... diameter of up-rollermmΦ220The diameter of bottom-rollersmmΦ180The distance of bottom rollersmm280Up roller lifting speedmm/minAbout 120Electric systemV/ ... of left and right bearing base, one up roller, two bottom rollers (the material of the three rollers is 45#steel ... corrosion prevent—paint.VI. Supply range and packingBody partUp and bottom rollers devices, main motor device, balance device, rack of ...