Torque Limiters for Chain and Belt Drives
Prevent damage from overloading. When overloaded, these limiters cause your sprocket or pulley to slip. Once the overload is removed, the limiters automatically reset. Set the torque within the range listed. Friction discs are between the hub and pressure plate.
Double-spring limiters have a second spring for handling nearly twice the torque of single-spring limiters.
Optional sprockets are designed specifically to fit their corresponding limiters. These hubless sprockets are not interchangeable.
For technical drawings and 3-D models, click on a part number.
Torque Limiters
Torque Limiter Shown with Optional Sprocket
Replacement Bushing
Replacement Friction Disc
Torque Limiters | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Keyway | Torque | Optional Sprockets | Replacement Friction Discs for Torque Limiters | Replacement Bushings for Optional Sprockets | |||||||||||||||
| For Shaft Dia. | OD | O'all Wd. | Wd. | Dp. | For Max. Sprocket or Pulley Wd. | Friction Disc Thick. | Min., ft.-lbs. | Max., ft.-lbs. | Hub Material | Each | For Roller Chain Trade Size | Each | Each | For Roller Chain Trade Size | Each | ||||
Single Spring | |||||||||||||||||||
| 1/4" | 1 5/16" | 1 3/8" | 1/16" | 1/32" | 11/32" | 1/8" | 1 | 6 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 | __ | 000000 | 00 | |
| 5/16" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 11/32" | 1/8" | 1 | 6 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/8" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 11/32" | 1/8" | 1 | 6 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/8" | 2 1/4" | 2" | 3/32" | 3/64" | 1/2" | 1/8" | 5 | 35 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1/2" | 2 1/4" | 2" | 1/8" | 1/16" | 1/2" | 1/8" | 5 | 35 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1/2" | 2 1/2" | 1 3/4" | 1/8" | 1/16" | 11/32" | 1/8" | 25 | 60 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 00000 | ||
| 1/2" | 3 3/8" | 2 1/8" | 1/8" | 1/16" | 1/2" | 1/8" | 11 | 100 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 5/8" | 2 1/4" | 2" | 3/16" | 3/32" | 1/2" | 1/8" | 5 | 35 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 5/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 25 | 60 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 5/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 1/2" | 1/8" | 11 | 100 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/4" | 2 1/4" | 2" | 3/16" | 3/32" | 1/2" | 1/8" | 5 | 35 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/4" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 25 | 60 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 3/4" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 1/2" | 1/8" | 11 | 100 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/4" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 50 | 120 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 3/4" | 4 1/2" | 2 7/8" | 3/16" | 3/32" | 7/8" | 1/8" | 18 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 7/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 25 | 60 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 7/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 1/2" | 1/8" | 11 | 100 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 7/8" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 50 | 120 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1" | 2 1/2" | 1 3/4" | 1/4" | 1/8" | 11/32" | 1/8" | 25 | 60 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 1" | 3 3/8" | 2 1/8" | 1/4" | 1/8" | 1/2" | 1/8" | 11 | 100 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 50 | 120 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 7/8" | 1/8" | 18 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1" | 6" | 3" | 1/4" | 1/8" | 13/16" | 1/8" | 24 | 320 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/8" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 7/8" | 1/8" | 18 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/8" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 3/16" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/4" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 50 | 120 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/4" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 7/8" | 1/8" | 18 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/4" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/4" | 6" | 3" | 1/4" | 1/8" | 13/16" | 1/8" | 24 | 320 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 3/8" | 4 1/2" | 2 7/8" | 5/16" | 5/32" | 7/8" | 1/8" | 18 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 3/8" | 5" | 2 7/8" | 5/16" | 5/32" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 3/8" | 6" | 3" | 5/16" | 5/32" | 13/16" | 1/8" | 24 | 320 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 7/16" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 7/16" | 6" | 3" | 3/8" | 3/16" | 13/16" | 1/8" | 24 | 320 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/2" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/2" | 6" | 3" | 3/8" | 3/16" | 13/16" | 1/8" | 24 | 320 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 5/8" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 90 | 250 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 5/8" | 6" | 3" | 3/8" | 3/16" | 13/16" | 1/8" | 24 | 320 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
Double Spring | |||||||||||||||||||
| 1/4" | 1 5/16" | 1 3/8" | 1/16" | 1/32" | 5/16" | 1/8" | 2 | 12 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 5/16" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 5/16" | 1/8" | 2 | 12 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/8" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 5/16" | 1/8" | 2 | 12 | Steel | 00000000 | 00000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/8" | 2 1/4" | 2" | 3/32" | 3/64" | 15/32" | 1/8" | 7 | 50 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1/2" | 2 1/4" | 2" | 1/8" | 1/16" | 15/32" | 1/8" | 7 | 50 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1/2" | 2 1/2" | 1 3/4" | 1/8" | 1/16" | 11/32" | 1/8" | 30 | 95 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 1/2" | 3 3/8" | 2 1/8" | 1/8" | 1/16" | 7/16" | 1/8" | 13 | 175 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 5/8" | 2 1/4" | 2" | 3/16" | 3/32" | 15/32" | 1/8" | 7 | 50 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 5/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 30 | 95 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 5/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 7/16" | 1/8" | 13 | 175 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/4" | 2 1/4" | 2" | 3/16" | 3/32" | 15/32" | 1/8" | 7 | 50 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/4" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 30 | 95 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 3/4" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 7/16" | 1/8" | 13 | 175 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 3/4" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 60 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 3/4" | 4 1/2" | 2 7/8" | 3/16" | 3/32" | 13/16" | 1/8" | 20 | 285 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 7/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 30 | 95 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 7/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 7/16" | 1/8" | 13 | 175 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 7/8" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 60 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1" | 2 1/2" | 1 3/4" | 1/4" | 1/8" | 11/32" | 1/8" | 30 | 95 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 0000 | 000000 | 0000 | ||
| 1" | 3 3/8" | 2 1/8" | 1/4" | 1/8" | 7/16" | 1/8" | 13 | 175 | Steel | 0000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 60 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 13/16" | 1/8" | 20 | 285 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1" | 6" | 3" | 1/4" | 1/8" | 3/4" | 1/8" | 26 | 440 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/8" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 13/16" | 1/8" | 20 | 285 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/8" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 3/16" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/4" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 60 | 190 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/4" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 13/16" | 1/8" | 20 | 285 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/4" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/4" | 6" | 3" | 1/4" | 1/8" | 3/4" | 1/8" | 26 | 440 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 3/8" | 4 1/2" | 2 7/8" | 5/16" | 5/32" | 13/16" | 1/8" | 20 | 285 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 3/8" | 5" | 2 7/8" | 5/16" | 5/32" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 3/8" | 6" | 3" | 5/16" | 5/32" | 3/4" | 1/8" | 26 | 440 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 7/16" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 7/16" | 6" | 3" | 3/8" | 3/16" | 3/4" | 1/8" | 26 | 440 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 1/2" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 1/2" | 6" | 3" | 3/8" | 3/16" | 3/4" | 1/8" | 26 | 440 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
| 1 5/8" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 120 | 400 | Steel | 00000000 | 000000 | 0000000 | 00000 | 0000000 | 00000 | 000000 | 0000 | ||
| 1 5/8" | 6" | 3" | 3/8" | 3/16" | 3/4" | 1/8" | 26 | 440 | Steel | 00000000 | 000000 | 0000000 | 000000 | 0000000 | 00000 | __ | 000000 | 00 | |
