About Gears
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About Roller Chain and Sprockets
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Idler Sprockets for Metric Roller Chain
Keep constant tension on your drive with these sprockets that press against your metric ISO roller chain to take up slack and reduce wear and vibration. They rotate freely on built-in ball bearings, which are double sealed to keep dirt out, and are for use with roller chain tensioners. All come with a finished bore that fits directly onto your shaft—no need for machining. These sprockets meet ISO 606, which is an international standard for dimensions and materials.
For technical drawings and 3-D models, click on a part number.
Bearing | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia., mm | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Type | Material | Specifications Met | Each | |
For ISO 06B Roller Chain (9.53 mm Pitch) | ||||||||||
| 21 | 16 | 68 | 18 | 40 | Steel | Ball | Steel | ISO 606 | 0000000 | 000000 |
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. 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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Module | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Material | Teeth Heat Treatment | Dia., mm | Wd., mm | Each | |
Round Bore | ||||||||||||
| 2 | 32 | 64 | 68 | 20 | 30 | 12 | Black-Oxide 1045 Carbon Steel | Not Hardened | 50 | 10 | 00000000 | 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., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance (A), mm | Dia., mm | Wd., mm | Material | Each | |
Round Bore | ||||||||||||||
| 10 | 1.5 | 20° | 3:1 | 45 | 68 | 68 | 20 | 10 | 28 | 36 | 11 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |
| 11 | 1.5 | 20° | 5:2 | 45 | 68 | 68 | 21 | 10 | 30 | 36 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |
Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Face Wd., mm | Module | Pressure Angle | Speed Ratio | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Overall Wd., mm | For Shaft Dia., mm | Mounting Distance (B), mm | Dia., mm | Wd., mm | Material | Each | |
Round Bore | ||||||||||||||
| 10 | 1.5 | 20° | 3:1 | 15 | 23 | 27 | 23 | 8 | 47 | 18 | 13 | Black-Oxide 1045 Carbon Steel | 00000000 | 000000 |
| 11 | 1.5 | 20° | 5:2 | 18 | 27 | 31 | 22 | 8 | 45 | 23 | 10 | Black-Oxide 1045 Carbon Steel | 00000000 | 00000 |