IRSTROKE ACTUATORS

IRSTROKE IRMOUNT The first successful application of airsprings for vibration isolation occurred during the late nineteen thirties. Airsprings were developed by Firestone to fill a need for a more efficient suspension system for highway trucks, trailers, and buses. Airide® springs, as they were named, provided the means for a suspension that reduced the amount of road shock and vibration transmitted into the vehicle. Millions of kilometers of actual use have proven the dependability and effectiveness of the air suspension concept using Airide springs by Firestone. Airmount isolators and Airstroke...

Standard Types AIR INLET UPPER BEAD PLATE UPPER BEAD PLATE BLIND NUT BELLOWS END CLOSURE BELLOWS GIRDLE HOOP BUMPER STUD PISTON LOWER BEAD PLATE THREADED HOLE CONVOLUTED AIR SPRING WITH CRIMPED BEAD PLATES REVERSIBLE SLEEVE AIR SPRING WITH CRIMPED BEAD PLATES MOUNTING PLATE AIR INLET M8 x 1.25 THREADED HOLE 9.5 mm DEEP BEAD RING BOLT BELLOWS GIRDLE HOOP BEAD RING CONVOLUTED AIR SPRING WITH STEEL BEAD RINGS (#22 is shown, with bead rings instead of crimped bead plate) 1M1A AIRSTROKE actuator BLIND NUT UPPER BEAD PLATE CLAMP RING BELLOWS GIRDLE HOOP LOWER BEAD PLATE LARGE CONVOLUTED AIR SPRING...

PLUMBING SYSTEMS There are three basic ways of controlling an air suspended isolation system: 1. Tank Valve System–With a tank valve in each isolator, each air spring can be inflated individually. The pressure in each must be checked periodically, because air will permeate through the bellows. For an idea of the permeation rate, a #116 will lose approximately 2 BAR over a period of one year (from 7 BAR to 5 BAR). 2. Three Point Regulated System–The Airmount isolators can be connected directly to the factory compressed air system using pressure regulating valves. This eliminates the need for periodic...

Selection Guide END CLOSURE OPTIONS Style Number High Strength Number Bead Plate Type Dim. C Number Bead Ring (bolt circle of Bolts (each Type diameter) (mm) ring) TYPE 1 bead plate SEE INDIVIDUAL DATA PAGE SIDE PROFILE Single Convolution Double Convolution TYPE 2 bead plate 1/4 OR 3/4 BSP AIR INLET TYPE 3 bead plate Triple Convolution TYPE 4 bead ring Reversible Sleeve TYPE 5 bead plate 3/4 BSP AIR INLET SEE INDIVIDUAL DATA PAGE Threads conform to ISO 228-1; gauge to ISO 228-2. •38 mm with 3/4 BSP airfitting. **When using the rolled plate end closure option, add 17.5 mm to heights shown.

AIRSTROKE® ACTUATORS Style Number Minimum Maximum Height Stroke (mm) (mm) 5 BAR Force* at Stroke of 50% of Maximum Maximum Stroke Stroke (kN) IRSTROKE ACTUATORS * To determine Airstroke force at other pressures, divide force shown by 5 BAR and multiply result by new pressure. ** When using the rolled plate end closure option, add 17.5 mm to heights shown. Why use an Airstroke actuator (rather than air or hydraulic cylinder) for actuation? LOW COST Generally, the initial cost of an Airstroke actuator is one-half or less than that of a conventional pneumatic or hydraulic cylinder of the same force...

Airmount Vibration Isolation Chart HERTZ FORCED (DISTURBING) FREQUENCY (ff) Airmount Vibration Isolator Do’s and Don’ts CENTER OF GRAVITY LATERAL RATES AND STABILITY Airmount isolator systems are inherently soft (easily deflected); therefore, precautions must be taken to ensure that the system is stable. First, consider the location of the center of gravity (c.g.). Ideally, the Airmount isolators should be located on the same plane (parallel to the ground) as the center of gravity. Where this is not possible, follow this guideline: The distance between the narrowest mounting points should be...

AIRMOUNT® ISOLATORS Style Number Load (at Natural Design Height) Frequency at 7 BAR (@ 5 BAR) (kg) fn(Hz) Airmount isolator Selection Procedure ® % of Isolation at Forced Frequency 7 Hz Refer to the selection guide on this page for Airmount isolator capabilities. 1. LOAD CAPACITY Select one or two Airmount isolators that can support the load at each mounting point. It is normally best to design for pressures in the 4 to 6 BAR range. Consider only the 1M1A and the single and double convoluted types at first. Please notice that in the range of 1 to 285 kN you will, in most cases, find both a single...

Airstroke actuator Selection Procedure ® Refer to the selection guide on page 4 for Airstroke actuator force and stroke capabilities. This information is intended to give a general guide to part capabilities. Before selecting the correct Airstroke actuator you need to know certain attributes of your application. Once this data is known, the selection is relatively easy. For more detailed information please obtain a copy of Firestone’s Engineering Manual and Design Guide. generally decreases as height increases. If you have less than 5 BAR available, divide the force by 5 BAR and multiply by your...

VIBRATING SCREEN Why use 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 1 Hertz are available. Lower system frequencies can be accomplished by the use of an additional reservoir. In order to achieve similar results from a conventional coil spring isolator, a real deflection of 230 mm would be required. CONSTANT ISOLATION EFFICIENCY Airmount isolators are unique in that the system’s natural frequency does...

Airmount isolator Basics ® A detailed discussion of vibration isolation is beyond the scope of this brochure, but the general theory and terms bear some explanation. In any vibration isolation application, there will be some source of vibration, or disturbance, that generates concern. This disturbance may be coming from the environment. An example would be a coordinate measuring machine in a metal stamping plant whose floor vibrations make delicate measurement impossible. The disturbance may also be generated by a device that affects the surroundings. An example of this could be a vibrating screen...