we have CE certificate for this machine. please check it. M02-9 CNC spring end grinding machine is the newly developed double feed tray grinding spring machine based on the advanced CNC end grinding technology at home and abroad. By the utilization of air cylinder ,this device could realize the circulating exchange of feed trays ,in the same time for process of grinding ,loading or unloading the parts ,as well as just feeding for grinding . It adopts servo motor to control the grinding wheel and has the functions of automatic inspection, compensation and alarming. The feed speed and quantity of the grinding wheel, grinding pressure, rotating speed of the feeding plate all can be programmed on the computer screen. This machine is convenient to operate and has a high efficiency and it is the ideal equipment for double-end grinding of large quantity spring. Model M02-9B 1) Steel wire diameter of grinding spring (mm): Φ1- Φ9 2) Diameter of grinding spring (mm): ≤100 3) Height of grinding spring (mm): 20-250 4) Grinding wheel size (outside x inside x height) (mm): Φ450 x 60 5) Grinding head speed: 1,430n/min 6) Machine size (length x width x height): 2300x2000x2550mm 7) Net weight of the machine: 3000kg 8) Power : three phase 380V AC 50 HZ 9)motor power (motor 4 pcs ): 16.78KW