Excavator bearings include: excavator travel bearings, excavator slewing bearings, excavator needle bearings, excavator gearbox bearings, excavator travel motor bearings, excavator travel drive bearings, excavator joint bearings, excavator slewing support bearings and Inch non-standard bearings used on excavators.

The installation and disassembly method of the excavator bearing should be determined according to the structure, size of the excavator bearing and the matching nature of the excavator bearing components. The pressure of installation and disassembly should be directly applied to the end surface of the tightly fitted excavator bearing retainer ring, and the pressure cannot be transmitted through the excavator bearing rolling elements, because this will cause indentation on the working surface of the excavator bearing and affect the normal operation of the excavator bearing. It may even damage the bearings of the excavator. The retainer, sealing ring, dust cover and other parts of the excavator bearing are easily deformed, and the pressure for installing or disassembling the excavator bearing cannot be added to these parts.

Excavator bearing installation:

(1) Improper adjustment of the shifting device. If the transmission of this type of excavator adopts a mechanical manual shifting method, if the shift lever, vertical shaft, horizontal shaft and vertical fixing screws are loose, the transmission may also jump.

(2) Sudden change of external load Due to the nature of the excavator and its own design, a sudden change of external load will also cause its transmission to jump. When the road surface is uneven, the excavator is driving downhill or the driving route is improper and the external load suddenly changes, this sudden change of load will act on the gear meshing gears of the transmission through the wheels and drive shafts to make the gear meshes. The gears disengaged due to the axial thrust, causing the transmission to jump.

(3) The transmission mechanism of the shifting device of the excavator relies on the sliding gear sleeve to move axially on the fixed gear sleeve and mesh with the driven gears of each gear to achieve shifting. In the frequent shifting process, the tooth end surfaces of the aforementioned meshing gears are easily ground into a cone shape, which reduces their meshing performance and causes shifting.

(4) In order to prevent the transmission from shifting, the excavator is equipped with self-locking steel balls and springs in the box cover holes above the shift fork shaft and the reverse shift fork of the transmission. When the elasticity of the spring for positioning and self-locking is weakened or broken, the self-locking performance of the self-locking mechanism will decrease or disappear, causing the transmission to jump. At the same time, if the positioning steel ball or the groove on the fork shaft is worn out, it can also cause the transmission to jump.

(5) Improper operation method When the excavator is driving on a slope (especially driving downhill), if the operation is improper, it will also cause the transmission to skip.