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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.
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.
Hub | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch  | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Teeth Heat Treatment | Dia. | Wd. | Set Screw Thread Size | Each | |
Round Bore | |||||||||||||
| 32 | 12 | 3/8" | 0.44" | 3/16" | 0.438" | 1/8" | Brass | __ | 0.28" | 0.25" | __ | 0000000 | 000000 |
| 32 | 14 | 0.438" | 0.5" | 3/16" | 0.438" | 1/8" | Brass | __ | 0.34" | 0.25" | __ | 0000000 | 00000 |
| 32 | 16 | 1/2" | 0.56" | 3/16" | 0.438" | 3/16" | Brass | __ | 0.4" | 0.25" | __ | 0000000 | 00000 |
| 32 | 20 | 5/8" | 0.69" | 3/16" | 0.438" | 3/16" | Brass | __ | 0.47" | 0.25" | __ | 0000000 | 00000 |
| 32 | 24 | 3/4" | 0.81" | 3/16" | 0.438" | 3/16" | Brass | __ | 0.53" | 0.25" | __ | 0000000 | 00000 |
| 32 | 28 | 7/8" | 0.94" | 3/16" | 0.438" | 3/16" | Brass | __ | 0.59" | 0.25" | __ | 0000000 | 00000 |
| 32 | 36 | 1 1/8" | 1.19" | 3/16" | 0.438" | 1/4" | Brass | __ | 0.72" | 0.25" | __ | 0000000 | 00000 |
| 32 | 40 | 1 1/4" | 1.31" | 3/16" | 0.438" | 1/4" | Brass | __ | 0.72" | 0.25" | __ | 0000000 | 00000 |
| 32 | 48 | 1 1/2" | 1.56" | 3/16" | 0.438" | 1/4" | Brass | __ | 0.78" | 0.25" | __ | 0000000 | 00000 |
Round Bore with Set Screw | |||||||||||||
| 32 | 20 | 5/8" | 0.69" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
| 32 | 24 | 3/4" | 0.81" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
| 32 | 32 | 1" | 1.06" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
| 32 | 36 | 1 1/8" | 1.19" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
| 32 | 48 | 1 1/2" | 1.56" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
| 32 | 64 | 2" | 2.06" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 00000 |
| 32 | 72 | 2 1/4" | 2.31" | 3/16" | 0.437" | 1/4" | 303 Stainless Steel | Not Hardened | 0.5" | 0.25" | 6-32 | 0000000 | 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 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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Material | Teeth Heat Treatment | Dia. | Wd. | Set Screw Thread Size | Each | |
Round Bore | |||||||||||||
| 32 | 18 | 0.563" | 0.63" | 3/16" | 0.5" | 3/16" | 1117 Carbon Steel | Not Hardened | 0.406" | 0.313" | __ | 0000000 | 000000 |
| 32 | 20 | 5/8" | 0.69" | 3/16" | 0.5" | 1/4" | 1117 Carbon Steel | Not Hardened | 0.531" | 0.313" | __ | 0000000 | 00000 |
| 32 | 24 | 3/4" | 0.81" | 3/16" | 0.5" | 5/16" | 1144 Carbon Steel | Not Hardened | 0.656" | 0.313" | __ | 0000000 | 00000 |
| 32 | 40 | 1 1/4" | 1.31" | 3/16" | 0.563" | 3/8" | 1144 Carbon Steel | Not Hardened | 0.875" | 0.375" | __ | 0000000 | 00000 |
Round Bore with Set Screw | |||||||||||||
| 32 | 16 | 1/2" | 0.56" | 3/16" | 0.5" | 3/16" | 1117 Carbon Steel | Not Hardened | 0.406" | 0.313" | 4-40 | 0000000 | 00000 |
| 32 | 20 | 5/8" | 0.69" | 3/16" | 0.5" | 1/4" | 1117 Carbon Steel | Not Hardened | 0.52" | 0.31" | 10-32 | 00000000 | 00000 |
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.
Acetal gear racks absorb less water than nylon racks, so they’re less likely to swell.
For technical drawings and 3-D models, click on a part number.
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 | |||||||||||||
| 32 | 12 | 3/8" | 0.44" | 3/16" | 0.5" | 5/32" | Acetal Plastic | Molded | White | 0.281" | 0.313" | 0000000 | 00000 |
| 32 | 24 | 3/4" | 0.81" | 3/16" | 0.5" | 3/16" | Acetal Plastic | Molded | White | 0.5" | 0.313" | 0000000 | 0000 |
| 32 | 32 | 1" | 1.06" | 3/16" | 0.5" | 1/4" | Acetal Plastic | Molded | White | 0.625" | 0.313" | 0000000 | 0000 |
| 32 | 36 | 1 1/8" | 1.19" | 3/16" | 0.5" | 1/4" | Acetal Plastic | Molded | White | 0.609" | 0.313" | 0000000 | 0000 |
| 32 | 48 | 1 1/2" | 1.56" | 3/16" | 0.5" | 1/4" | Acetal Plastic | Molded | White | 0.625" | 0.313" | 0000000 | 0000 |
| 32 | 96 | 3" | 3.06" | 3/16" | 0.5" | 5/16" | Acetal Plastic | Molded | White | 0.813" | 0.313" | 0000000 | 0000 |
| Gear Pitch | Lg. | Pitch Ht. | Ht. | Face Wd. | Material | Fabrication | Color | Each | |
| 32 | 1 ft. | 0.156" | 3/16" | 3/16" | Acetal Plastic | Molded | Gray | 0000000 | 00000 |
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 | |||||||||||||
| 32 | 12 | 3/8" | 0.44" | 3/16" | 0.375" | 1/8" | Nylon Plastic | Molded | White | 0.25" | 0.188" | 00000000 | 000000 |
| 32 | 14 | 0.438" | 0.5" | 3/16" | 0.438" | 1/8" | Nylon Plastic | Molded | White | 0.313" | 0.25" | 00000000 | 00000 |
| 32 | 16 | 1/2" | 0.56" | 3/16" | 0.438" | 3/16" | Nylon Plastic | Molded | White | 0.375" | 0.25" | 00000000 | 00000 |
| 32 | 18 | 0.563" | 0.63" | 3/16" | 0.438" | 3/16" | Nylon Plastic | Molded | White | 0.375" | 0.25" | 00000000 | 00000 |
| 32 | 20 | 5/8" | 0.69" | 3/16" | 0.438" | 3/16" | Nylon Plastic | Molded | White | 0.5" | 0.25" | 00000000 | 00000 |
| 32 | 22 | 0.688" | 0.75" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.563" | 0.25" | 00000000 | 00000 |
| 32 | 24 | 3/4" | 0.81" | 3/16" | 0.438" | 3/16" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 28 | 7/8" | 0.94" | 3/16" | 0.438" | 3/16" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 32 | 1" | 1.06" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 36 | 1 1/8" | 1.19" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 40 | 1 1/4" | 1.31" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 48 | 1 1/2" | 1.56" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 52 | 1 5/8" | 1.69" | 3/16" | 0.438" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 00000 |
| 32 | 62 | 1.938" | 2" | 1/4" | 0.625" | 3/8" | Nylon Plastic | Molded | White | 0.625" | 0.375" | 00000000 | 00000 |
| Gear Pitch | Lg. | Pitch Ht. | Ht. | Face Wd. | Material | Fabrication | Color | Each | |
| 32 | 1ft. | 0.156" | 3/16" | 3/16" | Nylon Plastic | Molded | White | 00000000 | 00000 |
Plastic Miter Gears
Connect two shafts at a right angle without changing shaft speed or torque. Made of plastic, these gears run quieter than metal gears and have good corrosion and chemical resistance.
For two gears to mesh correctly, they must have the same pressure angle, pitch/module, and number of teeth.
Nylon gears are self-lubricating, so they’re often used in food machinery. However, they’re not approved for direct contact with food or chemicals that will come into contact with food.
For technical drawings and 3-D models, click on a part number.
Hub | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gear Pitch | Number of Teeth | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Material | Fabrication | Color | Dia. | Wd. | Each | |
Round Bore | |||||||||||||||
| 32 | 16 | 20° | 1/2" | 0.55" | 0.11" | 0.344" | 3/16" | 0.5" | Nylon Plastic | Molded | White | 0.406" | 0.188" | 0000000 | 000000 |
| 32 | 24 | 20° | 3/4" | 0.8" | 0.16" | 0.406" | 3/16" | 0.688" | Nylon Plastic | Molded | White | 0.5" | 0.188" | 0000000 | 00000 |
Gear Rod Stock
Machine your own gears to fit the exact face width and shaft diameter required. Rod stock has teeth with a 20° pressure angle, the current industry standard. 20° pressure angle gears have thicker, stronger teeth than 14½° pressure angle gears. Teeth are not hardened so you can machine and harden them to fit your application. Hardening a gear’s teeth increases its wear resistance. Also known as spur gear rod stock.
For gears to mesh correctly, they must have the same pressure angle and pitch.
For technical drawings and 3-D models, click on a part number.
| Gear Pitch | Number of Teeth | Gear Pitch Dia. | OD | Lg. | For Shaft Dia. | Material | Each | |
| 32 | 12 | 3/8" | 0.44" | 1 ft. | 1/32"-7/32" | 1215 Carbon Steel | 0000000 | 000000 |
| 32 | 20 | 5/8" | 0.69" | 1 ft. | 1/32"-11/32" | 1215 Carbon Steel | 0000000 | 00000 |
| 32 | 32 | 1" | 1.06" | 1 ft. | 1/32"-17/32" | 1215 Carbon Steel | 0000000 | 00000 |
| 32 | 40 | 1 1/4" | 1.31" | 1 ft. | 1/32"-21/32" | 1215 Carbon Steel | 0000000 | 00000 |
Gear Tooth Pitch Identifiers
When replacing a gear, use these gauges to identify pressure angle, pitch, and module.
| For Gear Type | For System of Measurement | For Pitch | Number of Identifiers | Material | Each | |
For 14 1/2° Pressure Angles | ||||||
|---|---|---|---|---|---|---|
| Spur Gears | Inch | 6, 7, 8, 9, 10, 11, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 36, 40, 48, 64, 80 | 22 | Steel | 0000000 | 0000000 |
For 14 1/2° and 20° Pressure Angles | ||||||
| Spur Gears, Bevel Gears, Helical Gears, Miter Gears | Inch | 3, 4, 5, 6, 8, 10, 12, 16, 20, 24, 32 | 22 | Stainless Steel | 0000000 | 000000 |