Summary:QL ball coupling is a flexible coupling without elastic elements.It is composed of a semi-coupling ball with a semi-circular longitudinal groove on the cylindrical inner surface and a semi-coupling with a semi-circular longitudinal groove on the drum-shaped outer surface. The structure is very simple.

　　QL ball coupling is a flexible coupling without elastic elements.It is composed of a semi-coupling ball with a semi-circular longitudinal groove on the cylindrical inner surface and a semi-coupling with a semi-circular longitudinal groove on the drum-shaped outer surface. The structure is very simple.Transmission process: Torque is transmitted from the half coupling (active end) to the driven end of the half coupling through balls.Because the ball can move axially in the groove, the half coupling is a drum-shaped half coupling, and the ball groove between the two coupling halves has a certain gap. Therefore, the ball coupling has a small amount of axial, For radial and angular compensation, the ball coupling is simple in structure, easy to manufacture, low in cost, easy to assemble and disassemble, small in size, and large in transmission torque, but it does not have the function of damping and buffering.