At present, automobiles are developing in the direction of lightweight, high efficiency, and economy. Thanks to advances in electronic control technology, cars have also achieved low energy consumption.
As an important part of vehicle support, rolling bearings must adapt to this development trend.
New energy vehicles are an emerging industry in recent years. It leads the market with the demand for lightweight and zero-emission and gradually enters our life.
New energy vehicles are composed of three major parts: battery, motor, and electronic control.
The power comes from the drive motor, which is the main direction of the subsequent development of the automobile industry. Main application parts: drive motor, hub motor, reducer.
Automotive bearings involve deep groove ball bearings, tapered roller bearings, cylindrical roller bearings, needle roller bearings, etc.
Automobile bearings have special structures and functions. Mainly used in automotive power systems, transmission systems, steering systems, chassis systems, and auxiliary systems.
The transmission system includes gearbox, transmission shaft, differential and other parts. These parts mainly involve deep groove ball bearings, needle roller bearings, short cylindrical roller bearings, tapered roller bearings, etc.
Automobile bearing has the characteristics of pollution resistance, low noise, small starting torque and long life. It can bear radial load and axial load at the same time.
The main structure of the steering system bearing is a specially designed groove ball bearing. Mainly used for EPS motors, compact structure, can achieve a certain self-aligning function.
Steering system bearings can with stand bidirectional axial loads. It has the characteristics of small starting torque, low noise and long life and is widely used in electric power steering systems of various vehicles.
The chassis system
The chassis system includes hub units, differentials, shock absorbers, etc.
Bearings involve the first, second, and third-generation wheel hub unit bearings, short cylindrical roller bearings and large taper angle tapered roller bearings, shock absorber bearings with special structures, etc.
Bearings have the properties of impact resistance and fatigue resistance.
Auxiliary systems include wiper motors, seat adjustment motors, door lift motors, etc. Most of the motor bearings use miniature deep groove ball bearings, which have the characteristics of low noise, low vibration and low starting torque, which greatly improves the comfort and the quality of the vehicle.
Features of bearings suitable for automobiles
- High speed:
The optimized design of special cage material and pockets is adopted so that the bearing has low resistance when rotating at high speed;
- High and low temperature:
The automotive bearings adopt a special heat treatment process and special grease. To meet the use requirements of -40 ~ 150 ℃, the bearing performance has been greatly improved.
- Noise and vibration:
Low noise, low vibration, low starting torqueullamcorper mattis, pulvinar dapibus leo.
Material selection makes the bearing extremely fatigue-resistant. The “tri-convex” design of tapered roller bearings and cylindrical roller bearings improves stress distribution under heavy loads.
Through the improvement of the advanced bearing forging process and special heat treatment process, the impact resistance of the bearing has been improved. By improving the micro-morphology of the bearing ring, the lubricating performance of the bearing has been improved.
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