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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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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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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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Based on decades of experience in design and application of VISCODAMPERS® for vibration control of machinery and other industrial equipment, GERB has developed Pipework dampers for the protection of piping systems.
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This series of bobbin mounts are one of the most commonly used in general industry. All the models can be loaded in compression and shear, or a combination of compression and shear (never traction) for protection from severe vibrations, shock and noises.
They atre made of two parallel metal plates bonded to a cylinder or diabolic shaped rubber inset. We can manufacture them in STAINLESS for Food Industry, Chemical, Pharmaceutical...
Wide range of different dimensions in 5 cylindrical formats:
T Series, H Series, TH Series, TS Series and HS Series.
Wide range in 2 Diabolo formats:
TD Series and HD Series.
Progressive stops TP and HP are available too in several formats.
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Talleres Egaña is still improving by innovation and research. That can explain the appearing of new products and materials such as polyurethane, which is a complementary element to rubber and brings a new conception to the antivibration market.
The wide range of Egaña products is increasing step by step and their products are used in Machinery (lathes, presses, plastic injectors, shears, guillotines...), Compressors, Groups, Air conditionning and in many other sectors of Industry in general.
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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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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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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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STENFLEX rubber-metal elements are used as absorber elements on machinery, measuring instruments, motors, pumps and industrial equipment. They have anti-vibration and anti-noise properties, which effectively isolate acoustic emissions.
Functions at a glance:
- bearing for absorbing shock and impact vibration
- impact absorbing element
- soft absorption of impact and acceleration forces
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Spring Elements for Vibration Isolation
ContiTech Air Spring Systems offer solutions for vibration-oriented mounting of machines. From the technical design all the way through to the harmonization of individual system components.
ContiTech air springs make very low natural frequencies possible, from 0.5 to 3.5 Hz depending on the type.With loads ranging from 0.5 kN to more than 440 kN, ContiTech air isolators provide effective mounts for sensitive measuring instruments as well as heavy foundations.
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Hydraulic railway dampers
Dellner Dampers AB has developed 3 dampertypes for Railway applications
1. Railway damper 45 series (cylindertube diameter 45 mm) suitable for light rail and metro applications with a maximun force of 12 kN.
2. Railway damper 62 series (cylindertube diameter 62 mm) suitable for primary, vertical, lateral, yaw and intercar damper with a maximum damping force of 15 kN.
3. Railway damper 80 series (cylindertube diameter 80 mm) suitable for yaw and intercar dampers with a maximum force of 50 kN.
Horizontal damper with membrane
With an internal membrane that separates oil and gas, the Dellner damper can be mounted horizontally and work even under negative angles.
Type of mounts
The Dellner damper can be fitted with various types of mounts, i.e. spherical rubber bushings and steel-teflon ball bearings.
Hydraulic buffers
Dellner Dampers AB has developed 3 hydraulic buffers types for Railway applications.
1. Hydraulic Buffer type 100 series with a maximum force of 100 kN
2. Hydraulic Buffer type 400 series with a maximum force of 400 kN
3. Hydraulic Buffer type 800 series with a maximum force of 800 kN
All our hydraulic dampers and hydraulic buffers are made according to the specification of the customer.
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Airpot products offer the following benefits over other pneumatic piston /cylinder based motion control devices:
• They have unparalleled low friction, responding to forces as low as only a few grams and pressures less than 0.2 psi.
• Starting and running friction are almost identical, preventing jerky, uncontrolled starts and providing uniform smoothness throughout the full stroke of the device.
• They are unaffected by extreme temperature variations
• They run clean and do not contaminate surrounding components.
• No seals are required, and there are no liquids to leak.
• They are made of self-lubricating materials.
• They can withstand exceedingly high cycle rates. They do not heat up or change viscosity under conditions of rapid and/or continuous cycling
• They have a life-span of multi-millions of cycles. They will commonly outlast the machines in which they are used.
• The piston and cylinder will not rust, corrode, or deteriorate over time, even with little or no use over extended intervals.
• They are precise and accurate
• They can be customized easily to suit special space, mounting, and performance requirements
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Sunnex SP Series Damping Pads
Sunnex SP-Series machine pads are used in many areas of industry to insulate machinery against the adverse effects of impact, vibration, structure borne noise, or simply to prevent slipping.
Advantages:
Easily designed to meet thickness and shape requirements
High resistance to grease, acid, oil, and cooling emulsions
Significantly reduces vibration
Easily sized for different configurations
Unique cell design offsets pad deflection
Applications:
Engines
Motors
Pumps
Compressors
Generators
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AirLoc pads are designed to be homogeneous and are suited for a wide range of applications. 99% of all problems with vibrations, structure-borne sound and machine installation can be solved with the AirLoc system, which features:
a high degree of isolation efficiency
high damping and load-bearing capacity
level stability
a high coefficient of friction
homogeneous materials
high strength and good aging characteristics
BiLoc pads with unique profiles were specifically developed for low-frequency applications. They feature:
low natural frequencies
high coefficient of friction
long life
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While hot forming machine tools (hammers, screw presses) use high kinetic energy for the metal forming, where part of this energy is dissipated into the ground causing there rather high vibration levels, however, in case of the cold forming process it is the sudden release of the stresses - built up in the press frame during the pressing operation - when cutting through the material (blanking).
In both cases GERB can provide special Spring-Viscodamper® combinations, which allow today direct spring support of the equipment whereas in the past quite massive foundations were necessary.
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Smaller than traditional wire rope isolators, these unique isolators provide unsurpassed multi-axis shock / vibration isolation with maximum reliability where sway space is a premium. Compact WRI are unaffected by temperature extremes and chemical exposure. Featuring a patented crimping pattern, they are ideal for lightweight applications such as disk drives, sensitive mobile electronics, medical equipment, and small pumps / motors.
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GMT-Conical suspension-springs are used, among other things, in body manifacturing for the bedding and suspetion of the engine in the chassis frame. Being vibration insulators and dampers, cone-springs allow for relatively considerable spring excursion and have a progressive chracteristic curve.Buffers also help to absorb shock loads without causing irreparable damage to the part. If different degrees of stiffness are required in X and Y directions, uses elements with slots
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The VIBROSTOP AAT damper is recommended for isolation of piping and ducting of walls and ceilings, ideal for supporting tie-bars and conduits vibration-free.
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Earthquake protection shock absorbers
No matter what type of structure, bridge or viaduct, Jarret has created shock absorbers which dissipate a large part of the kinetic energy.
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Properties:
- Flexible mountings are components which exhibit both flexibility and damping, at the same time and to varying degrees.
- Flexibility is the ability of the mounting to deform and recover, with an amplitude approximately proportional to the load.
- Damping is a braking force the most important effect of which is the reduction of oscillations.
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Suspension Spring
The Suspension springs are designed to provide a maintenance free flexible load bearing component allowing angular and shear movement whilst transmitting high axial loads. There is also a built in fail-safe device to prevent total mount failure in the case of severe overload.
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The main typical characteristics of the JARRET friction damper are :
Low sensitivity of the friction force at the working temperature (-200°C / + 200°C)
Low sensitivity at the working velocity (F " C*V a, a"0.2 at RT and a"0.01 at -196°C)
Capability to work under very short stroke (from some hundredths mm)
Width frequency range, from 0 to a few hundred Hz,
Capability to work under high working velocity (up to 100 m/s)
No pressure, no risk of explosion due to a high pressure
No fluid, no risk of leakage
Low mass
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Advantages:
- Stability: Steel mounting provide stable characteristics and the height under load remains constant with time
- Unaffected by corrosion. Steel dampers are unaffected by oil, grease, solvents, adverse weather and corrosives products.
- Unaffected by temperature. Steel dampers withstand temperatures from - 70°C to 300°C without changing characteristics.
- Low natural frenquency. Steel mounting with springs can have natural frequencies as low as 3 Hz, which can provide up to 98% attenuation for low speed rotating machinery.
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Compactor Shearmount™
Metalastic Compactor™ shearmount for high compression loads whith low shear stiffness are suitable as suspension for Compactors and other off-highway vehicles. Can be loaded in compression or shear and the design allows a large difference between the compression and shear stiffness, thus providing the potential to tune a mounting system by rotating the mountings.
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Machines generate vibrations which are transmitted to the surroundings.
They can influence the manufacturing process of other machines and thereby the quality of the products.
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UNISORB® Vibration Isolation Pad Materials
Reduced vibration contributes to more efficient operation and longer life of costly machinery. UNISORB's job engineered isolation pads substantially reduce vibration and noise transmission. Installations are fast, easy and inexpensive.
Harmful effects of vibration and noise may cause serious impairment to the efficiency of workers and the overall effectiveness of production machinery. Proper use of these products will:
- Improve the efficiency of production equipment
- Provide a safer, more desirable environment for workers
- Reduce down time and extend the operating life of machinery
- Prevent floor damage
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Comprised of stainless steel cable threaded through aluminum alloy retaining bars, these helical isolator products ensure effective vibration isolation. Enidine Wire Rope Isolators are environmentally stable, high-performance shock and vibration isolators that are unaffected by temperature extremes, chemical attack, oils, ozone and abrasives. They are ideally suited for electronic cabinets, shipping cases, as well as pump, generator and compressor isolation.
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