Three row roller slewing ring has three blocks from top to bottom and separate radial raceway , making each row roller can be determined exactly , which can bear a variety of loads at the same time and its load capacity is the largest one among the models.

Because of the size of the axle and radius ,it is sturdy and especially suitable for heavy duty machines , which require large working radius ,such as bucket wheel excavator , wheel cranes , ship cranes, ladle turret , heavy duty mobile crane etc .