Eight causes of excavator slewing bearing fever

Slewing bearing is a relatively large mechanical parts, in daily use, there may be heating, and if this situation can’t be solved in time, the damage to the bearing is relatively large, then how to correctly solve the problem of heating.

Cause 1: the bearing size of the slewing bearing is too large, so the bearing will be tight.

Solution: provide proper tolerance for bearings, and it is strictly prohibited to be too tight.

Cause 2: aluminum three layer ring sealing ring friction caused by heat.

Solution: grease should be applied when installing sealing holes and rings to reduce friction resistance.

Cause 3: too much grease or too high oil level applied to the slewing bearing.

Solution: The slewing bearing will remove excess grease through the sealing hole.

Cause 4: improper type of grease or lubricating oil leads to lubricant failure.

Solution: Choose the right type of oil again.

Cause 5: low oil level, insufficient grease.

Solution: the oil level outside the shaft diameter should be just lower than the cage, fill with appropriate grease.

Cause 6: the inner ring and sealing ring friction heat.

Solution: stop the machine and check the clamping ring screw to ensure that the inner ring is firmly attached to the shaft, that the free end bearing is installed correctly, and that the roller is aligned with the center line of the outer ring.

Above is about the cause of the fever of the slewing bearing and solve method is introduced, the cause of rotary bearing overheating, of course, there are many, in order to ensure the normal use of slewing bearing, when you encounter rotary bearing overheating phenomenon, able to stop in time to check, find out the reason and processing, prevent the rotary bearing shorten service life.