VSI250855N slewing ring bearing SI.6.25.0855 G1 JINB

VSI250855N slewing ring bearing SI.6.25.0855 G1 JINB

VSI200414N slewing ring bearing SI.6.20.0414 G1 JINB

VLI200744N slewing ring bearing VI.20.0744 G1 JINB

 To "slew" means to turn without change of place; a "slewing" bearing is a rotational rolling-element bearing, compared to other rolling-element bearings, slewing bearings are thin in section and are often made in diameters of a metre or more.
Slewing bearings often use one row, two rows,and triple rows of rolling elements. They often use three race elements, such as an inner ring and two outer ring "halves" that clamp together axially.