Development of Hub Unit Bearings Utilizing a New Type of Grease
NSK has announced development of a hub unit that uses a new type of grease that helps in preventing any significant decline in the service life of the bearings, even when it is exposed to water. A hub unit in automobile is a part that integrates the bearing with the hub on which automobile wheels are mounted. The new grease is water resistance grease that protects the bearing raceway and rolling elements by neutralizing the effects of any water that finds its way in.
The water that come in contact with the new grease simply forms into a large bead and it is enveloped in a way that prevents it from direct contact with the surface of rolling elements or raceway. In addition to this the new grease contains an additive which is designed to form a protective film on metallic surfaces, which also preventing water to come into direct contact with the rolling elements or raceway surface. NSK is targeting an annual sales of 2 billion JPY by 2014.