The Angle Grinder runs on 13-Amp power to deliver 11,500 RPM. Its Super Joint System protects gears by automatically disengaging the motor should the grinding wheel accidentally catch or bind to ensure long-lasting service. Labyrinth construction protects the motor with a set of channels to prohibit contamination from entering. In addition, the zig-zag varnish seals the motor and bearings from dust and debris by creating a barrier under rotation.