Pneumatic And Hydraulic Equipment Page 424

ADVANTAGES OF FIRESTONE AIRMOUNT ISOLATORS Why u se an Airmount isolator rather than a coil spring or other type of isolator? UNSURPASSED ISOLATION CAPABILITY Airmount isolators can provide the highest degree of isolation of any type vibration isolator. System natural frequencies as low as 60 cycles per minute (1 Hertz) are available. The addition of an auxiliary reservoir can provide even lower system frequencies. In order to achieve similar results from a conventional coil spring isolator, a real deflection of 9 inches would be required. CONSTANT ISOLATION EFFICIENCY Airmount isolators are unique in that the system's natural fre- quency does not change significantly with changes in load. This unique feature, combined with accurate height control, will allow the use of the same Airmount isolator at each mounting point of an unevenly loaded machine. ACCURATE HEIGHT CONTROL Airmount isolators provide accurate height control through regula- tion of internal air pressure. This feature eliminates the fatigue and permanent set found in the use of other types of vibration isolators. WIDE SIZE RANGE Airmount isolators are capable of isolating loads of 100 pounds per mounting point to over 100,000 pounds per mounting point. COMPACT INSTALLED HEIGHT Airmount isolators can carry the loads and provide the isolation described above at installed heights as low as 2.5 inches. Coil springs providing equal isolation would require a free height of 5 to 25 inches. EXTENDED EQUIPMENT LIFE Airmount isolators extend equipment life through their superior isolation capabilities. EFFECTIVE NOISE REDUCTION Airmount isolators reduce structurally transmitted noise. Airmount isolators are also quiet in them- selves, since there is no spring chatter as found in conventional coil springs. VERSATILE Airmount isolators can be used not only to protect structural members from vibrating machinery, but are also widely used to protect delicate equip- ment from structurally transmitted vi bration. AIR SPRING BELLOWS CONSTRUCTION An air spring is a carefully designed rubber/fabric bellows which contains a column of compressed air. The rubber bellows itself does not provide force or support load. This is done by the column of air. Firestone air springs are highly engineered elastomeric bellows with specially designed metal end closures. Our standard two ply air spring bellows is actually made up of four layers: a. An inner liner of calendered rubber. b. One ply of fabric reinforced rubber. c. A second ply of fabric-reinforced rubber (with the cords at a specific bias angle to the first ply). d. An outer cover of calendered rubber. Many of our air springs are also available in high strength con- struction for higher pressures. In this case, there are four plies of fabric-reinforced rubber, with an inner liner and outer cover. The two ply air spring is standard. If the high strength style number is omitted, then it is not currently available in that particular part. Each air spring bellows is identified by a style number. This style number is molded into the bellows during the curing (or vulcanization) process. Examples would be 16, 22, 313, 1T15M-6, etc... This identifies only the rubber/fabric bellows and not the complete assembly . There are several different end closure options available for most air springs; therefore, please always specify both the style number and the complete assembly order number (AON) . An example would be: Style #22, assembly order number W01-M58-6180. Both numbers are given on the individual data sheets. AIRSTROKE ACTUATORS AND ISOLATORS OUTER COVER SECOND PLY FIRST PLY INNER LINER Firestone (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com JHF Catalog [ Volume 7 ] 424 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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