Component Component |
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![]() | Gear |
System of Measurement System of Measurement |
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Gear Type Gear Type |
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![]() | Helical |
Pitch Pitch | Show |
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Pitch Pitch | Hide |
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Bore Type Bore Type |
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![]() | Keyed |
Material Material |
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Helical Gear Style Helical Gear Style |
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Helix Angle Helix Angle |
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Teeth Heat Treatment Teeth Heat Treatment |
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Tooth Direction Tooth Direction |
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Set Screw Thread Size Set Screw Thread Size |
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Pressure Angle Pressure Angle |
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More
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.
Crossed helical gears, also known as screw gears, can be configured to transmit motion at a 90° angle. To transmit motion at a 90° angle, pair two gears with the same tooth direction. To avoid wearing down gears, which happens when you use the same material, we recommend mating gears with different materials. Carbon steel gears are stronger than 303 stainless steel gears but are not as corrosion resistant.
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 | Keyway | ||||||||||||||
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Pitch | Number of Teeth | Helix Angle | Pitch Dia. | OD | Face Wd. | Overall Wd. | For Shaft Dia. | Teeth Heat Treatment | Dia. | Wd. | Wd. | Dp. | Set Screw Thread Size | Each | |
Left Hand | |||||||||||||||
Keyed Bore with Set Screw—1137 Carbon Steel | |||||||||||||||
17 | 12 | 45° | 1" | 1.12" | 3/4" | 1.25" | 1/2" | Hardened | 0.84" | 0.5" | 0.125" | 0.062" | 1/4"-20 | 0000000 | 000000 |
17 | 18 | 45° | 1.5" | 1.62" | 3/4" | 1.25" | 5/8" | Hardened | 1.34" | 0.5" | 0.187" | 0.094" | 1/4"-20 | 0000000 | 00000 |
17 | 24 | 45° | 2" | 2.12" | 3/4" | 1.25" | 5/8" | Hardened | 1.84" | 0.5" | 0.187" | 0.094" | 1/4"-20 | 0000000 | 00000 |
Right Hand | |||||||||||||||
Keyed Bore with Set Screw—1137 Carbon Steel | |||||||||||||||
17 | 12 | 45° | 1" | 1.12" | 3/4" | 1.25" | 1/2" | Hardened | 0.84" | 0.5" | 0.125" | 0.062" | 1/4"-20 | 0000000 | 00000 |
17 | 18 | 45° | 1.5" | 1.62" | 3/4" | 1.25" | 5/8" | Hardened | 1.34" | 0.5" | 0.187" | 0.094" | 1/4"-20 | 0000000 | 00000 |
17 | 24 | 45° | 2" | 2.12" | 3/4" | 1.25" | 5/8" | Hardened | 1.84" | 0.5" | 0.187" | 0.094" | 1/4"-20 | 0000000 | 00000 |