About Roller Chain and Sprockets
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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 | |
13 | 5/8" | 2.91" | 1" | 1 7/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
13 | 3/4" | 2.91" | 1" | 1 7/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 7/8" | 2.91" | 1" | 1 7/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1 1/8" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1 3/16" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1 1/4" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | 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 50 Roller Chain (5/8" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
13 | 5/8" | 1 5/16" | 2.91" | 1" | 1 7/8" | Steel | 00000000 | 000000 |
Wear-Resistant Sprockets for ANSI Roller Chain

Hardened teeth give these steel sprockets increased wear resistance for a long service life. Mount them 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 | |
13 | 5/8" | 2.91" | 1" | 1 7/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
13 | 3/4" | 2.91" | 1" | 1 7/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 7/8" | 2.91" | 1" | 1 7/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1 1/8" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1 3/16" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
13 | 1 1/4" | 2.91" | 1" | 1 7/8" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
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 50 Roller Chain (5/8" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
13 | 5/8" | 1 5/16" | 2.91" | 1" | 1 7/8" | 18-8 Stainless Steel | 00000000 | 0000000 |
Lightweight Sprockets for ANSI Roller Chain


Made of nylon, these sprockets are lightweight, quiet, and corrosion resistant. 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 50 Roller Chain (5/8" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
13 | 1/2" | 7/8" | 2.91" | 1" | 1 7/8" | Nylon Plastic | 00000000 | 000000 |
Flat Sprockets for ANSI Roller Chain


Also known as A-plate sprockets, these have a slim profile that fits in narrow spaces. 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. | Material | Each | |
For ANSI 50 Roller Chain (5/8" Pitch) | |||||||
---|---|---|---|---|---|---|---|
13 | 5/8" | 1 7/8" | 2.91" | 11/32" | Steel | 0000000 | 000000 |
Sprockets for Double-Strand ANSI Roller Chain


These sprockets come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size. All have hardened teeth for increased wear resistance and a long service life.
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 50-2 Roller Chain (5/8" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
13 | 5/8" | 1 5/16" | 2.91" | 1 3/4" | 1 7/8" | Steel | 0000000 | 0000000 |
Wide-Hub Idler Sprockets for ANSI Roller Chain


A wide hub provides these sprockets with stability under heavy loads. Designed to rotate freely on built-in bearings, idler sprockets maintain constant tension on your drive by pressing against your chain to take up slack and reduce wear and vibration. They are for use with roller chain tensioners. Bearings are self-lubricating.
For technical drawings and 3-D models, click on a part number.
Bearing | |||||||||
---|---|---|---|---|---|---|---|---|---|
Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Type | Material | Each | |
For ANSI 50 Roller Chain (5/8" Pitch) | |||||||||
13 | 1/2" | 2.91" | 15/16" | 1 7/8" | Steel | Sleeve | Bronze | 0000000 | 000000 |
XL Series Lightweight Timing Belt Pulleys
Acetal and aluminum construction makes these pulleys useful in weight-sensitive applications. All are XL series (extra light) and have trapezoidal teeth. 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.



Hub | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Material | Dia. | Each | |
For 3/8" Max. Belt Wd. | |||||||||||||||
Inch | |||||||||||||||
2.91" | 42 | 0.200" | 5/16" | Finished | 0.5" | 0.625" | 0.813" | 2.674" | 2 | Molded | Acetal | Aluminum | 0.875" | 00000000 | 000000 |