Automatic power-off electric wrench when it reaches a certain torque to control the (with what instrument switch or the like)
Sensor type torque wrench with torque sensor, high accuracy, intuitive, but high prices.
The current type constant torque electric wrench controls the output torque of the wrench by controlling the electric current of the motor, the price is moderate, the efficiency is slightly bad, and the fixed torque accuracy is medium.
Impact fixed torque electric wrench depends on time or impact times, fixed torque, low price, high efficiency, fixed torque accuracy is slightly worse.
The fixed torque electric wrench on the market can be divided into three kinds: impact type constant torque electric wrench, current type constant torque electric wrench and sensor type fixed torque electric wrench.
