4. Main extruder parameter:

•  SJ75/25  Extruder 
• Screw  diameter: Ø75mm
• Screw L/D: 25:1
• Screw form: Efficient gradient screw.
• Screw rod rotation speed: 0-90r/min
• Max extruding output: PVC: 160kg/h
• Main motor power: 37kW  ACmotor, controlled by speed control system
• Screw material: 38CrMoALA, Surface nitriding treatment, nitriding depth 0.5-0.8mm, Surface hardness≥HV840
• Screw rigidity≥HV940
• Screw cooling: center hole water cooling.
• The crosshead: three piece Haff clamp with full tools, easy to operate.
• N. of heated/cooled zones:  6 zone. Head section 2, eye mold section 1, head lock section 1, material barrel section 6 section. six high-power DF series axial cooling fans
• Machine barrel material: 38CrMoALA，Surface nitriding treatment, nitriding depth 0.5-0.8mm,
• The barrel adopts electric heating: the cast aluminum heating ring has good heating and insulation performance.
• The gearbox: the gears are all with 40Cr, the gear surface is anneal and tempered with high frequency, the surface hardness is hrc50-55, the shaft is tempered with #45  steel, 
• Temperature controller：RKC
• The temperature controller adopts intelligent electronic display calculus temperature controller, the temperature can be automatically adjusted between 0-399 ℃, and the temperature control accuracy is ± 2 ℃
• Ø50mm Round jacket crosshead
• Adjustable crosshead, right angle circular structure
• Heating of cast aluminum
• Max diameter of mold sleeve： Ø45mm, max extrusion core：Ø40mm
• The cross head material is made of steel, with surface nitriding treatment, nitriding depth of 0.5-0.8mm, and surface hardness ≥ HV840
• Features: When replacing the mold core or sleeve, there is no need to remove the mold core rod. After adjusting the eccentricity at low speed, the concentricity remains unchanged when the speed increases to normal production speed, and the eccentricity is required to be less than 15%,
• Equipped with a trolley, easy to move
• SJ120/25  Extruder 
• Screw  diameter: Ø120mm
• Screw L/D: 25:1
• Screw form: Efficient double BM+mixing customized screw, one low smoke and halogen-free screw each.
• Screw rod rotation speed: 0-65r/min
• Max extruding output: PVC:440kg/h
• Main motor power: 132kW  ACmotor, controlled by speed control system
• Screw material: 38CrMoALA, Surface nitriding treatment, nitriding depth 0.5-0.8mm, Surface hardness≥HV840
• Screw rigidity≥HV940
• Screw cooling: center hole water cooling.
• The crosshead: three piece Haff clamp with full tools, easy to operate.
• N. of heated/cooled zones:  6 zone. Head section 2, eye mold section 1, head lock section 1, material barrel section 6 section. six high-power DF series axial cooling fans
• Machine barrel material: 38CrMoALA，Surface nitriding treatment, nitriding depth 0.5-0.8mm,
• The barrel adopts electric heating: the cast aluminum heating ring has good heating and insulation performance.
• The gearbox: the gears are all with 40Cr, the gear surface is anneal and tempered with high frequency, the surface hardness is hrc50-55, the shaft is tempered with #45  steel, 
• Temperature controller：RKC
• The temperature controller adopts intelligent electronic display calculus temperature controller, the temperature can be automatically adjusted between 0-399 ℃, and the temperature control accuracy is ± 2 ℃
• Ø100mm Round jacket crosshead(2 pcs: one small and one big)
• Adjustable crosshead, right angle circular structure
• Heating of cast aluminum
• Max diameter of mold sleeve： Ø70mm, max extrusion core：Ø65mm
• Max diameter of mold sleeve： Ø105mm, max extrusion core：Ø100mm
• The cross head material is made of steel, with surface nitriding treatment, nitriding depth of 0.5-0.8mm, and surface hardness ≥ HV840