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Set Screw Flexible Shaft Couplings
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Hubs, Split Spider, and Retaining Ring Shown Assembled | (Each Component Sold Separately) |
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Hubs and Spider 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—Buna-N spiders provide good vibration damping and chemical resistance.
Hytrel—Hytrel spiders provide fair vibration damping and excellent chemical resistance.
Polyurethane Rubber—Polyurethane spiders and split spiders provide fair vibration damping and good chemical resistance.
Hubs | Buna-N Spiders | Hytrel Spiders | Polyurethane Spiders | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Misalignment Capability | Misalignment Capability | Misalignment Capability | ||||||||||||||||||||||||||||||
Overall Lg. | OD | For Shaft Type | For Rotary Motion | Choose a Shaft Diameter | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Spider Material | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Spider Material | Each | Max. Rotation Speed, rpm | Max. Torque, in·lbf | Parallel | Angular | Temp. Range, ° F | Spider Material | Each | ||||||
Iron Hubs | ||||||||||||||||||||||||||||||||
| 4 1/2" | 3 3/4" | Keyed | Forward/Reverse, Start/Stop | 5/8", 3/4", 7/8", 1", 1 1/16", 1 1/8", 1 3/16", 1 1/4", 1 3/8", 1 7/16", 1 1/2", 1 9/16", 1 5/8", 1 11/16", 1 3/4", 1 7/8", 24 mm, 38 mm, 42 mm | 6408K19 | 0000000 | 5,000 | 1,240 | 0.015" | 1° | -40 to 212 | Buna-N | 6408K81 | 000000 | 3,600 | 3,705 | 0.015" | 0.5° | -55 to 245 | Hytrel | 6408K98 | 0000000 | 3,600 | 1,860 | 0.015" | 1° | -30 to 160 | Polyurethane Rubber | 2410K19 | 0000000 | ||
