Single-row ball slewing ring Basic data (Q Series):

 The single-row four points contact ball Slewing Bearing is composed of 2 seat-rings.It features compact in design,and light in weight.

The balls contact with the circular race at four points,via which the axial force,radial force and resultant moment may be born simultaneously.

It may be used for slewing conveyers,welding arms and positioners,light,medium duty cranes,excavators and other engineering machines.

 Material:50Mn 42CrMo

 Module of Gear(max) 12-20

1--Type of slewing ring Single-row ball Q Series

2-- Code of driven type

W.Outer teeth,N.Inner teeth,U.No- teeth

3--Code of installation hole type

A.Both rings with installation bolt holes 

B.Both rings with screw holes

C.Outer rings with installation screw holes,inner ring with intallation bolt holes

D.Outer ring with  intallation bolt holes,inner ring with intallation screw holes

4--Dia.of track center,mm

5--Dia.of roller ball,mm

6--Classification code No.of gear module

 A.bigger module,without ,A.normal

7--precision grade

High precision,without G.normal

  Single-row ball,bigger module,outer gear,Outer ring with installation screw holes,inner ring with installation bolt holes,Dia.of track center 1250mm,Dia.of ball 40mm

OEM supplier for Excavator for your reference, nice quality