Spur Gear Boxes | McMaster-Carr

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623 Products

About Gears

Speed Reducers for Face-Mount AC Motors

Mount these gears to a NEMA motor. Spur gears minimize torque loss between your motor and drive shaft, making these speed reducers more efficient than our other speed reducers.

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.

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.

Rotary Speed Limiters

Install these rotary speed limiters at the hinges of small lids, doors, and access panels for smooth, quiet motion.