1. Product Material & Production Craft

1.1 Bearing Base Material

The whole wheel hub bearing unit adopts high-quality GCr15 chrome bearing steel as raw material. After integral forging, rough turning and finish turning, the hub blank gets uniform internal metal texture, effectively avoiding cracking and deformation under heavy load. The raceway surface undergoes superfinishing treatment, achieving ultra-smooth finish to reduce friction and running noise.

1.2 Heat Treatment Process

Complete overall quenching and low-temperature tempering process is applied. The bearing raceway and rolling elements reach stable high hardness, with strong wear resistance and anti-fatigue performance, suitable for long-time heavy transportation.

1.3 Double-Layer Sealing System

Dual rubber labyrinth sealing structure is equipped inside the unit. High-temperature resistant nitrile rubber sealing rings cooperate with metal dust-proof covers to form dual protection. It effectively blocks mud, rain, sand and sewage intrusion, prevents grease leakage, and avoids early bearing failure under mining, construction and coastal saline road conditions.

1.4 Pre-Grease Assembly Technology

We fill high-temperature and anti-extreme pressure lithium grease into the bearing before delivery under dust-free workshop environment. Uniform grease coverage reduces metal friction; no repeated refueling needed after installation, realizing maintenance-free use.

1.5 Precision Assembly & Dimension Calibration

All rolling steel balls, inner and outer rings are assembled with automated precision equipment. Strict dimensional inspection is carried out according to OEM standard tolerances, ensuring complete interchangeability without modification during replacement.

2. Core Performance Advantages

2.1 High Load Bearing Capacity

Integrated one-piece structure can bear large radial and axial load at the same time, matching heavy-duty trucks, dump trucks, semi-trailers and passenger buses with full-load transportation demand.

2.2 Waterproof, Dustproof & Long Service Life

Double sealing structure isolates external impurities, greatly extending service cycle compared with single-seal ordinary bearings, lowering vehicle maintenance cost.

2.3 Low Noise & Stable Operation

Superfinished smooth raceway minimizes rolling friction, the wheel runs smoothly without abnormal humming during high-speed driving.

2.4 Direct OEM Replacement

Manufactured strictly following original vehicle size standards, plug-and-play installation without extra adjustment, saving repair time for mechanics.

3. Applicable Models & Supply Info

Widely compatible with Sinotruk Howo, Shacman, FAW, Dongfeng, Volvo, MAN, Scania, Mercedes-Benz, BPW and SAF trailer axles. Factory direct wholesale, support customized production according to customer OE numbers, sufficient stock and fast shipment for global auto spare parts distributors and repair shops.

Heavy Duty Truck Wheel Hub Bearing Unit OEM Replacement