As an important part in many mechanisms, cross-roller rotary bearing can be used. For crane rotary mechanism, cross-roller rotary bearing is also indispensable. It not only plays the role of connecting the boarding and chassis parts, but also supports the whole rotating part of crane.

That is to say, once the steel ball of the cross-roller rotary disk bearing is damaged and the raceway is worn, it will affect the work of the crane's rotary mechanism. In serious cases, heavy rotation and noise may occur. At the same time, the pressure of the rotary hydraulic system will exceed the rated value.

In this case, it is necessary to repair or replace the cross roller bearing in the crane rotary mechanism, and the general reason for the mechanical failure is that the maintenance of the cross roller bearing is not enough and improper use. Therefore, in order to prevent the crane slewing support from running normally, we must pay attention to the daily maintenance and maintenance of cross roller rotary disk bearings.

Especially when the crane is working in the environment with strong corrosiveness and dust, or after the rainwater has dripped, it should be wiped in time, and the slideway should be filled with a suitable amount of lubricant to meet the requirements, and some rust-proof oil should be coated on the outside.

At the same time, the oil injection nozzle should be dredged regularly to prevent blockage; the tightness of bolts should be checked everywhere to prevent the wear of steel balls and raceways caused by excessive clearance between upper and lower slideways due to bolt loosening, so as to prolong the service life of cross roller turntable bearings and ensure the normal operation of crane rotary mechanism.