Reducer (speed): a gear drive that achieves a reduction with a fixed drive ratio. Often installed in the case to be an independent part. Because of its compact structure, high efficiency, accurate and reliable transmission movement, good lubrication, long service life, simple maintenance and mass production, the reducer is widely used in modern machines.
Many kinds of reducer according to the drive type, a gear reducer, worm reducer, worm gear reducer, planetary gear reducer; transmission series, 1 level and 2 level, 3 level and multi-level reducer; according to the position of the axis, horizontal and vertical reducer; according to the power transmission line there are points, expansion, and coaxial shunt type reducer. Reducer box should have sufficient stiffness to avoid excessive deformation after loading affect the transmission quality, usually made of gray cast iron, a small amount of production can be used when welding structure, mass production of small reducer can be used as sheet metal. Lubricating gear speed reducer drive using oil bath lubrication, for heavy duty and high speed transmission should be used for lubrication; bearing lubrication by splash lubrication (circumferential speed of 2 ~ 3 M / s or above) or scraping lubrication (circumferential speed of 2 ~ 3 M / s below). In addition, similar to the reducer, in a few occasions also use the speeder, it is enclosed in the box, with fixed transmission ratio gear speed increasing gear.