NTN: Development of “Low Friction Hub Bearing II” Reducing Rotational Friction by 50%

Reduce rotational friction while driving by 50% and improve vehicle fuel efficiency by approximately 0.42%

NTN Corporation (hereafter, NTN) has developed the “Low Friction Hub Bearing II” which reduces rotational friction by 50%, and contributes to the control of greenhouse gas emissions that are becoming severe every year.

Since environmental regulations are continuing to be introduced and regulated more strictly in Japan, the Americas, Europe and emerging countries, demands of fuel efficient vehicles such as hybrid vehicles and electric vehicles (EV) keep growing accordingly. In addition emphasis is being placed on reducing energy while vehicle is driving, and there is a demand to further reduction for rotational friction in order to get better efficiency for fuel and electric consumption even for hub bearings that support axle.

NTN has developed a hub bearing that greatly reduces rotational friction compared to conventional products by adopting low viscosity grease for seal, improving the sliding surface of seal and low friction grease for bearing, and has been developing a market for the product.

By redesigning the seal structure and optimizing the shape, NTN has developed the “Low Friction Hub Bearing II” which reduces rotational friction by 50% compared to conventional products without affecting muddy water resistance and improves fuel efficiency of vehicle by approximately 0.42%. It is general to apply three contacted seal lips in order to ensure muddy water resistance, however this developed product has a reduced number of lips that make further low friction. NTN could maintain a high muddy water resistance with creating a labyrinth structure (clearance) in the seal and optimizing seal shape in order to cover expected some reduction of muddy water resistance due to reducing the number of contacted seal lips. The composition and viscosity of grease were also revised, and the grease that contributes to torque reduction is adopted.

About BHR Bearing ( Shenzhen Qinggong Bearing Co, Ltd.)

Shenzhen Qinggong Bearing Co., Ltd. （www.bhrbearing.cn）is a well-know bearing manufacturer in China since the year 1996 with its own factory. Despite our own BHR bearings, we also distribute kinds of famous branded bearings from worldwide manufacturers SKF, FAG, NSK, KOYO, NTN, NACHI, ASAHI, TOYOTA......and OEM can also be supplied.

We Shenzhen Qinggong Bearing Co., Ltd. is focused and committed to deliver our customers high quality products and solutions because they are at the core of everything we do. By combining technology with our design engineering expertise we are able to offer a breadth of advanced bearings and solutions. 

With variety of bearinAgs, competitive prices, fast delivery and good after-sale service, hope we will get a chance to talk bearings together.