Rotary Hammer is a power tool for drilling,augering,wall chasing,making holes.As a working element,the rotary hammers uses a bore bit,a peak,a chisel or drill.The rotary hammer has three modes of operation,drilling,hammer drilling and hammering.The required mode can be selected using a switch.
Depending on the type of housing,there are "straight" and "barrel" rotary hammer.In the "straight" housing,the engine is located horizontally,so the tool has a thin elongated shape.It is convenient for operating in narrow space.In "barrel" rotary hammer,the rotary engine is vertical,so it heats up slower and ,thereby, increase the duration of operation.