Gear motor miniature machine gear motor is located in the prime mover and an independent closed between gear, is used to reduce speed and increase torque accordingly. Gear motor is divided into two main categories: geared motor and worm gear motor. The gear reduction motor mainly divided into cylindrical gear reducer motor, cone gear reduction motor, cone & ndash; —Cylindrical gear reduction motor. The characteristics of the gear reduction motor is the efficiency and reliability, long working life, convenient maintenance, application and so on. The gear reduction motor series can be divided into single-stage and two-stage and triple geared motor, gear reduction motor installation arrangement mainly has exploded, coaxial and shunt. Two-stage expansion of cylindrical gear reduction motor, gear position relative to the supporting asymmetry, when the deformation of the shaft of the bending and twisting, load in the uneven distribution of tooth width, so the shaft should be designed with larger stiffness, and makes the gear from the input or output. Two levels of cylindrical gears reduction motor shunt type: the characteristics of shunt type of overhanging deceleration motor shaft position by either side, convenient for the machine's overall configuration, shunt level are done helical gear, right-handed and left-handed, to offset the axial force, should be one of the shaft axial winding, can do a bit to avoid stuck gear. Coaxial gear reduction motor features: compact radial size, but the axial size is bigger. Due to large intermediate shaft, shaft at the time of loading of the one song is bigger, so along the tooth width of load concentration phenomenon more serious. At the same time as the center of the two stage gear must be consistent, so tell level gear bearing capacity is difficult to make full use of, and, in the middle part of the bearing lubrication slowdown is more difficult. Deceleration of the motor at both ends of the input and output terminal is located in the same axis, bring the overall configuration of gearing.