Roller Chain Trade Size Roller Chain Trade Size |
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System of Measurement System of Measurement |
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OD OD | Show |
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OD OD | Hide |
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Material Material |
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Bore Type Bore Type |
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Finished | Machinable |
Bearing Type Bearing Type |
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![]() | Ball |
For Roller Chain Strand Type For Roller Chain Strand Type |
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![]() | Single |
Roller Chain Standard Roller Chain Standard |
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Bearing Seal Type Bearing Seal Type |
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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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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Keyway Width Keyway Width |
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Keyway Depth Keyway Depth |
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About Roller Chain and Sprockets
More
Sprockets for ANSI Roller Chain


Mount these sprockets onto your shaft and secure with a set screw—no machining necessary.
For technical drawings and 3-D models, click on a part number.

Keyway | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
20 | 1/4" | 1.73" | 5/8" | 1 9/32" | __ | __ | Steel | Two Set Screws | 00000000 | 000000 |
20 | 3/8" | 1.73" | 5/8" | 1 9/32" | __ | __ | Steel | Two Set Screws | 00000000 | 00000 |
20 | 1/2" | 1.73" | 5/8" | 1 9/32" | __ | __ | Steel | Two Set Screws | 00000000 | 00000 |
20 | 5/8" | 1.73" | 5/8" | 1 9/32" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
20 | 3/4" | 1.73" | 5/8" | 1 9/32" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
20 | 7/8" | 1.73" | 5/8" | 1 9/32" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
Machinable-Bore Sprockets for ANSI Roller Chain


For a custom fit on your shaft, these sprockets can be machined to your exact specifications. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size.
For technical drawings and 3-D models, click on a part number.
Number of Teeth | For Shaft Dia. | For Max. Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 25 Roller Chain (1/4" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
20 | 1/4" | 7/8" | 1.73" | 5/8" | 1 9/32" | Steel | 0000000 | 000000 |
Machinable-Bore Corrosion-Resistant Sprockets for ANSI Roller Chain


For a custom fit on your shaft, these sprockets can be machined to your exact specifications. They come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size. Made of stainless steel, they withstand washdown conditions and harsh environments.
For technical drawings and 3-D models, click on a part number.
Number of Teeth | For Shaft Dia. | For Max. Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 25 Roller Chain (1/4" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
20 | 1/4" | 7/8" | 1.73" | 5/8" | 1 9/32" | 18-8 Stainless Steel | 0000000 | 000000 |
Idler Sprockets for ANSI Roller Chain


Maintain constant tension on your drive with these sprockets that press against your chain to take up slack and reduce wear and vibration. They rotate freely on built-in bearings and are for use with roller chain tensioners. Bearings are double sealed to keep dirt out.
For technical drawings and 3-D models, click on a part number.
Bearing | |||||||||
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Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Type | Material | Each | |
For ANSI 25 Roller Chain (1/4" Pitch) | |||||||||
20 | 3/8" | 1.73" | 5/16" | 29/32" | Steel | Ball | Steel | 0000000 | 000000 |
MXL Series Corrosion-Resistant Timing Belt Pulleys
Anodized aluminum has good corrosion resistance. Pulleys are MXL series (miniature extra light) and have trapezoidal teeth. The teeth match up with the grooves along the inside diameter of a timing belt in order to move components forward or backward. Select a pulley with a maximum belt width that’s the same or larger than your timing belt width.
For technical drawings and 3-D models, click on a part number.



OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Hub Dia. | Each | |
For 1/8" Max. Belt Wd. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.73" | 60 | 0.080" | 1/4" | Finished | 0.16" | 0.276" | 0.531" | 1.53" | 2 | Machined | Anodized Aluminum | 1.222" | 0000000 | 000000 |
For 1/4" Max. Belt Wd. | ||||||||||||||
1.73" | 60 | 0.080" | 1/4" | Finished | 0.29" | 0.405" | 0.719" | 1.53" | 2 | Machined | Anodized Aluminum | 1.222" | 0000000 | 00000 |