Gear Racks | McMaster-Carr

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Gears and Gear Racks

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. They're also known as spur gears.

Metal Gears and Gear Racks—
14 1/2° Pressure Angle

A former industry standard, 14½° pressure angle gears are often found on older machinery.

High-Power Metal Gears

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For smooth, quiet operation at high speeds under heavy loads, helical gears have curved teeth that engage gradually and stay in contact longer than straight teeth.

Plastic Gears and Gear Racks—20° Pressure Angle

The current industry standard, gears with a 20° pressure angle have thicker, stronger teeth than gears with a 14½° pressure angle.

Plastic Gears and Gear
Racks—14 1/2° Pressure Angle

A former industry standard, 14½° pressure angle gears are often found on older machinery.

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)