You may have heard the question “what is a gear reducer and what is its intended use?” many times now. Or perhaps you are asking the same question. The best way to answer this inquiry is to explain what reduction gear is all about. Fundamentally, it is a gear set up in which an input speed can be altered or reduced for a specific requirement for slower output speed while still having the same output. The incoming torque from the wheelwork is being transmitted to the rotating gears where it can be changed.
Usually, the number of gears used in a gear reducer assembly or a reduction gearbox depends on the speed requirement of a particular application. The use of this device in machinery can be very simple or complex. For example, in the case of a ship with high-speed turbines, in order to achieve high efficiency, the ship’s steam turbine must work at a high rpm range. Conversely, the propeller should work at a relatively low rpm. This is a perfect scenario where a gear reduction takes action to change the high speed from the steam turbine into a low range needed by the ship’s propeller.
Gear reducer comes in two major categories - single reduction gear and double reduction gear. The single reduction gear is made up of ports where the engine and the propeller shafts enter. It is the pinion that drives the larger gear attached to the propeller shaft. Normally, a single reduction gear has a gear with twice as big as the pinion. On the other hand, the double reduction gear is ideal to use in applications that need very high speeds. A flexible coupling is used to mount the pinion to the input shaft, which is then connected to the first reduction gear, also known as the intermediate gear. Ultimately, this type of gear reduction setup allows for a high ratio of speed reduction of up to 20:1.
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