About Roller Chain and Sprockets
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About Gears
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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.
Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Includes | Each | |
10 | 1/4" | 0.92" | 1/2" | 1/2" | Steel | Two Set Screws | 000000 | 000000 |
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) | ||||||||
---|---|---|---|---|---|---|---|---|
10 | 1/4" | 1/4" | 0.92" | 1/2" | 1/2" | Steel | 000000 | 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) | ||||||||
---|---|---|---|---|---|---|---|---|
10 | 1/4" | 1/4" | 0.92" | 1/2" | 1/2" | 18-8 Stainless Steel | 000000 | 000000 |
Sprockets for Miniature Roller Chain
Often used in electronic equipment, instrumentation devices, printers, and other compact machinery, these sprockets are made for use with our miniature roller chain.
Acetal sprockets are lightweight, quiet, and nonconductive. Press fit them onto your shaft.
For technical drawings and 3-D models, click on a part number.
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" | 12 | 0.200" | 3/16" | Finished | 0.31" | 0.438" | 0.688" | 0.764" | Machined | Anodized Aluminum | 0.5" | 0000000 | 000000 |
For 3/8" Max. Belt Wd. | |||||||||||||
With Hub—Two Flanges | |||||||||||||
0.938" | 11 | 0.200" | 3/16" | Finished | 0.43" | 0.563" | 0.812" | 0.7" | Machined | Anodized Aluminum | 0.5" | 0000000 | 00000 |
1" | 12 | 0.200" | 3/16" | Finished | 0.43" | 0.563" | 0.812" | 0.764" | Machined | Anodized Aluminum | 0.5" | 0000000 | 00000 |
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 | |||||||||||||||
0.88" | 10 | 0.200" | 3/16" | Finished | 0.5" | 0.625" | 0.813" | 0.637" | 2 | Molded | Acetal | Aluminum | 0.5" | 00000000 | 00000 |
0.94" | 11 | 0.200" | 3/16" | Finished | 0.5" | 0.625" | 0.813" | 0.7" | 2 | Molded | Acetal | Aluminum | 0.5" | 00000000 | 0000 |
1" | 12 | 0.200" | 3/16" | Finished | 0.5" | 0.625" | 0.813" | 0.764" | 2 | Molded | Acetal | Aluminum | 0.5" | 00000000 | 0000 |
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. | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
0.993" | 12 | 0.200" | 3/16" | Finished | 0.422" | 0.563" | 0.781" | 0.764" | 2 | Sintered | 0.5" | 00000000 | 000000 |
MXL Series Lightweight Timing Belt Pulleys
Made from polycarbonate, these pulleys are useful in applications with weight constraints. All 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.
2 Flanges | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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. | |||||||||||||
0.63" | 18 | 0.080" | 3/16" | Finished | 0.28" | 0.438" | 0.688" | 0.458" | Molded | Polycarbonate | 0.5" | 0000000 | 00000 |
0.68" | 20 | 0.080" | 3/16" | Finished | 0.28" | 0.438" | 0.688" | 0.509" | Molded | Polycarbonate | 0.5" | 0000000 | 0000 |
0.7" | 21 | 0.080" | 3/16" | Finished | 0.28" | 0.438" | 0.688" | 0.535" | Molded | Polycarbonate | 0.5" | 0000000 | 0000 |
0.73" | 22 | 0.080" | 3/16" | Finished | 0.28" | 0.438" | 0.688" | 0.56" | Molded | Polycarbonate | 0.5" | 000000 | 0000 |
0.78" | 24 | 0.080" | 3/16" | Finished | 0.28" | 0.438" | 0.688" | 0.611" | Molded | Polycarbonate | 0.5" | 0000000 | 0000 |
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 hardened teeth are more wear resistant than gears with teeth that are not hardened. 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.
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.
Brass gears and racks are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.
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.
Stainless steel gears and racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Teeth Heat Treatment | Dia. | Wd. | Set Screw Thread Size | Each | |
Round Bore | |||||||||||||
48 | 36 | 3/4" | 0.79" | 1/8" | 0.375" | 3/16" | Brass | __ | 0.5" | 0.25" | __ | 0000000 | 000000 |
24 | 15 | 5/8" | 0.71" | 1/4" | 0.5" | 3/16" | Brass | __ | 0.5" | 0.25" | __ | 0000000 | 00000 |
16 | 24 | 1 1/2" | 1.63" | 3/4" | 1.25" | 5/8" | 1020 Carbon Steel | Not Hardened | 1.2" | 0.5" | __ | 0000000 | 00000 |
Round Bore with Set Screw | |||||||||||||
64 | 36 | 0.563" | 0.59" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
64 | 48 | 3/4" | 0.78" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
48 | 30 | 5/8" | 0.67" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
48 | 36 | 3/4" | 0.79" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
48 | 48 | 1" | 1.04" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 20 | 5/8" | 0.69" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 24 | 3/4" | 0.81" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 32 | 1" | 1.06" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 36 | 1 1/8" | 1.19" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 48 | 1 1/2" | 1.56" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 64 | 2" | 2.06" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
32 | 72 | 2 1/4" | 2.31" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
24 | 15 | 5/8" | 0.71" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
24 | 18 | 3/4" | 0.83" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
24 | 24 | 1" | 1.08" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
24 | 36 | 1 1/2" | 1.58" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
24 | 48 | 2" | 2.08" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
24 | 60 | 2 1/2" | 2.58" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 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 | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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. | Each | |
Round Bore—1117 Carbon Steel | ||||||||||||||
20 | 12 | 90° | 20° | 0.6" | 0.67" | 0.13" | 0.489" | 1/4" | 0.672" | Not Hardened | 0.5" | 0.31" | 0000000 | 000000 |
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 | 28 | 0.583" | 0.62" | 1/8" | 0.375" | 1/8" | Nylon Plastic | Molded | White | 0.5" | 0.25" | 00000000 | 000000 |
48 | 32 | 0.667" | 0.7" | 1/8" | 0.375" | 1/8" | Nylon Plastic | Molded | White | 0.5" | 0.25" | 00000000 | 00000 |
32 | 20 | 5/8" | 0.69" | 3/16" | 0.438" | 3/16" | Nylon Plastic | Molded | White | 0.5" | 0.25" | 00000000 | 00000 |
24 | 18 | 3/4" | 0.83" | 1/4" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.5" | 0.188" | 00000000 | 00000 |
Plastic 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. 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/module.
Acetal gears are best suited for use in light duty machines or for prototyping.
For technical drawings and 3-D models, click on a part number.
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 | |||||||||||||
32 | 24 | 3/4" | 0.81" | 3/16" | 0.5" | 3/16" | Acetal Plastic | Molded | White | 0.5" | 0.313" | 0000000 | 00000 |
Plastic Miter Gears
Connect two shafts at a right angle without changing shaft speed or torque. Made of plastic, these gears run quieter than metal gears and have good corrosion and chemical resistance.
For two gears to mesh correctly, they must have the same pressure angle, pitch/module, and number of teeth.
Nylon gears are self-lubricating, so they’re often used in food machinery. However, they’re not approved for direct contact with food or chemicals that will come into contact with food.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Material | Fabrication | Color | Dia. | Wd. | Each | |
Round Bore | |||||||||||||||
32 | 24 | 20° | 3/4" | 0.8" | 0.16" | 0.406" | 3/16" | 0.688" | Nylon Plastic | Molded | White | 0.5" | 0.188" | 0000000 | 000000 |