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Automobile Alternator

Automobile Alternator

Automobile Alternator

Typical product: WD precision deep groove ball bearings

Alternators are used in modern automobiles to charge the battery and to power the electrical system when the engine is running. The bearings for alternators work in the condition of high rotation speed (up to 18,000 rpm), high temperature (from -40~180 ℃), heavy load and dusty. Driven by the developing of automobile industry and the increasing quality requirement, the alternator bearings are required to be reliable and long-life.

WD Solution:

WD manufactures alternator bearings for many OEM customers. The following special designs make our bearings reliable.

1. High quality chrome steel (SKF3, PA12) for bearing material to ensure the long lifetime.

2. Enhanced bearing cage and special bearing design to adapt to the high rotation speed.

3. Special sealing structure design to prevent from dust and mud.

4. High quality grease, sealing material and special heat treatment to adapt to the high temperature condition.

5. Special design in the sealing and inner ring to lower the starting torque of the bearing, and reduce CO2 emission.