Material: SPCC SD Production: CNC Spinning machine Weight Estimate: 1.25Kg Our rotor is currently made by forging S12C. We are trying to switch to SPCC SD using CNC spinning machine. So if your factory has the capability and capacity to develop such rotor part, please kindly contact me, and I will send you the detailed drawing. The monthly demand for all our rotor is about 50,000 PCS.