Rubber Machine Screw Barrel

 Barrel Surface Roughness: Ra0.4um

Barrel Straightness: 0.015mm

Inner Diameter: Φ14-Φ300 X 8000mm

L/D Ratio: L/D=10-60

Screw Surface Roughness: Ra0.4μm

Nitriding Layer Depth: 0.5-0.8mm

Nitriding Layer Hardness: HRC950-1020

Nitriding Fragility: < = Grade one

Screw Straightness: 0.0015mm

Cr-Plating Layer Depth: 0.03-0.08mm

Bimetallic Layer Depth: >2.0mm

Bimetallic Layer Hadness: HRC55°-72°

Material:

Cold feed rubber screw and barrel: Specification: Ф40-Ф300MM
                                 L/D Ratio: 8-20
Hot feed rubber screw and barrel: Specification: Ф30-Ф250MM
                                   L/D ratio: 4-8
Pin-rubber screw and barrel: Specification: Ф60-Ф250MM
                               L/D ratio: 12-18

Screw types:You can choose different structures of the screw according to different plastic material, which can increase the plasticizing effect, such as gradual, mutant, wavy, double-screen, distributary, separating, exhausting, pin type, mixed, double screws, three screws.