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.
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 35 Roller Chain (3/8" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 13 | 1/2" | 11/16" | 1.75" | 3/4" | 1 1/4" | 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.
Corrosion-Resistant Sprockets for ANSI Roller Chain
Mount these sprockets onto your shaft and secure with a set screw—no machining necessary. Made of stainless steel, they withstand washdown conditions and harsh environments.
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 | |
For ANSI 35 Roller Chain (3/8" Pitch) | ||||||||||
| 13 | 3/8" | 1.75" | 3/4" | 1 1/4" | 3/32" | 3/64" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 000000 |
| 13 | 1/2" | 1.75" | 3/4" | 1 1/4" | 1/8" | 1/16" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 00000 |
| 13 | 5/8" | 1.75" | 3/4" | 1 1/4" | 3/16" | 3/32" | 18-8 Stainless Steel | Two Set Screws | 00000000 | 00000 |
| 13 | 3/4" | 1.75" | 3/4" | 1 1/4" | 3/16" | 3/32" | 18-8 Stainless 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 35 Roller Chain (3/8" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 13 | 1/2" | 3/4" | 1.75" | 3/4" | 1 1/4" | 18-8 Stainless Steel | 00000000 | 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 35 Roller Chain (3/8" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 13 | 1/4" | 1/2" | 1.75" | 3/4" | 1 1/4" | Nylon Plastic | 00000000 | 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 35-2 Roller Chain (3/8" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 13 | 1/2" | 11/16" | 1.75" | 1 1/4" | 1 7/64" | Steel | 000000 | 000000 |
Wear-Resistant Wide-Hub Idler Sprockets for ANSI Roller Chain
Hardened teeth give these steel sprockets increased wear resistance for a long service life. The wide hub provides 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.
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 35 Roller Chain (3/8" Pitch) | |||||||||
| 13 | 1/2" | 1.75" | 3/4" | 1 3/16" | Steel | Needle Roller | Bronze | 0000000 | 0000000 |
Quick-Grip Screw-Clamp Bushings
Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed. As you tighten the collar nut, the inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.
Stainless steel bushings are corrosion resistant for use in harsh environments.
For technical drawings and 3-D models, click on a part number.
Self-Adjusting Spring Bushings
A toothed slot lets these bushings contract for insertion into the bore of your sprocket or pulley and then expand for a snug fit. Made of spring steel, they flex under stress and shock and can handle oscillating or slow rotational motion.
For technical drawings and 3-D models, click on a part number.
| OD | Overall Wd. | Material | Each | |
For 1 3/8" Shaft Diameter | ||||
|---|---|---|---|---|
| 1 3/4" | 1 1/4" | Steel | 00000000 | 000000 |
| 1 3/4" | 1 1/2" | Steel | 00000000 | 00000 |
| 1 3/4" | 2" | Steel | 00000000 | 00000 |
For 1 1/2" Shaft Diameter | ||||
| 1 3/4" | 1/2" | Steel | 00000000 | 0000 |
| 1 3/4" | 3/4" | Steel | 00000000 | 0000 |
| 1 3/4" | 1" | Steel | 00000000 | 0000 |
| 1 3/4" | 1 1/4" | Steel | 00000000 | 00000 |
| 1 3/4" | 1 1/2" | Steel | 00000000 | 00000 |
| 1 3/4" | 2" | Steel | 00000000 | 00000 |
| 1 3/4" | 2 1/2" | Steel | 00000000 | 00000 |
| 1 3/4" | 2 3/4" | Steel | 00000000 | 00000 |
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 tight spots, choose a pulley without a hub.
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 | |||||||||||||
| 1.75" | 24 | 0.200" | 5/16" | Finished | 0.31" | 0.438" | 0.781" | 1.528" | Machined | Anodized Aluminum | 1.062" | 0000000 | 000000 |
For 3/8" Max. Belt Wd. | |||||||||||||
With Hub—Two Flanges | |||||||||||||
| 1.75" | 24 | 0.200" | 1/4" | Finished | 0.43" | 0.563" | 0.906" | 1.528" | Machined | Anodized Aluminum | 1.063" | 0000000 | 00000 |
| 1.75" | 24 | 0.200" | 3/8" | Finished | 0.43" | 0.563" | 0.906" | 1.528" | Machined | Anodized Aluminum | 1.063" | 0000000 | 00000 |
Without Hub—Two Flanges | |||||||||||||
| 1.75" | 24 | 0.200" | 1/4" | Finished | 0.429" | 0.563" | 0.563" | 1.528" | Machined | Anodized Aluminum | __ | 00000000 | 00000 |
| 1.75" | 24 | 0.200" | 5/16" | Finished | 0.429" | 0.563" | 0.563" | 1.528" | Machined | Anodized Aluminum | __ | 00000000 | 00000 |
| 1.75" | 24 | 0.200" | 3/8" | Finished | 0.429" | 0.563" | 0.563" | 1.528" | Machined | Anodized Aluminum | __ | 00000000 | 00000 |
| 1.75" | 24 | 0.200" | 1/2" | Finished | 0.429" | 0.563" | 0.563" | 1.528" | Machined | Anodized Aluminum | __ | 00000000 | 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 | |||||||||||||||
| 1.75" | 24 | 0.200" | 5/16" | Finished | 0.5" | 0.625" | 0.813" | 1.528" | 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 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 | 12 | 1 1/2" | 1.75" | 1 1/4" | 2" | 3/4" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.75" | __ | __ | __ | 0000000 | 000000 |
Keyed Bore with Set Screw | |||||||||||||||
| 8 | 12 | 1 1/2" | 1.75" | 1 1/4" | 2" | 3/4" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.75" | 0.188" | 0.094" | 10-24 | 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. Some carbon steel gears have hardened teeth for even better 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.
Metal Worms and Worm Gears
Worm gears use screw threads to make large reductions to shaft speed while transmitting motion at a right angle. They transmit motion from worm to gear and cannot be reversed. For gears and worms to mesh correctly, they must have the same pressure angle and pitch/module. These worms are compatible with plastic worm gears.
Speed ratio is the ratio by which output shaft speed is reduced. As speed decreases, torque increases.
For technical drawings and 3-D models, click on a part number.
Keyway | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Pressure Angle | Worm Length | Gear Pitch Dia. | OD | For Shaft Dia. | Number of Thread Starts | Wd. | Dp. | Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
Keyed Bore—1144 Carbon Steel | |||||||||||||
| 8 | 14 1/2° | 1 3/4" | 1 1/2" | 1.75" | 3/4" | 1 | 0.188" | 0.094" | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |