Joint bearings is mainly composed of a spherical outside of the inner ring and outer ring composed of an inner sphere, according to their types and of the different structure, can bear radial load radial and axial load or axial while function of combined load. Such bearing has large load capacity and impact resistance ability, and have KangFuXing, wearability, self-aligning, lubrication good or self-lubricating prevent dirt characteristics, commonly used for low speeds swinging movement, the tilt movement and rotation movement. Nowadays, our products are widely used in metallurgy caster, rolling just equipment, mining machinery, mould, lifting machinery, textile machinery, wind power generation, ship, turbine, turbine, injection molding machines and equipment production line.