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Martin Worm Gear, 14.5 Degree Pressure Angle, Cast Iron, Inch

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Product Specifications
Number of Items
Bore Diameter Tolerance
+ .001 - .000  inches
Material Type
Cast Iron
Part Number
Number of Teeth
Brand Name
System of Measurement
Face Width
Unk  inches

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Currently showing 1-8 of 8
1.5 inches 1.687 inches 1/2 inches B004BDOEF4 yes $56.94 Buy Options
1.667 inches 1.853 inches 1/2 inches B004BDOEFE yes $58.34 Buy Options
2.5 inches 2.687 inches 1/2 inches B004BDOEFO yes $64.73 Buy Options
3.333 inches 3.52 inches 5/8 inches B004BDOEG8 yes $74.13 Buy Options
4.166 inches 4.353 inches 5/8 inches B004BDOEHM yes $91.10 Buy Options
5 inches 5.187 inches 5/8 inches B004BDOEI6 yes $99.29 Buy Options
6.666 inches 6.853 inches 5/8 inches B004BDOEIQ yes $116.07 Buy Options
8.333 inches 8.52 inches 3/4 inches B004BDOEJ0 yes $70.13 Buy Options

Key Features

  • Right-hand, single-thread gear for a worm drive
  • ASTM A48 Class 30 gray cast iron for resistance to wear, galling, and corrosion
  • Pressure angle of 14.5 degrees for smoother, quieter movement and lower frictional forces
  • Meets AGMA commercial class standards

Product Description

This Martin worm gear is a right-hand, single-thread gear for a worm drive to increase the torque of a driven shaft. It is made of American Society for Testing and Materials (ASTM) A48 Class 30 gray cast iron for resistance to wear, galling, and corrosion on. It has a pressure angle of 14.5 degrees for smoother, quieter movement and lower frictional forces. This gear meets American Gear Manufacturing Association (AGMA) standards 6-8 for commercial class gears.

Worm gears, also called worm drives, use a long, threaded cylinder called a worm that meshes with the teeth of a worm wheel (similar to a spur gear) to transmit motion. They can be used in a right-angle configuration. The worm wheel is unable to turn the worm, providing a built-in lock or a braking system. They are quieter than spur gears, low maintenance, and suitable in applications that require increased torque and reduced speed, or when changing the rotation direction.

Martin Sprocket & Gear manufactures power transmission products, material handling components, and industrial hand tools. The company, founded in 1951 and headquartered in Arlington, TX, meets International Organization for Standardization (ISO) standard 9001:2008.

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