Friction value is permitted in the work of slewing bearing

Friction value less than 8 is permitted in the work of slewing bearing, please test the max value of different slewing bearings. Equally divided the slewing bearing into 8 parts and marked with 8 points, test each point in a group of three. Add suitable tilting torque on point

1, axial force on point

2, radial force on point

3, and record the value. Later test it again, and friction loss is the difference value of two times. It’s must to change new slewing bearing if the difference value is too big to over data of relevant provisions.