Timberman electric wrench always burn brush spring is going on
This current is large, the spring is easy to heat out, that is, you burn. There is a built-in type, with built-in spring or a torsion spring, this is not easy to heat failure, long service life. Built in, you can refer to the Jiangsu arts tools 2101-2, is the most classic one on the market.
You say burn the spring, it is certainly possible to change the carbon brush, you can change the carbon brush is divided into two kinds, and one is external type, with the conventional spring
