Alternator bearings are critical components in automotive charging systems, supporting the high-speed rotation of the alternator rotor. They ensure stable power generation and smooth operation under continuous engine conditions.
As a professional automotive bearing manufacturer, VBA Bearing supplies high-quality alternator bearings for passenger cars, trucks, buses, and commercial vehicles worldwide. Our products are engineered for durability, low noise, and reliable performance.
What is an Alternator Bearing?
An alternator bearing is used in automotive alternators to support the rotating shaft and reduce friction during operation. It enables efficient energy conversion and ensures stable electrical output for the vehicle.
Popular Models:
B17-99D（17×52×17 mm） – Very popular for Bosch & Valeo
B17-102D（17×47×14 mm）
6203 / 6203-2RS/C3（17×40×12 mm）
6303 / 6303-2RS/C3（17×47×14 mm）
6003（17×35×10 mm）
B15-45D, B17-92D, B17-127D and more
Common Applications:
Used in the drive end (pulley side) and slip ring end of alternators in:
Toyota, Honda, Ford, Volkswagen, Nissan, Hyundai, Mercedes-Benz, BMW, Audi and many other vehicles.
We offer both standard deep groove bearings and special automotive alternator bearings to meet different customer needs.
Need help selecting the correct alternator bearing? Please provide your alternator model, OEM part number, or bearing dimensions (ID × OD × Width), and we will recommend the best match for you.
