... Main specifications1. Maximum input power: 45KW2. Input voltage: three-phase380V,50or60HZ3. Oscillation frequency: 30-80KHZ4. Cooling water ... motorcycle accessories high-frequency hardening heat treatment. For example: crank shaft, ram, piston pin, camshaft, vavle. transmission within ... , spline shaft, gear axle, drive axle, small crank shaft pins, rocker, and other accessories high frequency hardening ...