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System of Measurement
Belt Trade Size
Number of Teeth
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About Belts
Measure your old V-belt, timing belt, or pulleys to find the right belt replacement if you don’t know the trade size.
Timing Belts
Wd. | Outer Circle | No. of Teeth | Pitch | Reinforcement Material | Tooth Finish | Temp. Range, ° F | Belt Trade No. | Each | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Neoprene | |||||||||||
XL Trade Size | |||||||||||
| 1/4" | 24" | 120 | 0.200" | Fiberglass | Nylon Coated | -22 to 212 | 240XL025 | 6484K134 | 00000 | ||
| 3/8" | 24" | 120 | 0.200" | Fiberglass | Nylon Coated | -22 to 212 | 240XL037 | 6484K234 | 00000 | ||
Abrasion-Resistant Urethane Rubber | |||||||||||
XL Trade Size | |||||||||||
| 1/4" | 24" | 120 | 0.200" | Aramid | — | -30 to 180 | 240XL025 | 1679K137 | 0000 | ||
| 5/16" | 24" | 120 | 0.200" | Aramid | — | -30 to 180 | 240XL031 | 1679K138 | 0000 | ||
| 3/8" | 24" | 120 | 0.200" | Aramid | — | -30 to 180 | 240XL037 | 1679K139 | 00000 | ||
High-Temperature Silicone Rubber | |||||||||||
XL Trade Size | |||||||||||
| 1/4" | 24" | 120 | 0.200" | Aramid | — | -40 to 400 | 240XL025 | 51514T124 | 00000 | ||
| 3/8" | 24" | 120 | 0.200" | Aramid | — | -40 to 400 | 240XL037 | 51514T324 | 00000 | ||
| 1/2" | 24" | 120 | 0.200" | Aramid | — | -40 to 400 | 240XL050 | 51514T524 | 00000 | ||



























