About Roller Chain and Sprockets
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About Gears
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Sprockets for Metric Roller Chain
Designed to meet ISO 606 and DIN 8187 international dimensional standards, these sprockets are for use with compatible ISO and DIN roller chain. 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., mm | For Max. Shaft Dia., mm | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Specifications Met | Each | |
For ISO 04B Roller Chain (6 mm Pitch) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 10 | 6 | 8 | 21.7 | 10 | 13 | Steel | DIN 8187, ISO 606 | 0000000 | 000000 |
For ISO 05B Roller Chain (8 mm Pitch) | |||||||||
| 8 | 6 | 8 | 24 | 12 | 13 | Steel | DIN 8187, ISO 606 | 0000000 | 00000 |
For ISO 06B Roller Chain (9.53 mm Pitch) | |||||||||
| 8 | 8 | 9 | 28 | 22 | 13 | Steel | DIN 8187, ISO 606 | 0000000 | 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 technical drawings and 3-D models, click on a part number.
| OD, mm | Number of Teeth | Pitch, mm | For Shaft Dia., mm | Bore Type | Inside Wd., mm | Outside Wd., mm | Overall Wd., mm | Pitch Dia., mm | Fabrication | Material | Hub Dia., mm | Each | |
For 9.5 mm Max. Belt Wd. | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
With Hub—Two Flanges | |||||||||||||
| 25 | 12 | 5.080 | 6 | Finished | 11.2 | 14.2 | 20.6 | 19.4 | Machined | Anodized Aluminum | 13 | 00000000 | 000000 |
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. | |||||||||||||||
Metric | |||||||||||||||
| 22mm | 10 | 5.000mm | 6mm | Finished | 13mm | 16mm | 22mm | 16.18mm | 2 | Molded | Acetal | Aluminum | 13mm | 0000000 | 000000 |
| 24mm | 11 | 5.000mm | 6mm | Finished | 13mm | 16mm | 22mm | 17.78mm | 2 | Molded | Acetal | Aluminum | 13mm | 0000000 | 00000 |
| 25mm | 12 | 5.000mm | 6mm | Finished | 13mm | 16mm | 22mm | 19.41mm | 2 | Molded | Acetal | Aluminum | 13mm | 0000000 | 00000 |
MXL Series Lightweight Timing Belt Pulleys
Made from polycarbonate, these pulleys are useful in applications with weight constraints. All are MXL series (miniature extra light) and have trapezoidal teeth. The teeth match up with the grooves along the inside diameter of a timing belt in order to move components forward or backward. 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. | Fabrication | Material | Hub Dia. | Each | |
1 Flange | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For 6 mm Max. Belt Wd. | |||||||||||||
| 16mm | 18 | 2.030mm | 6mm | Finished | 8mm | 11.2mm | 17.5mm | 11.6mm | Molded | Polycarbonate | 13mm | 0000000 | 00000 |
2 Flanges | |||||||||||||
For 6 mm Max. Belt Wd. | |||||||||||||
| 16mm | 18 | 2.030mm | 6mm | Finished | 8mm | 11.2mm | 17.5mm | 11.6mm | Molded | Polycarbonate | 13mm | 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.
Brass gears and racks are easy to machine, so you can add your own mounting holes and make other alterations. They won't rust when exposed to water.
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 | Set Screw Thread Size | Each | |
Round Bore | |||||||||||||
| 0.5 | 30 | 15 | 16 | 3 | 10 | 4 | Brass | __ | 13 | 7 | __ | 00000000 | 000000 |
| 0.8 | 20 | 16 | 17.6 | 4 | 12 | 5 | Brass | __ | 13 | 8 | __ | 00000000 | 00000 |
Round Bore with Set Screw | |||||||||||||
| 0.5 | 24 | 12 | 13 | 5 | 16 | 5 | Black-Oxide 1045 Carbon Steel | Not Hardened | 13 | 11 | M4 | 00000000 | 00000 |
| 0.5 | 30 | 15 | 16 | 5 | 12 | 4 | Black-Oxide 1045 Carbon Steel | Not Hardened | 13 | 7 | M3 | 00000000 | 00000 |
| 0.8 | 20 | 16 | 17.6 | 8 | 16 | 5 | Black-Oxide 1045 Carbon Steel | Not Hardened | 13 | 8 | M4 | 00000000 | 00000 |