About Gears
More
About Roller Chain and Sprockets
More
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 06B Roller Chain (9.53 mm Pitch) | |||||||||
---|---|---|---|---|---|---|---|---|---|
8 | 8 | 9 | 28 | 22 | 13 | Steel | DIN 8187, ISO 606 | 0000000 | 000000 |
Flanged Screw-Clamp Bushings
A mounting flange prevents movement during tightening. These bushings are good for shock loads. When you tighten the included screws, the bushing's inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear. They can be mounted on shafts with or without keyways.
For technical drawings and 3-D models, click on a part number.
For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Fastener Tightening Torque, in.-lbs. | Material | Includes | Each | |
14mm | 28mm | 24mm | 640 | 42 | Steel | Clamping Screws | 0000000 | 000000 |
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, 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 | |||||||||||||
28 | 14 | 5.080 | 8 | Finished | 11.2 | 14.2 | 20.6 | 22.6 | Machined | Anodized Aluminum | 14 | 00000000 | 000000 |
Without Hub—Two Flanges | |||||||||||||
28 | 14 | 5.080 | 8 | Finished | 10.9 | 14.3 | 14.3 | 22.6 | 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. | |||||||||||||||
Metric | |||||||||||||||
28mm | 14 | 5.000mm | 8mm | Finished | 13mm | 16mm | 22mm | 22.63mm | 2 | Molded | Acetal | Aluminum | 19mm | 0000000 | 000000 |
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.
2 Flanges | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
OD | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Material | Hub Dia. | Each | |
For 6 mm Max. Belt Wd. | |||||||||||||
28mm | 36 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 11.2mm | 23.3mm | Molded | Polycarbonate | __ | 0000000 | 000000 |
28mm | 36 | 2.030mm | 8mm | Finished | 8mm | 11.2mm | 17.5mm | 23.3mm | Molded | Polycarbonate | 17.5mm | 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. 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 with Set Screw | |||||||||||||
0.5 | 55 | 27.5 | 28 | 5 | 12 | 5 | Black-Oxide 1045 Carbon Steel | Not Hardened | 25 | 7 | M4 | 00000000 | 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.
1045 carbon steel worms have rolled threads. Hardened 1045 carbon steel worms have ground threads, which are more durable and precise than rolled threads.
303 stainless steel worms won’t rust in wet environments, so they’re commonly used in food-processing plants and other areas with frequent cleaning.
4140 alloy steel worms are already mounted on a shaft, so they’re ready to use with no machining required. The threads are ground into the shaft for higher precision than rolled threads, and hardened for additional durability and precision.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Pressure Angle | Worm Lg., mm | Gear Pitch Dia., mm | OD, mm | For Shaft Dia., mm | Number of Thread Starts | Dia., mm | Material | Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Set Screw Included | Each | |
Round Bore—Black-Oxide 1045 Carbon Steel | ||||||||||||||
1.5 | 20° | 40 | 25 | 28 | 8 | 1 | 20 | 1045 Carbon Steel | Right Hand | Not Hardened | Not Ground | No | 000000000 | 000000 |
1.5 | 20° | 40 | 25 | 28 | 8 | 2 | 20 | 1045 Carbon Steel | Right Hand | Not Hardened | Not Ground | No | 000000000 | 00000 |
1.5 | 20° | 40 | 25 | 28 | 10 | 1 | 20 | 1045 Carbon Steel | Right Hand | Hardened | Ground | No | 000000000 | 000000 |
Round Bore—303 Stainless Steel | ||||||||||||||
1.5 | 20° | 40 | 25 | 28 | 8 | 2 | 20 | 303 Stainless Steel | Right Hand | Not Hardened | Not Ground | No | 000000000 | 00000 |
Shaft | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Module | Pressure Angle | Worm Lg., mm | Gear Pitch Dia., mm | OD, mm | Dia., mm | Lg., mm | Number of Thread Starts | Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
4140 Alloy Steel | ||||||||||||
1.5 | 20° | 40 | 25 | 28 | 26 | 190 | 1 | Right Hand | Hardened | Ground | 000000000 | 0000000 |
Plastic 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. Made of plastic, they run quieter than metal gears and have good corrosion and chemical resistance. They’re 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.
For components to mesh correctly, they must have the same pressure angle and pitch/module.
Nylon gears can be operated without lubrication, so they’re commonly used in food-processing machines.
For technical drawings and 3-D models, click on a part number.