Product Introduction
A21-3301210 High-durability Low-friction Precision-engineered Wheel Hub Bearing for Chery
Our high - quality Wheel Hub Bearing for Chery is a crucial auto part. With over 16 years of manufacturing experience, we ensure top - notch products. It mainly functions to support the vehicle's weight, enduring both axial and radial loads during driving. The precision - engineered design enables smooth wheel rotation, reducing friction for better fuel efficiency.
Constructed from premium steel, it has excellent durability. For instance, some models have a specific flange diameter (e.g., 139mm in certain types) and weight (e.g., 4.26 kgs per unit). It also features a reliable sealing system to prevent dust and moisture, thus extending its service life.
Product Advantage
1.18 Years of Professional Manufacturing Experience, Guaranteed Quality:
As a supplier with 18 years of experience in the auto parts industry, we have provided Chery Wheel Hub Bearings to customers in more than 30 countries worldwide, with an annual production capacity of 1.2 million units. Each batch of products has passed the ISO/TS 16949 automotive quality system certification and undergoes 200 hours of simulated working condition testing before leaving the factory. The qualification rate remains stable above 99.8%, effectively reducing after-sales risks for customers. We are a trustworthy partner for Chery Wheel Hub Bearings.
2.Double-Row Angular Contact Design, Superior Load-Bearing Performance:
Chery Wheel Hub Bearing adopts a double-row angular contact structure. Compared with traditional single-row bearings, its axial load-bearing capacity is increased by 40% and radial load-bearing capacity by 35%, which can easily withstand load impacts under complex road conditions. Combined with high-precision grinding technology, the radial runout of the bearing is controlled within 0.005mm, ensuring smooth wheel rotation and reducing abnormal tire wear.
3.Three-Layer Sealing Technology, Extended Service Life:
The product is equipped with an innovative three-layer sealing system. The inner nitrile rubber ring prevents grease leakage, the middle metal dust cover blocks large particles of impurities, and the outer fluororubber ring resists rainwater erosion. Tests show that the sealing performance remains stable in extreme temperatures ranging from -40℃ to 120℃, and the service life can reach more than 80,000 kilometers, far exceeding the industry average standard of 60,000 kilometers, reducing replacement frequency and costs for customers.
4.High-Quality Bearing Steel Material, Strong Fatigue Resistance:
Chery Wheel Hub Bearing is made of SUJ2 high-purity bearing steel. After 1200℃ high-temperature quenching and low-temperature tempering, its hardness reaches HRC 60-62, and fatigue resistance is increased by 25%. After 1 million cycles of impact testing, there are no cracks, deformations or other problems in the parts, which can adapt to long-term high-frequency driving needs and provide a solid guarantee for the safe driving of vehicles.
Technical Parameters
| Parameter Category | Parameter Name | Specific Specification | Description |
| Basic Dimensions | Bore Diameter | 35mm - 65mm | Covers the mainstream adaptation specifications of Chery models, with a tolerance grade of P5 (precision grade) to ensure precise fit with the journal
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| Outer Diameter | 80mm - 130mm | Adopts high-precision centerless grinding, with a roundness error ≤ 0.003mm to ensure installation stability |
| Width | 30mm - 55mm | Optimized design based on the bearing load requirements; different specifications correspond to different load levels |
| Material Performance | Outer Ring/Inner Ring Material | SUJ2 High-Purity Bearing Steel | Treated with 1200℃ high-temperature quenching + low-temperature tempering, with a hardness of HRC 60-62 and fatigue strength ≥ 1800MPa |
| Rolling Element Material | SUJ2 Bearing Steel | Surface roughness Ra ≤ 0.02μm, reducing rotational friction loss |
| Cage Material | Reinforced Nylon 66 (PA66+GF25) | High-temperature resistance up to 150℃, impact strength ≥ 8kJ/m², effectively preventing deformation during high-speed operation |
| Sealing System | Sealing Structure | Three-Layer Sealing (Nitrile Rubber + Metal Skeleton + Fluororubber) | Waterproof grade up to IP69K, dustproof grade up to IP6X, and stable sealing performance in the temperature range of -40℃ to 120℃ |
| Grease Type | High-Temperature Lithium-Based Grease | Dropping point temperature ≥ 200℃, service life ≥ 80,000 kilometers, no need for intermediate grease replenishment |
| Load-Bearing Capacity | Dynamic Radial Load (C) | 25kN - 60kN | Tested in accordance with ISO 281 standard, meeting the load requirements of long-term vehicle operation |
| Static Radial Load (C0) | 18kN - 45kN | Adapts to the static support requirements of vehicles with different weight classes |
| Performance Parameters | Limiting Speed | 6000r/min (grease lubrication) | Under rated load, continuous operation temperature ≤ 80℃, no abnormal noise (noise value ≤ 55dB) |
| Service Life (L10) | ≥ 80,000 kilometers | Calculated based on ISO 281 standard, representing the reliable service life under standard working conditions (vehicle speed 60km/h, load 70% of rated value) |
| Certification Standard | Executive Standard | ISO/TS 16949, GB/T 307.1 | The whole process complies with the automotive industry quality management system; each batch of products passes 200-hour simulated working condition tests (comprehensive tests of temperature, vibration, and load) |
Product Uses
Here are specific application scenarios of wheel hub bearing:
1.Urban Daily Commuting Scenario:
Suitable for the needs of frequent starts/stops and low-speed driving on urban roads. Its double-row angular contact design can reduce radial vibration by 35%. Tests show that under the commuting intensity of 50km per day on average, the bearing wear rate is 20% lower than that of ordinary products, ensuring long-term stable operation of vehicles and reducing the frequency of daily maintenance.
2.Complex Road Condition Driving Scenario:
For complex road conditions such as rural dirt roads and mountain slopes, the product's three-layer sealing system can resist more than 98% of sand and mud intrusion. Combined with the impact resistance of SUJ2 steel material, the bearing failure rate can be controlled within 0.5% when driving on bumpy roads, meeting the needs of multi-road condition use.
3.Extreme Climate Environment Scenario:
It can adapt to extreme climates from -40℃ (severe cold) to 120℃ (high temperature). In the icy and snowy roads of northern winter and high-temperature environments of southern summer, the sealing performance and load-bearing capacity remain stable. According to third-party testing, the service life of the bearing can still reach more than 80,000 kilometers in high and low temperature environments.
4.High-Frequency Operation Scenario:
Suitable for high-frequency operation vehicles such as taxis and logistics distribution vehicles. Its high-temperature resistant grease can support continuous operation for 12 hours. Under the high-intensity use of 300km per day on average, the bearing maintenance cycle is extended to 1.5 years, which is 50% higher than the industry average, reducing operating costs.
Product Operate Guide
1.Before Installation:
Clean the journal and bearing housing to ensure no impurities (impurities easily increase the bearing wear rate by 30%); inspect the bearing appearance. If the sealing ring is damaged, replace it immediately to avoid oil leakage later.
2.During Installation:
Tighten the bolts with a torque of 50-80N·m (adjust according to specifications). Do not over-tighten or under-tighten, as this will affect the load-bearing performance; after installation, manually rotate the wheel hub to ensure there is no jamming.
3.During Use:
Check the sealing condition every 10,000 kilometers and test the bearing clearance (should be ≤ 0.05mm) every 30,000 kilometers. If abnormalities are found, perform maintenance in a timely manner, which can extend the service life by 30%.
