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The intelligent damper - due to ER-technology (ERF)
The Bansbach easyERF dampers are extremely quick and
efficient dampers with a broad application field. Its innovation
potential is the electronically adjustable damping intensity
and the reaction time within milliseconds. Advantages of the
damper: no wear and tear, maintenance-free, high reliability.
The technology:
In the electrical field, the electrorheological fluid changes its consistency from thick to thin within milliseconds. According to the ERF-technology, the dampers adapt very quickly to changing system requirements, using as little energy as possible. An electrical signal determines the damper forces which can thus be optimally adapted to operating excitation forces. The damping force can consequently be adjusted within the characteristic field - quick, at any time, noiceless - and only by the use of a simple electronic interface.
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Dashpot damping applications fall into one of the following generic categories: Velocity Control of Solenoids, Spring Loaded Mechanisms, Falling Mass, Creating Time Delay, Vibration Damping, Valve Damping, Limiting Overaction, or Cushioning Impact. At rest, the dashpot is a passive device and has no force output. In motion, the dashpot offers a resisting force which rises to equal the force of the input load, achieving a zero net force. This results in zero acceleration and constant velocity. Force limits of Airpot dashpots are determined by the direction of damping and the diameter of the piston. In pull damping units, a vacuum is being created in the dashpot as the piston moves outward. Thus, the maximum resisting force limit of the unit is a direct function of atmospheric pressure and the area of the piston (F=PA) Assuming an equal ambient pressure, larger diameter units will have force limits higher than smaller diameter units; the limits being directly proportional to their piston areas. In the push damping (compression) direction, air must be compressed into an ever decreasing space; the force can rise to a level which is higher than is possible in the pull damping direction. Precision Dashpots from Airpot are available in standard or custom designed configurations, depending on your application. Airpot dashpots unique combination of materials, combined with the precision of the parts and their close fits, provides ultra low friction, immediate response and long life without seals or lubricants, even under extreme temperatures, high speed operation, or long periods of non-use.
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A Marsh Mellow spring is a fabric reinforced rubber cylinder. A main advantage of a Marsh Mellow spring over an air spring in isolation applications is a Marsh Mellow spring does not require air.
Marsh Mellow is a trade name of the rubber and fabric spring developed by Firestone Industrial Products in the early 1970's. Rubber springs have long time been a subject of interest in the vehicular suspension and industrial application fields because of their reliability, corrosion resistance, low cost, and basic simplicity. The concept has been tried with varying degrees of success over the years. The major obstacle to solid rubber springs has been that to obtain the load requirements for many applications, solid rubber springs were either physically too large, or became unstable laterally when they were made long enough to provide good isolation. The concept of "stacking" rubber springs answered the latter problem, but introduced the need for complicated mechanical guide systems to control the lateral movement.
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Dashpot damping applications fall into one of the following generic categories: Velocity Control of Solenoids, Spring Loaded Mechanisms, Falling Mass, Creating Time Delay, Vibration Damping, Valve Damping, Limiting Overaction, or Cushioning Impact. At rest, the dashpot is a passive device and has no force output. In motion, the dashpot offers a resisting force which rises to equal the force of the input load, achieving a zero net force. This results in zero acceleration and constant velocity. Force limits of Airpot dashpots are determined by the direction of damping and the diameter of the piston. In pull damping units, a vacuum is being created in the dashpot as the piston moves outward. Thus, the maximum resisting force limit of the unit is a direct function of atmospheric pressure and the area of the piston (F=PA) Assuming an equal ambient pressure, larger diameter units will have force limits higher than smaller diameter units; the limits being directly proportional to their piston areas. In the push damping (compression) direction, air must be compressed into an ever decreasing space; the force can rise to a level which is higher than is possible in the pull damping direction. Precision Dashpots from Airpot are available in standard or custom designed configurations, depending on your application. Airpot dashpots unique combination of materials, combined with the precision of the parts and their close fits, provides ultra low friction, immediate response and long life without seals or lubricants, even under extreme temperatures, high speed operation, or long periods of non-use.
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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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CYLINDRICAL SHOCK ABSORBERS
The high quality of BARBIERI RUBBER's shock absorbers come from 35 years of experience and improvements, moreover BARBIERI RUBBER A propose price very competitive because of the industrialization reached.
Since many years our shock absorbers are used in high stress applications as air compressors and motor bike
Our engineer Barbieri, son of the chair man, has achieved the engineer specialization on Rliability at the Cardiff University (UK) and is available to analyze and study for you and with yours technicians the application, this in order to find the correct parameters: Fp, K, D and h that will determine the right choice of the shock absorber.
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STAB-O-SHOC
Function of a Damper
The damper is a hydraulic damping element and consists of a pressure tube with a connection fitting, a piston rod with piston system and a piston rod connection fitting. The piston rod is mounted in a special seal-guide system in the pressure tube. The piston rod in the pressure tube features a damping piston and the related valve system. The movement of the piston displaces the filling medium (oil), which is pressed through the valve system and thus produces the damping force.
Dampers are needed to influence the nature of movements and vibrations. Dampers are designed to optimally match the particular application.
Vibration dampening for steering systems, engines, automatic trailer brakes, washing machines, seats, two-wheelers and other applications.
Vibration damper with separating piston for positionally independent installation. Available with an internal valve for compensation of high compression forces. Frequency-dependent dampers for dampening only selected areas of vibration.
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- High load Capacity
- Weak residual deformation
- Excellent behaviour with abrasion
- Broad beach of use at the temperature
- Resists radiations - Great choice of hardness
- Lifespan raised taking into consideration other material
- Excellent behaviour with the notch, the impact and tearing
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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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Damping Engineering
EDH and ZDH final dampers
Used to slow travel speeds before reaching the final position. An extensive
range of sizes in both single and bi-directional configurations is available with variable damping.
High-Performance dampers
These dampers will slow heavy fast moving objects in a short distance - used mainly in machine manufacture.
Oil dampers with fixings on both ends
These dampers are attached to the object at both ends by eyelets or other end fittings and provide constant damping throughout their stroke. These dampers are available preset or with variable damping force.
The oil dampers are manufactured custom-made, in single units as well as large batches. The Dictator engineering service calculates the oil damper you need, this calculation being included in our service.
Radial dampers
These variable force dampers provide constant speed control for heavy objects over long travel distances and are particularly suitable to control sliding doors.
DICTATOR engineers calculate the correct damper for your application.
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Under normal circumstances, Hydraulic Shock Absorbers allow free movements of the bridge structure. Under shock impact, e.g. due to earthquakes, high braking loads or strong winds, they function temporarily as elastic damping connections.
Hydraulic Shock Absorbers can be used in all situations where horizontal loads, due to earthquakes, strong braking etc., must be through the structure.
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A supplementary range of cylindrical mountings for a wide range of applications. They can be loaded either in compression or shear taking into consideration individual demands for actual applications.
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Versatile vibration isolator as the last resort:
1. Low frequency and micro vibration in particular:
Alpha gel vibration isolators cover a wide range of loads from 0.2kg to 300kg. Alpha gel isolators excel in dampening low frequency/micro vibrations & noise in particular, usually not eliminated by other materials such as rubber. That is why they were brought to space in the Space Shuttle. They are proven to work nicely for over 2 decades on the globe too...
2. Alpha gel brand:
Alpha gel is the umbrella brand for the patented, multifunctional silicone gel from Taica Corp (formerly Geltec) in Japan. For over 20 years, its softness has established unique and distinct position in vibration isolation, shock absorption, thermal conductivity, and a comfortable feel in ways traditional solutions have fallen short.
(a) Wide operating temperature:-40 to 200 C (-40 to 392 F)
(b) Low compression set (not much deformed over time)
(c) Long-term durability
(d) Friendly to the environment and sustainable even in severe environments
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The VIBROSTOP METALFLEX is a most widely appreciated damper, due to its versatility and its wide range of available sizes: it's fit for applications where the elastic bond must be of reduced size, while able to resist to compression, shear and torsion.
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LASTO ISOBLOCK reduces vibrations from train and road traffic. The parallel swinging masses and the stiffness of the bearings lead to a lower frequency of the object than the interfering frequency, which provides an ideal insulation effect.
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Heat Shield Isolators & Vibration Dampeners
ACS Industries, Inc.’s patent pending single-rivet heat shield isolator and production process are revolutionizing isolating and vibration dampening technology. A significant improvement over existing assemblies, this innovative design eliminates multiple-piece constructions and the costly assembly process that accompanies them.
Based on existing heat shield isolator and vibration dampener technology, our single-rivet isolators function similarly to other such elements. By reducing resident frequencies the materials they support, they reduce the noise these waves produce. Manufactured from wire types specifically matched to operating requirements, these compressed mesh elements can be engineered to survive hostile environmental factors such as temperature extremes or corrosive agents.
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As a result of its interlocking loop construction-which couples resiliency with high damping characteristics and nonlinear spring rates-Metex knitted wire mesh offers unique properties for absorbing shock and vibration. Each loop acts as a small spring when subjected to compressive loads, and will immediately resume 90% of its original shape when the load is removed.
Knitted wire mesh can be used to provide mechanical support for the monolith element used in an exhaust system's catalytic converter. The wire mesh is used to support the monolith, compensate for the wide range of thermal expansion rates and protect the fragile ceramic honeycomb from the mechanical shocks associated with various driving conditions.
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Motion Control/Bumpers/Feet
Richco’s range of rotary and axis dampers provide the white goods, audio & video entertainment, automotive and general electronics industries with a solution to dampening and providing controlled movement to give added value and functionality to the end user. Richco’s rotary and axis dampers are available in different torques and mounting methods such as screw or snap-in mount.
Richco also provides door latches that act as a ‘push/pull’ locking and unlocking device enabling the door/compartment of your application to be securely closed and opened. Our door latch range also consists of a spring-assisted version.
Richco also supplies a number of molded rubber bumpers and rivet-fastened push-on feet for dampening or for taking light shock absorption on moving parts. Richco’s bumpers and feet also secure and resist movement of your application when it is at rest. They also prevent surface damage with their anti-skid, scratch and stain/mark resistance properties. Richco’s bumpers and feet come in different shapes, sizes, colours, hardness ratings and materials. If you cannot find a specific product in this section or require further technical details, please contact your local Richco office.
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Versatile vibration isolator as the last resort
1. Low frequency and micro vibration in particular:
Alpha gel vibration isolators cover a wide range of loads from 0.2kg to 300kg. Alpha gel isolators excel in dampening low frequency/micro vibrations & noise in particular, usually not eliminated by other materials such as rubber. That is why they were brought to space in the Space Shuttle. They are proven to work nicely for over 2 decades on the globe too...
2. Alpha gel brand:
Alpha gel is the umbrella brand for the patented, multifunctional silicone gel from Taica Corp (formerly Geltec) in Japan. For over 20 years, its softness has established unique and distinct position in vibration isolation, shock absorption, thermal conductivity, and a comfortable feel in ways traditional solutions have fallen short.
(a) Wide operating temperature:-40 to 200 C (-40 to 392 F)
(b) Low compression set (not much deformed over time)
(c) Long-term durability
(d) Friendly to the environment and sustainable even in severe
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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, s.l. introduces a new range of dampers in stainless steel. The characteristics of these mounts are similar to the ones in normal steel but the applications are not the same as they are mainly used in chemical industry, pharmaceutical industry or food and beverage industry.
The range of these products includes the Egaña series of dampers of type T and HD and some machine mounts too.
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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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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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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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Alpha GEL tape, chip, and form.
thickness 1-10mm
Alpha GEL's softness and high performance have often helped to protect from shock and vibration, senstive devices in electronics such as hard disc.
1) Alpha GEL tape/chip
* Simply cut (tape) or remove (chip) from the liner with adhesive one one side.
* Wide selection to choose from based on width and thickness.
* Very easy and effective solution for shock absorption and vibration damping
where no space is allowed for insulators or bushes.
* Wide temperature range from -40C (104F) to 100C (212F).
2) Alpha GEL NP foam (not in the picture)
* Lightweight and highly durable foam type Alpha GEL.
* Low compression set, highly flame retardant, resistant to weather and ozone.
* Operable from -40C (104F) to 200C (392F)and sustainable over a long haul.
* http://www.geltec.co.jp/english//product/pro_05.htm.
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Dampeners
Dampening - Absorbing shock - Protecting
Musthane dampeners are designed to absorb violent shocks. They are made of a composite matrix positioned in a highly resistant and flexible skin. They are reusable, easily set-up and compact.
They can also be an excellent means to absorb vibrations.
The Mustshock range offers low, medium and high pressure dampeners, with an innovative technique which is protected by a joint patent with the THALES group.
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Range of movement and vibration dampeners enriched at Norelem
Family 26000 of Norelem gathers a whole range of new vibration dampeners and movements dedicated to the pneumatic applications.
References 26100,26110 and 26115 are elastomer shock absorbers tolerating of the temperatures of -30° with +50°; they absorb the shocks and their different forms conical, cylindrical, in warhead adapt to any type of construction of special machines, for which they are particularly advised. Norelem also proposes under reference 26300 of the hydraulic dampers. Loan to be gone up and not requiring any maintenance, they resist temperatures of -5° with +70°. Their threaded body allows a precise adjustment of damping. Available of M8 to m2.
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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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