Monday 20 July 2015

What are restrained spring mounts and their application?


Restrained spring mounts are isolators that provide vibration isolation for mechanical systemsand equipment. These isolators are designed in a way to limit vertical and lateral movement of the top support plate caused by equipment operation or wind loading. The uniquely-engineered springs are designed to provide maximum isolation to the mechanical equipments.
There are mainly two types restrained spring mounts namely open restrained spring mounts & closed restrained spring mounts.
·         The Open Restrained Spring mounting is designed specifically for applications where transmission of low frequency machinery vibration to a building structure must be reduced to avoid physical damage or nuisance to the occupants. It is a low frequency mounting designed to limit vertical movement on equipment such as cooling towers and chillers etc. Applications located at roof level can be successfully mounted on ORS units as any movement caused by high wind loads will be limited. Equipment which contains large volumes of liquid will benefit from installation on ORS mountings because during “draining down” upward movement is restricted thus avoiding damage to pipe work and electrical connections.
·         Close restrained spring mounts isolators provide vibration isolation for mechanical equipment. These close housed isolators are-engineered springs that provide very good isolation. Closed restrained spring mounts are a sturdy construction with robust design that offers excellent performance.
Features
·         Spring Mounts provide the good deflection of up to nearly 2″ to ensure excellent isolation.
·         Made of high quality metal springs & rubbers provide excellent isolation
·          The spring serves to isolate a broad range of disturbing vibration frequencies, while the rubber is a high frequency or noise break
·         The vertical and lateral restraints consists rubber inserts to avoid any metallic contact and ensure adequate radial clearance for isolation efficiency.

Application of restrained mounts

The applications include both indoor and outdoor mechanical equipment isolation with lateral loads and minimal to no change in operating weight. Typically these equipments may be used in cooling towers, base-mounted fans, chillers, air handling units and much more.

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