Electric needle scaler

An electric needle scaler, comprising:

• a tool body, at least part of which extends along a driving axis that defines a front-rear direction of the needle scaler;
• an electric motor that is housed in the tool body and includes an output shaft that is rotatable around a first rotational axis;
• a hammering mechanism that is housed in the tool body;
• and
• a scaling mechanism that is supported by a front end part of the tool body and includes needles that protrude forward to be exposed out of the tool body and are supported to be movable in respective axial directions of the needles;
• wherein the hammering mechanism includes:
• (i) a piston that is operably connected to the output shaft of the motor and reciprocates along the driving axis along with rotation of the output shaft;
• and (ii) a striker that reciprocates along the driving axis by pressure fluctuations caused in an air chamber by reciprocation of the piston and applies hammering force to the needles.