减速器是一种由封闭在刚性壳体内的齿轮传动、蜗杆传动、齿轮-蜗杆传动所组成的独立部件，常用作原动件与工作机之间的减速传动装置 。在原动机和工作机或执行机构之间起匹配转速和传递转矩的作用，在现代机械中应用极为广泛。

The reducer is an independent component  of gear transmission， worm drive and gear worm drive enclosed in a rigid shell. It is often used as a deceleration between the original and the working machines. The matching speed and transfer torque between prime movers and working machines or actuators are widely applied in modern machines.

允许输入法兰：

不能大于或小于临级减速机的标准尺寸，reducer生产厂家，如减速机PLE80?的标准法兰为80mm，reducer，其临级的减速级是PLE60?和PLE120，PLE80?允许法兰不应小于60mm，也不能大于120mm。

Allow input flange

It can"t be greater than or less than the standard  of the reducer. For example， the standard flange of reducer PLE80 is 80mm， and the deceleration stage of its reducer is PLE60? PLE120， PLE80? The maximum allowable flange should not be less than 60mm， nor greater than 120mm.

安装前确认电机和减速机是否完好无损，并且严格检查电机与减速机相连接的各部位尺寸是否匹配，reducer购买，这里是电机的定位凸台、输入轴与减速机凹槽等尺寸及配合公差。

Before installation， confirm whether the motor and reducer are in good condition， and strictly check whether the size of each part of the motor connected to the reducer is match. Here is the size and fit tolerance of the motor"s locating lug， input shaft and reducer groove.

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