Deep groove ball bearings mainly bear radial load, also can bear radial load and axial load. When it is only subjected to radial load, the contact angle is zero

The ball bearing ball bearing has two kinds of structure, the cylindrical hole and the conical hole, the cage material has the steel plate, the synthetic resin, etc

Needle roller bearings, bearing capacity is in supporting structure of restricted installation size, shaft neck surface quenching hard as a rolling surface

Cylindrical roller and rolling line contact bearing. Load capacity, mainly bear radial. Cylindrical roller and rolling line contact, radial load capacity. Inner ring or outer ring can be separated