The Flooring Expert

Ball slewing ring is lubricated every 100 hours ,roller slewing ring is lubricated every 50 hours.Fill the raceway with grease till it is seeping from the seals.Also check the pre-tightening force of slewing ring , must keep enough pre-tightening force.

Give you attention to the runing slewing ring,you should stop it to check when noise,impulsion or other problem unable to run .Trouble shooting and guarantee the operation will not have any problem.

About cleaning,it can not cleaning with water directly , prevent water into the raceway, prevent hard object or debris into the raceway and lead to the teeth of slewing ring teeth mismatch.
Slewing bearing generally includes mounting holes, lubricants hole and sealing devices.

Slewing bearing forms include single row four-point contact ball bearings, double row ball bearing, single row crossed roller bearing and three rows of cylindrical roller bearing .

1. Single row four-point contact ball bearings has the high dynamic load capacity,main application dynamic mechanical which requirements higher dynamic.Such as crane, excavator and so on.

2. Double row ball bearings and three row roller bearing , due to improve the carrying capacity of attention to the bearing height direction, various load respectively by different raceway and roller group, so under the same loading condition, so it make the host more compactly, it is a kind of high bearing capacity slewing ring.

3. Single row crossed roller bearing has high Static load capacity ,main application the stillness equipment at work.And four-point contact ball slewing bearing just opposite.

Three row roller bearing due to the large size of axial and radial,it is main application heavy duty machinery.such as ship crane,ladle turret and heavy duty mobile machinery
Slewing ring can use in different industries, but in all cases will cause the damage of the slewing ring, and the damage was found in the slewing bearing, but don”t know where the damage, can only be found damage to comprehensive anatomy.

During the disassembly of slewing bearing, the outer ring of slewing bearing connected the upper part of machinery, the inner ring of slewing bearing connected the down part of machinery. Cleaning the seal and lifting the machinery separate, then take the screws and bolts out.

Take out the steel ball and isolation block and inspection on steel ball and isolation, if isolation block have crack or damage please replacement timely.Clean the steel ball and in the sun light to watch, you can see clearly if there has pitting or pits on the steel ball.