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Free Oscillation Systems

Type HS

The ROSTA Type AB oscillating mountings have created a good name for themselves.

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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.
The new HS suspensions (hanging 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 %. All HS oscillating mountings are also available in stainless steel (AISI 304) and interchangeable with the blue HS oscillating mountings!

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ART NR.

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Description Art. No. Type Load capacity G [N] Natural frequency Gmin. – Gmax. [Hz] A A max. load B B max. load C D E F H K L N M Z Weight [kg] Note
Free oscillation systems Type HS 27 07 311 001 HS 27 500 - 1250 4.2–3.8 164 202 84 68 70 ø11 80 105 4.5 17 60 35 80 60 1.6 tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HS 38 07 311 002 HS 38 1200 - 2500 3.6–3.3 223 275 114 92 95 ø13 100 125 6 21 80 40 104 90 4.9 tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HS 45 07 311 013 HS 45 2000 - 4200 3.3–3.0 265 325 138 113 110 13x27 115 145 9 28 100 58 132 100 9.0 tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HS 50 07 311 014 HS 50 3500 - 8400 3.2–2.9 288 357 148 118 120 17x27 130 170 12 40 120 60 165 120 15.1 tensile load and cold flow compensation (after approx. 1 year).
Free oscillation systems Type HS 50-2 07 311 015 HS 50-2 6000 - 14000 3.2–2.9 288 357 148 118 120 17x27 130 170 12 45 200 70 250 120 23.0 tensile load and cold flow compensation (after approx. 1 year).
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