Screws and Barrels for Injection Moulding Presses
Screws and Barrels for Injection Moulding Machines
Harden Industries supply bi-metallic barrel, feed screw, tip assembly, barrel adapter for injection moulding machines. Focusing on good workmanship and reliable quality, we carefully choose the design (tips and mixing heads) to match a very broad range of applications. Chrome coating of screws and bimetallic barrels are available.

Screw & Barrel Ranges for Injection Moulding Machines
Screw Diameter |
25mm -150mm |
Screw Length |
L/D ratio 15 – 46 |
Screw Technical Specifications
Steel Material |
DIN 41CrA1Mo7 / AST M4140 / GB 38CrMoAlA , 4Cr5MoSiVl |
Heat Treatment |
Tempered and nitride, nitride depth: 0.5 mm – 0.7 |
Surface hardness: |
HV900 – HV1, 000 |
Chromate plating: |
Thickness 0.05 mm – 0.10 mm, hardness HV950 |
Special treatment: |
Bimetallic barrel |
Screw straight tolerance |
0.015 mm/m |
Surface roughness |
Ra 0.4μm |