Characteristics of slim ball bearing

(1) the friction coefficient is small and steady, easy to start. In general, f=0.001-0.002 slim ball bearing, roller bearing needle f=0.001-0.003, f=0.002, f=0.003 thrust ball bearings, thrust roller bearings f=0.004.
(2) the small axial dimension. Guide roller, guide, slider, linear bearings, miniature ball bearings series of deep groove ball bearing series needle roller (roller) bearings, thrust ball bearings
(3) the radial clearance is small, can be preloaded.
(4) lubrication, easy maintenance.
(5) some bearings can bear both circumferential and radial force, simple structure.
 (6)Excavator Slewing Bearing impact bearing ability is poor, the radial size, high speed when there is noise, short service life.