In the auto parts industry, bearings are key mechanical basic parts, widely used in core parts such as the transmission system, steering system, engine, and wheel hub of automobiles. Its function is to reduce friction, support rotating parts, transfer loads, and ensure the stability and reliability of mechanical movement. The following is an analysis of bearings in the auto parts industry from multiple dimensions:

1. Core application scenarios of bearings in automobiles

Engine system: crankshaft bearings, camshaft bearings, tensioner bearings, etc., which withstand high temperatures, high speeds, and high loads.

Transmission system: gearbox bearings and differential bearings, which are responsible for transmitting power and bearing the impact of gear meshing.

Wheel hub unit: wheel hub bearings (third-generation integrated bearings are the mainstream), which directly bear the weight of the vehicle and the impact of the road.

Steering system: steering column bearings and steering gear bearings, to ensure steering flexibility and precision.

Motor system (new energy vehicles): drive motor bearings need to adapt to high speeds, low noise, and electromagnetic environments.

2. Main types of auto bearings

Deep groove ball bearings: highly versatile, used in low-load, high-speed scenarios (such as motors, water pumps).

Tapered roller bearings: bear combined loads (radial + axial), commonly found in gearboxes and wheels.

Angular contact ball bearings: suitable for high-precision, high-speed steering systems.

Thrust bearings: mainly used in axial load scenarios such as clutch release mechanisms.

Hub unit bearings: integrated design (with sensors, seals), directly assembled on wheels.

3. Technical requirements for auto bearings

High durability: must meet a service life of more than 100,000 kilometers (especially hub bearings).

Resistant to extreme environments: engine bearings must be resistant to high temperatures (above 150°C) and oil stains; hub bearings must be dustproof and waterproof (IP6K9K standards).

Lightweight: aluminum cages, ceramic balls and other materials are used to reduce energy consumption.

Low noise: NVH (noise, vibration, and harshness) requirements are strict, especially for new energy vehicles.

Intelligence: Integrated sensors (such as speed and temperature monitoring) to support real-time diagnosis of vehicle status.