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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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- 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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Elastomers EFFBE are specific mixtures to make it possible the springs to ensure a longevity without equal. 3 hardnesses Diamètre 16 to 160 mm Forces of 5 A 14.000 daN Course from 1 to 65 mm
Resist oils, greases, ozone, UV etc ..........
And the shocks deaden soundproof
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Standard Parts / F - Springs / Elastomer Springs
We offer a wide range of elastomer springs, spring shape elements, ejectors and scrapers made of polyurethane rubber. Under the column "elastomers", you can convince yourself that FIBROFLEX® elastomer springs cannot only be used as pure spring elements but also as forming elements.
During continuous loads, elastomers loose some of their abilitiy to regain the original shape. Over time, deformation residue occures, i. e. the elastomer settles. Depending on the spring displacement utilisation, the tendency towards initial sagging relating to the original spring height amounts to 8 - 10 %.
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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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Features:
A flexible bush has an elastomeric element enclosed between an outer sleeve and a centre axis intended to replace a greased bush.
The improvements achieved in industry due to the use of elastic bushes have been justly compared to the progress achieved in the past by the use of ball joints. In fact, theimprovements achieved by the latter by reducing friction and play considerably and reducing wear an noise,
have been taken even further by elastomeric rubber bushes which eliminate play completely and isolate high frequency vibrations.
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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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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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ROSTA Oscillating Mounting Type AU
ROSTA Oscillating Mounting Type AR
ROSTA Rocker Suspension Type AS-P
ROSTA Rocker Suspension Type AS-C
ROSTA Double Suspension Type AD-P
ROSTA Double Suspension Type AD-C
ROSTA Rubber Suspension Unit Type DO-A
ROSTA Oscillating Drive Head Type ST
ROSTA Oscillating Mounting Type AB
ROSTA Oscillating Mounting Type AB TWIN
ROSTA Oscillating Mounting Type AB-D
ROSTA Universal Spring Rockers Type AU-DO
ROSTA Universal Joint Type AK
ROSTA Oscillating Mounting Type AV
ROSTA Oscillating Mounting Type AB-HD 50-2
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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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ROSTA Rubber Suspension Unit Type DR-S
ROSTA Rubber Suspension Unit Type DR-A
ROSTA Rubber Suspension Unit Type DR-C
ROSTA Rubber Suspension Unit Type DK-S
ROSTA Rubber Suspension Unit Type DK-A
ROSTA Rubber Suspension Unit Type DO-S
ROSTA Rubber Suspension Unit Type DO-A
ROSTA Rubber Suspension Unit Type DW-A 15-38
ROSTA Rubber Suspension Unit Type DW-A 45-100
ROSTA Rubber Suspension Unit Type DW-C 15-38
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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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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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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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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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SLAB damping plates of the SL-030, SL-100 and SL-300 series are viscoelastic PUR materials that are manufactured according to a patented
formula and which were especially designed to absorb shock loads.
At the same time, the resulting structure-borne noise is effectively reduced.
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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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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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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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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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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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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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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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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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Other dampers
