21 Inch Four-Point Contact 528x732x80mm Ball Slewing Ring Bearing - inside Gear Outer Diameter - 74mm S61803 bearing is made from

S61803 bearing is made from stainless steel with Ceramic Balls (Si3N4) and Stainless steel cage

delivering smooth rotation

SMSK60GW Bearing

FHBR203-17mm commonly assembled in pressed steel housings

accurate movement

21 Inch Four-Point Contact 528x732x80mm Ball Slewing Ring Bearing - inside Gear Outer Diameter - 74mm S61803 bearing is made from21 Inch Four Point Contact 528x732x80 mm Ball Slewing Ring Bearing with inside Gear Four Point Contact Ball Slewing Bearing with inside Gear A slewing bearing ring is a rotational rolling element bearing that typically supports a heavy but slow turning or slow oscillating load, often a horizontal platform such as a conventional crane, or the wind facing platform of a horizontal axis windmill. (To 'slew' means to turn without change of place.) Item