VA703585N 

VA.VSA Series slewing ring bearing
  • VA.VSA Series slewing ring bearing
  • VA.VSA Series slewing ring bearing

VA703585N -VA.VSA Series slewing ring bearing

The VA and VSA series are single-row, four-point contact ball slewing bearings featuring an external gear on the outer ring. These series are precision-engineered for applications that demand higher rotational accuracy, greater rigidity, and smoother operation compared to standard industrial slewing bearings.


Typical Applications:

Radar and antenna positioning systems

Precision rotary tables and indexing equipment

Medical equipment (e.g., CT scanners, radiotherapy devices)

Solar tracking systems requiring high pointing accuracy

Robotics and automation equipment



High load-carrying capacity
Resistance to high and low temperatures
Noise-free operation
Strictly controlled tolerances and appropriate internal clearance
Long service life and low maintenance requirements
Prevention of unexpected downtime (avoiding bearing fracture, seizure, and safety incidents caused by such failures, with anti-tilting capability)

Dimension and Parameters

VA.VSA Series slewing ring bearing
Type :VA703585N 
Brand :LYMC
Boundary Dimension
Da[mm] :3867.1
di[mm] :3400
H[mm] :154
Mounting Dimension
La[mm] :3710
Li :3460
n1 :124
n2 :124
φ1 :33
φ2 :33
Structure Size
b :140
h :14
B :140
C :140
Di :3582
da :3588
Gear Information
m :18
z :213
do :3834
Rated Axial Static Load :23300
Weight [KGS] :

Characteristics

✦ Four-point contact ball design – Single-row configuration handles axial, radial, and tilting moment loads in one raceway.

✦ External gear on outer ring – Teeth cut on the outer ring allow direct pinion engagement for rotary drive and positioning.

✦ Ready-to-mount – Both rings come with pre-drilled mounting holes (threaded or through) for bolted installation.

✦ Standardized clearances – Radial clearance 0 to 0.05 mm, axial tilting clearance 0 to 0.08 mm across the series.

✦ Induction-hardened teeth – Gear teeth are heat-treated for wear resistance and bending strength.

✦ Compact cross-section – Uniform 56 mm section height throughout the series, with ring widths at 44.5 mm.

✦ Broad size range – Bore diameters from 342 mm to 1,024 mm, covering medium to large rotary applications.


Features

✦ External gear on outer ring – Direct pinion engagement for rotary motion.

✦ Four-point ball contact – Handles axial, radial, and moment loads together.

✦ Ready-to-mount – Pre-drilled holes for bolted installation.

✦ Hardened gear teeth – Wear-resistant and durable.

✦ Compact section height – Uniform 56 mm profile.

✦ Standardized clearances – Consistent radial and tilting gap specs.

✦ Wide diameter range – Fits bore sizes from 342 mm to 1,024 mm.


Further Reading