Helical Gear Speed Reducers
Provide high-efficiency speed reduction through 1, 2, 3, or 4 pieces of gears. Power is transmitted from a high-velocity pinion to a slower-speed gear. Helical gears generally operate with their shafts parallel to one another. The two most common types will be the concentric (input and output shafts are in series) and parallel shaft (input and output shafts are offset). Single-stage helical equipment reducers are typically used for equipment ratios up to about 8:1. Where decrease speeds and higher ratios are necessary, double, triple, and quadruple equipment reduction stages can be used.

Worm Gear Speed Reducers
A single reduction velocity reducer can achieve up to 100:1 decrease ratio in a small package. Known as right position drives, these contain a cylindrical worm with screw threads and a worm. With a single start worm, the worm equipment advances only one tooth for every 360-degree convert of the worm. So, regardless of the worm’s size, the apparatus ratio is the ‘size of the worm equipment to 1′. Higher reduction ratios could be created through the use of double and triple decrease ratios.

Basic Types of Gearboxes

The purpose of a gearbox is to improve or reduce speed. Consequently, torque output will be the inverse of the function. If the enclosed drive is certainly a velocity reducer, the torque output increase; if the drive raises speed, the torque output will reduce. Gear drive selection factors include: shaft orientation, acceleration ratio, design type, character of load, gear ranking, environment, mounting position, operating temperature range, and lubrication.

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