The three-row roller slewing bearing has three seat-rings,which separate the upper,lower and radial races,via which the load of each row of the rollers may be specified.It may bear different loads simultaneously and its load capacity is the largest one among the four models.
Thanks to the large size of its axle and radius,it is sturdy and especially suitable for heavy-duty machines which require large working radius.such as bucket-wheel excavators,wheeled cranes,ship cranes,ladle turrets,heavyduty mobile cranes etc.

Note:

1.nl-number of lubricating holes,evenly distributed,lubricating nipple M10*1 JB/T7940.1-JB/T7940.2.

2.Mounting hole n-??,may be replaced with screw hole,tooth width b may be taken as H-h.

3.Gear force of periphery given in the table is its maximum value,nominal force of periphery is taken 1/2 of the given value.

4.The trim top coefficient of outer and inner tooth 0.1 and 0.2 respectively.