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Maximum Torque
Torque Limiter Type
Torque
DFARS Specialty Metals
Export Control Classification Number (ECCN)
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.
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 | 6524K171 | 000000 | 6525K27 | 000000 | 6525K68 | 000000 | __ | ______ | 00 | |
| 5/16" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 11/32" | 1/8" | 1 | 6 | Steel | 6524K172 | 00000 | 6525K27 | 00000 | 6525K68 | 00000 | __ | ______ | 00 | |
| 3/8" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 11/32" | 1/8" | 1 | 6 | Steel | 6524K173 | 00000 | 6525K27 | 00000 | 6525K68 | 00000 | __ | ______ | 00 | |
| 3/8" | 2 1/4" | 2" | 3/32" | 3/64" | 1/2" | 1/8" | 5 | 35 | Steel | 6524K111 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 1/2" | 2 1/4" | 2" | 1/8" | 1/16" | 1/2" | 1/8" | 5 | 35 | Steel | 6524K18 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 1/2" | 2 1/2" | 1 3/4" | 1/8" | 1/16" | 11/32" | 1/8" | 25 | 60 | Steel | 6524K121 | 00000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 00000 | ||
| 1/2" | 3 3/8" | 2 1/8" | 1/8" | 1/16" | 1/2" | 1/8" | 11 | 100 | Steel | 6524K131 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 5/8" | 2 1/4" | 2" | 3/16" | 3/32" | 1/2" | 1/8" | 5 | 35 | Steel | 6524K19 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 5/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 25 | 60 | Steel | 6524K122 | 00000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 5/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 1/2" | 1/8" | 11 | 100 | Steel | 6524K27 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 3/4" | 2 1/4" | 2" | 3/16" | 3/32" | 1/2" | 1/8" | 5 | 35 | Steel | 6524K21 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 3/4" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 25 | 60 | Steel | 6524K123 | 00000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 3/4" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 1/2" | 1/8" | 11 | 100 | Steel | 6524K28 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 3/4" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 50 | 120 | Steel | 6524K141 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 3/4" | 4 1/2" | 2 7/8" | 3/16" | 3/32" | 7/8" | 1/8" | 18 | 190 | Steel | 6524K321 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 7/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 25 | 60 | Steel | 6524K124 | 00000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 7/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 1/2" | 1/8" | 11 | 100 | Steel | 6524K29 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 7/8" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 50 | 120 | Steel | 6524K142 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 1" | 2 1/2" | 1 3/4" | 1/4" | 1/8" | 11/32" | 1/8" | 25 | 60 | Steel | 6524K501 | 00000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 1" | 3 3/8" | 2 1/8" | 1/4" | 1/8" | 1/2" | 1/8" | 11 | 100 | Steel | 6524K31 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 1" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 50 | 120 | Steel | 6524K143 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 1" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 7/8" | 1/8" | 18 | 190 | Steel | 6524K322 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K151 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1" | 6" | 3" | 1/4" | 1/8" | 13/16" | 1/8" | 24 | 320 | Steel | 6524K125 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 1/8" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 7/8" | 1/8" | 18 | 190 | Steel | 6524K323 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1 1/8" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K152 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 3/16" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K153 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 1/4" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 50 | 120 | Steel | 6524K503 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 1 1/4" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 7/8" | 1/8" | 18 | 190 | Steel | 6524K324 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1 1/4" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K154 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 1/4" | 6" | 3" | 1/4" | 1/8" | 13/16" | 1/8" | 24 | 320 | Steel | 6524K126 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 3/8" | 4 1/2" | 2 7/8" | 5/16" | 5/32" | 7/8" | 1/8" | 18 | 190 | Steel | 6524K325 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1 3/8" | 5" | 2 7/8" | 5/16" | 5/32" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K155 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 3/8" | 6" | 3" | 5/16" | 5/32" | 13/16" | 1/8" | 24 | 320 | Steel | 6524K127 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 7/16" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K156 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 7/16" | 6" | 3" | 3/8" | 3/16" | 13/16" | 1/8" | 24 | 320 | Steel | 6524K138 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 1/2" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K157 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 1/2" | 6" | 3" | 3/8" | 3/16" | 13/16" | 1/8" | 24 | 320 | Steel | 6524K128 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 5/8" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 90 | 250 | Steel | 6524K158 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 5/8" | 6" | 3" | 3/8" | 3/16" | 13/16" | 1/8" | 24 | 320 | Steel | 6524K129 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
Double Spring | |||||||||||||||||||
| 1/4" | 1 5/16" | 1 3/8" | 1/16" | 1/32" | 5/16" | 1/8" | 2 | 12 | Steel | 6524K331 | 000000 | 6525K27 | 00000 | 6525K68 | 00000 | __ | ______ | 00 | |
| 5/16" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 5/16" | 1/8" | 2 | 12 | Steel | 6524K332 | 000000 | 6525K27 | 00000 | 6525K68 | 00000 | __ | ______ | 00 | |
| 3/8" | 1 5/16" | 1 3/8" | 3/32" | 3/64" | 5/16" | 1/8" | 2 | 12 | Steel | 6524K333 | 000000 | 6525K27 | 00000 | 6525K68 | 00000 | __ | ______ | 00 | |
| 3/8" | 2 1/4" | 2" | 3/32" | 3/64" | 15/32" | 1/8" | 7 | 50 | Steel | 6524K411 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 1/2" | 2 1/4" | 2" | 1/8" | 1/16" | 15/32" | 1/8" | 7 | 50 | Steel | 6524K23 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 1/2" | 2 1/2" | 1 3/4" | 1/8" | 1/16" | 11/32" | 1/8" | 30 | 95 | Steel | 6524K421 | 000000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 1/2" | 3 3/8" | 2 1/8" | 1/8" | 1/16" | 7/16" | 1/8" | 13 | 175 | Steel | 6524K431 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 5/8" | 2 1/4" | 2" | 3/16" | 3/32" | 15/32" | 1/8" | 7 | 50 | Steel | 6524K24 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 5/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 30 | 95 | Steel | 6524K422 | 000000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 5/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 7/16" | 1/8" | 13 | 175 | Steel | 6524K432 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 3/4" | 2 1/4" | 2" | 3/16" | 3/32" | 15/32" | 1/8" | 7 | 50 | Steel | 6524K25 | 000000 | 6525K11 | 00000 | 6525K62 | 00000 | __ | ______ | 00 | |
| 3/4" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 30 | 95 | Steel | 6524K423 | 000000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 3/4" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 7/16" | 1/8" | 13 | 175 | Steel | 6524K34 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 3/4" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 60 | 190 | Steel | 6524K441 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 3/4" | 4 1/2" | 2 7/8" | 3/16" | 3/32" | 13/16" | 1/8" | 20 | 285 | Steel | 6524K381 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 7/8" | 2 1/2" | 1 3/4" | 3/16" | 3/32" | 11/32" | 1/8" | 30 | 95 | Steel | 6524K424 | 000000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 7/8" | 3 3/8" | 2 1/8" | 3/16" | 3/32" | 7/16" | 1/8" | 13 | 175 | Steel | 6524K434 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 7/8" | 3 1/2" | 2 3/16" | 3/16" | 3/32" | 1/2" | 1/8" | 60 | 190 | Steel | 6524K442 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 1" | 2 1/2" | 1 3/4" | 1/4" | 1/8" | 11/32" | 1/8" | 30 | 95 | Steel | 6524K502 | 000000 | 6525K12 | 00000 | 6525K64 | 0000 | 6525K6 | 0000 | ||
| 1" | 3 3/8" | 2 1/8" | 1/4" | 1/8" | 7/16" | 1/8" | 13 | 175 | Steel | 6524K36 | 000000 | 6525K13 | 00000 | 6525K63 | 00000 | __ | ______ | 00 | |
| 1" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 60 | 190 | Steel | 6524K443 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 1" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 13/16" | 1/8" | 20 | 285 | Steel | 6524K382 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K451 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1" | 6" | 3" | 1/4" | 1/8" | 3/4" | 1/8" | 26 | 440 | Steel | 6524K132 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 1/8" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 13/16" | 1/8" | 20 | 285 | Steel | 6524K383 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1 1/8" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K452 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 3/16" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K453 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 1/4" | 3 1/2" | 2 3/16" | 1/4" | 1/8" | 1/2" | 1/8" | 60 | 190 | Steel | 6524K504 | 000000 | 6525K14 | 00000 | 6525K65 | 00000 | 6525K7 | 0000 | ||
| 1 1/4" | 4 1/2" | 2 7/8" | 1/4" | 1/8" | 13/16" | 1/8" | 20 | 285 | Steel | 6524K384 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1 1/4" | 5" | 2 7/8" | 1/4" | 1/8" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K454 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 1/4" | 6" | 3" | 1/4" | 1/8" | 3/4" | 1/8" | 26 | 440 | Steel | 6524K133 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 3/8" | 4 1/2" | 2 7/8" | 5/16" | 5/32" | 13/16" | 1/8" | 20 | 285 | Steel | 6524K385 | 000000 | 6525K32 | 00000 | 6525K72 | 00000 | __ | ______ | 00 | |
| 1 3/8" | 5" | 2 7/8" | 5/16" | 5/32" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K455 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 3/8" | 6" | 3" | 5/16" | 5/32" | 3/4" | 1/8" | 26 | 440 | Steel | 6524K134 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 7/16" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K456 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 7/16" | 6" | 3" | 3/8" | 3/16" | 3/4" | 1/8" | 26 | 440 | Steel | 6524K137 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 1/2" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K457 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 1/2" | 6" | 3" | 3/8" | 3/16" | 3/4" | 1/8" | 26 | 440 | Steel | 6524K135 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
| 1 5/8" | 5" | 2 7/8" | 3/8" | 3/16" | 5/8" | 1/8" | 120 | 400 | Steel | 6524K458 | 000000 | 6525K15 | 00000 | 6525K66 | 00000 | 6525K8 | 00000 | ||
| 1 5/8" | 6" | 3" | 3/8" | 3/16" | 3/4" | 1/8" | 26 | 440 | Steel | 6524K136 | 000000 | 6525K33 | 000000 | 6525K73 | 00000 | __ | ______ | 00 | |
