site name Siwertell

Two inventors - one great idea

For over fortyfive years Siwertell screw-type unloaders have provided the world’s cleanest, most efficient dry bulk unloading performance, along with very high capacities. This impressive legacy is carried forward by our commitment to continuous development. Our current capabilities meet and often exceed the market’s growing demands for increased efficiency and minimal environmental impact.

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Original innovators of screw conveyor technology

The success of Siwertell screw conveyor technology is based on our unique, patented inlet feeder, designed and developed by the two Swedish inventors, Olle Siwersson and Gunnar Tell, who combined their surnames to give our brand its famous name.

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Counter-rotating inlet feeder

Exceptional performance

Siwertell screw conveyor technology depends on the exceptional performance of its counter-rotating inlet feeder, developed by two Swedish inventors, Olle Siwersson and Gunnar Tell, who combined their surnames to give the brand its famous name. Their initial work was aimed at the agricultural market, but the potential for ship unloading applications was obvious and in 1974 the Siwertell ship unloader was born, along with the company AB Siwertell.

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