Traditional angle grinders are also called brushed angle grinders. However, because carbon brushes are very troublesome to replace, brushless angle grinders were introduced. The differences between brushed and brushless angle grinders are as follows: Torque: The brushless motor itself has magnetic force, which is stronger when powered, resulting in higher torque in brushless angle grinders than brushed ones. Efficiency: At similar no-load speeds, brushless angle grinders experience less speed drop than brushed ones, resulting in higher efficiency. Consumables savings: Brushless angle grinders do not require carbon brushes, eliminating the energy consumption and frictional resistance caused by the friction between the carbon brush and the copper head, saving consumables and reducing production costs.
