Car wheel bearings needs oiling maintenance regularly live?

The current car wheel bearing is free maintenance, normal car use to scrap all need not tube. Early wheel bearing is a bearing alone loaded on axle, but this kind of bearing when the device is prone to error cause shaft capacity not average, use a shorter life, benefit is bad just need change the bearing, low price to buy. Remember relatives dipper rear wheel bearing is broken, with a broken bearing directly to bearing according the dealership and bought a new outfit. The usual wheel bearing and shaft head into an organic whole, in the consumer online direct screw mount line, minimal error, bearing force average operation, long service life. Smooth and bearing internal blockade have fat, at any time to provide smooth. The above is a one-piece wheel bearing, large steel ball, plump smooth fat, brightness of the friction surface, no sliding friction inside the wheel turns to him, are all steel ball rotation of rolling friction, the friction is small, wear is also very small. Combined with good sealing, the bearing life is very long, don't need maintenance.