Cross torsion spring (also known as the measuring arm cross spring) is a key member CNC roll grinding machine of the measurement system, it has a deflection angle of the main, load, and the average life of the three elements, to provide the required spring force for resetting the measurement system, as the number of measurements increases, the torsion spring will produce fatigue deformation and failure. Imported parts due to the long procurement cycle, often become troublesome factors affecting user productivity, the company with long-term import original torsion spring, for the normal operation of the customer's equipment to enhance the security efforts. Common Model: H-20; G-20; J-20