The flat rubber sandwich mounts both the loaded face and the rubber cross section are rectangular. As with circular sandwich rubber pads it is possible to have a pure compressive stress or a pure shear stress or a combination of both. Two flat rubber mounts shear springs would be used which are preloaded in compression to avoid possible tensile strain. The rubber layer is intentionally narrowed by 5 to 10% using compression. In this way it is possible to choose a shear loading three times higher than that for a flat rubber mounts without compression.
Flat rubber mounts of greater length are called rubber strips or mats. They are avilable in lengths up to 2,000 mm and are specially suitable for isolating the vibration of heavy machines.
Rubber strips are delivered in stock lengths, but can also be cut to any required length. The metal parts are sufficiently thick for holes to be drilled and tapped later for mounting purposes.
Installation example of flat rubber mounts are shown in Figure 1.
Figure 1 Example of flat rubber mounts sub-assemblies
Flat Anti Vibration Mount shown in the picture depicts how it acts as an intermediary device in controlling the friction of two parts in an electronic device. It safeguards the machine and controls the heavy noise caused through vibration or shock.
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