REDWIRE Universal joints, oscillating mountings by Rosta work for gyratory sifters

December 2, 2021 REDWIRE is news you can use from leading suppliers. Powered by FRASERS.

Posted by Rosta Inc


Manufacturer: Since 1945 Rosta has been developing high quality standard and custom made dynamic machine-engineered rubb... Read more

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Rosta offers the Type AK and AV elements.

Rosta Inc. makes a wide range of machine components, having mastered several types of rubber-suspension technology, including oscillating conveyors. In this field, the company manufactures such solutions as universal joints and oscillating mountings. These products are especially suited for supporting gyratory screening machines, which are also referred to as gyratory sifters. These are machines that businesses often use in grain and flour conditioning, pharmaceutical powder preparation, and the chipboard sector.

The two element models available

This equipment is distinguished by its circular screening motion, which provides a fast, full covering of the complete screen surface to create high throughput. Rosta can offer the appropriate universal joints and single joint elements for customers who design hanging or upright sifters, for loads of up to 40,000 Newtons and rotation as high as 380 min-1. Two models of elements for gyratory sifters are available: Type AK universal joints, and Type AV oscillating mountings.

Type AK is a maintenance-free elastic joint that can be moved in any direction. It is useful as a universal joint support for suspending or mounting gyratory screens, screening tables, tumbling oscillators, sorters, and screening machines that are positively driven by eccentrics or freely oscillating with unbalanced drive. Types AK 15-50 have aluminum square sections, while AK 27 to AK 100-4 have SC iron housing. All other sizes have steel cores and are made of welded steel structures.

Type AV oscillating mountings are also maintenance-free elastic joints, but they are built to guide circular motions of handing screens, including gyratory sifters and screens in flour and paper mills or chemical processing plants. These mountings have rubber inserts larger than those in other Rosta elements, which allows intensive absorption of hanging-sifter vibrations, in addition to stronger protection for building structures and ceilings. Type AV 50 has SC cast iron housing, while other sizes have cast iron aluminum housing. All are constructed from aluminum profiles.

The Rosta crew makes these mountings with inner squares that are made out of light metal profiles. The components are compatible with previous models because all of the dimensions are the same.

To learn more, contact Rosta.


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Posted by Rosta Inc


Manufacturer: Since 1945 Rosta has been developing high quality standard and custom made dynamic machine-engineered rubb... Read more

Contact supplier