Cause analysis of slewing bearing heating

Slewing ring is a kind of accessory which is used more and more now. In the process of daily use, it will cause heat to the bearing. If this kind of

situation can not be solved in time, it will be a great harm to the bearing. Today, I will introduce to you what kind of situation will cause the

slewing ring to have heating and how to deal with it correctly.

Possible reason 1: the shaft size of slewing ring is too large, so the bearing will be tight

Solution: provide proper tolerance for the shaft and do not over tighten.

Possible reason 2: the aluminum three-layer ring seal has friction and causes heat

Solution: in the installation of the seal hole and ring should be coated with grease to reduce friction resistance.

Possible reason 3: too much grease or too high oil level on slewing bearing seat

Solution: the slewing bearing will remove the excess grease through the seal hole, and the oil level will be reduced to just below the bearing box.

Possible cause 4: lubricant failure due to improper type of grease or oil

Solution: re select the appropriate lubricating oil type.

Possible cause 5: low oil level and insufficient grease

Solution: the oil level on the outside of the shaft diameter should be just lower than the cage, and add appropriate grease.

Possible cause 6: friction heat between inner ring and seal ring

Solution: at this time, stop the machine and check the clamping ring screw to ensure that the inner ring is firmly attached to the shaft, and that

the free end bearing is installed correctly, and the roller is aligned with the center line of the outer ring.