Screw and barrel

Specification of rubber screw barrel:

Diameter 30-250, L / d15-40 screw.

Standard nitriding, double alloy, all hard screw are available.

Common type, gradual change type, mutation type and various barrier type screw, pin screw, wavy screw and exhaust screw can be selected. The compression ratio can be changed according to the customer's requirements. The cylinder can be selected as slotted forced feeding system, split type, etc.

Technical parameters:

Depth of nitriding layer: 0.5-0.8mm

Nitriding hardness: 900-1020hv

Nitriding brittleness: ≤ grade 1

Surface roughness: RA 0.4 μ M

Hardness of chromium plating layer: ≥ 950hv

Hardness of double alloy: HRC 55 ° - 65 °

Thickness of double alloy: more than 2mm