Hub Bearings and Units
Hub bearings are essential components in a vehicle’s chassis system. They support the wheels, enable smooth rotation, and bear various dynamic loads during driving—such as radial and axial forces. Modern hub bearings are typically designed as integrated units that combine sealing, lubrication, and mounting features to improve reliability and extend service life.
Types
FLT provides three generations of hub bearing configurations:
- First-generation hub bearings: Consist of two separate tapered roller or ball bearings and require manual adjustment during installation.
- Second-generation hub bearings: Feature an outer ring with an integrated flange for easier mounting, though still requiring coordination with the wheel hub.
Third-generation hub bearing units: Integrate the bearing and wheel hub into a single unit, often including ABS sensors. These units are easy to install and are widely used in modern vehicles.
Details
FLT hub bearings are made from high-quality materials using advanced manufacturing processes. They deliver exceptional load capacity and long-lasting durability—ensuring reliable performance even under harsh conditions and complex road environments.
- Material Selection: High-carbon chromium bearing steel is used for its hardness, wear resistance, fatigue strength, and impact resistance—while balancing lightweight design requirements.
- Manufacturing Process: State-of-the-art forging, heat treatment, grinding, and assembly processes ensure precise dimensional and rotational accuracy.
Performance Optimization: Through detailed design and simulation, FLT hub bearings are engineered for high load capacity, long service life, and low friction. Integration with ABS sensors allows for real-time monitoring and intelligent performance.
Features
First-generation Hub Bearings
These bearings are typically configured as double-row angular contact ball bearings or double-row tapered roller bearings. They feature high load capacity, excellent impact resistance, effective sealing performance, low friction, and quiet operation. However, they require manual installation and adjustment.Second-generation Hub Bearings
This unit integrates a flange with the outer ring, simplifying installation. Internally, it still adopts a double-row angular contact or tapered roller structure. It offers strong load-bearing capacity, good sealing, low vibration, long service life, and ease of assembly.Third-generation Hub Bearing Units
The third-generation unit integrates the wheel hub and often includes an ABS sensor. Internally, it features a double-row angular contact or tapered roller design, capable of handling radial and axial loads with low friction. The sealing ring is made of low-resistance, aging-resistant elastomer bonded to a metal frame—providing a durable, high-performance seal. With an optimized leak-proof structure, these bearings are maintenance-free over long distances.
Applications
FLT hub bearings and units are widely used in:
- Passenger Vehicles: Suitable for front-, rear-, and all-wheel drive systems
- Commercial Vehicles: Applied in heavy-duty vehicle wheel-end systems, such as trucks and buses
- New Energy Vehicles (EVs): Designed to meet the requirements for high torque and low noise
- Industrial Machinery: Ideal for low-speed, high-load environments such as construction and agricultural vehicles
Used for:
Automotive
FLT drives the future of mobility by delivering high-performance bearing solutions for both electric and traditional vehicles…
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