Slew Ring Grease

In slewing ring bearings a heavy duty extreme pressure grease is required.

Slew ring grease.

Fill in the slewing bearing grease. Slewing bearing is normally used ep ii extreme pressure ii lithium ester. The grease must entirely cover the flanks of the pinion and of the ring gear whether applying by brush or spraying. New grease must be added before and after the machine has been shut down for a long time.

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. Typically slewing ring bearings are used in excavators crane wind power turbine and other oscillating service. Later fine cracks develop followed by flaking.

Before deliver from the factory the slewing bearing is filled with a small amount of ep ii. This video shows how i got access to the 360 degree slew gear ring on a jcb micro digger it was found to be lacking grease and covered in dirt i was the. 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. The lubrication must be filled with grease in each race until it seeps out from the seal.

Inadequate lubrication is the most common cause of premature bearing failures. We recommend retightening the fasteners after the first two to four months of utilization and then proceeding to a systematic yearly check. More than 96 of slewing ring failure could be avoided by following simple maintenance tips. Pump grease into the bearing until you see old grease squeeze past the seal.

When filling grease slowly turn the slewing ring to make the grease fill evenly. Consisting of rings mounted with threaded fasteners and usually having a gear integral with one of the rings. The slewing rings are essentially working in fatigue. Lubrication is especially important in the maintenance of slewing bearings.