In particular, pay attention to ensure the matching tolerance of the shaft and the inner hole of the felt ring. The gearboxes are all equipped with vents in structure. Therefore, when installing the gearbox and the motor, be sure to find the alignment and leveling to ensure that they are concentric. Therefore, the amount of oil must be appropriate and cannot be added. In this way, part of the oil flows back to the oil pool, and part of the oil leaks out of the box along the shaft through the bearing.

For the oil leakage of the non-shaft extension cover, the main reason is that the clearance between the end cover and the box body is large. And a drainage hole communicating with the felt groove is opened on the end cover. The circumferential speed of the large gear in the reduction box of the crane is generally not large.The guide plate is as large as possible in its rotation range, so that as little oil as possible enters the bearing. This structure of the reducer is used when the diameter of the gear is not much different from the diameter of the shaft.. It is the base of transmission parts and should have sufficient strength and rigidity.

The upper box cover and the lower box body are connected together by bolts.The reducer is mainly composed of transmission parts (gear or worm), shaft, bearing, box and accessories. In order to simplify the process and reduce the cost of a single-piece reducer,China Explosion-proof Gear motors Manufacturers a steel plate welded box can be used. The box is an important part of the reducer.

Deep groove ball bearings are used for both shafts. At this time, the gear and the shaft are fixed in the circumferential direction by a flat key connection, and the parts on the shaft are axially fixed by the shaft shoulder, shaft sleeve and bearing cover.

The bottom surface of the lower box seat of the reducer adopts two longitudinal strips to process the base surface. The box is usually made of gray cast iron, and cast steel box can also be used for the reducer with heavy load or impact load. In order to avoid the possibility of splashing thin oil from falling off the grease, it can be separated by a stopper. The pinion and the shaft are made into one body, called the gear shaft. 

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