Universal couplings have a variety of structural types, such as: cross shaft type, ball cage type, ball fork type, bump type, ball pin type, ball hinge type, ball hinge plunger type, three pin type, three fork rod type , Three ball pin type, hinge type, etc., the most commonly used is the cross shaft type, followed by the ball cage dragon.

    The common feature of universal couplings is that the angular compensation is large, and the angle between the two axes of universal couplings of different structure types is different, generally ≤ 5 ° -45 °.The universal coupling utilizes the characteristics of its mechanism to make the two shafts not on the same axis, and when there is an angle between the axes, it can realize the continuous rotation of the connected two shafts and reliably transmit torque and motion.The biggest feature of the universal coupling is its large angular compensation capability, compact structure and high transmission efficiency.In practical applications, it is divided into heavy, medium, light and small according to the transmitted torque.