Two types: revering and non-reversing, suitable for secondary rolling and finish rolling of common straight carbon steel, alloy steel stainless steel, copper and aluminum strips. It is composed of main motor, gear reducer, double helical spur gear, universally-jointed axle, support, working seat, power screw down gear, left and right draw-works, hydraulic station and DC electric control. Material of backing roll: 9Cr2Mo. Technical Data: Max. press3000KNMode of transmissionBacking-roll transmissionEntry size2.5×380(mm)Final size0.2×380(mm)Cross section of frame250×300(mm)Window size550×1680mmSize of working rollΦ120(140)×450(mm) needle roller bearingSize of backing rollΦ450x450(mm)FCD bearingMain motorZ4Motor for screw down gearYZ211KwRolling speed100m/min for special steel and 180 m/min for common straight carbon steelSpeed of screw Dow gear0.058mm/sGear reducerZLYWorm gear for screw downA=315Double helical spur gearA:690; Mn=12Weight of main frameApprox.31.5 tRecoiler(alternative)Hydraulic or soliddimension4980×2400×3000