The device uses the principle of induction heating of the workpiece is heated for traction motor bearings or seals the inner sleeve removable medium frequency induction heating, heating installation and auxiliary heating demolition demolition electric locomotives, subway, light rail vehicles pinion, bearing cap equipment; wheel axle box bearing sleeve heating disassembly, heating flange disassembly, heating disassembly tight fit various other components. Features: 1. adaptable, easy to use. Within the same range of workplaces, with just one power station and several common IF frequency induction heaters, can meet the different parts of the induction heating requirements. 2. heating speed, a few minutes to complete a set (or removed). 3. uniform heating without local overheating or surface phenomenon. 4. The device has automatic time and temperature control, user-set time and temperature setting. 5. The automatic demagnetization, the use of the LC resonant circuit, the residual remanence in the workpiece can be rapidly decay to zero. 6. Operation safety, environmental protection, no flames and high temperature (maximum temperature zone of the workpiece <300 ℃) 7. air-cooled structure, not the other then water systems, small footprint, easy to install and move. Main technical indicator: Input voltage: Three-phase 380V, 50Hz DC voltage: 500V Rated power: 30KW, 40KW, 60KW, 80KW, 100KW Operating frequency: 500-4000Hz