Main types Deep groove ball bearings: Suitable for high-speed, low-load scenarios, with simple structure and low friction. Ang contact ball bearings: Can bear both radial and axial loads simultaneously, often used in high-precision applications. Crossed roller bearings: Can withstand larger radial and axial, suitable for high rigidity and high precision requirements. Wave gear bearing: Designed specifically for wave gear reducers, used for high-precision transmission.