Helical Gear Speed Reducers
Provide high-efficiency speed reduction through 1, 2, 3, or 4 models of gears. Power is transmitted from a high-acceleration pinion to a slower-speed gear. Helical gears usually operate with their shafts parallel to one another. The two most common types will be the concentric (input and result shafts are in range) 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 lower speeds and higher ratios are needed, dual, triple, and quadruple gear reduction stages may be used.
Worm Gear Speed Reducers
A single reduction speed reducer can achieve up to a 100:1 reduction ratio in a small package. Referred to as right position drives, these consist of a cylindrical worm with screw threads and a worm. With a single start worm, the worm equipment advances only 1 tooth for every 360-degree change of the worm. So, whatever the worm’s size, the gear 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 increase or reduce speed. Because of this, torque output will be the inverse of the function. If the enclosed drive is definitely a rate reducer, the torque result increase; if the drive increases speed, the torque result will decrease. Gear drive selection elements include: shaft orientation, quickness ratio, design type, nature of load, gear rating, environment, mounting position, working temperature range, and lubrication.
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