Compensate the axial, radial and angular deviations between the active machine and the driven machine due to manufacturing errors, installation errors, load-bearing deformations, and the effects of temperature rise changes. U-type diaphragm couplings are mainly single and double sections.There are aluminum alloy at both ends, and the middle is connected by a stainless steel diaphragm.The main and slave motives transmit torque, which has the advantages of elastic vibration reduction, no noise, and no need for lubrication.The instantaneous torque reaches 350% of the rated torque. When applied to a servo motor, it is expected to achieve compactness and cost reduction.