Roller Chain Trade Size Roller Chain Trade Size |
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System of Measurement System of Measurement |
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For Shaft Diameter For Shaft Diameter |
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Bore Type Bore Type |
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| Finished | Machinable |
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| Round | Plain |
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| Keyed |
OD OD |
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ID ID |
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For Shaft Type For Shaft Type |
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For Roller Chain Strand Type For Roller Chain Strand Type |
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 | Double |
Overall Width Overall Width | Show |
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Overall Width Overall Width | Hide |
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Component Component |
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 | Gear |
For Belt Trade Size For Belt Trade Size |
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Hub Diameter Hub Diameter |
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Mount Type Mount Type |
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 | Press Fit |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Teeth Shape Teeth Shape |
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 | Trapezoidal |
Pressure Angle Pressure Angle |
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Number of Flanges Number of Flanges |
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About Roller Chain and Sprockets
More
About Gears
More
Sprockets for Double-Strand ANSI Roller Chain
These sprockets come machined to the shaft diameter size listed and are machinable up to the maximum shaft diameter size. All have hardened teeth for increased wear resistance and a long service life.
For technical drawings and 3-D models, click on a part number.
| Number of Teeth | For Shaft Dia. | For Max. Shaft Dia. | OD | Overall Wd. | Hub Dia. | Material | Each | |
For ANSI 35-2 Roller Chain (3/8" Pitch) | ||||||||
|---|---|---|---|---|---|---|---|---|
| 20 | 3/4" | 1 5/16" | 2.59" | 1 3/8" | 1 15/16" | Steel | 000000 | 000000 |
Quick-Grip Screw-Clamp Bushings
Also known as Trantorque bushings, these tighten with a twist of the collar nut—no screws needed. As you tighten the collar nut, the inner sleeve contracts onto the shaft and the outer sleeve expands to hold your sprocket, pulley, or gear.
For technical drawings and 3-D models, click on a part number.
| For Shaft Dia. | OD | Overall Wd. | Max. Torque, in.-lbs. | Each | |
Steel | |||||
|---|---|---|---|---|---|
| 3/4" | 1 1/4" | 1 3/8" | 1,500 | 0000000 | 000000 |
L Series Timing Belt Pulleys
Pulleys are L series (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 | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Hub Dia. | Each | |
For 1/2" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.156" | 16 | 0.375" | 1/2" | Finished | 0.563" | 0.75" | 1.375" | 1.91" | 2 | Sintered | Steel | 1.438" | 0000000 | 000000 |
| 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 1/2" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.391" | 18 | 0.375" | 1/2" | Plain | 0.563" | 0.75" | 1.375" | 2.149" | 2 | Sintered | Steel | 1.625" | 0000000 | 000000 |
| 2.625" | 20 | 0.375" | 1/2" | Plain | 0.563" | 0.75" | 1.375" | 2.387" | 2 | Sintered | Steel | 1.688" | 0000000 | 00000 |
L Series Corrosion-Resistant Timing Belt Pulleys
Pulleys are anodized aluminum, which is more corrosion resistant than steel. All are L series (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 | Inside Wd. | Outside Wd. | Overall Wd. | Pitch Dia. | Number of Flanges | Fabrication | Material | Hub Dia. | Each | |
For 1/2" Max. Belt Wd. | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2.875" | 22 | 0.375" | 1/2" | Finished | 0.55" | 0.719" | 1.375" | 2.626" | 2 | Machined | Anodized Aluminum | 2.125" | 0000000 | 000000 |
| 3.094" | 24 | 0.375" | 1/2" | Finished | 0.55" | 0.719" | 1.375" | 2.865" | 2 | Machined | Anodized Aluminum | 2.25" | 0000000 | 00000 |
| 3.33" | 26 | 0.375" | 1/2" | Finished | 0.58" | 0.75" | 1.375" | 3.104" | 2 | Machined | Anodized Aluminum | 2.25" | 0000000 | 00000 |
| 3.566" | 28 | 0.375" | 1/2" | Finished | 0.58" | 0.75" | 1.375" | 3.342" | 2 | Machined | Anodized Aluminum | 2.25" | 0000000 | 00000 |
| 3.8" | 30 | 0.375" | 1/2" | Finished | 0.58" | 0.75" | 1.375" | 3.581" | 2 | Machined | Anodized Aluminum | 2.25" | 0000000 | 00000 |
| 4.044" | 32 | 0.375" | 1/2" | Finished | 0.58" | 0.75" | 1.375" | 3.82" | 2 | Machined | Anodized Aluminum | 2.625" | 0000000 | 00000 |
| 4.52" | 36 | 0.375" | 1/2" | Finished | 0.58" | 0.75" | 1.375" | 4.297" | 2 | Machined | Anodized Aluminum | 3.5" | 0000000 | 00000 |
| 5" | 40 | 0.375" | 1/2" | Finished | 0.58" | 0.75" | 1.375" | 4.775" | 2 | Machined | Anodized Aluminum | 3.625" | 000000 | 00000 |
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 | 30 | 2 1/2" | 2.67" | 3/4" | 1.375" | 5/8"-1 5/16" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.625" | __ | __ | __ | 0000000 | 000000 |
| 12 | 32 | 2.667" | 2.83" | 3/4" | 1.375" | 5/8"-1 5/16" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.625" | __ | __ | __ | 0000000 | 00000 |
| 12 | 36 | 3" | 3.17" | 3/4" | 1.375" | 5/8"-1 1/2" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.625" | __ | __ | __ | 000000 | 00000 |
| 12 | 40 | 3.333" | 3.5" | 3/4" | 1.375" | 5/8"-1 1/2" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.625" | __ | __ | __ | 000000 | 00000 |
| 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 | 00000 |
Keyed Bore with Set Screw | |||||||||||||||
| 12 | 30 | 2 1/2" | 2.67" | 3/4" | 1.375" | 5/8" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 12 | 32 | 2.667" | 2.83" | 3/4" | 1.375" | 5/8" | 1144 Carbon Steel | Not Hardened | 2.25" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 12 | 36 | 3" | 3.17" | 3/4" | 1.375" | 5/8" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 12 | 40 | 3.333" | 3.5" | 3/4" | 1.375" | 5/8" | 1144 Carbon Steel | Not Hardened | 2.5" | 0.625" | 0.188" | 0.094" | 1/4"-20 | 0000000 | 00000 |
| 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 | 00000 |
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.
Cast iron gears are strong and durable.
Bronze gears have low friction and dissipate heat better than cast iron gears to provide a long service life for both the gear and the worm. They’re also more corrosion resistant than cast iron gears.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Speed Ratio | Number of Teeth | Pressure Angle | Gear Pitch Dia. | For Number of Thread Starts | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Dia. | Wd. | Material | For Thread Direction | Teeth Heat Treatment | Teeth Fabrication | Each | |
Round Bore—Cast Iron | |||||||||||||||||
| 10 | 20:1 | 20 | 14 1/2° | 2" | 1 | 2.22" | 5/8" | 1.375" | 1/2" | 1.25" | 0.75" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
| 10 | 30:1 | 30 | 14 1/2° | 3" | 1 | 3.22" | 5/8" | 1.375" | 5/8" | 1.75" | 0.75" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
| 10 | 40:1 | 40 | 14 1/2° | 4" | 1 | 4.22" | 5/8" | 1.375" | 5/8" | 1.75" | 0.75" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
| 10 | 50:1 | 50 | 14 1/2° | 5" | 1 | 5.22" | 5/8" | 1.375" | 3/4" | 2" | 0.75" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
| 10 | 100:1 | 100 | 14 1/2° | 10" | 1 | 10.22" | 5/8" | 1.375" | 3/4" | 2.5" | 0.75" | Cast Iron | Right Hand | Not Hardened | Not Ground | 000000000 | 000000 |
Round Bore—Bronze | |||||||||||||||||
| 10 | 50:1 | 50 | 14 1/2° | 5" | 1 | 5.24" | 5/8" | 1.375" | 3/4" | 1.94" | 0.75" | Bronze | Right Hand | Not Hardened | Not Ground | 000000000 | 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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Fabrication | Color | Dia. | Wd. | Each | |
Round Bore | |||||||||||||
| 16 | 30 | 1 7/8" | 2" | 7/8" | 1.375" | 63/64" | Nylon Plastic | Molded | White | 1.625" | 0.5" | 00000000 | 000000 |