Slew Ring Grease

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

Slew ring grease.

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. Typically slewing ring bearings are used in excavators crane wind power turbine and other oscillating service. Slewing bearing is normally used ep ii extreme pressure ii lithium ester. Pump grease into the bearing until you see old grease squeeze past the seal.

The grease must entirely cover the flanks of the pinion and of the ring gear whether applying by brush or spraying. The lubrication must be filled with grease in each race until it seeps out from the seal. More than 96 of slewing ring failure could be avoided by following simple maintenance tips. Lubrication is especially important in the maintenance of slewing bearings.

Inadequate lubrication is the most common cause of premature bearing failures. Fill in the slewing bearing grease. In case of some slewing ring bearings fatigue may occur due to improper internal lubrication. Before deliver from the factory the slewing bearing is filled with a small amount of ep ii.

Later fine cracks develop followed by flaking. The slewing rings are essentially working in fatigue. New grease must be added before and after the machine has been shut down for a long time. When filling grease slowly turn the slewing ring to make the grease fill evenly.

We recommend retightening the fasteners after the first two to four months of utilization and then proceeding to a systematic yearly check. Apply a liberal shot of extreme pressure grease to the fittings around the bearing s circumference at intervals recommended in the operator s manual. Slewing bearing grease analysis. When begin use it the user should fill into full new grease which could make sure the slewing bearing works in good function.