A brushless angle grinder uses a brushless DC (BLDC) motor, which uses an electronic controller instead of carbon brushes for commutation. Traditional brushed motors rely on physical carbon brushes to contact the commutator, which can cause sparking and wear. Brushless motors, on the other hand, use Hall sensors to detect rotor position, and circuitry precisely controls the direction of current flow, completely eliminating the limitations of carbon brushes. For example, the DeWalt DWE43231Q brushless angle grinder can reach speeds of 10,000 RPM and improve efficiency by over 30% (data source: DeWalt 2023 Technical White Paper).
