Ø35 mm Twin Screw Extruder

ZC35 Twin Screw Extruder – Technical Specifications

Feeding System

• Twin screw metering feeder connected to the first barrel for precise material dosing

• Volume-type metering feeder with horizontal blender to prevent bridging

• Feeder motor & reducer: WB-120-LD-1.1 cycloidal needle wheel deceleration motor, 1.1 kW

• Speed control via AC frequency inverter

• Twin-screw, non-mesh feeding screw made of 45# steel with surface hard chromium treatment

Main Motor & Gearbox

• Y2 type, 4-level AC motor, 18.5 kW

• Speed control via AC frequency inverter

• High-torque gearbox with nodular cast iron shell, shock absorption, noise optimization

• Input speed: 1480 rpm / Output speed: 600 rpm

• Needle bearings: Japanese IKO, radial axletrees: imported NSK

• Gear system: 20CrNi2MOA hardened teeth, ISO1328-1995 standard, carburized & quenched

• Advanced gear grinding ensures high strength, even load, low noise, and low vibration

Screw & Shaft

• Screw diameter: 35.6 mm – L/D ratio: 44:1

• Modular screw blocks: conveying, mixing, kneading, reverse rotation (tandem arrangement)

• Screw element material: W6Mo5Cr4V2, high-temperature vacuum quenched (HRC 60–64)

• Co-rotating twin screw with mesh-type rotation

• Back-tooth connection between screw head and cap for secure fastening

• High-toughness 40CrNiMoA alloy steel shaft, tempering hardness HB300–350

• Involute connection between screw and shaft for high strength and easy maintenance

Barrel & Heating

• Material: 45# steel with fine double alloy casting bushing inside

• 11-section barrel (total length: 1650 mm)

  • 1 Feeding section

  • 1 Nature exhaust section

  • 1 Vacuum section

  • 1 Extruder section

  • 8 Closed sections

• Soft water cooling system with independent pipes and 0.55 kW pump

• High-quality cast aluminum heaters

• Water circulation pipes: φ60 mm, copper connection pipes

• Heating exchanger: LS-416

Vacuum & Screen System

• Water-ring vacuum pump: 0.75 kW, SK-0.8 type, vacuum -0.07～0.09 MPa

• Vacuum tank: 350×300 mm, independent outside installation for easy maintenance

• Manual screen exchanger between barrel and head

Die Head & Pelletizing

• Strand die head, die plate, heater set

• Melt pressure and temperature sensors installed

• Interlock system for main frame, feeder, and gearbox

• Overpressure protection ensures safe operation

Electrical Control System

• 220/380/480V, 50/60Hz, 3-phase (custom power available)

• AC contactor: SIEMENS

• Main motor air switch: LG

• Intermediate relay & temperature controller: OMRON

• Low-voltage buttons and switches: DELIXI

• Electric control cabinet includes both temperature and drive systems

Water Strand Auxiliary System

• Stainless steel water tank (3 m)

• Dryer: 1.1 kW motor

• Pelletizer: 1.5 kW motor

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Key Advantages:

• High-torque, energy-efficient twin-screw design

• Low noise, low vibration operation

• Modular screw blocks for flexible production

• User-friendly control system with advanced safety interlocks

• Durable construction with premium brand components for long service life