First, look at the accuracy
Once the electric wrench starts to work, it can not be stopped at will, and the high-precision torque wrench will be accurately twisted to the set torque when working, which is suitable for flange bolts with high tightening accuracy, and the accuracy of the general torque wrench is plus or minus 3%.
Second, look at the torque
Generally, the upper torque limit of the electric torque wrench can reach about 10,000 Nm, the greater the torque, the lower the accuracy, you can choose the right electric wrench according to the bolt standard and process requirements.
3. Look at the rotational speed
The speed determines the work efficiency, and the fast speed wrench can save the operator's working time, but the torque accuracy of the fast speed is usually low
Fourth, look at the motor
There are two types of electric motors: brushed and brushless. The brushless electric wrench starts quickly, brakes in time, and regulates the speed smoothly, and the brushless electric wrench has a long service life, anti-interference, and low noise
