We are actually one of the superior and independent distributors of spares, components and services for twin screw extrusion. We manufacture the entire wear and corrosion resistant screw elements to the greater standards to assure the compatibility with genuine parts. We also enhance the performance by using our premium range of screw essentials. Now, our screws are widely available for all sizes of machine ranged from 16mm to 160mm. All our products are compatibility with genuine components at the greatest standards of manufacture. Our lists of screw elements are including the following:

We are the worldwide leader in the supply of twin screw extruders, replacement components and support services for several industries such as master batch, powder coatings, plastics compounding and several others. We try to produce the utmost quality by specifically concentrating on the industry standard designs, aftermarket sales, reliability and support services. Our industry standard designs and processing segment enable the clients to take benefit of the extrusion cluster value scheme without accepting the greater prices of succeeding the new process segment geometry. We provide the industry’s most comprehensive selection of twin screw element replacement components and specialty wear solutions.

If you have any queries on the performance of your screw elements, you just give us call to discuss your needs and see how we can support you.

Why We First Choice for Service?

We are the one stop service hub for all twin screw users that are cost effective and accessible to all. We are more than a manufacturer and supplier of twin screw extruder and spare parts including screw elements, barrels and shafts and also a provider of service engineers. We also specialized in the following:

Process optimization

Machine upgrades

Screw and shaft cleaning as well as re-configuration

Project and design engineering assistance

Barrel upgrades and retrofit barrels for powder coating users

We are also committed to design, making and implementation of the advanced materials platform technology, which efficiently transforms and operates the materials in the field of biomaterials, bio refining, pharmaceuticals, food and plastics and more. We also make screw element in such way that it ensembles to the screw by its inner or outer diameter.

Twin screws are usually combined using several parts of different structures for a specific purpose. This particular type is often called a segmented screw. Omega provides custom made segmented screws and shafts in a specific size, even when that size is more than 10 meters. A few examples are shown below.

Omega applies alloy coating strategies to protect the surface of the twin screw from corrosion and abrasion caused by additives in engineering material and thermoplastic material. In doing so, the screw becomes much more durable. This screw type is known as a bimetallic twin screw.

Three different types of bimetallic screws with different protection strategies are shown below.

All working face covered by alloy layers

Flight covered by alloy layers

The screw body with a driving function is made using a high toughness steel, and the flight is made using an powder metallurgy steel

Recommended materials for twin screw

WR5

W6M5Cr4V2(M2)

C12MoV(D2)

Major Chemical and Hardness Comparison Table of Recommended Material for Segment Screw & Kneading Disk

Name Material Type Fe C Cr Si Mn Mo Ni V W Hardness WR 5 Powder Tool Steel Bal 2.4～2.7 5.0～7.0 0.5～1.0 ≤0.5 1.3～1.6 -- 9.0～10.0 -- HRC 60 ～ 64 W6M5Cr4V2(M2) High Speed Steel Bal 0.80 ～ 0.90 3.8 ～ 4.4 0.20 ～ 0.45 0.15 ～ 0.40 4.5 ～ 5.5 ≤0.30 1.75 ～ 2.20 5.50 ～ 6.75 HRC 60 ～ 64 C12MoV(D2) Die Steel Bal 1.45 ～ 1.70 11.0 ～ 12.5 ≤0.40 ≤0.40 0.4～0.6 ≤0.25 0.15 ～ 0.30 -- HRC 58 ～ 60

Recommended materials for shaft

WR 30

45CrNiMoVA

40CrNiMoA(4340)

Major Chemical and Hardness Comparison Table of Recommended Material for Screw Shaft

Name Material Type Fe C Cr Si Mn Mo Ni Other Stand Torque Level WR 30 High Nitrogen Steel Bal 0.25 ～ 0.30 14.0 ～ 16.0 0.9 ～ 1.10 0.9 ～ 1.1 0.85 ～ 1.10 0.40 ～ 0.60 N 0.3 ～ 0.5 11 Grade，L/D ≥48 45CrNiMoVA High Torque Steel Bal 0.42 ～ 0.49 0.80 ～ 1.10 0.17 ～ 0.37 0.5 ～ 0.8 0.20 ～ 0.30 1.30 ～ 1.80 V 0.1 ～ 0.2 9 Grade，L/D 48 40CrNiMoA(4340) Torque Steel Bal 0.37 ～ 0.44 0.60 ～ 0.90 0.17 ～ 0.37 0.5 ～ 0.8 0.15 ～ 0.25 1.25 ～ 1.65 -- 8 Grade，L/D 36 ～ 48



