Excavator bearing introduction

There are many types of excavator bearings. Different types of excavator-specific bearings are used according to different parts of the excavator. The following types of excavator-specific bearings are used:

Excavator travel bearing;

Excavator slewing bearing;

Excavator needle roller bearing;

Excavator gearbox bearing;

Excavator travel motor bearing;

Excavator travel drive bearing;

Excavator joint bearing;

Excavator slewing bearing;

Inch non-standard bearings used on excavators;

For the use and maintenance of excavator bearings, it is also necessary to use caution.

The method of installation and disassembly of the excavator bearing shall be based on the structure and size of the excavator bearing and the mating nature of the excavator bearing components. The pressure of installation and disassembly should be directly added to the end face of the tightly matched excavator bearing ring. The pressure can not be transmitted through the excavator bearing rolling element, because it will cause indentation on the working surface of the excavator bearing and affect the normal operation of the excavator bearing. It can even damage the excavator bearings. Parts such as cages, seals, and dust caps of excavator bearings are easily deformed, and the pressure to install or remove the excavator bearings cannot be added to these parts.

(1) Improper adjustment of the shifting device. If the transmission of the excavator adopts the mechanical manual shifting mode, if the shifting lever, the longitudinal shaft, the horizontal shaft and the vertical fixing screw are loose, the transmission may be "jumped". Variable speed drive wear

(2) sudden change in external load due to the nature of the work of the excavator and the machine

Excavator bearing

The design of the excavator's bearing body, sudden changes in the external load will also cause its transmission "jump". When the road surface is uneven, the excavator is downhill or the driving route is improper, and the external load suddenly changes, the sudden change of the load will act on the gear meshing gear of the transmission through the wheel and the transmission shaft, so that the gear meshes. The gear is disengaged due to the axial thrust, causing the transmission to "jump". Self-locking mechanism performance degradation

(3) The transmission mechanism of the shifting device of the excavator relies on the sliding toothed sleeve to move axially on the fixed toothed sleeve and engage with the driven gear of each gear to realize the shifting. In the frequent shifting process, the end faces of the gear teeth of the above-mentioned meshing gears are easily ground into a taper, resulting in a decrease in the meshing performance and a "jump".

(4) In order to prevent the transmission from "jumping", the excavator is self-locking in the cover hole of the II, III and IV, V shift fork shafts of the transmission and in the I and reverse shift forks. Steel balls and springs. When the spring that is positioned and self-locking is weakened or broken, the self-locking performance of the self-locking mechanism will decrease until it disappears, causing the transmission to "jump". At the same time, if the groove on the positioning steel ball or the fork shaft wears, it can also cause the transmission to "jump".

(5) Improper operation method When the excavator is driving on a slope (especially when driving downhill), if it is not operated properly, it will also cause the transmission to "jump".

Excavator bearing model

BA152-2036 bearing

BA222-1WSA bearing

BA220-6SA bearing

BA240-3ASA bearing

SF4815VPX1 bearing

SF4831PX1 bearing

AC5033 bearing

AC5836 bearing

AC463240 bearing

HS5145 bearing

HSO5154 bearing

HSO5383 bearing