... Oval filter cage welding machine gear rack rail,server motor,high accuracy ring space precision:0.1mm pulling speed:0.4m/s Oval ... mechanism formed by gear rack and step motor, no accumulated locating tolerance, ring space precision is 0.1mm, pulling speed is 0. ... of the cage can be ensuredStroke-adjustable cylinders increase welding speed, pre-pressing only takes 0.08sControlled by micro-computing ...