It has three row raceway, the rolling element is steel roller. This structure could bear the heaviest load comparing to other structure bearing type. Usually the triple row roller slew bearing is used Triple-Row Roller Slewing Ring Bearing for some heavy duty machinery.

It is equipped with seat-rings, upper orbit.

Neither orbit and radial orbit is separated individually,

it makes the load of each row of the rollers can be confirmed, making it can undertake all kinds of different load simultaneously.

Its' carrying capacity is the biggest KOYO dac3055w Bearing among four models and the axial and radial size are rather large to some extent, the structure of the three row roller slewing bearing ring is very firm.

It is mainly made of 50Mn, 42CrMo, C45.