System of Measurement System of Measurement |
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Roller Chain Trade Size Roller Chain Trade Size |
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Bore Type Bore Type |
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Finished | Machinable |
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Round | Keyed |
OD OD | Show |
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OD OD | Hide |
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Component Component |
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![]() | Gear |
Gear Type Gear Type |
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Spur | Spiral Miter |
For Roller Chain Strand Type For Roller Chain Strand Type |
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![]() | Single |
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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Roller Chain Standard Roller Chain Standard |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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About Roller Chain and Sprockets
More
About Gears
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 | |
25 | 3/8" | 2.13" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 00000000 | 000000 |
25 | 1/2" | 2.13" | 5/8" | 1 1/2" | __ | __ | Steel | Two Set Screws | 00000000 | 00000 |
25 | 5/8" | 2.13" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
25 | 3/4" | 2.13" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
25 | 7/8" | 2.13" | 5/8" | 1 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
25 | 1" | 2.13" | 5/8" | 1 1/2" | 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 25 Roller Chain (1/4" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
25 | 3/8" | 1" | 2.13" | 5/8" | 1 1/2" | Steel | 0000000 | 000000 |
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 25 Roller Chain (1/4" Pitch) | ||||||||
---|---|---|---|---|---|---|---|---|
25 | 1/2" | 1" | 2.13" | 45/64" | 1 55/64" | Nylon Plastic | 00000000 | 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 | |||||||||||||||
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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 | |||||||||||||||
2.13" | 30 | 0.200" | 5/16" | Finished | 0.5" | 0.625" | 0.875" | 1.91" | 2 | Molded | Acetal | Aluminum | 0.875" | 00000000 | 000000 |
Metal Gears and Gear Racks—14 1/2° Pressure Angle
A former industry standard, 14½° pressure angle gears are often found on older machinery. Made of carbon steel, they have high strength and are better than plastic gears and gear racks for high-load, high-speed, and heavy duty applications.
Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.
For components to mesh correctly, they must have the same pressure angle and pitch.
Gears with machinable bore have a large hub diameter so you can machine them to fit your shaft.
Gears with teeth that are not hardened can be hardened to fit your application. Hardening a gear's teeth increases its wear resistance.
For technical drawings and 3-D models, click on a part number.



Hub | Keyway | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Teeth Heat Treatment | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Each | |
Round Bore | |||||||||||||||
8 | 15 | 1 7/8" | 2.13" | 1 1/4" | 2" | 7/8" | 1144 Carbon Steel | Not Hardened | 1.5" | 0.75" | __ | __ | __ | 00000000 | 000000 |
Round/Machinable Bore | |||||||||||||||
16 | 32 | 2" | 2.13" | 1/2" | 1" | 1/2"-1" | 1144 Carbon Steel | Not Hardened | 1.75" | 0.5" | __ | __ | __ | 0000000 | 00000 |
Keyed Bore with Set Screw | |||||||||||||||
16 | 32 | 2" | 2.13" | 1/2" | 1" | 1/2" | 1144 Carbon Steel | Not Hardened | 1.75" | 0.5" | 0.125" | 0.063" | 1/4"-20 | 0000000 | 00000 |
Metal Gears and Gear Racks—20° Pressure Angle
The current industry standard, these 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. Compared to plastic gears and racks, they’re better for high-load, high-speed, and heavy duty applications. Also known as spur gears.
Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion. To minimize your footprint, mount one or more standard gears inside of an internal gear.
For components to mesh correctly, they must have the same pressure angle and pitch/module.
Carbon steel components have hard, strong, and wear-resistant teeth, although they will rust when exposed to moisture and corrosive chemicals. They're best for high-torque machines, like lifting equipment, and heavy duty applications, such as rock crushing. Gears with teeth that are not hardened can be hardened to fit your application.
For technical drawings and 3-D models, click on a part number.



Hub | ||||||||||||
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Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Teeth Heat Treatment | Dia. | Wd. | Each | |
Round Bore | ||||||||||||
16 | 32 | 2" | 2.13" | 3/4" | 1.25" | 3/4" | 1020 Carbon Steel | Not Hardened | 1.7" | 0.5" | 0000000 | 000000 |
High-Power Metal Miter Gears



Also known as spiral miter gears, these gears have curved teeth that stay in contact longer than straight teeth so they handle heavier loads at higher speeds. They run quieter than standard miter gears because the teeth gradually engage. Use them to transmit motion at a right angle while maintaining shaft speed and torque. Gears are carbon steel for strength. Teeth are hardened for wear resistance.
Gears must be identical in order to mesh correctly; they're sold as a pair.
For technical drawings and 3-D models, click on a part number.
Hub | Keyway | |||||||||||||||
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Gear Pitch | Number of Teeth | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Material | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Pair | |
Keyed Bore with Set Screw | ||||||||||||||||
10 | 20 | 20° | 2" | 2.13" | 0.47" | 1.36" | 3/4" | 2" | 1117 Carbon Steel | 1.625" | 0.78" | 0.188" | 0.094" | 5/16"-18 | 000000 | 0000000 |
Plastic Gears and Gear Racks—14 1/2° Pressure Angle
A former industry standard, 14½° pressure angle gears are often found on older machinery. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re also known as spur gears.
Combine gears with different numbers of teeth to change speed and torque in your assembly. Combine a gear and rack to convert rotary motion into linear motion.
For components to mesh correctly, they must have the same pressure angle and pitch.
Gears with machinable bore have a large hub diameter so you can machine them to fit your shaft.
For technical drawings and 3-D models, click on a part number.

Round/Machinable
Bore

Hub | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Fabrication | Color | Dia. | Wd. | Each | |
Round/Machinable Bore | |||||||||||||
16 | 32 | 2" | 2.13" | 1/2" | 1" | 1/2"-1" | Nylon Plastic | Machined | White | 1.75" | 0.5" | 00000000 | 000000 |