 2 5 H M M H U B 5/ 1 6 1 5 / 8 6 3 9 / 3 2 – – 4.9975 4.3725 1 1/4 x 1/2 5H MMHUB18
5 1/2 1 5/8 10 5/16 3 7/8 5 1/2H MMHUB 5/16 1 5/8 6 3 7/8 – – 5 1/2H MMHUB18
6 1 5/8 10 5/16 4 5/16 6H MMHUB 5/16 1 5/8 6 4 5/16 – – 6H MMHUB18
4 1/2 1 5/8 7 3/16 2 19/32 4 1/2H MMHUB 5/16 2 1/16 6 3/4 2 5/32 – – 4 1/2H MMHUB20
5 1 5/8 8 5/16 3 9/32 5H MMHUB 5/16 2 1/16 6 3/4 2 27/32 – – 5H MMHUB20
620 5.872 5.1689 1 1/2 x 3/4
5 1/2 1 5/8 10 5/16 3 7/8 5 1/2H MMHUB 5/16 2 1/16 6 3/4 3 7/16 – – 5 1/2H MMHUB20
6 1 5/8 10 5/16 4 5/16 6H MMHUB 5/16 2 1/16 6 3/4 3 7/8 – – 6H MMHUB20
5 1 5/8 8 5/16 3 9/32 5H MMHUB 5/16 2 11/16 7 1/4 2 7/32 – – 5H MMHUB22
5 1/2 622 1 5/8 10 5/16 3 7/8 5 1/2H MMHUB 5/16 2 11/16 7 1/4 2 13/16 – – 6.247 5.4918 1 1/2 x 3/4 5 1/2H MMHUB22
6 1 5/8 10 5/16 4 5/16 6H MMHUB 5/16 2 11/16 7 1/4 3 1/4 – – 6H MMHUB22
5 1/2 1 5/8 10 5/16 3 7/8 5 1/2H MMHUB 5/16 2 11/16 9 1/4 2 13/16 – – 5 1/2H MMHUB24
624 6.9965 6.0330 1 1/2 X 3/4
6 1 5/8 10 5/16 4 5/16 6H MMHUB 5/16 2 11/16 9 1/4 3 1/4 – – 6H MMHUB24
*ALL KEYWAYS SHOWN ARE PARALLEL TO THE TAPER. TAPER IS 1 1/4 INCH PER FOOT ON DIAMETER.
TAPERED BORES For Tapered Shafts, with or without locknut,

determine applicable AISE Mill Motor frame or give data below:
1. U Major diameter.
2. V Length of tapered portion of shaft.
For More 3. X Length to face of lockwasher.
Information 4. Y Length of threaded projection.
5. ZW Locknut diameter across corners.
6. W Clearance to bearing housing.
7. Taper (inches on diameter per foot of length).
Visit www.kopflex.com 8. Keyway width and depth.
9. Whether keyway is parallel to shaft or to taper.
10. C Shaft separation if machines are in place.
171
Limited End Float Coupling Size 1-7
For sleeve bearing motor applications, a Series H standard full The equipment should be installed with the proper hub
flex coupling is supplied with an LEF disc to limit the axial float separation, CLEF, when the motor rotor is located on magnetic
of the motor rotor, and protect the motor bearings at start-up center.
and shut-down. The hub separation, CLEF is larger than for a
standard full flex, and the phenolic LEF disc is placed between The LEF disc part numbers are listed below. See page 166 for
the hubs at assembly, limiting the float of the motor rotor to the the standard full flex part numbers.
total LEF value shown.
Dimensions LEF DiscÀ

Total CLEF
Coupling T
LEF
Size (in.) A B CS min. E (Disc Part No. Wt.
(Hub
Width)
Sep.)
1 1/8 4 9/16 3 1/16 1/32 3/16 1 11/16 1/8 1H LEFD 1
1 1/2 1/8 6 3 9/16 1/32 3/16 1 15/16 1/8 1 1/2H LEFD 1
2 1/8 7 4 11/16 1/32 3/16 2 7/16 1/8 2H LEFD 1
2 1/2 3/16 8 3/8 5 3/8 3/64 9/32 3 1/32 3/16 2 1/2H LEFD 1
3 3/16 9 7/16 6 9/16 3/64 9/32 3 19/32 3/16 3H LEFD 1
3 1/2 3/16 11 7 11/16 3/64 13/32 4 3/16 5/16 3 1/2H LEFD 2
4 3/16 12 1/2 8 3/4 3/64 13/32 4 3/4 5/16 4H LEFD 2

4 1/2 3/16 13 5/8 9 11/16 3/64 17/32 5 5/16 7/16 4 1/2H LEFD 2
5 3/16 15 5/16 11 1/16 3/64 17/32 6 1/32 7/16 5H LEFD 2
5 1/2* 3/16 16 3/4 12 7/16 3/64 19/32 6 29/32 1/2 5 1/2H LEFD 2
6* 3/16 18 13 5/16 3/64 19/32 7 13/32 1/2 6H LEFD 2
7* 1/4 20 3/4 15 3/8 1/16 3/4 8 11/16 5/8 7H LEFD 2
* Sizes 5 1/2, 6 and 7 are only available with exposed bolts. Type EB exposed bolts are
standard.
LEF Discs are used only in close coupled applications. One disc is required per
coupling.
Note: For ratings and max. bores refer to page 164.
Coupling Greases
Note: Spacer part number references the shaft separation, applications. For proper lubrication and long service life, use KSG
not the actual length of the spacer. Standard Coupling Grease, or KHP High Performance Coupling
Vertical Coupling Size 1-7

For vertical applications, a standard full flex coupling is supplied
with a vertical plate, and vertical flange fasteners are used in
place of standard. The vertical plate is installed with button down,
and is used to support the assembled sleeves.
Dimensions Vertical PlateÀ Fastener Set

*Coupling (includes gasket)
Size
A CT CC T Part No. Wt. Part No. Wt.
1 4 9/16 1/16 1/4 1/8 1H EB VP 1 1 EB VSFS 1
1 1/2 6 1/16 1/4 1/8 1 1/2H EB VP 1 1 1/2 EB VSFS 1
2 7 1/16 1/4 1/8 2H EB VP 2 2 EB VSFS 1
2 1/2 8 3/8 3/32 5/16 1/8 2 1/2H EB VP 2 2 1/2 EB VSFS 2
3 9 7/16 3/32 5/16 1/8 3H EB VP 3 3 EB VSFS 3
3 1/2 11 1/8 7/16 3/16 3 1/2H EB VP 4 3 1/2 EB VSFS 5

4 12 1/2 1/8 7/16 3/16 4H EB VP 7 4 EB VSFS 5
4 1/2 13 5/8 5/32 1/2 3/16 4 1/2H EB VP 10 4 1/2 EB VSFS 7
5 15 5/16 5/32 1/2 3/16 5H EB VP 12 5 EB VSFS 9
5 1/2 16 3/4 5/32 9/16 1/4 5 1/2H EB VP 15 5 1/2 EB VSFS 14
6 18 5/32 9/16 1/4 6H EB VP 19 6 EB VSFS 14

7 20 3/4 3/16 11/16 5/16 7H EB VP 25 7 EB VSFS 22
* Exposed bolts are standard for all sizes.
LEF Discs are used only in close coupled applications. One disc is required per
coupling.
172
Slide Coupling
The Series H Slide coupling is designed for drive systems that
require greater end float or slide than a conventional application.
Spacer couplings, floating shaft arrangements, and most
coupling types can be supplied with a Slide flex half in one or
both flex half couplings.
For Flex-Rigid arrangements used in floating shaft couplings, a

stop plate is not required and a standard EB fastener set (FS) is
used.
FLOATING SHAFT ASSEMBLY
Total SlideÀ Dimensions

Coupling CSS CSR
Size* Full-Flex Flex-Rigid A Hub & Shaft Hub & Shaft E T O
BF BR ER
Separation Separation
Min. Max. Min. Max.
1 1/8 3/32 4 9/16 1 17/32 1 21/32 1/4 3/8 1/8 7/32 1 11/16 1 9/16 1/8 2 3/8
1 1/2 3/8 7/32 6 1 25/32 1 15/16 1/4 5/8 1/8 11/32 1 15/16 1 27/32 1/8 3 1/8
2 7/8 15/32 7 2 11/32 2 3/8 1/4 1 1/8 1/8 19/32 2 7/16 2 9/32 1/8 4
2 1/2 9/16 5/16 8 3/8 2 11/16 3 5/16 7/8 5/32 15/32 3 1/32 2 29/32 1/8 4 7/8
3 1 7/16 3/4 9 7/16 3 9/32 3 9/16 5/16 1 3/4 5/32 29/32 3 19/32 3 15/32 1/8 5 5/8
3 1/2 1 5/8 7/8 11 3 27/32 4 1/8 7/16 2 1/16 5/32 1 1/32 4 3/16 4 1/32 3/16 6 1/2
4 2 1 1/16 12 1/2 4 3/8 4 5/8 7/16 2 7/16 1/4 1 5/16 4 3/4 4 7/16 3/16 7 3/4
4 1/2 2 1/4 1 7/32 13 5/8 4 27/32 5 1/4 1/2 2 3/4 1/4 1 15/32 5 5/16 5 1/16 3/16 8 1/2
5 3 5/16 1 3/4 15 5/16 5 17/32 5 7/8 1/2 3 13/16 1/4 2 6 1/32 5 11/16 3/16 9 1/2
5 1/2 3 9/16 1 7/8 16 3/4 6 7/32 7 5/32 9/16 4 1/8 5/16 2 3/16 6 29/32 6 31/32 1/4 10 1/2
6 4 1/16 2 1/8 18 6 21/32 7 21/32 9/16 4 5/8 5/16 2 7/16 7 13/32 7 15/32 1/4 11 1/2
7 4 7/8 2 9/16 20 3/4 7 11/16 9 11/16 5 9/16 3/8 2 15/16 8 11/16 8 3/4 5/16 13 1/2
*Exposed bolts are standard for all sizes.
Note: For ratings, max. bores and additional dimensions, see page 168.
Fastener Set
Full Flex Coupling Stop Plate (Includes Gasket) Slide Sleeve Flex Hub
Coupling
Size * Finish
No Bore No Bore
Part No. Wt. Bore Part No. Wt. Part No. Wt. Part No. Wt. Part No. Wt.
Part No.
1 1H EB SSFF 10 1H EB SSFF FB 1 EB SP 1 1 EB VSFS 1 1H EB SSLEEVE 2 1H FHUB 3
1 1/2 1 1/2H EB SSFF 18 1 1/2H EB SSFF FB 1 1/2 EB SP 1 1 1/2 EB VSFS 1 1 1/2H EB SSLEEVE 6 1 1/2H FHUB 3

* Exposed bolts are standard for all sizes.

All finish bores and keyways per AGMA 9002-A86 commercial standard tolerances with interference fit bores. Clearance fit bores are available on request and
include one setscrew over keyway.
173
Brake Wheel Couplings
Series H Brakewheel couplings are comprised of
standard full flex couplings with longer flange bolts and
an extra gasket. Brakewheels are piloted to the outside
diameter of the sleeve flanges. These couplings are also
available in flex rigid configurations and with hubs bore
for AISE mill motors.
Standard brakewheels are made from carbon steel, but

are also commonly supplied in ductile iron for better
heat dissipation when braking. The user should specify
the required brakewheel material when ordering. The
brakewheel dimensions shown below are for reference
and can be modified to suit your particular application.
Brakewheels may also be used with the FAST’S® full

flex, flex rigid, mill motor and double engagement
designs. Consult KOP-FLEX for any special CB
requirements.
Typical Brakewheel
Coupling Dimensions (inches)
Dimensions (inches)
Maximum Peak
Rating Torque
CPLG Bore with Torque
HP / 100 Rating Typical
Size Standard Rating D
RPM (lb.-in.) A BF CB E G O T W
Keyway (lb.-in.) Minimum
(Ref.)
1 1 5/8 12 7500 15000 4 9/16 1 17/32 1/2 1 11/16 3 1/16 2 3/8 3/8 7 2 3/4
1 1/2 2 1/4 27 17000 34000 6 1 25/32 5/8 1 15/16 3 15/16 3 1/8 1/2 8 3 1/4
2 2 7/8 50 31500 63000 7 2 11/32 5/8 2 7/16 4 15/16 4 1/2 9 5/8 3 3/4
2 1/2 3 1/2 90 56700 113400 8 3/8 2 11/16 3/4 3 1/32 5 7/8 4 7/8 9/16 11 3/8 4 3/4
3 4 160 101000 202000 9 7/16 3 9/32 3/4 3 19/32 6 7/8 5 5/8 9/16 12 5/8 5 3/4
3 1/2 4 5/8 235 148000 296000 11 3 27/32 1 4 3/16 7 29/32 6 1/2 3/4 14 5/8 6 3/4
4 5 1/2 375 236000 472000 12 4 3/8 1 4 3/4 9 1/4 7 3/4 3/4 16 7/8 7 3/ 4
4 1/2 6 1/4 505 318000 636000 13 5/8 4 27/32 1 1/16 5 5/16 10 3/ 8 8 1/2 3/4 18 8 3/4
5 7 1/8 700 441000 882000 15 5/16 5 17/32 1 5/16 6 1/32 11 9/16 9 1/2 1 19 3/8 9 3/4
5 1/2 8 920 580000 1160000 16 3/4 6 7/32 1 5/16 6 29/32 12 11/16 10 1/2 1 20 7/8 10 1/4
6 8 7/8 1205 759000 1518000 18 6 21/32 1 5/16 7 13/32 13 7/8 11 1/2 1 23 11 1/4
7 10 3/8 1840 1160000 2320000 20 3/4 7 11/16 1 3/8 8 11/16 16 1/16 13 1/2 1 26 12 1/4
174
Brake Disc Couplings
Series H Brake Disc couplings use standard full flex
couplings with longer flange bolts and an extra gasket.
Brake Discs are piloted to the outside diameter of the
sleeve flanges. These couplings are also available in flex
rigid configurations and with hubs bore for AISE mill
motors.
Standard brake discs are made from carbon steel, but

are also commonly supplied in ductile iron for better heat
dissipation when braking. The user should specify the
required brake disc material when ordering. The brake
disc dimensions shown below are for reference and can
be modified to suit your particular application.
Brake discs may also be used with the FAST’S® full flex,
flex rigid, mill motor, and double engagement designs.
Consult KOP-FLEX for any special requirements.
Coupling Dimensions (inches) Brake Disc Dimensions (inches)

Maximum Peak
Rating Torque
CPLG Bore with Torque
HP / 100 Rating Typical Typical Typical
Size Standard Rating
RPM (lb.-in.) A BF CB E G O T S D W
Key (lb.-in.)
(Ref.) (Ref.) (Ref.)
1 1 5/8 12 7500 15000 4 9/16 1 17/32 1/2 1 11/16 3 1/16 2 3/8 3/8 8 14 3/8
1 1/2 2 1/4 27 17000 34000 6 1 25/32 5/8 1 15/16 3 15/16 3 1/8 1/2 8 14, 18 1/2
2 2 3/4 50 31500 63000 7 2 11/32 5/8 2 7/16 4 15/16 4 1/2 10 14, 16, 18 1/2
2 1/2 3 1/2 90 56700 113400 8 3/8 2 11/16 3/4 3 1/32 5 7/8 4 7/8 9/16 12 16, 18, 20 1/4 9/16
3 4 160 101000 202000 9 7/16 3 9/32 3/4 3 19/32 6 7/8 5 5/8 9/16 14 1/4 16, 18, 20 1/4 9/16
3 1/2 4 1/2 235 148000 296000 11 3 27/32 1 4 3/16 7 29/32 6 1/2 3/4 14 1/4 20 1/4, 28 3/4
4 5 1/2 375 236000 472000 12 4 3/8 1 4 3/4 9 1/4 7 3/4 3/4 14 1/4 20 1/4, 28 3/4
4 1/2 6 505 318000 636000 13 5/8 4 27/32 1 1/16 5 5/16 10 3/8 8 1/2 3/4 22 28, 32 3/4
5 6 7/8 700 441000 882000 15 5/16 5 17/32 1 5/16 6 1/32 11 9/16 9 1/2 1 22 28, 32 1
5 1/2 7 3/4 920 580000 1160000 16 3/4 6 7/32 1 5/16 6 5/8 12 11/16 10 1/2 1 22 28, 32 1
6 8 5/8 1205 759000 1518000 18 6 21/32 1 5/16 7 13/32 13 7/8 11 1/2 1 22 32, 36 1
7 10 3/8 1840 1160000 2320000 20 3/4 7 11/16 1 3/8 8 11/16 16 1/16 13 1/2 1 22 32, 36 1
For More
Information
175
Alloy Steel Full Flex
Alloy Steel Series H couplings, size 8 through 30,
are identical in design to the standard couplings,
except that the material of the hubs and sleeves are
alloy steel for higher torque capacity. Grade 8 bolts
are substituted for higher strength as well. The bolts
are special with respect to body length, thread length,
and bolt body tolerance. All end rings are gasketed
and are bolted to the sleeves which can be easily
removed for inspection of the gear teeth without
removing the hub from the shaft. Hubs may be
installed in the standard position, or with one or both
hubs reversed to accommodate various shaft
separations. Sizes 8 through 30 are available in
exposed bolt only.
Maximum Dimensions
Coupling Bore with Rating Torque Rating PeaRkaT orque Maximum Weight with
ting Speed Solid Hubs
Size Standard Key H P / 1 0 0 R P M (l b . -i n . x 1 0 0 0 ) (lb.-in. x 1000) (RPM) (lb.) A B C C1 CW E O
8 10 3/4 4179 2633 7899 1750 1430 23 1/4 19 1/2 3/8 5 9/16 10 3/4 9 13/16 14
9 11 3/4 5938 3741 11223 1625 2000 26 21 3/4 1/2 6 1/4 12 10 7/8 15 1/2
10 13 8167 5145 15435 1500 2670 28 24 1/2 7 1/8 13 3/4 12 17 1/2
11 15 10848 6834 20502 1375 3520 30 1/2 26 1/4 1/2 7 7/8 15 1/4 13 1/8 19 1/2
12 16 1/4 13489 8498 25494 1250 4450 33 27 3/4 1/2 8 1/8 15 3/4 13 7/8 21 1/2
13 17 1/2 16929 10665 31995 1125 5410 35 3/4 29 1/2 3/4 8 7/16 16 1/8 14 5/8 23
14 18 3/4 20779 13091 39273 1000 6600 38 31 1/4 3/4 9 17 1/4 15 1/2 25
15 20 3/4 25262 15915 47745 875 8040 40 1/2 33 1/8 3/4 9 7/16 18 1/8 16 1/2 27
16 22 30208 19031 57093 750 9680 43 35 1 9 7/8 18 3/4 17 3/8 29
18 25 1/4 39584 24938 74814 500 12500 47 1/4 36 1/8 1 10 1/4 19 1/2 18 33
20 27 1/4 54000 34020 102060 400 17900 53 1/2 42 3/8 1 12 3/8 23 3/4 21 1/8 36 1/2
22 30 71456 45017 135051 300 23300 59 46 1 13 3/4 26 1/2 23 40
24 33 1/4 79462 50061 150183 200 30300 64 1/4 49 1/2 1 15 29 24 3/4 44 1/2
26 36 3/4 99449 62653 187959 200 37700 68 1/2 53 1 15 5/8 30 1/4 26 1/2 48 1/2
28 40 123703 77933 233799 200 45200 73 3/4 54 1/4 1 15 7/8 30 3/4 27 1/8 52 1/2
30 43 1/2 150637 94901 284703 200 52700 78 55 1/4 1 15 7/8 30 3/4 27 5/8 56 1/2
Center End
Coupling Flange Ring
Size Bolt Quantity Size & Bolt
Quantity Size & Length
Circle (each) Length Circle
8 16 1 1/8 x 4 1/8 20 3/4 10 1/2 x 2 19 3/8
9 18 1 1/4 x 4 1/2 23 1/4 12 5/8 x 2 3/16 21 3/4
10 18 1 3/8 x 5 3/8 25 1/4 12 5/8 x 2 3/16 23 7/8
11 18 1 1/2 x 5 7/8 27 1/2 12 5/8 x 2 3/16 26 1/16
12 18 1 1/2 x 6 1/8 30 12 3/4 x 2 9/16 28 5/16
13 18 1 5/8 x 6 3/8 32 1/4 12 3/4 x 2 9/16 30 1/2

14 18 1 3/4 x 6 5/8 34 1/2 14 3/4 x 2 9/16 32 5/8
ONE HUB REVERSED
15 20 1 3/4 x 6 5/8 36 3/4 14 7/8 x 2 7/8 35
16 20 2 x 7 3/8 39 14 7/8 x 2 7/8 37 1/8
18 22 2 x 7 3/8 43 1/4 14 7/8 x 2 7/8 41 3/8
20 22 2 1/4 x 7 5/8 48 3/4 16 1 x 3 5/8 46 1/4

22 22 2 1/2 x 8 1/8 53 1/2 16 1 x 3 5/8 50 3/4
24 22 2 3/4 x 8 7/8 58 1/4 16 1 1/8 x 4 1/8 55
26 24 2 3/4 x 8 7/8 62 1/2 18 1 1/8 x 4 1/8 59 1/4
28 22 3 x 9 5/8 67 1/4 16 1 1/4 x 4 1/4 63 11/16
30 24 3 x 9 5/8 71 1/2 18 1 1/4 x 4 1/4 68 3/16
TWO HUBS REVERSED

176
Alloy Steel Spacer Coupling
Alloy Steel Series H spacer couplings are available for
applications with extended shaft separations and offer
the same higher torque ratings of the close coupled alloy
steel design. Bolt on end rings are supplied to allow
inspection of the hub teeth without removing the hub
from the shaft.
Dimensions
Maximum Torque Peak Torque Maximum
Coupling Rating
Bore with Rating Rating Speed
Size HP/100 RPM A BF E O
Std. Key (lb.-in. x 1000) (lb.-in. x 1000) (RPM)
8 10 3/4 4179 2633 7899 1750 23 1/4 4 3/8 9 13/16 14

9 11 3/4 5938 3741 11223 1625 26 4 7/8 10 7/8 15 1/2
10 13 8167 5145 15435 1500 28 5 1/8 12 17 1/2
11 15 10848 6834 20502 1375 30 1/2 5 7/16 13 1/8 19 1/2
12 16 1/4 13489 8498 25494 1250 33 6 13 7/8 21 1/2
13 17 1/2 16929 10665 31995 1125 35 3/4 6 11/16 14 5/8 23

14 18 3/4 20779 13091 39273 1000 38 6 15/16 15 1/2 25
15 20 3/4 25262 15915 47745 875 40 1/2 7 17/32 16 1/2 27
16 22 30208 19031 57093 750 43 8 7/32 17 3/8 29
18 25 1/4 39584 24938 74814 500 47 1/4 8 13/32 18 33
20 27 1/4 54000 34020 102060 400 53 1/2 9 3/8 21 1/8 36 1/2

22 30 71456 45017 135051 300 59 9 13/16 23 40
24 33 1/4 79462 50061 150183 200 64 1/4 10 1/4 24 3/4 44 1/2
26 36 3/4 99449 62653 187959 200 68 1/2 11 3/8 26 1/2 48 1/2
28 40 123703 77933 233799 200 73 3/4 11 3/4 27 1/8 52 1/2
30 43 1/2 150637 94901 284703 200 78 12 3/16 27 5/8 56 1/2
Shear spacer designs are used where there is a need to prevent large peak torques from being transmitted back
through the drive train. This design acts as a fuse to prevent damage to large, expensive drive train equipment due
to wrecks or cobbles in the mill stands.
Combination Spacer Design with Shear Shear Spacer for Torque Overload Release
177
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178

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What are some of the machines mentioned in the document text?

What are some of the machines mentioned in the document text?

What does the document discuss regarding balancing requirements for couplings?

What does the document discuss regarding balancing requirements for couplings?

Series H

Large Bore Capacity, Index:

The Series H Advantages:

The lube seal is a Buna-N O-ring to help retain grease and

Series H couplings of Size 8 to 30 are designed for ±1/2°

Series H couplings can be supplied in full-flex, flex-rigid,

Straight Tooth Sizes 8 - 30

Dynamic Balancing Guide

Maximum Mo aximum Weight

4 8 3/4 x 3 3/8 11 14 5/8 x 1 5/8 10 5/8

13 18 1 5/8 x 6 3/8 32 1/4 12 3/4 x 2 9/16 30 1/2

20 22 2 1/4 x 7 5/8 48 3/4 16 1 x 3 5/8 46 1/4

TWO HUBS REVERSED

Full Flex Coupling Fastener Set Sleeve Flex Hub

4 4H EB FF 180 4H EB FF FB 4 EB FS 5 4H EB SLEEVE 41 4H FHUB 47 4H FHUB FB

Coupling Type SB (Shrouded Bolts) Part Numbers

Coupling Type (Exposed Bolts) Part Numbers

Full-flex spacer couplings are used for 4 bearing

Type EB exposed bolt spacers and Type SB shrouded

Spacer length, L, is calculated by subtracting the

LEF Spacer Couplings

Limited End Float (LEF) spacer couplings are used for

Spacer length, LLEF, is calculated by subtracting the LEF

Coupling sizes 8 - 30 are also available as

Spacers for coupling sizes 4 - 30 are non-stock

Note: Spacer part number references the shaft

6 6H EB FR 504 6H EB FR FB 6 EB RHUB 250 6 EB RHUB FB

3 1/2 3 1/2H SB FR 126 3 1/2H SB FR FB 3 1/2 SB RHUB 65 3 1/2 SB RHUB FB

13 13H EB FR 13H EB MRHUB 13H EB FRHUB

20 20H EB FR 20H EB MRHUB 20H EB FRHUB

Maximum Bore Peak Weight

The standard “composite” mill motor hub

4 5 1/2 375 236000 472000 5260 219 12 1/2 8 3/4 4 3/4

See next page for additional dimensions.

MILL MOTOR COMPOSITE HUB MILL MOTOR COMPOSITE HUB

TAPERED BORES For Tapered Shafts, with or without locknut,

Dimensions LEF DiscÀ

4 3/16 12 1/2 8 3/4 3/64 13/32 4 3/4 5/16 4H LEFD 2

Vertical Coupling Size 1-7

Dimensions Vertical PlateÀ Fastener Set

3 1/2 11 1/8 7/16 3/16 3 1/2H EB VP 4 3 1/2 EB VSFS 5

6 18 5/32 9/16 1/4 6H EB VP 19 6 EB VSFS 14

For Flex-Rigid arrangements used in floating shaft couplings, a

FLOATING SHAFT ASSEMBLY

Total SlideÀ Dimensions

4 4H EB SSFF 170 4H EB SSFF FB 4 EB SP 7 4 EB VSFS 5 4H EB SSLEEVE 41 4H FHUB 44

* Exposed bolts are standard for all sizes.

Standard brakewheels are made from carbon steel, but

Brakewheels may also be used with the FAST’S® full

Standard brake discs are made from carbon steel, but

Coupling Dimensions (inches) Brake Disc Dimensions (inches)

13 18 1 5/8 x 6 3/8 32 1/4 12 3/4 x 2 9/16 30 1/2

20 22 2 1/4 x 7 5/8 48 3/4 16 1 x 3 5/8 46 1/4

TWO HUBS REVERSED

8 10 3/4 4179 2633 7899 1750 23 1/4 4 3/8 9 13/16 14

13 17 1/2 16929 10665 31995 1125 35 3/4 6 11/16 14 5/8 23