Angle Grinder KD100B

A rotary hammer is made for routine concrete drilling. Anchor bolt installation, rebar doweling, and drilling through concrete are popular applications. Larger rotary hammers can also be used for cleanup after form building and mild to medium heavy demolition work. A driving piston used in rotary hammers applies air pressure to a flying piston. Even though the bit is rotating due to the electric motor, this propels it forward swiftly. It has a "KD-28B Speed with no load: 850 r/min Rated power: 1 400 W Maximum frequency: 50 Hz Maximum impact rate:4500bpm Rated voltage:220V ". Another significant benefit is that most rotary hammers have three modes, allowing them to function as a mini-jackhammer: drill mode, hammer drill, or merely hammer. "KD-100B Disc diameter：100mm No-load speed：11000r/min Rated power：900W Rated frequency：50-60Hz Rated voltage：220V"