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About Shaft Couplings
More
Set Screw Flexible Shaft Couplings
Hubs and Spider Shown Assembled
(Each Component Sold Separately)
Hubs, Split Spider, and Retaining Ring Shown Assembled
(Each Component Sold Separately)
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.
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.
Iron Hubs and Buna-N Rubber Spiders
Buna-N Rubber Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 3 31/64" | 2 35/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 7,000 | 315 | 0.015" | 1° | -40° to 212° | 0000000 | 000000 |
| 4 7/32" | 3 21/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 5,000 | 790 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 4 1/2" | 3 3/4" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 5,000 | 1,240 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 4 7/8" | 4 1/2" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 5,000 | 1,725 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
| 5 11/32" | 5" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 4,200 | 2,340 | 0.015" | 1° | -40° to 212° | 0000000 | 00000 |
Iron Hubs and Hytrel Rubber Spiders
Hytrel Rubber Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 3 31/64" | 2 35/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 3,600 | 790 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
| 4 7/32" | 3 21/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 3,600 | 2,265 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
| 4 1/2" | 3 3/4" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 3,600 | 3,705 | 0.015" | 0.5° | -55° to 245° | 0000000 | 00000 |
| 4 7/8" | 4 1/2" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 5,000 | 4,680 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
| 5 11/32" | 5" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 4,200 | 6,225 | 0.015" | 0.5° | -55° to 245° | 0000000 | 000000 |
Iron Hubs and Polyurethane Spiders
Polyurethane Spiders | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | |||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | ||
| 3 31/64" | 2 35/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 3,600 | 475 | 0.015" | 1° | -30° to 160° | 0000000 | 000000 |
| 4 7/32" | 3 21/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 3,600 | 1,185 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
| 4 1/2" | 3 3/4" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 3,600 | 1,860 | 0.015" | 1° | -30° to 160° | 0000000 | 00000 |
Iron Hubs, Polyurethane Split Spiders, and 347 Stainless Steel Retaining Rings
Polyurethane Split Spiders | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Iron Hubs | Misalignment Capability | 347 Stainless Steel Retaining Rings | ||||||||||||
| Overall Lg. | OD | For Motion Type | For Shaft Dia. | Each | Max. Speed, rpm | Max. Torque, in.-lbs. | Parallel | Angular | Temp. Range, °F | Each | Each | |||
| 3 31/64" | 2 35/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 000000 | 7,700 | 1,110 | 0.03" | 2° | -30° to 200° | 0000000 | 000000 | 0000000 | 000000 |
| 4 7/32" | 3 21/64" | Forward/Reverse, Start/Stop | 1 5/16" | 0000000 | 00000 | 5,900 | 2,180 | 0.03" | 2° | -30° to 200° | 0000000 | 00000 | 0000000 | 00000 |
The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)