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About Roller Chain and Sprockets
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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.
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
| 9 | 1" | 4.18" | 1 7/8" | 2 13/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 0000000 |
| 9 | 1 1/8" | 4.18" | 1 7/8" | 2 13/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 9 | 1 3/16" | 4.18" | 1 7/8" | 2 13/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 9 | 1 1/4" | 4.18" | 1 7/8" | 2 13/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 9 | 1 3/8" | 4.18" | 1 7/8" | 2 13/16" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 9 | 1 7/16" | 4.18" | 1 7/8" | 2 13/16" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 10 | 1" | 4.6" | 1 7/8" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 10 | 1 1/8" | 4.6" | 1 7/8" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 10 | 1 3/16" | 4.6" | 1 7/8" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 10 | 1 1/4" | 4.6" | 1 7/8" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 10 | 1 3/8" | 4.6" | 1 7/8" | 3 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 10 | 1 7/16" | 4.6" | 1 7/8" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1" | 5.01" | 1 7/8" | 3 9/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 1/8" | 5.01" | 1 7/8" | 3 9/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 3/16" | 5.01" | 1 7/8" | 3 9/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 1/4" | 5.01" | 1 7/8" | 3 9/16" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 3/8" | 5.01" | 1 7/8" | 3 9/16" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 7/16" | 5.01" | 1 7/8" | 3 9/16" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 1/2" | 5.01" | 1 7/8" | 3 9/16" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 5/8" | 5.01" | 1 7/8" | 3 9/16" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 3/4" | 5.01" | 1 7/8" | 3 9/16" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 1 15/16" | 5.01" | 1 7/8" | 3 9/16" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 2" | 5.01" | 1 7/8" | 3 9/16" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 11 | 2 3/16" | 5.01" | 1 7/8" | 3 9/16" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1" | 5.42" | 1 7/8" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 1/8" | 5.42" | 1 7/8" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 3/16" | 5.42" | 1 7/8" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 1/4" | 5.42" | 1 7/8" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 3/8" | 5.42" | 1 7/8" | 4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 7/16" | 5.42" | 1 7/8" | 4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 1/2" | 5.42" | 1 7/8" | 4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 5/8" | 5.42" | 1 7/8" | 4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 3/4" | 5.42" | 1 7/8" | 4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 1 15/16" | 5.42" | 1 7/8" | 4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 2" | 5.42" | 1 7/8" | 4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 12 | 2 3/16" | 5.42" | 1 7/8" | 4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 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.
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 100 Roller Chain (1 1/4" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 12 | 1" | 2 1/4" | 5.42" | 1 7/8" | 4" | 18-8 Stainless Steel | 0000000 | 0000000 |
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 100 Roller Chain (1 1/4" Pitch) | |||||||||
| 11 | 1 1/2" | 5.01" | 1 7/8" | 3 9/16" | Steel | Needle Roller | Bronze | 00000000 | 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.
L Series Timing Belt Pulleys
Pulleys are L series (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 | Material | Hub Dia. | Each | |
For 1" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.156" | 16 | 0.375" | 1/2" | Finished | 1.063" | 1.25" | 1.875" | 1.91" | 2 | Sintered | Steel | 1.438" | 00000000 | 000000 |
| OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Hub Dia. | Each | |
For 3/4" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.344" | 26 | 0.375" | 5/8" | Plain | 0.813" | 1" | 1.875" | 3.104" | 2 | Sintered | Steel | 2.5" | 00000000 | 000000 |
For 1" Max. Belt Wd. | ||||||||||||||
| 2.391" | 18 | 0.375" | 1/2" | Plain | 1.063" | 1.25" | 1.875" | 2.149" | 2 | Sintered | Steel | 1.625" | 00000000 | 00000 |
| 2.625" | 20 | 0.375" | 1/2" | Plain | 1.063" | 1.25" | 1.875" | 2.387" | 2 | Sintered | Steel | 1.688" | 00000000 | 00000 |
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/Machinable Bore | |||||||||||||||
| 10 | 28 | 2.8" | 3" | 1" | 1.875" | 3/4"-1 1/4" | 1144 Carbon Steel | Not Hardened | 2.125" | 0.875" | __ | __ | __ | 000000 | 000000 |
| 10 | 30 | 3" | 3.2" | 1" | 1.875" | 3/4"-1 1/4" | 1144 Carbon Steel | Not Hardened | 2.125" | 0.875" | __ | __ | __ | 0000000 | 000000 |
| 10 | 35 | 3 1/2" | 3.7" | 1" | 1.875" | 3/4"-1 5/16" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.875" | __ | __ | __ | 000000 | 00000 |
| 10 | 40 | 4" | 4.2" | 1" | 1.875" | 7/8"-1 5/16" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.875" | __ | __ | __ | 0000000 | 000000 |
| 10 | 48 | 4.8" | 5" | 1" | 1.875" | 7/8"-1 1/2" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.875" | __ | __ | __ | 0000000 | 000000 |
| 10 | 60 | 6" | 6.2" | 1" | 1.875" | 7/8"-1 1/2" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.875" | __ | __ | __ | 000000 | 000000 |
Keyed Bore with Set Screw | |||||||||||||||
| 10 | 28 | 2.8" | 3" | 1" | 1.875" | 3/4" | 1144 Carbon Steel | Not Hardened | 2.125" | 0.875" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
| 10 | 30 | 3" | 3.2" | 1" | 1.875" | 3/4" | 1144 Carbon Steel | Not Hardened | 2.125" | 0.875" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
| 10 | 35 | 3 1/2" | 3.7" | 1" | 1.875" | 3/4" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.875" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
| 10 | 60 | 6" | 6.2" | 1" | 1.875" | 7/8" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.875" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
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.
Cast iron gears are strong and durable.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Speed Ratio | Number of Teeth | Pressure Angle | Gear Pitch Dia. | For Number of Thread Starts | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Dia. | Wd. | Material | For Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
Round Bore—Cast Iron | |||||||||||||||||
| 6 | 20:1 | 20 | 14 1/2° | 3.33" | 1 | 3.71" | 1" | 1.875" | 3/4" | 1.875" | 0.875" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 0000000 |
| 6 | 24:1 | 24 | 14 1/2° | 4" | 1 | 4.37" | 1" | 1.875" | 3/4" | 1.875" | 0.875" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
| 6 | 30:1 | 30 | 14 1/2° | 5" | 1 | 5.37" | 1" | 1.875" | 7/8" | 2.25" | 0.875" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
| 6 | 40:1 | 40 | 14 1/2° | 6.67" | 1 | 7.04" | 1" | 1.875" | 1" | 2.5" | 0.875" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |