RA9008 cross roller bearing specifications:

* RA…UU is two sides sealed type.

More RA cross roller bearing models

RA9008|RA9008UU crossed roller bearing features:

1. Integrated inner ring with separable outer ring.

2. Sustain radial, axial and moment loads at the same time.

3. High rigidity & running accuracy.

4. Ultra-thin section, space saving and reduce the overall weight of the device.

FAQ

1. What is the MOQ for this model RA9008?
There is no MOQ for bearing models in stock, and low MOQ for custom design. Please contact us for details.

2. Why the preload type RA cross roller bearings are widely selected?

Because RA9008UU bearing with preload (clearance -0.008~0 mm) can improve bearings rotation accuracy, increase stiffness, improve the bearing’s damping and reduce noise. Check “Prelaod of crossed roller bearings” for more detailed info.

RA9008 cross roller bearing installation instructions

Cautions: For crossed roller bearings with split outer ring, when the rigidity of the mounting parts is not sufficient, stress concentration will occur at the contact area between the rollers and raceways, and the bearing performance will be deteriorated significantly.

Therefore, it is necessary to carefully examine the rigidity of housing and the strength of fixing bolts when a large moment will be applied.

1. Before installation, please clean bearing bracket, shaft, or other components, make sure there is no burrs or rough edge.
2. Fix the inner and outer rings in the axial direction by using fixing plates, etc.
3. Slightly loosen the fixing bolts of bearings outer ring during mounting.