Slew Ring Grease

More than 96 of slewing ring failure could be avoided by following simple maintenance tips.

Slew ring grease.

Inadequate lubrication is the most common cause of premature bearing failures. Apply a liberal shot of extreme pressure grease to the fittings around the bearing s circumference at intervals recommended in the operator s manual. When lubrication is inadequate surface damage in the form of roughening or waviness occurs. Pump grease into the bearing until you see old grease squeeze past the seal.

The slewing rings are essentially working in fatigue. Typically slewing ring bearings are used in excavators crane wind power turbine and other oscillating service. When filling grease slowly turn the slewing ring to make the grease fill evenly. The grease must entirely cover the flanks of the pinion and of the ring gear whether applying by brush or spraying.

In slewing ring bearings a heavy duty extreme pressure grease is required. Slewing bearing is normally used ep ii extreme pressure ii lithium ester. Lubrication is especially important in the maintenance of slewing bearings. Before deliver from the factory the slewing bearing is filled with a small amount of ep ii.

Later fine cracks develop followed by flaking. Consisting of rings mounted with threaded fasteners and usually having a gear integral with one of the rings. In case of some slewing ring bearings fatigue may occur due to improper internal lubrication. Watch his brief video and learn from jeff payne caterpillar maintenance expert how to maintain the swing bearing and swing gear on your cat hydraulic exca.

When begin use it the user should fill into full new grease which could make sure the slewing bearing works in good function. New grease must be added before and after the machine has been shut down for a long time. Fill in the slewing bearing grease. We recommend retightening the fasteners after the first two to four months of utilization and then proceeding to a systematic yearly check.