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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 | |
42 | 3/4" | 6.97" | 1 1/8" | 3 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 7/8" | 6.97" | 1 1/8" | 3 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1" | 6.97" | 1 1/8" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 1/8" | 6.97" | 1 1/8" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 3/16" | 6.97" | 1 1/8" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 1/4" | 6.97" | 1 1/8" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 3/8" | 6.97" | 1 1/8" | 3 1/2" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 7/16" | 6.97" | 1 1/8" | 3 1/2" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 1/2" | 6.97" | 1 1/8" | 3 1/2" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
Keyway | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
42 | 3/4" | 6.97" | 1 1/16" | 3 1/2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1" | 6.97" | 1 1/16" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 1/4" | 6.97" | 1 1/16" | 3 1/2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
42 | 1 1/2" | 6.97" | 1 1/16" | 3 1/2" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 00000 |
Keyway | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
42 | 3/4" | 8.72" | 1 1/4" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 0000000 |
42 | 7/8" | 8.72" | 1 1/4" | 3 1/4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1" | 8.72" | 1 1/4" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 1/8" | 8.72" | 1 1/4" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 3/16" | 8.72" | 1 1/4" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 1/4" | 8.72" | 1 1/4" | 3 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 3/8" | 8.72" | 1 1/4" | 3 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 7/16" | 8.72" | 1 1/4" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 1/2" | 8.72" | 1 1/4" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 5/8" | 8.72" | 1 1/4" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 3/4" | 8.72" | 1 1/4" | 3 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 15/16" | 8.72" | 1 1/4" | 3 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
Keyway | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
42 | 1" | 10.46" | 1 1/4" | 4 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 0000000 |
42 | 1 1/8" | 10.46" | 1 1/4" | 4 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 3/16" | 10.46" | 1 1/4" | 4 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 1/4" | 10.46" | 1 1/4" | 4 1/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 3/8" | 10.46" | 1 1/4" | 4 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 7/16" | 10.46" | 1 1/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 1/2" | 10.46" | 1 1/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 5/8" | 10.46" | 1 1/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 3/4" | 10.46" | 1 1/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 1 15/16" | 10.46" | 1 1/4" | 4 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 2" | 10.46" | 1 1/4" | 4 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 2 3/16" | 10.46" | 1 1/4" | 4 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
42 | 2 7/16" | 10.46" | 1 1/4" | 4 1/4" | 5/8" | 5/16" | Steel | Two Set Screws | 00000000 | 000000 |
Sprockets for Double-Strand Metric Roller Chain
The double row of teeth on these sprockets are designed to fit into metric ISO double-strand roller chain. They have an unfinished bore that’s machined to the shaft diameter size listed. Machine them to fit any shaft up to the maximum shaft diameter size. The extended hub makes these sprockets more stable and more durable than flat sprockets. They meet ISO 606 (formerly DIN 8187), which is an international standard for sprocket and roller chain dimensions and materials.
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 08B-2 Roller Chain (12.7 mm Pitch) | |||||||||
---|---|---|---|---|---|---|---|---|---|
42 | 20 | 73 | 177.31 | 45 | 110 | Steel | DIN 8187, ISO 606 | 0000000 | 0000000 |
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 | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Material | Hub Dia. | Each | |
For 3/8" Max. Belt Wd. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
With Hub | ||||||||||||
2.654" | 42 | 0.200" | 5/16" | Finished | 0.563" | 1" | 2.674" | Machined | Anodized Aluminum | 1.5" | 0000000 | 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. | |||||||||||||||
Inch | |||||||||||||||
2.91" | 42 | 0.200" | 5/16" | Finished | 0.5" | 0.625" | 0.813" | 2.674" | 2 | Molded | Acetal | Aluminum | 0.875" | 00000000 | 000000 |
Metric | |||||||||||||||
74mm | 42 | 5.000mm | 10mm | Finished | 13mm | 16mm | 22mm | 67.92mm | 2 | Molded | Acetal | Aluminum | 22mm | 0000000 | 00000 |
XL Series Timing Belt Pulleys
Pulleys 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 | Number of Teeth | Pitch | For Shaft Dia. | Bore Type | Outside Wd. | Overall Wd. | Pitch Dia. | Fabrication | Hub Dia. | Each | |
For 3/8" Max. Belt Wd. | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
2.654" | 42 | 0.200" | 5/16" | Finished | 0.563" | 1" | 2.674" | Sintered | 1.5" | 00000000 | 000000 |
MXL Series Corrosion-Resistant Timing Belt Pulleys
Anodized aluminum has good corrosion resistance. Pulleys 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. | Number of Flanges | Fabrication | Material | Hub Dia. | Each | |
For 1/8" Max. Belt Wd. | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1.26" | 42 | 0.080" | 1/4" | Finished | 0.16" | 0.276" | 0.531" | 1.07" | 2 | Machined | Anodized Aluminum | 0.806" | 0000000 | 000000 |
For 1/4" Max. Belt Wd. | ||||||||||||||
1.26" | 42 | 0.080" | 1/4" | Finished | 0.29" | 0.405" | 0.719" | 1.07" | 2 | Machined | Anodized Aluminum | 0.806" | 0000000 | 00000 |
For 3 mm Max. Belt Wd. | ||||||||||||||
32mm | 42 | 2.030mm | 6mm | Finished | 4mm | 7mm | 13.5mm | 27.2mm | 2 | Machined | Anodized Aluminum | 20.5mm | 00000000 | 00000 |
For 6 mm Max. Belt Wd. | ||||||||||||||
32mm | 42 | 2.030mm | 6mm | Finished | 7.2mm | 10.3mm | 18.3mm | 27.2mm | 2 | Machined | Anodized Aluminum | 20.5mm | 00000000 | 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.
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 1/4" Max. Belt Wd. | |||||||||||||
1.24" | 42 | 0.080" | 1/4" | Finished | 0.28" | 0.438" | 0.688" | 1.07" | Molded | Polycarbonate | 0.688" | 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.
Stainless steel gears and racks resist rust in damp and wet environments, so they're commonly used in food-processing plants and other areas with frequent cleaning.
For technical drawings and 3-D models, click on a part number.
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 | |||||||||||||||
12 | 42 | 3 1/2" | 3.67" | 3/4" | 1.375" | 5/8"-1 1/2" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.625" | __ | __ | __ | 000000 | 000000 |
Keyed Bore with Set Screw | |||||||||||||||
12 | 42 | 3 1/2" | 3.67" | 3/4" | 1.375" | 5/8" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 000000 |
Plastic 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 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.
For technical drawings and 3-D models, click on a part number.
Round/Machinable
Bore
Hub | Keyway | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Fabrication | Color | Dia. | Wd. | Wd. | Dp. | Each | |
Round Bore | |||||||||||||||
48 | 42 | 7/8" | 0.91" | 1/8" | 0.375" | 1/4" | Nylon Plastic | Molded | White | 0.438" | 0.25" | __ | __ | 00000000 | 000000 |
Keyed Bore | |||||||||||||||
16 | 42 | 2 5/8" | 2.75" | 5/8" | 0.875" | 13/32" | Nylon Plastic | Molded | White | 1.375" | 0.25" | 0.125" | 0.063" | 00000000 | 00000 |