Buy electric wrenches. Do you have carbon brushes and carbon brushes?
In theory, brushless is good, brushless motor life is longer, do not change the carbon brush. Switching life is also relatively long, so that you can save a lot of maintenance money.
But at present, brushless technology is not mature enough, we must buy good, poor brush, as well as the stability of brush. The wrench good, Jiangsu Dayi 2106-2 is relatively stable, they are mainly for the domestic market this timberman machine design, maintenance more convenient, can save a lot of money. There is also a brushless motor efficiency is relatively high, the same power, can save power.
