1, the gap between the tooth tip of the wheel and the pump shell is generally not more than 25 mm, such as increased can be replaced gear; 2. The gap between the end of the wheel and the shell cover should generally be within the range of 0.08-1OMM. If the clearance size must be changed, the gasket thickness on the end cover can be adjusted; 3, the clearance between the axle and the bushing, generally should be within 0.03 a 0.05mm, such as excessive wear of the bushing, it will increase the center distance of the two gears, but also inevitably lead to the increase of m and radial clearance between the meshing tooth tendency. Therefore, the wear of the shaft sleeve must be replaced beyond the range; 4. Inclination clearance of gear meshing teeth is generally not allowed to exceed 0.20mm. If the meshing tooth wear has exceeded the range, the gear should be replaced. Secondly, it should be checked whether the increase of the lateral clearance caused by the wear of the sleeve teeth.

Reducer in the prime mover and working machine or actuator between the matching speed and transfer of torque, reducer is a relatively precise machinery, the purpose of using it is to reduce the speed, Guo MAO reducer is divided into gear reducer, worm reducer and planetary gear reducer; According to the transmission series can be divided into single stage and multistage reducer factory wheel shape can be divided into cylindrical gear reducer, bevel gear reducer and cone-cylindrical gear reducer; According to the layout of the transmission form can be divided into expansion type, split type and into shaft type reducer. Reducer is a kind of closed in the rigid shell of the gear drive, worm drive, gear - worm drive composed of independent parts, commonly used as the original moving parts and working machine between the deceleration transmission device. In the prime mover and working machine or actuator between the matching speed and transfer of torque, in modern machinery is widely used. Reducer is generally used in low speed high torque transmission device, the electric motor, internal combustion engine, or other high speed operating of power on the input shaft of the reducer gear of big gear on the output shaft gear mesh less to achieve the purpose of deceleration, ordinary there is few on the same principle of gear reducer and achieve ideal reduction effect, the size of the ratio of the number of teeth on the gears, transmission ratio.

Normally speaking, a mechanical equipment is usually composed of three parts: power engine, reducer and working mechanism. Some other machines and equipment work needs, there may be tilt control system and lubrication, lighting and other auxiliary systems. Precision planetary reducer is a kind of intermediate device that transmits the mechanical energy generated by the power machine to the relevant working mechanism.

The operating temperature of smooth oil in cycloid reducer should not exceed 90 degrees Celsius. High temperature will change the physical and chemical properties of oil. For example, reducing the viscosity of the smooth oil reduces the carrying capacity of the smooth oil film, which may lead to direct contact of the working tooth surface and the occurrence of tooth surface bonding.