About Gears
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Metal Miter Gears
With straight, conically shaped teeth and a 1:1 speed ratio, miter gears connect two shafts at an angle without changing shaft speed or torque. They're more efficient than spiral miter gears because they create less friction.
For two gears to mesh correctly, they must have the same pressure angle, shaft angle, pitch/module, and number of teeth.
Carbon steel gears have hard, strong, and wear-resistant teeth. They’re best for heavy duty and high-torque applications, such as lifting equipment. However, these gears will rust when exposed to moisture or corrosive chemicals. Some gears have hardened teeth for additional wear resistance; 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 | Keyway | ||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Gear Pitch | Number of Teeth | For Shaft Angle | Pressure Angle | Gear Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Mounting Distance | Teeth Heat Treatment | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Each | |
Round Bore—1144 Carbon Steel | |||||||||||||||||
12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 3/8" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 000000 |
12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 1/2" | 1.25" | Not Hardened | 1" | 0.5" | __ | __ | __ | 0000000 | 00000 |
Keyed Bore with Set Screw—1144 Carbon Steel | |||||||||||||||||
12 | 15 | 90° | 20° | 1 1/4" | 1.37" | 0.27" | 0.859" | 1/2" | 1.25" | Hardened | 1" | 0.5" | 0.125" | 0.063" | 10-24 | 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 | |||||||||||||
48 | 64 | 1.333" | 1.37" | 1/8" | 0.375" | 1/4" | Nylon Plastic | Molded | White | 0.625" | 0.25" | 00000000 | 000000 |