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 | |
| 11 | 1/4" | 1" | 1/2" | 9/16" | 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) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 11 | 1/4" | 5/16" | 1" | 1/2" | 9/16" | Steel | 000000 | 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) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 11 | 1/4" | 5/16" | 1" | 31/64" | 9/16" | Nylon Plastic | 00000000 | 000000 |
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.
Light Duty Sleeve Bushings
Reduce the ID of sprockets, pulleys, and gears in low-torque applications. Bushings have a hole for a set screw.
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 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" | 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 | |||||||||||||
| 1" | 12 | 0.200" | 3/16" | Finished | 0.43" | 0.563" | 0.812" | 0.764" | Machined | Anodized Aluminum | 0.5" | 0000000 | 00000 |
Without Hub—Two Flanges | |||||||||||||
| 1" | 12 | 0.200" | 3/16" | Finished | 0.429" | 0.563" | 0.563" | 0.764" | Machined | Anodized Aluminum | __ | 00000000 | 00000 |
| 1" | 12 | 0.200" | 1/4" | Finished | 0.429" | 0.563" | 0.563" | 0.764" | 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" | 12 | 0.200" | 3/16" | Finished | 0.5" | 0.625" | 0.813" | 0.764" | 2 | Molded | Acetal | Aluminum | 0.5" | 00000000 | 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.
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.
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 | |||||||||||||
| 16 | 14 | 7/8" | 1" | 1/2" | 0.938" | 3/8" | 1144 Carbon Steel | Hardened | 0.688" | 0.438" | __ | 00000000 | 000000 |
| 16 | 14 | 7/8" | 1" | 1/2" | 0.938" | 3/8" | 1144 Carbon Steel | Not Hardened | 0.688" | 0.438" | __ | 0000000 | 00000 |
Round Bore with Set Screw | |||||||||||||
| 16 | 14 | 7/8" | 1" | 1/2" | 0.938" | 3/8" | 1144 Carbon Steel | Not Hardened | 0.688" | 0.438" | 10-24 | 0000000 | 00000 |
Metal Ratcheting Gears
Compared to plastic gears, these metal ratcheting gears are better for high-load, high-speed, and heavy duty applications. Used to prevent unwanted motion in jacks, tie downs, clutches, and winches, ratchet gears have sloped teeth that allow motion in one direction and prevent it in the other. 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.
| Face Wd. | Number of Teeth | OD | For Shaft Dia. | Mounting Distance | Material | Teeth Heat Treatment | Each | |
Round Bore | ||||||||
|---|---|---|---|---|---|---|---|---|
| 1/4" | 24 | 1" | 3/8" | 0.83" | 303 Stainless Steel | Not Hardened | 0000000 | 000000 |
Plastic Ratcheting Gears
A light duty alternative to metal, these plastic ratcheting gears run quieter than metal gears and have good corrosion and chemical resistance. Used to prevent unwanted motion in spools, clocks, and printers, ratchet gears have sloped teeth that allow motion in one direction and prevent it in the other.
A pawl is required to prevent backward motion.
For technical drawings and 3-D models, click on a part number.
| Face Wd. | Number of Teeth | OD | For Shaft Dia. | Mounting Distance | Material | Fabrication | Color | Each | |
Round Bore | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1/4" | 24 | 1" | 3/8" | 0.83" | Nylon Plastic | Machined | White | 0000000 | 000000 |