Cross torsion spring (also known as the measuring arm cross spring) is a key piece of CNC roll grinders, intelligent robots and other equipment measurement system, which is mainly the deflection angle of the load and the average life expectancy of three elements provide the required elasticity reset for the measurement system With the increase of the number of measurements, 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.