Brushless electric wrench with brush brushless electric wrench the difference between electric wrench on digital control circuits of electric wrench in phase and slow down, speed regulation. Brushless electric wrench no longer use mechanical carbon brush commutation device, solves the live brush electric wrench insurmountable problems. In theory the lithium electricity brushless electric wrench life to years. Brushless electric wrench no longer USES the gear reducer, avoid the efficiency loss of gear transmission, the efficiency can reach -%, and significantly reduced the noise. However, due to the use of electric bicycle brushless electric wrench requirements of low cost, small volume, light weight, has created two major technical difficult problem, is a small torque and second, there will be a low speed vibration, make some electric bicycle factory cannot actually use brushless electric wrench. With the development of modern science and technology, at present, the leading technology of electric bicycle companies about electric wrench factory has successfully solved the two problems, make the brushless motor torque has brush with pressing type, low speed vibration has controlled in the range generally do not feel. Such motor naturally become the ideal of high efficiency, high torque, low noise, target of force, brushless electric wrench will become the main electric bicycle with electric wrench in coming years.
