About Shaft Couplings
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Set Screw Flexible Shaft Couplings
Each hub includes a set screw (unless noted), which bites into your shaft to hold the coupling in place. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.
A complete coupling consists of two hubs and one spider, or two hubs, one split spider, and one retaining ring (all components sold separately). Split spiders are easier to install and replace than standard spiders because there’s no need for tools or removing your hubs. Twist-lock them in place using a retaining ring.
Stainless steel hubs have excellent corrosion resistance.
Buna-N spiders provide good vibration damping and chemical resistance. Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Buna-N Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | ||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
13/16" | 5/8" | Round | Forward/Reverse, Start/Stop | 000000 | 00000 | 31,000 | 3 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
1 23/32" | 1 5/64" | Round | Forward/Reverse, Start/Stop | 0000000 | 0000 | 18,000 | 26 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 | |
1 23/32" | 1 5/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 0000 | 18,000 | 26 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 | |
1 63/64" | 1 23/64" | Round | Forward/Reverse, Start/Stop | 00000000 | 00000 | 14,000 | 43 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 | |
1 63/64" | 1 23/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 14,000 | 43 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 | |
2 1/8" | 1 3/4" | Round | Forward/Reverse, Start/Stop | 00000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
2 5/32" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
2 27/32" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
3 31/64" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 5,000 | 790 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
4 1/2" | 3 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
4 7/8" | 4 1/2" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,000 | 1,725 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
5 11/32" | 5" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 4,200 | 2,340 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Buna-N Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
2 1/8" | 1 3/4" | Round | Forward/Reverse, Start/Stop | 1/4" | 00000000 | 000000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 000000 |
2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,000 | 790 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Buna-N Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg., mm | OD, mm | For Shaft Type | For Motion Type | For Shaft Dia., mm | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
*Not drilled or tapped for set screw. Set screw not included. | |||||||||||||
21 | 16 | Round | Forward/Reverse, Start/Stop | 00000000 | 00000 | 31,000 | 3 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
44 | 27 | Round | Forward/Reverse, Start/Stop | 00000000 | 0000 | 18,000 | 26 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 | |
51 | 35 | Keyed | Forward/Reverse, Start/Stop | 17 | 00000000 | 00000 | 14,000 | 43 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 |
54 | 45 | Keyed | Forward/Reverse, Start/Stop | 10 | 00000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
54 | 45 | Keyed | Forward/Reverse, Start/Stop | 11 | 0000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
54 | 54 | Keyed | Forward/Reverse, Start/Stop | 10 | 00000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
54 | 54 | Keyed | Forward/Reverse, Start/Stop | 25 | 00000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
64 | 54 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
73 | 65 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
89 | 65 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
108 | 85 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 5,000 | 790 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
115 | 96 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
124 | 115 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,000 | 1,725 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | |
137 | 127 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 4,200 | 2,340 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Hytrel Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | ||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
1 23/32" | 1 5/64" | Round | Forward/Reverse, Start/Stop | 0000000 | 00000 | 18,000 | 50 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
1 23/32" | 1 5/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 0000 | 18,000 | 50 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
1 63/64" | 1 23/64" | Round | Forward/Reverse, Start/Stop | 00000000 | 00000 | 3,600 | 110 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
1 63/64" | 1 23/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 110 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 1/8" | 1 3/4" | Round | Forward/Reverse, Start/Stop | 00000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 5/32" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 27/32" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
3 31/64" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 2,265 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
4 1/2" | 3 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
4 7/8" | 4 1/2" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,000 | 4,680 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
5 11/32" | 5" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 4,200 | 6,225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Hytrel Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
2 1/8" | 1 3/4" | Round | Forward/Reverse, Start/Stop | 1/4" | 00000000 | 000000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 2,265 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Hytrel Rubber Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg., mm | OD, mm | For Shaft Type | For Motion Type | For Shaft Dia., mm | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
*Not drilled or tapped for set screw. Set screw not included. | |||||||||||||
44 | 27 | Round | Forward/Reverse, Start/Stop | 00000000 | 00000 | 18,000 | 50 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
51 | 35 | Keyed | Forward/Reverse, Start/Stop | 17 | 00000000 | 00000 | 3,600 | 110 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
54 | 45 | Keyed | Forward/Reverse, Start/Stop | 10 | 00000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
54 | 45 | Keyed | Forward/Reverse, Start/Stop | 11 | 0000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
54 | 54 | Keyed | Forward/Reverse, Start/Stop | 10 | 00000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
54 | 54 | Keyed | Forward/Reverse, Start/Stop | 25 | 00000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
64 | 54 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 | |
73 | 65 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
89 | 65 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
108 | 85 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 2,265 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
115 | 96 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
124 | 115 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,000 | 4,680 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | |
137 | 127 | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 4,200 | 6,225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Polyurethane Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | ||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
2 1/8" | 1 3/4" | Round | Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 135 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 | |
2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 135 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
2 5/32" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
2 27/32" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
3 31/64" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 1,185 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 | |
4 1/2" | 3 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 1,860 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
Polyurethane Spiders | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | ||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
2 1/8" | 1 3/4" | Round | Forward/Reverse, Start/Stop | 1/4" | 00000000 | 000000 | 3,600 | 135 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
2 1/8" | 1 3/4" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 3,600 | 135 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 3,600 | 1,185 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
Polyurethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | 347 Stainless Steel Retaining Rings | |||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | Each | |||
2 5/32" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 0000000 | 000000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 | |
2 5/32" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 | |
2 1/2" | 2 7/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 | |
2 27/32" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
2 27/32" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 | |
3 31/64" | 2 35/64" | Round | Forward/Reverse, Start/Stop | 7/16" | 00000000 | 00000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 00000 | 5,900 | 2,180 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 |
Polyurethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | 347 Stainless Steel Retaining Rings | |||||||||||||
Overall Lg. | OD | For Shaft Type | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | Each | |||
2 1/2" | 2 7/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 0000000 | 9,200 | 670 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 | |
3 31/64" | 2 35/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 | |
4 7/32" | 3 21/64" | Keyed | Forward/Reverse, Start/Stop | 0000000 | 000000 | 5,900 | 2,180 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 |
High-Torque Set Screw Flexible Shaft Couplings
The thick split spider on these couplings takes on twice as much torque as standard split spiders, while a set screw holds the hubs in place on your shaft. Also known as jaw couplings, use them to connect motors to pumps, mixers, and other high-torque equipment. You don’t need to lubricate them.
For a complete coupling, you’ll need two hubs, one split spider, and a split spider cover (all sold separately).
Hubs attach to the end of your shaft.
Split spiders cushion between the two hubs to dampen vibration, reduce shocks, and handle shaft misalignment, extending the life of bearings, seals, and motors. You can replace them without having to remove the hubs or move your shaft and equipment around, which reduces the risk of needing to realign the shaft. Spiders with medium-soft hardness are the most commonly used and are good for applications that start, stop, and reverse often. Those with medium hardness handle higher torque than those with medium-soft hardness, but they don’t reduce vibration as well.
Split spider covers hold the spider in place.
For technical drawings and 3-D models, click on a part number.
Urethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | 303 Stainless Steel Split Spider Covers | |||||||||||||
Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Color | Each | Each | |||
2 13/16" | 2" | Forward/Reverse, Start/Stop | 000000 | 000000 | 12,000 | 375 | 0.02" | 2° | -60° to 212° | Red | 0000000 | 000000 | 0000000 | 000000 |
Urethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | 303 Stainless Steel Split Spider Covers | |||||||||||||
Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Color | Each | Each | |||
2 13/16" | 2" | Forward/Reverse, Start/Stop | 000000 | 000000 | 12,000 | 815 | 0.02" | 2° | -60° to 212° | Blue | 0000000 | 000000 | 0000000 | 000000 |
Urethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | 303 Stainless Steel Split Spider Covers | |||||||||||||
Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Color | Each | Each | |||
2 13/16" | 2" | Forward/Reverse, Start/Stop | 000000 | 000000 | 12,000 | 815 | 0.02" | 2° | -60° to 350° | White | 0000000 | 000000 | 0000000 | 000000 |
Urethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | Steel Split Spider Covers | |||||||||||||
Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Color | Each | Each | |||
3 39/64" | 2 5/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 9,000 | 1,055 | 0.039" | 2° | -60° to 212° | Red | 0000000 | 000000 | 0000000 | 000000 | |
4 29/32" | 3 3/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 7,000 | 3,425 | 0.039" | 2° | -60° to 212° | Red | 0000000 | 00000 | 0000000 | 00000 | |
6 1/16" | 3 33/64" | Forward/Reverse, Start/Stop | 000000 | 000000 | 6,000 | 7,065 | 0.038" | 2° | -60° to 212° | Red | 0000000 | 00000 | 0000000 | 000000 |
Urethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | Steel Split Spider Covers | |||||||||||||
Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Color | Each | Each | |||
3 39/64" | 2 5/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 9,000 | 2,075 | 0.039" | 2° | -60° to 212° | Blue | 0000000 | 000000 | 0000000 | 000000 | |
4 29/32" | 3 3/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 7,000 | 6,460 | 0.039" | 2° | -60° to 212° | Blue | 0000000 | 00000 | 0000000 | 00000 | |
6 1/16" | 3 33/64" | Forward/Reverse, Start/Stop | 000000 | 000000 | 6,000 | 14,000 | 0.038" | 2° | -60° to 212° | Blue | 0000000 | 00000 | 0000000 | 000000 |
Urethane Split Spiders | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Steel Hubs | Misalignment Capability | Steel Split Spider Covers | |||||||||||||
Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Color | Each | Each | |||
3 39/64" | 2 5/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 9,000 | 2,075 | 0.039" | 2° | -60° to 350° | White | 0000000 | 0000000 | 0000000 | 000000 | |
4 29/32" | 3 3/16" | Forward/Reverse, Start/Stop | 000000 | 000000 | 7,000 | 6,460 | 0.039" | 2° | -60° to 350° | White | 0000000 | 000000 | 0000000 | 00000 | |
6 1/16" | 3 33/64" | Forward/Reverse, Start/Stop | 000000 | 000000 | 6,000 | 14,000 | 0.038" | 2° | -60° to 350° | White | 0000000 | 000000 | 0000000 | 000000 |
Clamping Flexible Shaft Couplings
Designed to grip evenly around your shaft, these couplings provide more holding power than set screw couplings without marring the shaft. Tighten the clamping screw to secure. Also known as Lovejoy® couplings, they have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment.
A complete coupling consists of two hubs and one spider (each component sold separately). Hubs are aluminum for light weight and good corrosion resistance.
Hytrel spiders provide fair vibration damping and excellent chemical resistance. Polyurethane spiders provide fair vibration damping and good chemical resistance.
For technical drawings and 3-D models, click on a part number.
Hytrel Rubber Spiders | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
6026 Aluminum Hubs | Misalignment Capability | |||||||||||
O'all Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
7/8" | 9/16" | Forward/Reverse, Start/Stop | 0000000 | 000000 | 27,000 | 42 | 0.002" | 0.8° | -55° to 245° | 0000000 | 000000 | |
1 3/16" | 51/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 19,000 | 105 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 | |
1 11/32" | 63/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 15,200 | 210 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 | |
1 25/64" | 1 3/16" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 12,700 | 280 | 0.002" | 0.8° | -55° to 245° | 0000000 | 00000 |
Polyurethane Spiders | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
6026 Aluminum Hubs | Misalignment Capability | |||||||||||
O'all Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
7/8" | 9/16" | Forward/Reverse, Start/Stop | 0000000 | 000000 | 27,000 | 21 | 0.004" | 1° | -30° to 160° | 0000000 | 00000 | |
1 3/16" | 51/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 19,000 | 53 | 0.004" | 1° | -30° to 160° | 0000000 | 0000 | |
1 11/32" | 63/64" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 15,200 | 89 | 0.004" | 1° | -30° to 160° | 0000000 | 00000 | |
1 25/64" | 1 3/16" | Forward/Reverse, Start/Stop | 0000000 | 00000 | 12,700 | 130 | 0.004" | 1° | -30° to 160° | 0000000 | 0000 |
Metal-Detectable Flexible Shaft Couplings
Safely connect slightly misaligned shafts near food lines—the spider on these couplings contains metal, so it’ll trigger a metal detector if a piece frays off and contaminates your batch. The hubs are made of 303 stainless steel to resist rusting in wet conditions common to food plants. However, these couplings shouldn’t directly touch food, since they’re not FDA compliant. If the spider fails, the hubs will interlock, giving you time to shut down equipment before other components break. You don’t need to lubricate these couplings.
Also called Lovejoy® and jaw couplings, a complete coupling requires two hubs and one spider (all sold separately).
Hubs attach to the end of your shaft and have a set screw that bites into the shaft to hold the coupling in place.
Spiders cushion between the two hubs to reduce shocks and handle minor shaft misalignment. Metal-impregnated Buna-N spiders are the most commonly used and are good for applications that start, stop, and reverse often. They also dampen vibration and resist some chemicals. Metal-impregnated Hytrel spiders run at higher torque and resist chemicals better than Buna-N spiders. However, they shouldn’t be used in applications that start, stop, and reverse frequently.
For technical drawings and 3-D models, click on a part number.
Metal-Impregnated Buna-N Rubber Spiders | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | ||||||||||
O'all Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max.Torque, in.-lbs. | Parallel | Angular | Each | ||
2 1/8" | 1 3/4" | Continuous, Forward/Reverse, Start/Stop | 000000 | 000000 | 3,600 | 80 | 0.015" | 1° | 0000000 | 000000 | |
2 1/2" | 2 1/8" | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 185 | 0.015" | 1° | 000000 | 00000 | |
3 1/2" | 2 17/32" | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 415 | 0.015" | 1° | 0000000 | 00000 | |
54mm | 45mm | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 80 | 0.015" | 1° | 0000000 | 00000 | |
64mm | 54mm | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 185 | 0.015" | 1° | 000000 | 00000 | |
89mm | 65mm | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 415 | 0.015" | 1° | 0000000 | 00000 |
Metal-Impregnated Hytrel Rubber Spiders | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
303 Stainless Steel Hubs | Misalignment Capability | ||||||||||
O'all Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max.Torque, in.-lbs. | Parallel | Angular | Each | ||
2 1/8" | 1 3/4" | Continuous, Forward/Reverse, Start/Stop | 000000 | 000000 | 3,600 | 240 | 0.015" | 1° | 0000000 | 000000 | |
2 1/2" | 2 1/8" | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 565 | 0.015" | 1° | 0000000 | 000000 | |
3 1/2" | 2 17/32" | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 1,245 | 0.015" | 1° | 0000000 | 000000 | |
54mm | 45mm | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 240 | 0.015" | 1° | 0000000 | 00000 | |
64mm | 54mm | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 565 | 0.015" | 1° | 0000000 | 000000 | |
89mm | 65mm | Continuous, Forward/Reverse, Start/Stop | 00000000 | 000000 | 3,600 | 1,245 | 0.015" | 1° | 0000000 | 000000 |
Machinable-Bore Flexible Shaft Couplings
Customize the bore of these flexible couplings to align uncommon shaft sizes as well as shafts that have become undersized from wear or oversized from coatings. Also known as Lovejoy® couplings, these three-piece couplings have a spider-shaped cushion between two hubs to reduce shock and handle minor shaft misalignment. A complete coupling consists of two hubs and one spider (all components sold separately). Fasten to your shaft with set screws (not included), which bite into the shaft for a secure hold. If the spider fails, the hubs will lock together, giving you time to shut down your equipment to prevent component damage and replace the spider. These couplings do not need lubrication.
Buna-N spiders are the most commonly used because they damp the most vibration, making them best for forward/reverse and start/stop motion. They resist oil and chemicals.
Polyurethane spiders can run at a higher torque than Buna-N spiders, but do not offer as much vibration damping. Use them for continuous motion. Similar to Buna-N, they resist oil and chemicals.
Hytrel spiders operate at the highest torque, but are less flexible than Buna-N and polyurethane spiders so they have less misalignment and vibration damping capabilities. Use them for continuous motion. Compared to Buna-N and polyurethane, these have the best oil and chemical resistance.
For technical drawings and 3-D models, click on a part number.
Iron Hubs | Buna-N Spiders | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Set Screw | Misalignment Capability | ||||||||||||||
For Shaft Dia. | Overall Lg. | OD | For Motion Type | Material | Type | Thread Size | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
1/4"-5/8" | 1 23/32" | 1 5/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 18,000 | 26 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
1/4"-3/4" | 1 63/64" | 1 23/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 14,000 | 43 | 0.015" | 1° | -40° to 212° | 0000000 | 0000 |
1/4"-7/8" | 2 1/8" | 1 3/4" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 11,000 | 90 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
1/4"-1" | 2 5/32" | 2 7/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
7/16"-1 1/8" | 2 1/2" | 2 7/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
7/16"-1 3/16" | 2 27/32" | 2 35/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
7/16"-1 3/8" | 3 31/64" | 2 35/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
5/8"-1 5/8" | 4 7/32" | 3 21/64" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 5,000 | 790 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
5/8"-1 7/8" | 4 1/2" | 3 3/4" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 3/8"-16 | 00000000 | 000000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
3/4"-2 1/8" | 4 7/8" | 4 1/2" | Forward/Reverse, Start/Stop | Sintered Iron | Cup Point | 1/2"-13 | 00000000 | 000000 | 5,000 | 1,725 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
3/4"-2 5/8" | 5 11/32" | 5" | Forward/Reverse, Start/Stop | Cast Iron | Cup Point | 1/2"-13 | 00000000 | 000000 | 4,200 | 2,340 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Iron Hubs | Polyurethane Spiders | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Set Screw | Misalignment Capability | ||||||||||||||
For Shaft Dia. | Overall Lg. | OD | For Motion Type | Material | Type | Thread Size | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
1/4"-7/8" | 2 1/8" | 1 3/4" | Continuous | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 000000 | 3,600 | 135 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
1/4"-1" | 2 5/32" | 2 7/64" | Continuous | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
7/16"-1 1/8" | 2 1/2" | 2 7/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
7/16"-1 3/16" | 2 27/32" | 2 35/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
7/16"-1 3/8" | 3 31/64" | 2 35/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
5/8"-1 5/8" | 4 7/32" | 3 21/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 1,185 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
5/8"-1 7/8" | 4 1/2" | 3 3/4" | Continuous | Sintered Iron | Cup Point | 3/8"-16 | 00000000 | 000000 | 3,600 | 1,860 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
Iron Hubs | Hytrel Spiders | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Set Screw | Misalignment Capability | ||||||||||||||
For Shaft Dia. | Overall Lg. | OD | For Motion Type | Material | Type | Thread Size | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
1/4"-5/8" | 1 23/32" | 1 5/64" | Continuous | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 18,000 | 50 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
1/4"-3/4" | 1 63/64" | 1 23/64" | Continuous | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 3,600 | 110 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
1/4"-7/8" | 2 1/8" | 1 3/4" | Continuous | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 3,600 | 225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
1/4"-1" | 2 5/32" | 2 7/64" | Continuous | Sintered Iron | Cup Point | 1/4"-20 | 00000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
7/16"-1 1/8" | 2 1/2" | 2 7/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
7/16"-1 3/16" | 2 27/32" | 2 35/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
7/16"-1 3/8" | 3 31/64" | 2 35/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
5/8"-1 5/8" | 4 7/32" | 3 21/64" | Continuous | Sintered Iron | Cup Point | 5/16"-18 | 00000000 | 00000 | 3,600 | 2,265 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
5/8"-1 7/8" | 4 1/2" | 3 3/4" | Continuous | Sintered Iron | Cup Point | 3/8"-16 | 00000000 | 000000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
3/4"-2 1/8" | 4 7/8" | 4 1/2" | Continuous | Sintered Iron | Cup Point | 1/2"-13 | 00000000 | 000000 | 5,000 | 4,680 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
3/4"-2 5/8" | 5 11/32" | 5" | Continuous | Cast Iron | Cup Point | 1/2"-13 | 00000000 | 000000 | 4,200 | 6,225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Splined-to-Keyed Flexible Shaft Couplings
Connect splined shafts to keyed shafts. These couplings are commonly used to connect hydraulic pumps, compressors, and other heavy duty equipment, which often have splined shafts, to electric motors and other components that often have keyed shafts. They have a splined hub on one side and a keyed hub on the other. A spider cushion in the middle damps vibration, absorbs shock loads, and adjusts for misalignment. Because the hubs interlock with the spider, these couplings will continue to work even if the spider breaks or wears away. This fail-safe design gives you time to shut down your power source before damage occurs to other components. Lubrication is not required.
A complete coupling consists of two hubs and one spider. All components are sold separately.
Buna-N spiders are best for high-speed systems and jobs with frequent starting, stopping, and reversing. The most commonly used spider material, Buna-N absorbs vibration better than other materials but cannot handle as much torque. It won't break down when exposed to oil and chemicals.
Use polyurethane spiders for high-torque, continuous-motion applications where vibration is a concern. They absorb vibration better than Hytrel spiders but are not as resistant to oil and chemicals. They're not for use in applications with frequent starting, stopping, and reversing.
Hytrel spiders handle the highest torque of any of our spiders and have the best resistance to oil and chemicals. However, they don't compensate for as much misalignment and are not recommended for applications with frequent starting, stopping, and reversing.
Dia. | ||
---|---|---|
SAE Spline Size | (X) | (Y) |
A | 5/8" | 0.509" |
B | 7/8" | 0.754" |
B-B | 1" | 0.877" |
C | 1 1/4" | 1.087" |
D | 1 3/4" | 1.506" |
E | 1 3/4" | 1.506" |
Buna-N Rubber Spiders | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Splined Iron Hubs | Keyed Iron Hubs | Misalignment Capability | ||||||||||||||
O'all Lg. | OD | Pitch | Pressure Angle | Choose an SAE Spline Size | Each | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | |||
2 3/16" | 2 7/64" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 000000 | 9,000 | 140 | 0.015" | 1° | -40° to 212° | 0000000 | 000000 | ||
2 7/8" | 2 17/32" | 0.5" | 30° | 00000000 | 00000 | 00000000 | 00000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 | ||
4 1/2" | 3 3/4" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 00000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Polyurethane Spiders | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Splined Iron Hubs | Keyed Iron Hubs | Misalignment Capability | ||||||||||||||
O'all Lg. | OD | Pitch | Pressure Angle | Choose an SAE Spline Size | Each | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | |||
2 3/16" | 2 7/64" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 000000 | 3,600 | 210 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 | ||
2 7/8" | 2 17/32" | 0.5" | 30° | 00000000 | 00000 | 00000000 | 00000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 | ||
4 1/2" | 3 3/4" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 00000 | 3,600 | 1,860 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
Hytrel Rubber Spiders | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Splined Iron Hubs | Keyed Iron Hubs | Misalignment Capability | ||||||||||||||
O'all Lg. | OD | Pitch | Pressure Angle | Choose an SAE Spline Size | Each | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | |||
2 3/16" | 2 7/64" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 000000 | 3,600 | 400 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | ||
2 7/8" | 2 17/32" | 0.5" | 30° | 00000000 | 00000 | 00000000 | 00000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 | ||
4 1/2" | 3 3/4" | 0.5" | 30° | 00000000 | 000000 | 00000000 | 00000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |