Precision Extrusion Screw & Barrel Assembly

Custom-engineered screws and barrels manufactured from gas-nitrided and bimetallic alloys for maximum melt homogeneity and long operational life.

Concentricity

± 0.01 mm

Quality Standard

ISO Grade

Warranty & Service

Manufacturer Direct

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Direct engineering assistance from Ganesh Sutar & team for custom layout integration.

Machine Overview & Operating Principle

ITG Screw & Barrel assemblies are manufactured to exacting tolerances to maximize extrusion throughput, maintain precise melt pressure, and dramatically reduce abrasive and corrosive wear. Whether processing high-filler PVC, abrasive flame-retardant compounds, or engineering plastics, our screws are CNC-milled with custom flight profiles and barrier mixing sections.

Every barrel is deeply nitrided or centrifugally cast with bimetallic liners to deliver exceptional hardness, preventing premature dimensional expansion and maintaining consistent clearance tolerances throughout millions of production meters.

Engineering Highlights & Features

Manufactured from premium EN41B / 38CrMoAlA nitriding steel with optional bimetallic alloy lining
Surface hardness exceeding 68-72 HRC for superior abrasion and corrosion protection
Customized flight geometry tailored specifically to resin melt behavior and shear sensitivity
Precision ground and polished internal flight surfaces for zero-stagnation polymer flow
Strict concentricity and straightness testing before factory dispatch

Technical Specifications

Diameter Range	30 mm to 150 mm
L/D Ratios	20:1 up to 36:1
Material Options	EN41B Nitrided Steel, Bimetallic Tungsten Carbide
Surface Hardness	950 - 1050 HV (Nitrided), 60-65 HRC (Bimetallic)
Nitriding Depth	0.5 mm - 0.7 mm
Straightness Tolerance	≤ 0.02 mm / meter