Lithium brushless electric wrench on digital control circuits of electric wrench in phase and slow down, speed regulation. Lithium brushless electric wrench no longer use mechanical carbon brush commutation device, solves the live brush electric wrench insurmountable problems. In theory of brushless electric wrench can reach in life, there is a brush electric wrench to reach data. 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. A brush motor faults: ()Friction, big dissipation with friends to play before the old die brush motor when they encounter this problem, that is to use the motor after a period of time, need to open the motor to clean up the carbon brush, time-consuming, laborious maintenance strength as a household cleaning. ()Fever, shorter due to have a brush motor structure, brush and commutator of the contact resistance is very big, a motor as a whole is bigger, resistance to heat, and permanent magnet is a thermal sensor, if temperature is too high, will be demagnetization magnetic steel, the motor performance degradation, affect the service life of a brush motor. ()Low efficiency, small output power above said to have a brush motor heating problems, largely because the current work on the internal resistance of the motor, so electricity have much transformed to heat energy, so there are motor output power is not big, the efficiency is not high also. (]Advantages: (lithium brushless motor)Brushless, low interference. In addition to the brushless motor brush, the most immediate change is without the motor running when the electric spark, thus greatly reduce the electric spark interference of remote radio equipment. ()Low noise, smooth operation brushless motor without brush, less friction force during operation, smooth running, low noise will many of the advantages of model running stability is a huge support. ()Long life, low maintenance costs less brush, brushless motor wear is mainly on the bearing, from the mechanical point of view, brushless motor is almost a maintenance-free motor, when necessary, the only need to do some cleaning maintenance. A brush motor torque at low speed performance, large torque and other performance characteristics is irreplaceable brushless motor, but in the context of use and ease of brushless motor, with the decline in the cost of brushless controller and brushless technology development and market competition both at home and abroad, brushless power system is the development and popularity of high-speed stage, it also greatly promote the development of the model of motion.
