The torque value of the product has achieved stepless setting, and compared with the graded setting of similar imported products, the precision of the output torque value has been greatly improved. The torque calibration output accuracy can reach ±6%, and the repeatability accuracy can reach ±3%. The wrench reaction arm and the gear box body are made of high-strength alloy steel and aluminum-titanium alloy materials, and the weight of the wrench is greatly reduced. The self-developed wrench motor meets the requirements of light weight, high power and small size. Due to the use of a single-chip computer to control the numerical control constant torque electric wrench, the torque tester can be easily calibrated by itself in the field. Product comparison The hydraulic wrench is small in size and light in weight, and the unlocking speed is increased by more than 4 times.…