The main function of a hub bearing is to support the load and provide precise guidance for the rotation of the hub. It bears both axial and radial loads and is a very important component. Traditional automotive wheel bearings are composed of two sets of tapered roller bearings or ball bearings. The installation, oiling, sealing and clearance adjustment of the bearings are carried out on the automobile production line. This structure makes it difficult to assemble in a car production plant, with high cost and poor reliability, and when the car is maintained at a repair point, the bearing needs to be cleaned, oiled and adjusted. The hub bearing unit is developed on the basis of standard angular contact ball bearings and tapered roller bearings. It integrates two sets of bearings, has good assembly performance, can eliminate clearance adjustment, light weight, compact structure and load capacity. Large, sealed bearings can be pre-installed with grease, omitting the external hub seal, and maintenance-free, etc., have been widely used in cars, there is a trend to gradually expand the application in truck

Truck hub bearings provide an advanced replacement solution, it compose of two high precision bearings which provide high quality
grease before delivery and the precise axial clearance, compact design can ensure good performance of the bearing even under most
stringent conditions and high loads. the use of such bearings ensure that the heavy duty truck can be replace the wheel huquickly and easily.

Angular contact roller bearing IJ211001 is a type of roller bearing with tapered rolling elements. Designed for simultaneous perception of multidirectional loads, axial and radial on both sides. Their compensation is due to the realized contact angles, the value of which is different for each track. The advantage of the IJ211001 angular contact roller bearing is the elimination of roller slippage, relative to the raceways of the outer and inner cages, during the rotation of the shaft. Single and twin installation is allowed. Scope of application Angular contact roller bearing IJ211001 includes differentials and gearboxes, various wheel hubs, gearboxes designed for power take-off, machine tools for various purposes, equipment for general and special mechanical engineering.