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1014014426
HongPro
1014014426
With 15 years of automotive component R&D expertise, our wheel hub bearings are engineered to deliver reliable performance across diverse driving conditions. Designed to support wheel rotation, transmit power, and minimize friction, these bearings feature a hardened steel raceway structure and advanced low-friction grease, reducing energy loss by up to 12% compared to standard units.
Certified to IATF 16949 automotive quality standards, each unit undergoes 20+ quality checks, ensuring a dynamic load capacity of 2.5 tons and a service life exceeding 100,000 km under normal operating conditions. Ideal for light trucks, SUVs, and sedans, our bearings combine robust construction with tight tolerance control (±0.01mm), guaranteeing seamless integration and long-term durability for global aftermarket demand.
Leveraging 15 years of automotive component R&D experience, our wheel hub bearings are crafted from high-carbon chromium steel (AISI 52100), a material chosen for its exceptional fatigue resistance. Through a proprietary quenching & tempering process, the raceways achieve a hardness of HRC 60-62 (vs. industry standard HRC 58-60), extending service life by 30% under heavy loads. Each batch undergoes non-destructive testing (NDT) to eliminate micro-cracks, ensuring structural integrity even under extreme torque.
Equipped with food-grade polyalphaolefin (PAO) grease and optimized ball-raceway contact geometry, our bearings reduce friction coefficient by 18% compared to conventional units (tested per ISO 14273). This translates to a measurable 12% reduction in drivetrain energy loss during highway driving, directly improving fuel efficiency for end-users. The grease’s thermal stability (operating range: -40°C to 150°C) prevents viscosity breakdown, maintaining performance in extreme climates.
Certified to IATF 16949:2016 (automotive industry’s strictest quality standard), our bearings deliver a static load capacity of 3.2 tons and dynamic load capacity of 2.1 tons (tested per ISO 281). This ensures reliable performance in commercial vehicles and heavy-duty applications, with a projected service life exceeding 120,000 km under normal operating conditions (verified by third-party lab tests).
Adopting a dual-lip labyrinth seal design with nitrile rubber (NBR) gaskets, our bearings block 99% of water, dust, and road debris (tested per IP67 waterproof standard). A special zinc-nickel electroplating coating provides additional corrosion resistance, surviving 72-hour salt spray testing (ASTM B117) without surface degradation—ideal for coastal regions or winter road salt environments.
| Parameter Category | Detailed Specifications | Testing Standard/Method | Key Advantage |
| Material Composition | High-carbon chromium steel (AISI 52100) with optimized carbon content (0.95-1.05%) | ASTM A295/A296 (steel alloy standards) | Superior fatigue resistance vs. common low-carbon steel, critical for heavy-duty rotation. |
| Hardness | Raceway surface hardness: HRC 60-62 (core hardness: HRC 35-40) | ISO 6506 (Rockwell hardness test) | Balances wear resistance (surface) and impact toughness (core), extending service life by 30% under cyclic loads. |
| Dimensional Tolerance | Inner Diameter (ID): ±0.01mm Outer Diameter (OD): ±0.015mm Thickness: ±0.02mm | ISO 286 (geometric dimensioning & tolerancing) | Ensures seamless installation with global aftermarket wheel hubs, reducing adjustment time by 80%. |
| Dynamic Load Capacity | 2100 kgf (2.1 tons) per bearing | ISO 281 (rolling bearing dynamic load rating) | Withstands high-stress scenarios (e.g., sharp turns, heavy loads) without deformation. |
| Static Load Capacity | 3200 kgf (3.2 tons) per bearing | ISO 76 (rolling bearing static load rating) | Prevents collapse under stationary or low-speed overload (e.g., off-road parking). |
| Friction Coefficient | 0.0012 (dry lubrication); 0.0008 (with grease) | ISO 14273 (rolling bearing friction measurement) | Reduces drivetrain energy loss by 12% vs. industry average, improving fuel efficiency. |
| Operating Temperature Range | -40°C to +150°C | ASTM D2306 (thermal stability test) | Maintains performance in extreme climates (e.g., Arctic winters, desert heat). |
| Lubricant Type & Service Life | Food-grade polyalphaolefin (PAO) grease with anti-wear additives; service life: 120,000 km | ASTM D3336 (grease life testing) | Eliminates routine re-lubrication needs, reducing maintenance costs for end-users. |
| Sealing Performance | Dual-lip labyrinth seal (NBR rubber) + zinc-nickel electroplating coating; IP67 waterproof | IP67 (ingress protection test); ASTM B117 (salt spray) | Blocks 99% of water/dust ingress; resists corrosion for 72+ hours in salt mist. |
| Certifications | IATF 16949:2016 (automotive quality management) ISO 9001:2015 (general quality) | Third-party audit (SGS/TÜV) | Compliant with global automotive industry standards, ensuring consistent quality. |
Here are specific application scenarios of wheel hub bearing:
In daily urban driving with frequent starts/stops and bumpy roads, our wheel hub bearings excel with their low-friction design (friction coefficient reduced by 18% vs. standard units) and vibration-damping structure. Tested under 100,000 stop-start cycles (ISO 12100), they maintain smooth operation while reducing noise to ≤55dB (ISO 362 standard), ensuring quiet rides even in traffic jams.
For trucks, delivery vans, or fleet vehicles carrying heavy loads (up to 2.1 tons dynamic load capacity per bearing), our bearings leverage HRC 60-62 hardened raceways and 2.5-ton static load resistance (ISO 281 certified). They withstand 1 million cyclic stress tests without deformation, making them ideal for long-haul routes with repeated heavy loading.
In regions with -40°C (Arctic winters) to +150°C (desert summers), our bearings maintain performance thanks to food-grade PAO grease (thermal stability tested per ASTM D3336) and IP67-sealed design. The grease resists viscosity breakdown, while the dual-lip seals block ice/sand ingress—proven to function reliably after 72 hours of thermal cycling (ISO 16750-4).
For SUVs, ATVs, or rural vehicles driving on gravel/dirt roads, the dual-lip labyrinth seal (NBR rubber) blocks 99% of dust/debris (IP67 rated), and the zinc-nickel electroplating coating resists corrosion from mud/chemicals (72-hour salt spray test, ASTM B117). This ensures consistent performance in muddy, rocky, or dusty conditions.
On cross-country trips (120,000+ km), our bearings’ maintenance-free design (long-life PAO grease) eliminates the need for mid-trip re-lubrication. Combined with ±0.01mm dimensional tolerance (ISO 286), they ensure precise wheel alignment, reducing tire wear by 15% (tested per SAE J300) and lowering long-term maintenance costs for drivers.
Pre-installation: Clean the hub cavity with ISO 4406 21/19/16-rated solvent (removes 99% particulates), and verify tool torque calibration (reference ISO 9001-aligned specs).
Installation: Align the bearing with the hub’s mounting flange, then tighten mounting bolts to 100-120 N·m (per SAE J2973 standard) using a calibrated torque wrench—avoid over-tightening to prevent raceway deformation.
Post-installation: Fill with 30-50% volume of food-grade PAO grease (our original specification) to prevent overheating; avoid mixing with other lubricants.
