About Roller Chain and Sprockets
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About Gears
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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) | ||||||||
---|---|---|---|---|---|---|---|---|
18 | 3/8" | 1/2" | 1.57" | 31/64" | 1" | Nylon Plastic | 000000000 | 000000 |
XL Series Corrosion-Resistant Timing Belt Pulleys

Pulleys are anodized aluminum, which is more corrosion resistant than steel. They 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.

OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Material | Hub Dia. | Each | |
For 1/4" Max. Belt Wd. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
With Hub—Two Flanges | |||||||||||||
1.563" | 21 | 0.200" | 1/4" | Finished | 0.31" | 0.438" | 0.75" | 1.337" | Machined | Anodized Aluminum | 1" | 0000000 | 000000 |
1.625" | 22 | 0.200" | 5/16" | Finished | 0.31" | 0.438" | 0.75" | 1.401" | Machined | Anodized Aluminum | 1" | 0000000 | 00000 |
For 3/8" Max. Belt Wd. | |||||||||||||
With Hub—Two Flanges | |||||||||||||
1.563" | 21 | 0.200" | 1/4" | Finished | 0.43" | 0.563" | 0.875" | 1.337" | Machined | Anodized Aluminum | 1" | 0000000 | 00000 |
1.625" | 22 | 0.200" | 1/4" | Finished | 0.43" | 0.563" | 0.875" | 1.401" | Machined | Anodized Aluminum | 1" | 000000 | 00000 |
XL Series Timing Belt Pulleys
Pulleys 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.



OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Hub Dia. | Each | |
For 3/8" Max. Belt Wd. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.63" | 22 | 0.200" | 1/4" | Finished | 0.422" | 0.563" | 0.875" | 1.401" | 2 | Sintered | 1" | 00000000 | 000000 |



OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Hub Dia. | Each | |
For 3/8" Max. Belt Wd. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.625" | 22 | 0.200" | 3/8" | Finished | 0.43" | 0.563" | 0.875" | 1.401" | 2 | Machined | 1" | 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 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 | |||||||||||||||
12 | 15 | 1 1/4" | 1.42" | 3/4" | 1.25" | 5/8" | 1144 Carbon Steel | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 000000 |
Keyed Bore with Set Screw | |||||||||||||||
12 | 15 | 1 1/4" | 1.42" | 3/4" | 1.25" | 5/8" | 1144 Carbon Steel | Not Hardened | 1" | 0.5" | 0.188" | 0.094" | 10-24 | 0000000 | 00000 |
Metal Miter Gears



With straight, conically shaped teeth and a 1:1 speed ratio, miter gears connect two shafts at an angle without changing shaft speed or torque. They're more efficient than spiral miter gears because they create less friction.
For two gears to mesh correctly, they must have the same pressure angle, shaft angle, pitch/module, and number of teeth.
Carbon steel gears have hard, strong, and wear-resistant teeth. They’re best for heavy duty and high-torque applications, such as lifting equipment. However, these gears will rust when exposed to moisture or corrosive chemicals. Some gears have hardened teeth for additional wear resistance; 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 | Keyway | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | For Shaft Angle | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Teeth Heat Treatment | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Each | |
Round Bore—1144 Carbon Steel | |||||||||||||||||
20 | 25 | 90° | 20° | 1 1/4" | 1.32" | 1/4" | 0.75" | 3/8" | 1.188" | Not Hardened | 1" | 0.375" | __ | __ | __ | 0000000 | 000000 |
16 | 20 | 90° | 20° | 1 1/4" | 1.34" | 0.27" | 0.844" | 7/16" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
16 | 24 | 90° | 20° | 1 1/2" | 1.59" | 0.31" | 0.875" | 1/2" | 1.375" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 3/8" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 1/2" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
Keyed Bore with Set Screw—1144 Carbon Steel | |||||||||||||||||
16 | 24 | 90° | 20° | 1 1/2" | 1.59" | 0.31" | 0.875" | 1/2" | 1.375" | Hardened | 1" | 0.5" | 0.125" | 0.063" | 10-24 | 0000000 | 00000 |
12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 1/2" | 1.25" | Hardened | 1" | 0.5" | 0.125" | 0.063" | 10-24 | 0000000 | 00000 |
Metal Bevel Gears


A type of miter gear where one gear (sometimes called a pinion) is smaller than the other, bevel gears provide right-angle speed reduction at speed ratios ranging from 2:1 to 5:1. All are carbon steel for strength; they're compatible with plastic bevel gears. Teeth are not hardened so you can harden them to fit your application. Hardening a gear’s teeth increases its wear resistance.
A complete set consists of a gear and pinion (sold separately). For a gear and pinion to mesh correctly, they must have the same pressure angle, pitch/module, and face width. Speed ratio is the ratio by which shaft speed is reduced when transferring motion from pinion to gear. To increase shaft speed, transfer motion from gear to pinion. Changing shaft speed also changes torque: as speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.


Hub | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Face Wd. | Gear Pitch | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia. | OD | Overall Wd. | For Shaft Dia. | Mounting Distance (A) | Dia. | Wd. | Material | Each | |
Round Bore | ||||||||||||||
0.19" | 16 | 20° | 2:1 | 24 | 1 1/2" | 1.54" | 0.741" | 1/2" | 1" | 1" | 0.448" | 1144 Carbon Steel | 0000000 | 000000 |




Hub | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Face Wd. | Gear Pitch | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia. | OD | Overall Wd. | For Shaft Dia. | Mounting Distance (B) | Dia. | Wd. | Material | Each | |
Round Bore | ||||||||||||||
0.19" | 16 | 20° | 2:1 | 12 | 3/4" | 0.9" | 0.583" | 3/8" | 1.125" | 0.656" | 0.344" | 1144 Carbon Steel | 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 | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | ||||||||||||||||
12 | 15 | 20° | 1 1/4" | 1.36" | 0.3" | 0.86" | 1/2" | 1.25" | 1117 Carbon Steel | 1" | 0.5" | 0.125" | 0.063" | 1/4"-20 | 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.
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 Bore | |||||||||||||
48 | 96 | 2" | 2.04" | 1/8" | 0.375" | 1/4" | Nylon Plastic | Molded | White | 1" | 0.25" | 00000000 | 000000 |