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SKF develops a new low noise bearing for steering columns

25 April 2015

SKF has developed a new customised bearing for steering columns that produces significantly reduced noise levels.

The pre-loaded wire steering column bearing (P-WSCB) is aimed at Tier One automotive manufacturers. It reduces noise levels by around 4dB(A) compared with standard SKF bearings.

Gaps in the wire raceway give flexibility to the bearing’s outer ring, which allows for press fit mounting into the housing. Careful design of the gap helps to reduce bearing noise. Other important design features that reduce noise include: reduced roughness of the inner ring; a change of ball quality grade; and optimisation of grease quantity.

The bearing offers a better driving feel, in terms of friction torque and steering column stiffness, and helps to mitigate vibrations from the road to the driver. It supports axial and radial loads well, and provides electrical conductivity, which helps towards the smooth functioning of airbags and other electrical components.

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