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How To Differentiate The Various Types Of Gearboxes Sometimes, repairs can get complicated when you do not know what type of gearbox is affected. Key factors such as speed, gear ratio, noise, torque, pressure and the orientation of the shafts are just some that will help differentiate the gearboxes. Here are the various gearbox types that you need to know. Considered as the simple and typical type of gearbox available is the spur gearbox. High gear ratios are possible for this gearbox because of the position of the radial teeth which efficiently works 94 to 98 percent level. A drawback to this type of gearbox is the various noises and pressure it creates. But despite the noise, spur gearbox is ideal for low-speed and low-impact jobs. Helical gearbox is another type that is much alike with the spur gears. Its difference is the position of the teeth in which it is not lateral to the rotating axis but rather positioned angular at 90 degrees. It is laid out in a parallel way or crossed positioned. There is slow engagement between the teeth of a helical gear thus producing no noise when being worked. Therefore, helical gearbox is desirable for high torques as it provides 98 percent level of efficiency. The disadvantage of this is the degree of medial thrust that requires an adequate amount of oil to the shaft bearings.
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A type of gearbox that is composed of cone-formed teeth with two crossing shafts is the bevel gearbox. This produces a versatile movement in between the shafts. The axes of the bevel gearbox is able to bear significantly high pressures. The level of efficiency of a bevel gearbox can do a 97 percent level of work. It is the appropriate system for low gear ratios and low speed works.
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Spiral bevel and hypoid bevel are two sub-types of bevel gearboxes. Helical and spiral bevel have similarities which is the slow motion of the teeth. Therefore, both systems run smoothly producing less noise. It also produces the same high level of work efficiency reaching at 98 percent. Hypoid bevel gears are similar to spiral bevel but the shape of the teeth are hyperbolic which does not allow the axis to touch each other. Its high level of drive shaft, which is 90 degrees, make it powerful and useful for high speed ratio works, in addition to the quiet work it also produces. But regarding its efficiency, it only produces 85 percent of work. The planetary gearbox is another type as it is created similar to a planet systems with gears or planets revolving around a sun or another gear. This system runs at a low speed and produces a work efficiency of 98 percent. Each stage, this compact system produces a high gear differential and can also provide a higher amount of torque, three times than the spur gears. This is due to the sharing of load between the planets. Each gearbox has its ideal use for various tools and produce a different level of work load and efficiency. To reach such efficiency, it must also be maintained and repaired when necessary.