OEM Car Parts Front Auto Wheel Hub Bearing Unit for Chinese Chery Geely Byd JAC Xiali Zhonghua M11-3301210 S11-3301030ba Hub283-5 A21-3301210 S21-3301210ba

Factors Affecting the Lifetime of Automobile Hub wheel Bearings1.1 Installation and adjustment: If the installation technology is not well mastered, the stress state of the wheel bearing will be affected, causing it to be unable to be in a normal state during operation, especially whether the adjustment of the wheel bearing clearance is proper will be related to the service life of the automobile bearing. It is manifested that the axial load and radial load of the bearing are too large under non-stationary conditions such as large turning and side tilting. If the clearance adjustment is not qualified, the wheel bearing will suffer from severe early fatigue and reduce the service life of the hub bearing.1.2 Sealing and grease: If the grease in the automobile wheel hub bearing is not clean enough, hard granular substances will gradually precipitate out during the long-term rotation of the bearing. Into the inside of the raceway of the wheel bearing, especially in harsh road conditions, this effect is particularly obvious. These foreign objects will significantly increase the friction between the ring raceway, the inner ring raceway and the bearing balls, and a large amount of heat will be generated during the high-speed rotation of the wheel hub bearing, resulting in local burning of the auto wheel bearing and have a great impact of affecting the service life of the automobile hub bearing. 1.3 The material of the wheel hub bearing itself: The quality of the bearing itself directly affects the service life of the wheel bearing. Since there may be some non-metallic oxide inclusions in the steel used to manufacture the bearing, the material does not have the nature of a metal, making it difficult to process during rolling. During the process, it is not extended together with the metal, thus producing quality defects such as gaps with the metal matrix. These defects serve as stress concentration points and become the weak link of the overall quality of the wheel hub bearing. Therefore, under long-term stress, the fatigue damage of the wheel bearing will be accelerated and the service life will be shortened.  1.4 wheel hub Bearing heat treatment quality: During the manufacturing process of the wheel bearing, heat treatment is required to improve the microstructure of the internal structure of the steel material, so as to improve the hardness and wear resistance of the bearing, thereby improving the fatigue resistance of the hub bearing. However, after heat treatment such as quenching, the bearing Quality defects such as heat treatment deformation, overheating, underheating, and quenching cracks may also occur, which will instead lead to poor hardness, wear resistance, and impact resistance of the bearing, thereby reducing the service life of the wheel hub bearing.1.5 Surface layer quality: The wear of wheel hub bearings mainly occurs on the surface layer, including the surface of the inner ring, outer ring raceway and outer surface of the rolling body. Therefore, the quality of these surface layers is directly related to the service life of the entire bearing. The quality of the surface layer includes surface Roughness, surface waviness, etc. Taking the surface layer of the bearing raceway as an example, in order for the bearing to reach the designed service life, the surface roughness Ra must be kept below 0.05mm.HDAG wheel hub bearing assy features and quality inspection:HDAG wheel hub bearing unit has the advantages of good assembly performance, clearance adjustment can be omitted, light weight, compact structure, large load capacity, grease can be filled in advance for sealed bearings, external hub seals can be omitted, and maintenance-free, Good performance,fatigue durability,precise dimensions etc.;Product description OEM car parts front auto wheel hub bearing unit for Chinese GEELY BYD CHERY JAC XIALI ZHONGHUA M11-3301210 S11-3301030BA HUB283-5 A21-3301210 S21-3301210BA S113001017 A13-3301030    Item Name         Auto/car WHEEL BEARING,WHEEL BEARING HUB, WHEEL HUB BEARING, wheel hub unit,wheel bearing kit,pilot ball bearing,cross bearing spider kit,clutch release bearing,hub bearing assemblyOEM/REF NO.              M11-3301210 S11-3301030BA HUB283-5 A21-3301210 S21-3301210BA S113001017 A13-3301030 Car ModelFor GEELY BYD CHERY JAC XIALI ZHONGHUAPOSITIONRH/LH/Right/ Left/ Front/RearMOQ50PCS/100PCS/150PCS/200PCS depend on car models and production detailsQuality/Product parametersOEM standard or Design as sample or drawingPayment TermsT/T, L/C, Credit card, CashProduct Guarantee1 Year or 50,000kmsDelivery Time1. Sample: within 7 days if with stock roughcast                                                                    2. Batch : 30-45 days since receive depositPackage1.Neutral bag+inner box+master carton                      2.Customize brand bag and box design AS REQUIRE+master carton                              Notes: all master carton with woven bag to avoid broken during transit, offer pallets servic