high precision Slewing bearing should be used

there are strict requirements for precision rotation of the spindle, high precision Slewing bearing should be used, such as precision lathes, milling machines, boring, grinding grinding, aircraft engine, turbocharger, precision instruments selected C, D grade; coordinate boring machine, High-speed grinding elect B, C grade. Rolling easy maintenance, reliable, good starting performance at moderate speeds higher carrying capacity. Compared with the sliding bearing, radial bearing a larger size, poor damping capacity, high speed, low life sound bigger. Rolling in the special bearing (mainly radial force) usually consists of inner and outer rings, rolling and rolling element cage four parts.