Automotive wheel bearings must be high reliability and long life because of its special conditions of use
Large load rating and large moment stiffness : The bearings are double row angular contact ball bearing .Which are designed to have a large contact angle and radial, axial clearance has adjusted well . So it is fully resistant to moments imposed on the wheel during cornering or bumping.
High compactness and superior sealing : No need for parts such as spacers ,thus minimizing axial space requirement. So high rigid and short axles can be used . An appropriate amount of high-grade grease is prepackaged in the bearings. Sealed type bearings are mud-proof ,water-proof and leak-proof all without the use of shaft seals.