SKF Low Weight Hub Bearing Unit a new contribution to more energy efficient vehicles

2011 May 17, 15:39 CET

The SKF Low Weight Hub Bearing Unit is a new wheel end solution of the flanged hub bearing design that contributes to a significant weight reduction and thereby reduces fuel consumption and CO2 emissions. By combining steel, which provides the expected rolling bearing performance, with aluminium, as the flanged structural component, the overall weight can be reduced by up to 30% compared to the standard unit.


For premium cars the SKF Low Weight Hub Bearing Unit is able to reduce the weight by 1 kg per axle, reducing emissions approximately with 0.1 g CO2/km.

For light commercial vehicles the SKF Low Weight Hub Bearing Unit is able to reduce the weight by 3.5 kg per axle, reducing emissions approximately with 0.3 g CO2/km.

This has been calculated by the SKF Vehicle Environmental Performance Simulator based on the New European Driving Cycle (NEDC).

This new bearing type will give increased mileage to a wide range of vehicles, including electric vehicles, while for the light commercial vehicles it will also offer a load capacity increase.

An additional benefit is improved vehicle handling due to the fact that un-sprung masses in the wheel-corner unit are reduced.

The SKF Low Weight Hub Bearing Unit is mainly for new car designs, but in limited cases retrofitting with existing hub bearing unit solutions can be done.

The new bearing unit is a result of research into the use of new materials with a design that would maintain stiffness, endurance and structural integrity, under both corrosive and varying operating temperatures. This low weight wheel end solution, despite the partial material change from steel to aluminium, has maintained the same performance and reliability levels as the standard all-steel version.

"In our efforts to develop energy efficient solutions for vehicles we can now proudly introduce the SKF Low Weight Hub Bearing Unit to our portfolio. It is yet another innovative product that contributes to reduced CO2 and fuel consumption savings, without compromising the performance requirements." Says Edward Holweg, Director Product and Systems Development, SKF Automotive Division.

Göteborg, 9 May, 2011

Aktiebolaget SKF

For further information, please contact:
PRESS: Ingalill Östman, SKF Group Communication, tel: +46 31-337 3260, mobile: +46 706-973260, e-mail:

Technical Press: Colin Roberts, SKF Group Technical Press, tel: +31 30 607 56 08, mobile: +31 65 394 41 11, e-mail:

SKF is a leading global supplier of bearings, seals, mechatronics, lubrication systems, and services which include technical support, maintenance and reliability services, engineering consulting and training. SKF is represented in more than 130 countries and has 15,000 distributor locations worldwide. Annual sales in 2010 were SEK 61,029 million and the number of employees was 44,742.

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