This article shows this relatively unknown feature of AMC spring hangers.
Acoustic spring hangers are conceived to suspend acoustic ceilings or other hanging elements from structural ceilings which are typically made of reinforced concrete or timber. These structural ceilings have usually horizontal surfaces and the threaded rods are expected to be positioned perpendicular to them. The threaded rods that connect the spring hangers to the suspended ceiling are also expected to be perfectly vertical on paper.
The real installations however demonstrate that these ideal conditions are not always met. The surfaces of the structural ceilings are not always perfectly flat they are not always perfectly horizontal the threaded rods are not always installed in a perfect vertical position and the alignment with the connection points below like the framing of the plasterboard is not always perfect. All these phenomena usually make the spring hangers to work in a non-perfect vertical axis.
One of the main risks an acoustic spring hanger faces if the threaded rod is not parallel to the main housing is that the threaded rod might get in contact with the main housing creating an acoustic bridge and bypassing the coil spring. If this happens the acoustic insulation performance can be greatly reduced.
In order to avoid this problem some AMC acoustic spring hangers have a clearance that allows the threaded rod to swing within a 35° angle envelope without producing a metal-to-metal contact:
Thanks to this feature, irregularities in the ceiling surface or non-perfect alignments do not produce major issues nor imply costly reworks.
This feature is present in the following AMC acoustic spring hangers:
Do not hesitate to contact our application engineers for more information on these products.
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