Helical Gear Speed Reducers
Provide high-efficiency speed decrease through 1, 2, 3, or 4 pieces of gears. Power is transmitted from a high-swiftness pinion to a slower-speed gear. Helical gears right angle worm gearbox generally operate with their shafts parallel to one 
another. The two most common types are the concentric (input and output shafts are in collection) and parallel shaft (input and result shafts are offset). Single-stage helical gear reducers are usually used for equipment ratios up to about 8:1. Where decrease speeds and higher ratios are necessary, double, triple, and quadruple gear reduction stages may be used.
Worm Gear Speed Reducers
A single reduction acceleration reducer can achieve up to a 100:1 decrease ratio in a little package. Known as right angle drives, these contain a cylindrical worm with screw threads and a worm. With a single begin worm, the worm equipment advances only one tooth for every 360-degree convert of the worm. So, whatever the worm’s size, the apparatus ratio may be the ‘size of the worm gear to 1′. Higher reduction ratios can 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. Because of this, torque output will be the inverse of the function. If the enclosed drive is usually a velocity reducer, the torque output will increase; if the drive raises speed, the torque result will decrease. Gear drive selection elements include: shaft orientation, swiftness ratio, design type, character of load, gear ranking, environment, mounting position, operating temperature range, and lubrication.