... ), 3Phase only. 2) 3 Rollers, 120x60mm 3) Variable Speed, 2-17 M/min KMJ30 Variable Speed Feeder1) 1HP (0.75KW), 3Phase only.2) 3 ... Rollers, φ120x60mm3) Variable Speed, 2-17 M/min4) Proper speed for better quality.5) simplicity of operation ,design ... dust pile up,and gears and pulleys are well machined . Variable Speed Feeder/3-roller feeder /power feeder