Sound Insulation Pneum. Impulse Knocker Type QJ

The undamped impulse knocker reaches a sound level of 95 to 100 dBA. A Vulkollan buffer can be supplied as an accessory that can be mounted at the end of the piston rod. The noise development is then decreased by approx. 5 dBA , but the effect of the knocker is also reduced. If using the Vulkollan buffer the mounting distance of the impulse knocker to the point of impact must be adapted. See data sheet 100-130 item 8.
As sound levels produce can be mitigated only by sound insulation, the following devices are available from us:

Sound Insulation Hoods KSH

The sound insulation hood KSH… is placed over the impulse knocker and bolted on with an extension to the middle bolt of the knocker. A rubber edge protection profile is to held on the contact surface, which adapts to the contours. It should be ensures that there is no air gap between the contact surface and the sound insulation hood, otherwise the sound insulation is considerably reduced. The sound insulation hood is equipped with a rubber bushing for the compressed air hose and with sound absorbers for the purge air.

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