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Free Oscillation Systems

Type AB-D

The AB-D offers a much higher loading capacity than the AB for the same compact design.

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The AB-D offers a much higher loading capacity than the AB for the same compact design. The linear spring deflection under load is still sufficient to assure for this oscillating unit the respectably low natural frequency of approx. 3.2 Hz. At a vibrator or wave frequency of approx. 16 Hz, this is sufficient for a high insulation efficiency of approx. 95%. As with all screening machine mountings from ROSTA, the characteristic of the AB-D assists the linear oscillation motion of the screen. No lateral guides are necessary for passing through resonance in a controlled manner; the mounting is laterally stable. This low-cost oscillating unit offers sufficient insulation for all plants that are not mounted on high screen platforms or steel structures "above ground".

The units are mounted by directly bolting the steel supports to screen and support structure.
The housings of the double rubber suspension units are of aluminium profile for sizes
AB-D 18 to AB-D 45, and in spheroidal graphite iron for the three sizes AB-D 50.

specifications & cad

ART NR.

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Description Art. No. Type Load capacity G [N] Natural frequency Gmin. – Gmax. [Hz] A A max. load B C D E F H I J K L M Z Weight [kg] Note
Free oscillation systems Type AB-D 18 07 281 000 AB-D 18 500 – 1200 6.1 - 4.4 137 112 115 61 50 12.5 90 3 9 9 74 31 30 30 1.3 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
Free oscillation systems Type AB-D 27 07 281 001 AB-D 27 1000 – 2500 5.4 - 3.9 184 148 150 93 80 15 120 4 9 11 116 44 50 35 2.9 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
Free oscillation systems Type AB-D 38 07 281 002 AB-D 38 2000 – 4000 4.3 - 3.4 244 199 185 118 100 17.5 150 5 11 13.5 147 60 70 40 7.5 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
Free oscillation systems Type AB-D 45 07 281 003 AB-D 45 3000 – 6000 3.7 - 3.1 298 240 220 132 110 25 170 6 13.5 18 168 73 80 55 11.5 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
Free oscillation systems Type AB-D 50 07 281 004 AB-D 50 4000 – 9000 3.7 - 2.9 329 272 235 142 120 25 185 6 13.5 18 166 78 90 55 13.8 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
Free oscillation systems Type AB-D 50-1.6 07 281 005 AB-D 50-1.6 6000 – 12000 3.6 - 2.9 329 272 235 186 160 25 185 8 13.5 18 214 78 90 55 18.5 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
Free oscillation systems Type AB-D 50-2 07 281 006 AB-D 50-2 8000 – 16000 3.5 - 2.8 329 272 235 226 200 25 185 8 13.5 18 260 78 90 55 22.5 * compression load and cold flow compensation (after approx. 1 year)..Please find additional important data like dynamic spring values and stroke limits in the ROSTA catalogue.
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