About Gears
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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 | |
18 | 1/4" | 1.57" | 1/2" | 1 1/8" | __ | __ | Steel | Two Set Screws | 00000000 | 000000 |
18 | 3/8" | 1.57" | 1/2" | 1 1/8" | __ | __ | Steel | Two Set Screws | 00000000 | 00000 |
18 | 1/2" | 1.57" | 1/2" | 1 1/8" | __ | __ | Steel | Two Set Screws | 00000000 | 00000 |
18 | 5/8" | 1.57" | 1/2" | 1 1/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
18 | 3/4" | 1.57" | 1/2" | 1 1/8" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
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) | ||||||||
---|---|---|---|---|---|---|---|---|
18 | 1/4" | 3/4" | 1.57" | 1/2" | 1 1/8" | Steel | 0000000 | 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) | ||||||||
---|---|---|---|---|---|---|---|---|
18 | 1/4" | 3/4" | 1.57" | 1/2" | 1 1/8" | 18-8 Stainless Steel | 0000000 | 000000 |
Idler Sprockets for ANSI Roller Chain
Maintain constant tension on your drive with these sprockets that press against your chain to take up slack and reduce wear and vibration. They rotate freely on built-in bearings and are for use with roller chain tensioners. Bearings are double sealed to keep dirt out.
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 1/2" Max. Belt Wd. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.922" | 14 | 0.375" | 3/8" | Finished | 0.563" | 0.75" | 1.25" | 1.671" | 2 | Sintered | Steel | 1.125" | 0000000 | 000000 |
For 3/4" Max. Belt Wd. | ||||||||||||||
1.922" | 14 | 0.375" | 3/8" | Finished | 0.813" | 1" | 1.5" | 1.671" | 2 | Sintered | Steel | 1.125" | 00000000 | 00000 |
For 1" Max. Belt Wd. | ||||||||||||||
1.922" | 14 | 0.375" | 3/8" | Finished | 1.063" | 1.25" | 1.75" | 1.671" | 2 | Sintered | Steel | 1.125" | 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 Bore | |||||||||||||||
10 | 14 | 1.4" | 1.6" | 1" | 1.625" | 5/8" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.625" | __ | __ | __ | 0000000 | 000000 |
8 | 12 | 1 1/2" | 1.75" | 1 1/4" | 2" | 3/4" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.75" | __ | __ | __ | 0000000 | 00000 |
Round/Machinable Bore | |||||||||||||||
24 | 36 | 1 1/2" | 1.58" | 1/4" | 0.625" | 3/8"-5/8" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.375" | __ | __ | __ | 0000000 | 00000 |
Keyed Bore with Set Screw | |||||||||||||||
24 | 36 | 1 1/2" | 1.58" | 1/4" | 0.625" | 3/8" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.375" | 0.094" | 0.047" | 10-24 | 0000000 | 00000 |
10 | 14 | 1.4" | 1.6" | 1" | 1.625" | 5/8" | 1144 Carbon Steel | Not Hardened | 1.125" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
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.
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. | Each | |
Round Bore | ||||||||||||
8 | 12 | 1 1/2" | 1.75" | 1 1/2" | 2.25" | 3/4" | 1144 Carbon Steel | Hardened | 1.125" | 0.75" | 0000000 | 000000 |
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 | ||||||||||||||
0.35" | 16 | 20° | 2:1 | 32 | 2" | 2.03" | 0.871" | 1/2" | 1.188" | 1.125" | 0.5" | 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 | ||||||||||||||
0.35" | 16 | 20° | 2:1 | 16 | 1" | 1.15" | 0.842" | 3/8" | 1.5" | 0.813" | 0.453" | 1144 Carbon Steel | 0000000 | 000000 |