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As the name implies, it is a device that prevents one object from affecting another. It allows both objects to exist in their natural state without influence from the other. With an isolator, one of the objects is allowed to vibrate without transmitting all of the energy of that vibration to the other object.
For many years, Firestone has been in the business of designing and developing a wide range of mounts and supports to isolate vibrations that are detrimental to many industrial and manufacturing environments. The range of isolators offered by Firestone has been redefined to include two major lines of isolators - Firestone Airmount isolators and Firestone Marsh Mellow springs. Each have their distinct benefits over other typical industrial vibration isolators, and each has advantages over the other. Many industrial vibration isolation problems can be solved using either line, and a complete analysis of potential solutions to these problems should include investigating options using both lines of isolators.
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Large gas and diesel engines are used for many purposes, i.e. trains, ships and for local power generation. In all cases, foundations for these engines must be both economical and effective. Elastic support of this equipment meets these requirements.
During operation, some of the oscillating forces and moments generated by the engine are balanced internally; remaining forces and moments are transmitted into the foundation.
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Pumps may rotate or reciprocate. Rotating pumps are usually well balanced. Nevertheless their elastic support makes sense when these pumps are installed on the upper floor levels inside a building, since in this way vibration and structure borne noise can be avoided.
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Precision machine tools like Roll Grinders, Machining Centres, 3-D Measuring Machines, Microscopes or Test Equipment, located typically in the middle of a plant, are often sensitive to vibrations, excited somewhere in the surroundings.
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The Air Spring Insulator BiAir consists of a cast steel or aluminum housing, within which the air space is contained by thin-walled flexible and pressure-resistant rolling membrane. A piston sits on top of the membrane and is pressed into the air space. This design allows a highly-effective isolation of vibration. In order to simultaneously achieve a high degree of damping, the air space is divided into two chambers connected with an air tube. (load/damping volume) A choke valve can be used to adjust from outside the cross-section of air flowing into the connecting tube from outside according to the degree of damping required. The friction on the flow of air caused by the choke valve can create a damping effect of up to 20%. Damage to the rolling membrane caused by overpressure is prevented by additional safety valves. Air springs are available for greater maximal loads and lower natural frequency. Level control provides an important contribution toward the optimal function of an air spring system. If a change in load likely occurs on equipment mounted with an air spring system, such that compression of one of the springs or an inclination of the equipment will result, a leveling system might be the only solution available. The change in air pressure in the air spring insulators adjusts the height of the individual elements (BiAir or FAEBI). By quickly pressurizing or de-pressurizing the springs, the proper level can be maintained despite variations in the position of the load.
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- Test lab with engine and chassis dynometers
- Computer simulation
- In-house material compound and development capabilities
- High tech solutions provide superior performance:
- Hydro-bushings
- Hydro-mounts
- Rubber-to-metal bonding
- Design expertise matches solution to problem
- Facility location: Milan, OH
- Certifications: ISO 9001
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ELESA vibration-damping levelling elements have been designed to damp vibrations, shocks and noise produced by moving bodies or non-balanced vibrating masses of equipment and machines which can cause:
- malfunction and reduction of the machine lifespan and/or of the adjacent ones
- damages at men’s health
- noise.
LW.A are made up of three main elements: zinc-plated steel base with natural rubber disk, zinc-plated steel levelling disk and threaded stem to allow an easy and precise levelling of the machine.
Vibration-damping levelling elements are available in the following diameters: 80 - 120 - 160 and 200 mm.
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The line is particularly indicated to solve vibration problems. According to the sectors of use Martin gives the possibility to choose the right solutions among plastic, steel or stainless steel component. Applications: injection presses , machine tools, typographic machines, vibrators a.s.o.
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The OSM-Series mount is designed for use on machinery that does not require fastening to the floor and where stringent demands are imposed on effective vibration damping and the reduction of troublesome noise emitted from machinery and equipment.
It has been designed with the aid of FEM analysis, which prevents
fatigue from fast working cycle times and strong lateral forces in heavy machinery.
The reinforced leveling bolt support cup distributes machine loads to
the support points within the mount. The leveling element provides
direct and reliable machine mounting to suit most installation needs.
Vertical as well as horizontal forces are dampened out by
the integral nitrile pad, which also provides chemical resistance
to most fluids.
A tried and tested design with good leveling characteristics
makes the OSM-Series the natural choice for the majority of
machine types used in industry.
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Shock absorbers elastomers with the multidirectional characteristics for the insulation of the shocks and the vibrations.
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2 ranges of shock absorbers for heavy machines:
Hybrid shock absorbers made up of helical springs combined with a viscous damping. Recommended for the important loads and the requests low frequency.
Applications:
Insulation of rotary machines of average and great importance, with a rotation higher than 400 rpm and comprising great dynamic stresses (unbalances, blockings, eccentricities). Generators example, pumps, centrifugal machines and compressors. Insulation of presses of average and great importance with rates higher than 150 blows per minutes.
Entirely metal shock absorbers made up of helical springs and internal cushions in stainless steel wire. Recommended for the important loads and the requests low frequency.
Applications:
Insulation of rotary machines or shocks, with or without basic use d´inertie: ventilators, compressors, generator groups, hammer of forging mill, presses eccentric, insulation passivates large equipment.
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Entirely metal shock absorbers with multidirectional characteristics for the insulation of the shocks and the vibrations.
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- Isolation active and passive
- Isolation equivalent frequency
- Isolation low frequency
- Automatic correction of the level of precision 100 µ m
- Unparalleled Performance
- Small
- Acoustic Performance
- Can operate without air (SLM)
- Excellent stability
- Range includes: materials, mechanical control system with a system with electronic control, tables and work plans.
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MaxDamp®, a highly damped version of our Gimbal Piston™ Air Isolator. MaxDamp® is ideal for OEM equipment with motorized X-Y stages or robots which require high performance vibration isolation and aggressive settling time for stage induced motion of the isolated payload..
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Air spring type SLM
Material elastomer part: CR with steel insert, black
Material base plate: aluminium
Product description: The air springs are based on an elastomer body reinforced with a steel ring. It enables an effective oscillation insulation. The elements are specified primarily of the frequency ratio and dynamic forces.
Execution: Depending on build height and load a natural frequency is reached between 3 and 5 Hz. By increasing or reducing the air pressure, the object can be leveled to the working height H.
Application: They are suitable for passive insulation of scales, gauges etc. also for the active insulation of slow running devices such as ventilators, compressors etc.
Assembly: Adhere to the assembly instructions!
Attention: SLM-elements may only be placed under load and according to type with maximal 4 to 5 bar of pressure. A load on the full surface is permit even w/o pressure. The specified load capacity Fz is valid for the maximum static load.
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The Fabreeka® Precision-Aire™ PLM series pneumatic/elastomeric isolation mounts are low frequency vibration and shock isolators which provide both attenuation of disturbing vibration and equipment leveling.
For vibration control applications, the pneumatic portion of these mounts provides isolation of vibration occurring at frequencies above 5.0 Hz.
For shock or impact applications, the outer elastomeric wall construction provides a high deflection shock mount. A low natural frequency (3.0 Hz) can be maintained by utilizing an external spacer to prevent "bottom out" condition.
Some features and benefits of PLM mounts:
PLM isolation mounts will continue to isolate with no pressure having a vertical natural frequency of approximately 10.0 Hz
The vertical to horizontal natural frequency ratio is approximately 1:1 with a degree of horizontal stability
1/8 NPT female fitting molded into sidewall allows for tank valve or pneumatic fitting
Viscous damping option provides increase in damping for large dynamic inputs.
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Low frequency high performance shock and vibration isolator for passive and active applications
Construction
Moulded CR (Neoprene) oil resistant and non ageing rubber upper chamber with integral aluminium (SLM 1-12) and zinc plated steel (SLM24+) support plate with tapped attachment hole, side wall reinforcement and integral base ring bolted and sealed onto a aluminium (SLM 1-12) and zinc plated steel ( SLM24+) baseplate.
Baseplate can be bolted down to support surface if required. Standard version with Schraeder Inlet Valve.
Other valves on request.
Features
Ratio of vertical to horizontal stiffness ca 1:1
Shock absorption amplitude up to 15mm
Natural Frequency range (depending on load) 2.8-5 Hz (see table).
Deflated (no air pressure): ca 8Hz See Load Spreader Plates LSP.
Applications:
CMMs, Surface Plates, Presses, Test Beds, Turret Punch Presses, HVAC Scientific and Test Equipment.
Levelling Range
+/- 5 (6)mm (see table)
Delivered with Grade 8.8 Zinc plated attachment screw (Other screw lengths available)
Control Systems
Self controlled levelling versions available with either mechanical-pneumatic or electro-pneumatic controllers.
Full proposals on application
Accessories
Load spreader plates LSP, It is important that the foot of the supported equipment covers the SLM fully.
Load spreader plates LSP can inserted between the top of the SLM and the underside of the machine foot if necessary.
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Cushyfoot™ mountings have two rubber elements, used
in shear and compression, to provide excellent stiffness
characteristics for the isolation of a wide range of vibration
frequencies.
There are three sizes, 17-0290 for loads up to 230 kg per
mounting, 17-0213 for loads up to 1250 kg and 17-0346,
which will carry up to 1280 kg per mounting, but will
provide up to 16 mm static defl ection.
The Cushyfoot™ mounting has the following features:
• A wide load range from 50 to 1280 kg.
• Stamped identifi cation plates for product identifi cation.
• Strong castings for safety and reliability.
• Dissimilar horizontal stiffnesses give optimum vibration
isolation and motion control.
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Shock & Antivibration machines feet allowing the following performances:
Insulation of the shocks and vibrations
Integrated levelling
Improve machine stability
Anchoring no require
Load by feet 10 to 10.000 kg
Broad range for all the aplications
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The VIBROSTOP TSGE damper is the best choice for isolating disturbing machines that are not to be fixed to the ground, and do not risk toppling over because of the favourable ratio between height of centre of gravity and base area.
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Fabcel® LeveLers are designed to permit fast, simplified precise leveling of all types of equipment and will compensate for up to a 5° tilt in the mounting surface. Furnished with the patented Fabcel® pad, they control shock, vibration and noise and will not allow equipment to creep or walk.
Model SW and SWB Swivel-type LeveLers compensate up to 10° tilt each side of the centerline in order to adjust for uneven bearing surfaces. The base of the Swivel LeveLer is designed to assure solid support. The Swivel LeveLer is zinc plated and gold iridited to resist rust. Model SWB is furnished with a 2" long adjusting bolt. The Swivel-type LeveLers can be furnished with the patented Fabcel® pad to control shock, vibration and noise and will not allow equipment to creep or walk.
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The TF mounting is installed in minutes by following the
instructions provided. There is no need to fi x the machines
to the fl oor since the rubber base of the mounting keeps
the machine in place. Whenever necessary, the machine
can easily be re-positioned. The level is adjusted with load
applied.
The rubber element of the TF mounting is oil and chemical
resistant. All metal parts are zincplated and chromated
for protection against corrosion.
Models TF 250, TF 600 and TF 1200, also available in
S/S (ISO 2604/11, BS 3605:1).
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Isomounts provide an efficient and economic method of installation of a wide range of machinery and equipment. Machines can be installed and accurately levelled without bolting down or grouting. Machine performance is improved through effective shock and vibration isolation and damping.
Typical applications include:
- Compressors and Pump Sets
- Diecasting machines
- Diesel Generators
- Hydraulic Power Packs
- Injection Moulding Machines
- Packaging Machinery
- Presses: Forging, Hydraulic and Mechanical
- Rubber Machinery
- Testing Machines
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Rails elastic
Shocks multi-directional
Supports engines
Supports big race engines
Fixing muffling
Washers
Supports soles
Supports universal
Montage sécuritif
Specific development
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ROSTA Anti-vibration Mounting Type ESL
ROSTA Anti-vibration Mounting Type V
ROSTA Anti-vibration Mounting Type N and NOX
ROSTA Anti-vibration Mounting Type ISOCOL / ISOCOL U
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The AA series has been designed for loads from 10 to 6000 daN. One of its most important feature is the multidirectional reaction which guarantees an optimal response along all directions. Its high safety level prevents the detachment of the appliances even if the elastomers should be completely destroyed. It can be fixed either with two or four bolts.
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RA™ Shielded Cup Mount
Effective vibration isolation for different types of machines with rotating movements.
Compressors
Pumps
Generators
Engines
The RA™ Mount loads the rubber profile in shear and compression obtaining good vertical flexibility with the advantage of horizontal stability. For even better isolation, the alternative RAEM™ or M™ can be chosen.
Its unique construction and the latest production methods make the RA™ Mount a high performance mount with the following advantages:
- Rubber features are utilized effectively combining compression and shear
- Tight tolerances on dynamic stiffness rate for accurate vibration calculations
- Wide load rating options
- Corrosion protected to cope with arduous environments
- Strong base material withstands loads without deformation
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EH™
Type EH™ mountings produced in natural rubber and neoprene are designed to achieve effective vibration isolation on engines, operator cabins other ancillary units.
Typical applications are, Off-highway equipment, Military vehicles, Transport machinery, Industrial mobile machinery.
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WM Berg carries a full line product that provides precision leveling for lightweight and heavy machinery.
These products are widely recognized for excellent vibration and shock absorption characteristics.
The material's unique properties make it ideal for applications involving heavy machinery that require both shock absorption and vibration isolation.
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Vibration Damping Machine Mounts featuring:
- High Load Capacity
- Precision fine screw thread height adjustment
- Excellent vertical and horizontal shock and vibration isolation performance
- Loadings per mount up to 25 tonnes
- Predictable performance
- Machine installation without bolting down
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