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Number of Teeth Number of Teeth | Hide |
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For Shaft Diameter For Shaft Diameter |
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OD OD |
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Material Material |
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Bore Type Bore Type |
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Overall Width Overall Width |
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Hub Diameter Hub Diameter |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Sprocket Type Sprocket Type |
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Component Component |
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 | Gear |
About Roller Chain and Sprockets
More
About Gears
More
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 | |
| 70 | 1/2" | 5.72" | 3/4" | 2" | __ | __ | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 5/8" | 5.72" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 3/4" | 5.72" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 7/8" | 5.72" | 3/4" | 2" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 1" | 5.72" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 1 1/4" | 5.72" | 3/4" | 2" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 1 3/8" | 5.72" | 3/4" | 2" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
| 70 | 3/4" | 11.43" | 1 1/4" | 4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 0000000 |
| 70 | 7/8" | 11.43" | 1 1/4" | 4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1" | 11.43" | 1 1/4" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 1/4" | 11.43" | 1 1/4" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 3/8" | 11.43" | 1 1/4" | 4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 1/2" | 11.43" | 1 1/4" | 4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
Keyway | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Number of Teeth | For Shaft Dia. | OD | Overall Wd. | Hub Dia. | Wd. | Dp. | Material | Includes | Each | |
| 70 | 3/4" | 11.43" | 1 3/16" | 4" | 3/16" | 3/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1" | 11.43" | 1 3/16" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 1 1/4" | 11.43" | 1 3/16" | 4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 1 3/8" | 11.43" | 1 3/16" | 4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 00000 |
| 70 | 1 1/2" | 11.43" | 1 3/16" | 4" | 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 | |
| 70 | 1" | 14.29" | 1 3/4" | 3 3/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 0000000 |
| 70 | 1 1/8" | 14.29" | 1 3/4" | 3 3/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 3/16" | 14.29" | 1 3/4" | 3 3/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 1/4" | 14.29" | 1 3/4" | 3 3/4" | 1/4" | 1/8" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 3/8" | 14.29" | 1 3/4" | 3 3/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 7/16" | 14.29" | 1 3/4" | 3 3/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 1/2" | 14.29" | 1 3/4" | 3 3/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 5/8" | 14.29" | 1 3/4" | 3 3/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 3/4" | 14.29" | 1 3/4" | 3 3/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 15/16" | 14.29" | 1 3/4" | 3 3/4" | 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 | |
| 70 | 1 3/8" | 17.15" | 1 3/4" | 4 1/4" | 5/16" | 5/32" | Steel | Two Set Screws | 00000000 | 0000000 |
| 70 | 1 7/16" | 17.15" | 1 3/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 1/2" | 17.15" | 1 3/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 5/8" | 17.15" | 1 3/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 3/4" | 17.15" | 1 3/4" | 4 1/4" | 3/8" | 3/16" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 1 15/16" | 17.15" | 1 3/4" | 4 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 2" | 17.15" | 1 3/4" | 4 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 2 3/16" | 17.15" | 1 3/4" | 4 1/4" | 1/2" | 1/4" | Steel | Two Set Screws | 00000000 | 000000 |
| 70 | 2 7/16" | 17.15" | 1 3/4" | 4 1/4" | 5/8" | 5/16" | Steel | Two Set Screws | 00000000 | 000000 |
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 DIN, ISO 08B Roller Chain (12.7 mm Pitch) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 70 | 19 | 64 | 290.4 | 35 | 100 | Steel | DIN 8187, ISO 606 | 00000000 | 0000000 |
For DIN, ISO 10B Roller Chain (15.88 mm Pitch) | |||||||||
| 70 | 25 | 64 | 363.02 | 44 | 95 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For DIN, ISO 12B Roller Chain (19.05 mm Pitch) | |||||||||
| 70 | 32 | 70 | 436.36 | 45 | 110 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
Flat Sprockets for Metric Roller Chain
With metric teeth and slim profile, these sprockets allow your ISO roller chain to reach narrow spaces. They're commonly referred to as A-plate sprockets. Machine the unfinished bore to fit your shaft—sprockets come machined to the shaft diameter listed and are machinable up to the maximum shaft diameter size. Sprockets meet DIN 8187 and ISO 606, international standards for sprockets and roller chains.
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 | Material | Specifications Met | Each | |
For ISO 06B Roller Chain (9.525 mm Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 70 | 18 | 203 | 217.42 | 6 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 08B Roller Chain (12.7 mm Pitch) | ||||||||
| 70 | 18 | 270 | 289.81 | 8 | Steel | DIN 8187, ISO 606 | 00000000 | 00000 |
For ISO 10B Roller Chain (15.875 mm Pitch) | ||||||||
| 70 | 24 | 337 | 362.97 | 9 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 12B Roller Chain (19.05 mm Pitch) | ||||||||
| 70 | 32 | 407 | 434.85 | 12 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 16B Roller Chain (25.4 mm Pitch) | ||||||||
| 70 | 40 | 543 | 580.9 | 17 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 20B Roller Chain (31.75 mm Pitch) | ||||||||
| 70 | 40 | 679 | 725.93 | 19 | Steel | DIN 8187, ISO 606 | 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 10B Roller Chain (15.88 mm Pitch) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 70 | 32 | 85 | 363.52 | 60 | 130 | Steel | DIN 8187, ISO 606 | 000000 | 0000000 |
Taper-Lock Bushing-Bore Sprockets for Metric Roller Chain
While their teeth fit into metric ISO roller chain, these sprockets use taper-lock bushings to grip shafts. That means you can switch to a different diameter shaft by changing the bushing instead of machining the sprocket. Bushings mount flush inside these sprockets; secure them in place by tightening the set screws included with the bushings. These sprockets have an extended hub that makes them more stable and durable than flat sprockets. All 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 Bushing Style | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Specifications Met | Each | |
For ISO 06B Roller Chain (9.53 mm Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 70 | 1610 | 217.42 | 25 | 82.55 | Steel | DIN 8187, ISO 606 | 00000000 | 0000000 |
For ISO 08B Roller Chain (12.7 mm Pitch) | ||||||||
| 70 | 2012 | 289.81 | 32 | 90 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 10B Roller Chain (15.88 mm Pitch) | ||||||||
| 70 | 2517 | 362.97 | 44 | 107.95 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 12B Roller Chain (19.05 mm Pitch) | ||||||||
| 70 | 2517 | 434.85 | 44 | 107.95 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
For ISO 16B Roller Chain (25.4 mm Pitch) | ||||||||
| 70 | 3020 | 580.9 | 51 | 133.35 | Steel | DIN 8187, ISO 606 | 00000000 | 000000 |
| Number of Teeth | For Bushing Style | OD, mm | Overall Wd., mm | Hub Dia., mm | Material | Specifications Met | Each | |
For ISO 06B-2 Roller Chain (9.53 mm Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 70 | 1610 | 217.42 | 25 | 92.08 | Steel | DIN 8187, ISO 606 | 00000000 | 0000000 |
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.
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. Gears with a clamping bore have a built-in clamp that securely grips shafts without marring them. Use the included clamping screw to tighten or loosen the grip.
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 | Clamping Screw Thread Size | Each | |
Round Bore | ||||||||||||||
| 1 | 70 | 70 | 72 | 10 | 20 | 10 | 303 Stainless Steel | Not Hardened | 50 | 10 | __ | __ | 00000000 | 0000000 |
| 1.5 | 70 | 105 | 108 | 15 | 25 | 15 | Black-Oxide 1045 Carbon Steel | Not Hardened | 55 | 10 | __ | __ | 00000000 | 00000 |
| 1.5 | 70 | 105 | 108 | 15 | 29 | 15 | 303 Stainless Steel | Not Hardened | 70 | 14 | __ | __ | 00000000 | 000000 |
Round Bore with Set Screw | ||||||||||||||
| 0.5 | 70 | 35 | 36 | 3 | 10 | 6 | Brass | __ | 28 | 7 | M4 | __ | 00000000 | 00000 |
| 0.5 | 70 | 35 | 36 | 5 | 12 | 6 | Black-Oxide 1045 Carbon Steel | Not Hardened | 28 | 7 | M4 | __ | 00000000 | 00000 |
| 0.8 | 70 | 56 | 57 | 8 | 16 | 6 | Black-Oxide 1045 Carbon Steel | Not Hardened | 28 | 8 | M4 | __ | 00000000 | 00000 |
Clamping Bore with Clamping Screw | ||||||||||||||
| 0.5 | 70 | 35 | 36 | 5 | 15 | 8 | 303 Stainless Steel | Not Hardened | 19 | 10 | __ | M3 | 0000000 | 00000 |
| 1 | 70 | 70 | 72 | 6 | 20 | 10 | 303 Stainless Steel | Not Hardened | 24 | 14 | __ | M4 | 0000000 | 000000 |
High-Power Metal Gears
The helical teeth on these gears stay in contact for longer than straight teeth, which allows them to transmit higher loads at higher speeds than spur gears.
For gears to mesh correctly, they must have the same pressure angle and pitch. All of these gears transmit motion in a straight line—make sure to get one left-hand and one right-hand gear. To change speed and torque in your assembly, pair two gears with different numbers of teeth.
Standard helical components have a 21 1/2° helix angle so they only transmit motion in a straight line since the helix angle is so small. Made from alloy steel, these gears resist abrasion and are stronger than carbon steel gears. Their teeth are ground, so they're more precise than gears with rolled teeth. Pair them with a rack or a gear that has a different tooth direction.
Gears with hardened teeth have better wear resistance than gears with teeth that are not hardened.
For technical drawings and 3-D models, click on a part number.
Hub | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Module | Number of Teeth | Helix Angle | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Teeth Heat Treatment | Dia., mm | Wd., mm | Each | |
Left Hand | ||||||||||||
Round Bore—4140 Alloy Steel | ||||||||||||
| 1 | 70 | 21 1/2° | 70 | 72 | 8 | 18 | 12 | Hardened | 40 | 10 | 00000000 | 0000000 |
| 1.5 | 70 | 21 1/2° | 105 | 108 | 12 | 24 | 20 | Hardened | 60 | 12 | 00000000 | 000000 |
| 2 | 70 | 21 1/2° | 140 | 144 | 16 | 29 | 25 | Hardened | 70 | 13 | 00000000 | 000000 |
Right Hand | ||||||||||||
Round Bore—4140 Alloy Steel | ||||||||||||
| 1 | 70 | 21 1/2° | 70 | 72 | 8 | 18 | 12 | Hardened | 40 | 10 | 00000000 | 000000 |
| 1.5 | 70 | 21 1/2° | 105 | 108 | 12 | 24 | 20 | Hardened | 60 | 12 | 00000000 | 000000 |
| 2 | 70 | 21 1/2° | 140 | 144 | 16 | 29 | 25 | Hardened | 70 | 13 | 00000000 | 000000 |
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.
Acetal gears are best suited for use in light duty machines or for prototyping. Gears with a clamping bore secure to shafts with a clamping screw. They’re easily removed or adjusted without marring your shaft.
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.
Hub | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Module | Number of Teeth | Gear Pitch Dia., mm | OD, mm | Face Wd., mm | Overall Wd., mm | For Shaft Dia., mm | Material | Fabrication | Color | Dia., mm | Wd., mm | Clamping Screw Thread Size | Each | |
Round Bore | ||||||||||||||
| 0.5 | 70 | 35 | 36 | 3 | 8 | 6 | Acetal Plastic | Molded | White | 14 | 5 | __ | 00000000 | 00000 |
| 0.8 | 70 | 56 | 57.6 | 4 | 10 | 6 | Acetal Plastic | Molded | White | 15.5 | 6 | __ | 00000000 | 0000 |
| 1 | 70 | 70 | 72 | 6 | 14 | 8 | Acetal Plastic | Molded | White | 18 | 8 | __ | 00000000 | 00000 |
| 1 | 70 | 70 | 72 | 10 | 20 | 10 | Nylon Plastic | Machined | Blue | 40 | 10 | __ | 00000000 | 00000 |
| 1.5 | 70 | 105 | 108 | 15 | 25 | 12 | Nylon Plastic | Machined | Blue | 50 | 10 | __ | 00000000 | 00000 |
Clamping Bore | ||||||||||||||
| 0.5 | 70 | 35 | 36 | 5 | 13.5 | 5 | Acetal Plastic | Molded | White | 14 | 8.5 | M2.5 | 00000000 | 00000 |
| 1 | 70 | 70 | 72 | 6 | 16 | 8 | Acetal Plastic | Molded | White | 19 | 10 | M3 | 00000000 | 000000 |