System of Measurement System of Measurement |
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Teeth Shape Teeth Shape |
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![]() | Curved |
For Shaft Diameter For Shaft Diameter |
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Number of Flanges Number of Flanges |
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Material Material |
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Pitch Diameter Pitch Diameter |
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Mount Type Mount Type |
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![]() | Press Fit |
Inside Width Inside Width |
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Bore Type Bore Type |
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![]() | Finished |
Overall Width Overall Width | Show |
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Overall Width Overall Width | Hide |
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Fabrication Fabrication |
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Finish Finish |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Outside Width Outside Width |
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High-Strength GT Timing Belt Pulleys
For higher speed or higher torque applications, these GT series timing belt pulleys provide a more precise fit than HTD pulleys. Use them where accuracy is critical, such as in storage and retrieval systems or in robotics. Similar to HTD timing belt pulleys, their teeth are curved for high strength. The curved teeth create positive grip engagement with timing belts, so these pulleys do not require re-tensioning—unlike drives using V-belts or sheaves. And unlike chain drives, there’s no metal-on-metal contact, so these pulleys don’t require lubrication.
Anodized aluminum pulleys are lightweight and resist corrosion. They have a finished bore and come with set screws for mounting on shafts.
For technical drawings and 3-D models, click on a part number.



Number of Teeth | Pitch, mm | For Shaft Diameter | Bore Type | Inside Width, mm | Outside Width, mm | Overall Width, mm | Pitch Diameter, mm | Number of Flanges | Fabrication | Material | Hub Diameter, mm | Each | |
For 9 mm Maximum Belt Width | |||||||||||||
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18 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 17.196 | 2 | Machined | Anodized Aluminum | 11.23 | 00000000 | 000000 |
20 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 19.101 | 2 | Machined | Anodized Aluminum | 12.7 | 00000000 | 00000 |
22 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 21.006 | 2 | Machined | Anodized Aluminum | 14.27 | 00000000 | 00000 |
24 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 22.911 | 2 | Machined | Anodized Aluminum | 15.88 | 0000000 | 00000 |
25 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 23.876 | 2 | Machined | Anodized Aluminum | 15.88 | 00000000 | 00000 |
26 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 24.816 | 2 | Machined | Anodized Aluminum | 15.88 | 00000000 | 00000 |
28 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 26.746 | 2 | Machined | Anodized Aluminum | 17.81 | 00000000 | 00000 |
30 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 28.651 | 2 | Machined | Anodized Aluminum | 19.71 | 00000000 | 00000 |
32 | 3 | 1/4" | Finished | 10.16 | 12.95 | 20.62 | 30.556 | 2 | Machined | Anodized Aluminum | 21.62 | 00000000 | 00000 |