... life 2.heat treated 3.smooth,stable operation 4.high performance 5.low noise DDMD crane geared motor1.Reduction gearThe gear ... of cast iron(FC25) with high tension, and manufactured by computer numerical control machinery(CNC LATHE&CNC machining center),which lead ... stable and smooth, which make goods not shaking.3.MotorHigh performance,high torque,motor itself ensures quick heat dissipation, and high ...