4/2/2023 0 Comments Spring isolator![]() ![]() Sometimes this premature deterioration stems from repeated overstress loadings, sometimes from fatigue failures of vital parts, and sometimes from a combination of both. These disturbances erode the life of mechanical and electronic equipment – driving machinery from service long before necessary. Shock and vibration rank among the most destructive agents in industrial environments. Vibration isolators typically include wire rope, spring mount, ceiling mount and seismic mount types while shock mounts include elastomer, neoprene, pad-type, stud, plate and roof mounts. In machinery applications, vibration damping mounts acting like a shock absorber, allowing motors and equipment to operate more quietly and efficiently. When the surface on one side of the mount receives a sizable force or shock, the resulting tremors are unable to pass through to the other surface, as they would if the two surfaces connected by more conventional means. The basic function of a vibration isolation mount is to act as a highly stable buffer between the source of the vibration and the object or surface being isolated. Eventually this adversely affects product quality and can even bring production to a stop. Those vibrations cause damage to the equipment and create unsafe working conditions. Applications such as large motors and industrial machines generate powerful vibrations and excessive noise when active. Spring isolation mounts for floor-mounted equipment shall be Model FDS, as manufactured by Kinetics Noise Control, Inc.Vibration isolation mounts protect machinery by reducing the amplitude and frequency of vibrational waves. Springs shall be color coded or otherwise identified to indicate load capacity. Springs shall be selected to provide operating static deflections shown on the Vibration Isolation Schedule or as otherwise indicated on the project documents. The lower load plate shall incorporate a non-skid noise isolation pad and shall have provisions for bolting the isolator to the supporting structure, as required. The upper load plate shall be provided with steel leveling bolts, lock nut and washer for attachment to the supported equipment. Springs shall be assembled or welded between top and bottom load plates. Springs shall have a lateral stiffness greater than 1.0 times the rated vertical stiffness and shall be designed to provide a minimum 50% overload capacity. Vibration isolators shall be free standing, unhoused, laterally stabile steel springs. Model FDS Isolators are for use on equipment that is not subject to lateral forces such as wind. Model FDS spring mounts are used in a wide range of applications, some requiring Kinetics equipment bases in addition to spring isolators, and can be used to support and isolate the following equipment types: reciprocating air or refrigeration compressors, close coupled and base mounted pumps, packaged air handling and refrigeration equipment, centrifugal fans, internal combustion engines, and similar equipment. Operating static deflections are available to 4″ (102 mm) to compensate for long span floor structures. Model FDS spring mounts are typically used to reduce the transmission of noise and vibration from low speed mechanical equipment into a building structure. Kinetics Model FDS spring mounts are recommended for use in isolating floor mounted sources of noise and vibration located near critically quiet areas. Kinetics Model FDS Spring Isolators are highly effective for control of both high and low frequency vibration produced by reciprocating air or refrigeration compressors, pumps, packaged air handling and air conditioning equipment, centrifugal and axial fans, internal combustion engines, etc. Custom isolators with higher deflection and greater load capacities are also available. FDS isolators are available with deflections to 4″ (102 mm) and with load capacities to 23,200 lbs. FDS isolators have provisions for bolting the isolator to the structure. In heavier capacities, springs are welded to the load plate assemblies and are furnished with a neoprene noise isolation pad. ![]() In lighter capacities, FDS Spring Isolators have molded neoprene bottom load plate assemblies. Springs are polyester powder coated, with a 1000-hour salt spray rating per ASTM B-117. To assure stability, the spring isolators have lateral spring stiffness greater than 1.0 times the rated vertical stiffness and are designed to provide a minimum of 50% overload capacity. Kinetics Model FDS Spring Vibration Isolators consist of high deflection, free-standing, unhoused, large diameter, laterally stable steel springs assembled into an upper load plate and leveling assembly. ![]()
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