We are always proud to talk about our complete conveyor solutions, whether it be on our own or in collaboration with our business partners. However, we should not forget our screw flights, which in reality are the most important part of all our conveyor solutions. For a screw conveyor to be able to carry out its task through long hours of operation with minimal maintenance, the screw flights have to be precisely and perfectly built.

Here at BEMA, we have 75 years of experience in the manufacture of screw flights, and we know the meaning of accuracy and precision – both in relation to the inner and outer dimensions, as well as the calculation of pitch and thickness. It may sound like a matter of course. However, it does represent the core of a good screw conveyor solution, and is everything but simple.

As an example, we recently manufactured a solution with Ø1145 screw flights in 15mm HARDOX for one of our customers. Although the total order was for 7 pieces of right wound and 7 pieces of left wound flights, we had to start with a single initial flight, in order to make sure that it could be made to fit the particular specifications. These are screw flights with a large pitch and material thickness, which places great demands on those making the calculations as well as the operators.

Our construction department manufacture special flights, which are made to fit the given screw rotor. The precision of our flights will save many hours of workshop adjustment during manufacture, thereby reducing costs. That is why we are constantly working to improve our manufacture of screw flights – to ensure an optimal fit when they are welded to the core housing.

One of our specialties are large flights of up to ca. Ø2500 in Hardox and other types of hardened steel. These are sandwich panels, able to meet the requirements for particularly abrasive applications. However, we do also make the smaller ones, if these are more to your liking!