Both the VA and VSA series consist of an inner ring, an outer ring with integral external teeth, and a single row of steel balls. The raceways are precision-ground to a geometry that ensures each ball contacts the raceways at four distinct points. This four-point contact configuration enables the bearing to simultaneously support axial loads (in both directions), radial loads, and tilting moments – all within a single, compact row of rolling elements.

The external gear is machined directly on the outer ring, allowing direct pinion drive coupling. This simplifies the transmission system, reduces component count, and improves overall drive efficiency. Both rings are provided with mounting holes for straightforward bolted installation.

Precision and Rigidity

What distinguishes the VA and VSA series from other four-point contact bearings is their emphasis on precision. The raceways are ground to tighter tolerances, and the internal clearance is carefully controlled to provide higher rotational accuracy and greater system rigidity. This makes the series particularly suitable for applications where positioning accuracy, low runout, and smooth motion are critical.

Performance Highlights

• High rotational accuracy: Precision-ground raceways ensure low friction and consistent motion

• Enhanced rigidity: Tighter clearance control and optimized raceway geometry provide stable support under load

• Combined load capability: Handles axial, radial, and moment loads simultaneously in a single row

• Smooth operation: Low friction and high-quality surface finish reduce vibration and noise

• Easy integration: External gear and mounting holes simplify system assembly