叠加推力轴承

Multi-row radial thrust ball bearing is a kind of special bearing used in driving joint of downhole power drilling tool. It is different from the standard centripetal thrust bearing. It usually adopts multi-row series structure and is made of special materials. It has the characteristics of large bearing capacity, impact resistance, simple structure, easy disassembly and assembly, and can bear bidirectional axial load. It is suitable for the occasion of low speed, heavy load and violent vibration, and its working characteristics are difficult to be achieved by general bearings.