ROSTA AG

ROSTA AG

Stand H28

Contact details

5502 Hunzenschwil
Switzerland
www.rosta.ch

Since more than 70 years ROSTA AG is manufacturing machine components for the mechanical engineering based on a unique design of a rubber torsion spring offering the three technical functions of a spring device, a guide bearing and an anti-vibration mount in one mechanical element.
From Hunzenschwil, our head office and main manufacturing base, we do supply our machine components through our worldwide distribution network to the customers on all five continents. Six subsidiaries in Canada, Germany, Italy, China, USA and Australia are also manufacturing some of our ROSTA torsion springs locally, according to the relevant market requirements.
With the wide range of our standardized machine components, which are worldwide available from stock, most of the requirements on a mechanical spring device for the general machine construction can be fulfilled. Does the ready-made spring not fit your requirements, we will “tailor” it for you. Please ask our customer service for a call, we will be pleased to design your customized built-in part.

Products

  • Oscillating Mountings

    Our core business, the elastic, neutral reaction and almost vibration-free suspension of oscillating machines and screens in the processing industry. For all freely vibrating systems, from onion sorting shakers in the tinned food industry up to the ore dewatering screens in mines, ROSTA offers standardised suspension variants with the highest levels of isolation. The support of gyratory screening machines is our speciality; we supply vibration-damping universal joint suspensions for load supports from 200 to 40'000 N. For fast, wear-free shaker conveyors with crank drives, ROSTA has a wide range of standard rocker arms for the careful suspension of conveyor and screen troughs - and even for systems with natural frequency operation!

    http://www.rosta.ch/en/products/oscillating-convey...

  • Tensioner Devices

    The concept and production of machine components for the maintenance-free tensioning of belts and chain drives has always been a core competence of ROSTA. Whether for the initial tensioning of large belt drives with our self-adjusting motor base suspensions or for efficient secondary tensioning by means of easy-to-install chain and belt tensioners, ROSTA has the standardised solution! When using the ROSTA tensioning systems, problems such as the compensation of lengthening due to age and belt slip are no longer an issue in your machine design - you can simply forget the periodical re-tensioning maintenance!

    http://www.rosta.ch/en/products/tensioning-technol...

  • Motorbases

    The concept and production of machine components for the maintenance-free tensioning of belts and chain drives has always been a core competence of ROSTA. Whether for the initial tensioning of large belt drives with our self-adjusting motor base suspensions or for efficient secondary tensioning by means of easy-to-install chain and belt tensioners, ROSTA has the standardised solution! When using the ROSTA tensioning systems, problems such as the compensation of lengthening due to age and belt slip are no longer an issue in your machine design - you can simply forget the periodical re-tensioning maintenance!

    http://www.rosta.ch/en/products/tensioning-technol...

  • Rubber Suspension Units

    You need a suspension system that does not even exist yet! We will be very happy to manufacture it for you. ROSTA currently manufactures 2,374 customer-specific special Rubber Suspension units! From the smallest production runs in welded construction up to large volumes for the automotive industry, in sintered metal construction or precision moulding. For the construction of special machines, in which the requirements on the suspension system that change almost daily, 124 standard modules are available with assembly clamps for individual solutions. The damping of vibrations is also a strength of the ROSTA Rubber Suspension units. A wide range of highly efficient anti-vibration mounts guaranteed against tearing are included in our standard program.

    http://www.rosta.ch/en/products/rubber-suspension-...

  • Anti-Vibration Mounts

    ROSTA currently manufactures 2,374 customer-specific special Rubber Suspension units! From the smallest production runs in welded construction up to large volumes for the automotive industry, in sintered metal construction or precision moulding. For the construction of special machines, in which the requirements on the suspension system that change almost daily, 124 standard modules are available with assembly clamps for individual solutions. The damping of vibrations is also a strength of the ROSTA Rubber Suspension units. A wide range of highly efficient anti-vibration mounts guaranteed against tearing are included in our standard program.

    http://www.rosta.ch/en/products/rubber-suspension-...

Product news

  • Oscillating Mountings Type HS (Hanging Screen)

    ROSTA type HS oscillating mountings
    for the suspension of discharge chutes and suspended screens

    The ROSTA Type AB oscillating mountings have created a good name for themselves as screen box suspensions in screening technology thanks to their high isolation effect, high level of lateral stability, security against overload and high resistance to corrosion.

    For reasons related to the process, approximately 20 % of all screen and discharge chutes have suspended mounts under material bunkers and metering shafts. ROSTA Type AB oscillating mountings are also often used for the assembly of these vibration units, as a suspended screening machine can be directly connected to silos and bunkers using AB suspensions without having to organise complicated yoke constructions.

    Up to now, however, the isolating effect resulting from AB oscillating mountings with suspended vibration units has been less efficient, especially as the suspensions, which have been designed for pressure loads, are considerably stiffer under tensile loads, with widely opened guide arms.

    The new HS suspensions (Hänge-Sieb / suspended screen) have a guide arm geometry that is designed for tensile loads. With ideal loading, the natural frequency of this suspension thereby sinks from its former 5.5 Hz to only approx. 3.5 Hz, which guarantees an isolating effect > 97 %.

    The HS suspensions are now available for the load values listed below:

    HS 27 for tensile loads of 500 - 1,250 N
    HS 38 for tensile loads of 1,200 - 2,500 N
    HS 45 for tensile loads of 2,000 - 4,200 N
    HS 50 for tensile loads of 3,500 - 8,400 N
    HS 50-2 for tensile loads of 6,000 - 14,000 N

    Customer benefits from ROSTA type HS oscillating mountings

    - Direct installation under bunkers = No complicated yoke construction required
    - Low natural frequency of the suspension = Low residual vibrations in the silo structure and the building
    - High lateral stability = Short, controlled and safe run-out of the vibrating machine

    http://www.rosta.ch/en/products/oscillating-convey...

Contact ROSTA AG now!

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