Screw auger in stainless steel

Screw auger in stainless steel with double thread and large pitch. This screw auger is a great example on BEMA’s capabilities to manufacture complicated screw rotors. This screw rotor require all our skills to manufacture a product satisfying the customer needs:

• Large diameter to a relative small inner diameter
• Large pitch compared to the outer diameter (ratio about 1,2)
• Double threaded flights

Look on the pictures and see how we are able to make the screw flights fit. Learn more about screw rotors from BEMA.

When manufacturing such type of screw augers it is necessary to have a close cooperation between the people who manufacture the screw flights and the black smith who are mounting and welding them to the shaft. The double thread require that the screw flights are manufactured with a precise pitch in order to get an acceptable result of the auger.

What is important if you want us to manufacture an auger?

1. Give us a drawing with all needed measurements
2. Be prepared to receive our production drawing which might differ from your auger drawing. We do not expect you to be an expert in auger manufacturing
3. When we have agreed upon the details in our drawing revise your own drawing. We will keep all information in your item no., but it is important for you that there is a correspondance of your drawing and our drawing of the auger. Specially if you have a quality department who check upon the drawing you have created of the auger.

FAQ About Manufacturing Stainless Steel Screw Augers

1. What makes the manufacturing of this screw auger particularly complex?

This auger combines a large outer diameter with a relatively small inner diameter, a large pitch ratio of about 1.2, and double-threaded flights. Producing these elements with precision requires advanced forming, welding, and alignment skills.

2. How does BEMA ensure precision in double-threaded screw flights?

Double-threaded flights demand extremely accurate pitch manufacturing. BEMA coordinates closely between the team forming the flights and the blacksmiths who mount and weld them, ensuring both threads align perfectly along the shaft.

3. What information must customers provide before production can begin?

A complete drawing with all necessary measurements is required. BEMA then prepares a production drawing, which may differ slightly to meet manufacturing requirements. Once both parties agree on the final version, production can begin.

4. Why might BEMA’s production drawing differ from the customer’s original drawing?

Manufacturing screw augers often requires adjustments to ensure structural integrity, weldability, and precise pitch. BEMA incorporates these practical considerations into the production drawing while maintaining the customer’s functional requirements.