JTEKT has successfully developed a hub bearing unit with low torque and high sealing performance even in cold regions. We will put the new products developed this time on the global market including extremely cold regions, and contribute to the realization of a low-carbon society.

1. Development background

In recent years, in order to achieve carbon neutrality, the manufacturing environment led by the automobile industry has more than ever needed to reduce energy losses. The low-torque of the wheel hub bearing unit that supports automobile wheels has also become an indispensable technology directly related to fuel consumption.

On the other hand, the nitrile rubber used for sealing part accounts for about half of the torque generated by hub bearing unit. It is used as sealing material in hub bearing unit and various fields, but its low friction property is contrary to the physical properties of rubber ( such as strength, heat resistance, wear resistance, etc. ). Therefore, how to realize the two properties at the same time has become a topic.

Generally speaking, nitrile rubber has certain advantages in oil resistance, abrasion resistance, and tear strength, but its cold resistance is inferior to other rubber materials.

With the development of marketization, if the hub bearing unit produced by JTEKT will be used in a harsher environment than the current one, then expanding the use temperature range of the sealing rubber has become an important issue.

2. Features and advantages of the new product

1. Low torque

The technology developed this time to apply rubber to the sealing material has achieved a 10% reduction in sealing torque.

2. High tightness

Because rubber does not lose its elasticity in extreme cold environments below -40°C and can maintain the integrity of the seal, it can prevent muddy water from entering the hub bearing unit even in extreme cold areas such as North America and Russia.

The rubber material developed this time can be used not only in wheel hub units, but also in various industries including other auto parts. JTEKT will continue to contribute to the realization of a low-carbon society.

More About FreeRun:

FreeRun Bearing Co.,Ltd is specialized in exporting and producing miniature bearings made of fully hardned rolling bearing steel,Ceramic and carbon.The standard Range covers bearing from 1—18mm bore and 3 to 45 mm outer diameter. In addition to this we also manufacture special bearings regarding to customers'design.

http://www.freerunbearing.com/ 

2021 New Week FreeRun product Recommendation:

Tapered roller bearings:

Tapered roller bearings have tapered inner and outer raceways and rollers to handle simultaneous radial and thrust loads. Their axial load carrying capacity is directly related to the contact angle of the rollers and raceway shaft. 

They are available in single-row, double-row, and four-row designs. The individual parts of tapered roller bearings are commonly sold separately as cups and cones. Cones contain the roller assembly and inner ring while cups include the outer ring. Full assembly units contain both the cup and cone. As separable bearings, different designs and sizes are available to accommodate a variety of applications.

http://www.freerunbearing.com/products/Tapered-Roller-Bearing/155.html

Needle Roller Bearings:

It is known that FreeRun Bearing is one of popular manufacturers and suppliers of needle roller bearings in China. FreeRun needle roller bearings include drawn cup needle roller bearings, heavy duty needle roller bearings, one way clutch bearings, needle roller and cage assembles, needle roller thrust bearings, aligning needle roller bearings, inner rings, loose needle rollers and track rollers.

http://www.freerunbearing.com/products/Needle-Roller-Bearing/182.html

Any other high quality bearings here:

http://www.freerunbearing.com/products/catalogue.html 

Contact:

http://www.freerunbearing.com/AboutUs/contact.html