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Shaft Diameter
OD
Component
Overall Length
For Rotary Motion
Flexible Shaft Coupling Trade Size
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RoHS
Export Control Classification Number (ECCN)
DFARS Specialty Metals
Maximum Rotation Speed
REACH
Hub Material
Precision Spider Couplings
 |
Position shafts and handle misalignment on precision motors, pumps, and other equipment that requires highly controlled movements. These couplings have a hard, rubber spider to fully transfer torque from one shaft to the other (zero backlash). They're also known as precision jaw couplings. Choose components with the same trade size to ensure they'll fit together.
Hubs
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The metal body mounts onto shafts to transmit torque from one shaft to the other through the flexible center.
Aluminum—Lightweight and corrosion resistant.
Clamp-On Shaft Mount—Grip shafts evenly without marring them and hold tighter than set screws. Tighten the clamping screws to secure.
Set-Screw Shaft Mount—Screws dig into your shaft for a secure hold.
OD | Shaft Coupling Trade Size | Overall Lg. | Shaft Mount Type | Choose a Shaft Dia. | Each | |||
|---|---|---|---|---|---|---|---|---|
Round | ||||||||
Aluminum | ||||||||
| 3/4" | 12/19 | 1 7/64" | Clamp On | 3/16", 1/4", 5/16", 4 mm, 5 mm, 6 mm, 7 mm, 8 mm | 9845T1 | 000000 | ||
| 1" | 16/25 | 1 13/32" | Clamp On | 1/4", 5/16", 3/8", 1/2", 6 mm, 7 mm, 8 mm, 9 mm | 9845T2 | 00000 | ||
| 1 1/4" | EK1 10 | 1 3/8" | Set Screw | 1/4" | 9939T105 | 00000 | ||
| 1 5/16" | 21/33 | 1 13/16" | Clamp On | 5/16", 3/8", 1/2", 5/8", 8 mm, 9 mm | 9845T3 | 00000 | ||
| 1 5/8" | 26/41 | 2 7/64" | Clamp On | 3/8", 1/2", 5/8", 3/4" | 9845T65 | 00000 | ||
| 2" | 32/51 | 2 13/32" | Clamp On | 1/2", 5/8", 3/4", 1" | 9845T66 | 000000 | ||
| 2 1/4" | 36/57 | 3 13/64" | Clamp On | 1/2", 5/8", 3/4", 1" | 9845T67 | 000000 | ||
| 15 mm | 10/15 | 21 mm | Set Screw | 4 mm, 5 mm, 6 mm | 9939T31 | 00000 | ||
| 15 mm | 10/15 | 21.8 mm | Clamp On | 3 mm, 4 mm, 5 mm, 6 mm | 9845T51 | 00000 | ||
| 19 mm | 12/19 | 27 mm | Set Screw | 5 mm, 6 mm, 7 mm, 8 mm | 9939T32 | 00000 | ||
| 25 mm | 16/25 | 35 mm | Set Screw | 6 mm, 8 mm, 10 mm, 11 mm, 12 mm | 9939T33 | 00000 | ||
| 25.4 mm | 16/25 | 35.3 mm | Clamp On | 10 mm, 11 mm, 12 mm | 9845T52 | 00000 | ||
| 33 mm | 21/33 | 44 mm | Set Screw | 8 mm, 14 mm | 9939T34 | 00000 | ||
| 33.3 mm | 21/33 | 44.5 mm | Clamp On | 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm | 9845T53 | 00000 | ||
| 41 mm | 26/41 | 53 mm | Set Screw | 12 mm, 14 mm, 18 mm, 20 mm | 9939T35 | 00000 | ||
| 41.3 mm | 26/41 | 53 mm | Clamp On | 10 mm, 11 mm, 12 mm, 13 mm, 14 mm, 15 mm, 16 mm, 17 mm, 18 mm, 19 mm, 20 mm | 9845T54 | 00000 | ||
| 50.8 mm | 32/51 | 61 mm | Clamp On | 12 mm, 15 mm, 19 mm, 22 mm, 24 mm, 25 mm | 9845T55 | 00000 | ||
| 57.2 mm | 36/57 | 80 mm | Clamp On | 16 mm, 19 mm, 20 mm, 22 mm, 25 mm, 30 mm, 32 mm | 9845T56 | 000000 | ||
Keyed | ||||||||
Aluminum | ||||||||
| 1" | 16/25 | 1 13/32" | Clamp On | 10 mm, 11 mm, 12 mm | 9845T63 | 00000 | ||
| 1 1/4" | EK1 10 | 1 3/8" | Set Screw | 3/8", 1/2", 5/8" | 9939T111 | 00000 | ||
| 1 5/16" | 21/33 | 1 13/16" | Clamp On | 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm | 9845T64 | 00000 | ||
| 1 5/8" | 26/41 | 2 7/64" | Clamp On | 10 mm, 11 mm, 12 mm, 14 mm, 15 mm, 16 mm, 20 mm | 9845T4 | 00000 | ||
| 1 21/32" | EK1 20 | 2 39/64" | Set Screw | 3/8", 1/2", 5/8", 3/4" | 9939T112 | 00000 | ||
| 2" | 32/51 | 2 13/32" | Clamp On | 12 mm, 14 mm, 15 mm, 16 mm, 20 mm, 25 mm | 9845T5 | 000000 | ||
| 2 13/64" | EK1 60 | 3 5/64" | Set Screw | 5/8", 3/4", 1" | 9939T113 | 000000 | ||
| 2 1/4" | 36/57 | 3 13/64" | Clamp On | 14 mm, 15 mm, 16 mm, 20 mm, 25 mm, 30 mm | 9845T6 | 000000 | ||
| 2 39/64" | EK1 150 | 3 35/64" | Set Screw | 3/4", 1", 1 1/4", 1 1/2" | 9939T114 | 000000 | ||
| 25 mm | 16/25 | 35 mm | Set Screw | 10 mm, 11 mm | 9939T38 | 00000 | ||
| 25.4 mm | 16/25 | 35.3 mm | Clamp On | 8 mm, 9 mm | 9845T57 | 00000 | ||
| 33 mm | 21/33 | 44 mm | Set Screw | 14 mm, 16 mm | 9939T39 | 00000 | ||
| 33.3 mm | 21/33 | 44.5 mm | Clamp On | 8 mm, 9 mm | 9845T58 | 00000 | ||
| 41 mm | 26/41 | 53 mm | Set Screw | 12 mm, 14 mm, 16 mm, 20 mm | 9939T41 | 00000 | ||
| 41.3 mm | 26/41 | 53 mm | Clamp On | 13 mm, 17 mm, 18 mm, 19 mm | 9845T59 | 00000 | ||
| 50 mm | 32/51 | 61 mm | Set Screw | 18 mm, 20 mm, 24 mm | 9939T42 | 000000 | ||
| 50.8 mm | 32/51 | 61 mm | Clamp On | 17 mm, 19 mm, 22 mm, 24 mm | 9845T61 | 000000 | ||
| 57 mm | 36/57 | 80 mm | Set Screw | 14 mm, 20 mm, 24 mm, 28 mm | 9939T43 | 000000 | ||
| 57.2 mm | 36/57 | 80 mm | Clamp On | 19 mm, 22 mm, 24 mm, 28 mm | 9845T62 | 000000 | ||
Spiders
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A flexible center fits between hubs to enable torque transfer and damp vibration.
Polyurethane Rubber—Provide a balance of stiffness and moderate vibration damping. Higher-durometer spiders are more rigid for more precise positioning, but they absorb less vibration.
Misalignment Capability | |||||||||
|---|---|---|---|---|---|---|---|---|---|
For Hub OD | Shaft Coupling Trade Size | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Each | |||
Durometer 80A (Hard) Polyurethane Rubber | |||||||||
| 1 1/4" | EK1 10 | 10,000 | 50 | 0.011" | 1.2° | 9939T13 | 00000 | ||
| 1 21/32" | EK1 20 | 9,000 | 105 | 0.011" | 1.2° | 9939T16 | 0000 | ||
| 2 13/64" | EK1 60 | 8,000 | 305 | 0.011" | 1.2° | 9939T19 | 00000 | ||
| 2 39/64" | EK1 150 | 7,000 | 750 | 0.011" | 1.2° | 9939T23 | 00000 | ||
Durometer 85A (Hard) Polyurethane Rubber | |||||||||
| 3/4", 19 mm | 12/19 | 8,000 | 10 | 0.005" | 1° | 9845T13 | 00000 | ||
| 1", 25 mm, 25.4 mm | 16/25 | 8,000 | 30 | 0.006" | 1° | 9845T16 | 00000 | ||
| 1 5/16", 33 mm, 33.3 mm | 21/33 | 8,000 | 36 | 0.006" | 1° | 9845T19 | 00000 | ||
| 15 mm | 10/15 | 8,000 | 4.8 | 0.005" | 1° | 9845T487 | 00000 | ||
Durometer 92A (Extra Hard) Polyurethane Rubber | |||||||||
| 3/4", 19 mm | 12/19 | 8,000 | 18 | 0.004" | 0.9° | 9845T12 | 00000 | ||
| 1", 25 mm, 25.4 mm | 16/25 | 8,000 | 58 | 0.005" | 0.9° | 9845T15 | 00000 | ||
| 1 5/16", 33 mm, 33.3 mm | 21/33 | 8,000 | 70 | 0.005" | 0.9° | 9845T18 | 00000 | ||
| 1 5/8", 41 mm, 41.3 mm | 26/41 | 8,000 | 190 | 0.006" | 0.9° | 9845T22 | 00000 | ||
| 2", 50 mm, 50.8 mm | 32/51 | 8,000 | 440 | 0.006" | 0.9° | 9845T25 | 00000 | ||
| 2 1/4", 57 mm, 57.2 mm | 36/57 | 8,000 | 570 | 0.005" | 0.9° | 9845T27 | 00000 | ||
| 15 mm | 10/15 | 8,000 | 10 | 0.004" | 0.9° | 9845T486 | 00000 | ||
Durometer 98A (Extra Hard) Polyurethane Rubber | |||||||||
| 3/4", 19 mm | 12/19 | 8,000 | 30 | 0.003" | 0.8° | 9845T11 | 00000 | ||
| 1", 25 mm, 25.4 mm | 16/25 | 8,000 | 150 | 0.003" | 0.8° | 9845T14 | 00000 | ||
| 1 1/4" | EK1 10 | 10,000 | 220 | 0.011" | 1° | 9939T11 | 00000 | ||
| 1 5/16", 33 mm, 33.3 mm | 21/33 | 8,000 | 170 | 0.003" | 0.8° | 9845T17 | 00000 | ||
| 1 5/8", 41 mm, 41.3 mm | 26/41 | 8,000 | 330 | 0.004" | 0.8° | 9845T21 | 00000 | ||
| 1 21/32" | EK1 20 | 9,000 | 300 | 0.011" | 1° | 9939T14 | 00000 | ||
| 2", 50 mm, 50.8 mm | 32/51 | 8,000 | 550 | 0.005" | 0.8° | 9845T24 | 00000 | ||
| 2 13/64" | EK1 60 | 8,000 | 1,060 | 0.011" | 1° | 9939T17 | 00000 | ||
| 2 1/4", 57 mm, 57.2 mm | 36/57 | 8,000 | 820 | 0.004" | 0.8° | 9845T26 | 00000 | ||
| 2 39/64" | EK1 150 | 7,000 | 2,830 | 0.011" | 1° | 9939T21 | 00000 | ||
| 15 mm | 10/15 | 8,000 | 16 | 0.002" | 0.8° | 9845T485 | 00000 | ||
Durometer 64D (Extra Hard) Polyurethane Rubber | |||||||||
| 1 1/4" | EK1 10 | 10,000 | 280 | 0.011" | 0.8° | 9939T12 | 0000 | ||
| 1 21/32" | EK1 20 | 9,000 | 370 | 0.011" | 0.8° | 9939T15 | 0000 | ||
| 2 13/64" | EK1 60 | 8,000 | 1,320 | 0.011" | 0.8° | 9939T18 | 00000 | ||
| 2 39/64" | EK1 150 | 7,000 | 3,540 | 0.011" | 0.8° | 9939T22 | 00000 | ||
Spider Couplings
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With two hubs gripping a rubbery spider in the center, these couplings damp vibration and transfer torque while flexing to handle misaligned shafts. The metal hubs never touch each other, so there's no need for lubrication. Also known as Lovejoy® couplings. For a complete coupling, select two hubs and one spider or two hubs, one split spider, and one retaining ring. Choose components with the same trade size to ensure they'll fit together.
Hubs
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Spiders
 |
Misalignment Capability | |||||||||
|---|---|---|---|---|---|---|---|---|---|
For Hub OD | Shaft Coupling Trade Size | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Each | |||
Polyurethane Rubber | |||||||||
| 9/16" | GS 7 | 27,000 | 21 | 0.004" | 1° | 2401K81 | 00000 | ||
| 51/64" | GS 9 | 19,000 | 53 | 0.004" | 1° | 2401K83 | 0000 | ||
| 63/64" | GS 12 | 15,200 | 89 | 0.004" | 1° | 2401K85 | 00000 | ||
| 1 3/16" | GS 14 | 12,700 | 130 | 0.004" | 1° | 2401K87 | 0000 | ||
| 1 3/4" | L075 | 3,600 | 135 | 0.015" | 1° | 2410K11 | 00000 | ||
| 2 7/64" | L090, L095 | 3,600 | 210 | 0.015" | 1° | 2410K13 | 00000 | ||
| 2 17/32", 2 35/64" | L099, L100 | 3,600 | 475 | 0.015" | 1° | 2410K15 | 00000 | ||
| 3 21/64" | L110 | 3,600 | 1,185 | 0.015" | 1° | 2410K17 | 000000 | ||
| 3 3/4" | L150 | 3,600 | 1,860 | 0.015" | 1° | 2410K19 | 000000 | ||
Split Spiders
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Unlike standard spiders, you can install these without using tools, removing hubs, or realigning shafts. Hold them in place with a retaining ring.
Polyurethane Rubber—Provide fair vibration damping and tear resistance.
Misalignment Capability | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
For Hub OD | Shaft Coupling Trade Size | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Each | |||
Polyurethane Rubber | ||||||||||
| 2 7/64" | L090, L095 | 9,200 | 670 | 0.03" | 2° | -30 to 200 | 2393K33 | 000000 | ||
| 2 35/64" | L099, L100 | 7,700 | 1,110 | 0.03" | 2° | -30 to 200 | 2393K34 | 000000 | ||
| 3 21/64" | L110 | 5,900 | 2,180 | 0.03" | 2° | -30 to 200 | 2393K35 | 000000 | ||
