Wheel bearings developed by us are comprised of two or moresets of angular contact ball bearings or tapered roller bearings,featuring good assembly performance, adjustment - free builtin clearance, light weight, compact structure, large carryingcapacity, etc, and the interior is filedl withigh- performancegrease, integrated high-performance seals saving exteriorseals, thus maintenance free. The products are widelyused in cars and take on a trend of increasing usein trucks.