Worm Gears

Worm Gears, also known as Wheel Gearboxes, are driven by an input shaft rotating on an axis that is at 90 degrees to the output shaft axis. Both worm and wheel have special thread profiles allowing the worm to effectively push/pull the wheel around as it rotates.

Worm gear systems offer the opportunity to obtain very large gear ratios with very few moving parts, making them particularly suitable for systems requiring high reliability and low maintenance. The design of a worm gear virtually eliminates the possibility of back driving.

Worm drive gearboxes are available in a variety of options including zero backlash and one or two input shafts, which allow parallel linear actuators to be connected by a common shaft.

Worm Gears

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Thomson