Automobile parts and assemblies that use F&D bearings include: engine, generator, water pump, clutch, transmission, differential, steering gear, air conditioner, etc. The main bearing type is small deep groove ball bearing, accounting for about 27% of the total automobile bearing consumption. Its function in the engine is center positioning. Bear the pressure and gravity, make the axis parallel, wheelbase positioning, reduce friction, so that the engine at different speeds, different loads, different temperature under the condition of safe, normal and durable operation.