Reference Articles 1 - 41 of 41
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LP-13 Shake Absorber® Improves HVAC Roof Curb Vibration Isolation
Description: Tired of poorly or non specified vibration isolation control for HVAC UNITS? ...
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Remediation of Mechanical Vibration to Roof Curbs (.pdf)
Description: In today's economy, indicators are that co-called value added engineering may be (in part) responsible for some of these noise and vibration complaints from Contractors, owners and builders. The drive ...
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Quieting Impact and Vibration (.pdf)
Description: Spring technology for dampening is relatively old. Stagecoaches had leaf springs, early trains had large, crude, coil-spring buffers (to absorb shocks when cars bumped together) and early automobiles ...
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Gas Spring Technical Info: Damping
Description: Damping is achieved regulating the flow of gas and/or fluid through the valved orificing of the gas damper piston. Commonly used compression gas springs when mounted in a rod down orientation achieve ...
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Gas Spring Technical Info: Do's and Don'ts
Description: Use standard gas springs rod down, i.e. the spring should be mounted so that it spends most time in a rod down position, within 60° of vertical, thus ensuring the seal stays lubricated. For tension ...
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Gas Spring Technical Info: Force
Description: Gas Spring force is normally designated as P1 which is the force measured .2" (5 mm) from full extension in the extending direction. Force is a function of the charge pressure in the cylinder acting ...
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Gas Spring Technical Info: Friction / Hysteresis
Description: Gas springs are high friction devices. Users will notice a spike in the force required to first compress a gas spring compared to the rated P1 force of the spring. If tested on a common weight scale, ...
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Gas Spring Technical Info: Gas Spring Mounting (Horizontal Use)
Description: All gas springs contain a small amount of oil to lubricate the main seal and rod and provide end of stroke damping (see damping). If standard gas springs are operated and mounted in a rod up ...
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Gas Spring Technical Info: How It Works
Description: A gas filled spring consists of a precision rod attached to a piston moving within a sealed cylinder containing nitrogen at high pressure. Output forces are the result of the differential between the ...
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Gas Spring Technical Info: K-Factor
Description: As governed by Boyle's Law, P2 force is always greater than P1 force. During spring compression, the volume of rod introduced into the cylinder displaces an equal volume of gas, increasing the ...
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Gas Spring Technical Info: Modified K-Factors
Description: The design of a gas spring can be modified to support applications requiring lower and higher K factors. Low K factors where the extended and compressed forces are almost equal are desirable on ...
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Gas Spring Technical Info: Release Valves
Description: All IGS springs, with the exception of the micro gas springs, are available with release valves (RV). RV gas springs are fitted with an internal aerospace quality valve located under the removable ...
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Gas Spring Technical Info: Seals / Temperature Ranges
Description: The following chart gives the operating and survival temperature ranges for gas springs manufactured with standard, low temperature and high temperature seals. RV refers to "release valve" which is a ...
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How to Adjust the Force of a Gas Spring
Description: Once a gas spring has left the IGS factory, the only way to adjust its force is by removing some of the nitrogen gas contained inside the tube. Therefore the only possible adjustment will always lead ...
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How to Adjust the Force on a Gas Spring with a Schrader Valve (RV)
Description: The procedure to adjust the force on a gas spring with a shrader release valve (RV) is similar to a T-Valve (TV). However, because the valve is more fragile you can only release gas using the tool ...
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How to Adjust the Force on a Gas Spring with an IGS Side Release Valve
Description: The IGS Side Release Valve can be found on the Euroline range of gas springs. It can also be found on custom made gas springs where a SRV was specified. The advantage of this type of release is that ...
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Hinge Design Guidelines
From: H.A. Guden Co., Inc.Description: Keep these factors in mind for optimal performance at an economical cost: Select a standard product from our catalog. We have over 600 in-stock items from which to choose. For most items (up to .074 ...
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Vibration & Shock Isolation: Complex Driving Forces (.pdf)
Description: When the disturbing forces are neither sinusoidal nor suddenly applied, the vibration analysis becomes more complicated. While it is more difficult to give general guidelines or methods of analysis, ...
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Vibration Isolators: Design Problem Examples (.pdf)
Description: The following are a number of problems intended to familiarize the reader with the basic applications of vibration isolators. More advanced techniques which would result in stiffer isolators while ...
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Test Data for Kellett Enterprises Closed Cell Foam 3/8 (.pdf)
Description: Procedure: Two specimens were prepared from the submitted sample by mounting a 2"x2" section on a steel plate. Each specimen was pulled at 6 in/min. across a section of tile provided by the customer. ...
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Test Data for Kellett Enterprises LP-13 Lite Vibration Isolation 1/4 (.pdf)
Description: Procedure: Each specimen was stabilized at test temperature for at least 24 hours prior to being mounted on the MTS machine for testing. The actuator was positioned, the load and displacement were ...
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Test Data for Kellett Enterprises LP-13 Vibration Isolation 3/8" 50 Duro (.pdf)
Description: Procedure: Each specimen was stabilized at test temperature for at least 24 hours prior to being mounted on the MTS machine for testing. The actuator was positioned, the load and displacement were ...
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How to Handle a 37,000 Pound Vibration Problem (.pdf)
Description: New Zealand based Transfield Worley engineering and construction company recently approached Kellett Enterprises with a heavy vibration problem, really heavy. But like all of Kellett's customers over ...
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Vital Hospital Computers Protected by Kellett Enterprises (.pdf)
Description: When one of Kellett Enterprises' latest customers prepared for a 110,000 square foot addition to their hospital, they faced significant vibration issues that could have potentially impacted the ...
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Vibration Pads for Commercial Bakery Equipment (.pdf)
Description: When commercial baking equipment reseller, Production Line Equipment, added Kellett Enterprises,' LP-13 Shake Absorber® Vibration Pad, to their product line up, we wanted to spread the word like ...
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Vibration Pads for Weaving Machines in Textile Industry (.pdf)
Description: Even the best machines and equipment can fall victim to the problems that come with excessive vibration and noise. That's because, over time, vibration causes significant problems in the areas of ...
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Vibration Pads used on HVAC Heat Pumps For A New Multi-Use Condo (.pdf)
Description: Imagine coming home to your new downtown luxury condominium, ready to unwind from a hectic day, only to hear and feel distant vibrations seemingly coming from the rooftop. This was the recent scenario ...
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What is Vibration Welding?
Description: Linear vibration welding physically moves one of two parts horizontally under pressure, creating heat through surface friction that melts and welds the parts together. Compared to ultrasonic welding, ...
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Choosing the Right Rod End - A Discussion
From: Airpot CorporationDescription: Mounting configurations. Choosing the right rod end can greatly facilitate mounting as well as avoid friction and wear in the mechanism being damped. Standard choices are: plain end, loop or rod eye ...
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Energy - The Main Consideration for a Shock Absorber
From: Airpot CorporationDescription: The main consideration for shock absorber configurations. Kinetic energy dictates the size requirement when the Airpot unit is to be used in the shock absorber (snubber) configuration. Maximum energy ...
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Force is the Primary Consideration for Dashpot Configurations and All Applications Involving Vibration, Time Delay, and Velocity Control
From: Airpot CorporationDescription: Limits based on damping direction. Force always relates to the net load which is pushing or pulling on the dashpot. Typically, force will dictate the unit's size when the Airpot is used in the dashpot ...
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Better, Not Bigger, Shock Absorbers
From: ACE Controls Inc.Description: Designers at ACE Controls Inc., Farmington, Mich., had their work cut out for them - design an industrial shock absorber with a larger-bore piston to absorb more energy, but keep the unit size the ...
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Cushioning Without Cushions
From: ACE Controls Inc.Description: Adjusting the standard cushions on today's air cylinders isn't rocket science, but it's something many people don't completely understand. That's one reason why Hydraulics & Pneumatics published a ...
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Genesis of a Hydraulic Shock Absorber
From: ACE Controls Inc.Description: Hydraulic shock absorbers decelerate loads by converting their kinetic energy into heat, then dissipating that heat into the atmosphere. Typically, a load contacts and strokes a piston to displace oil ...
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Great Weight, Less Filling
From: ACE Controls Inc.Description: Imagine being told to redesign your company's mainstay product, improve its performance by 50%, and constrain its size. If that sounds nearly impossible to you, then you're not alone. Engineers f4rom ...
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Miniature Shock Absorbers Decelerate Big Loads at Low Speeds
From: ACE Controls Inc.Description: A line of miniature shock absorbers decelerates heavy loads moving at low velocities, offering increased energy per cycle. The SC2 Heavyweight II Series from ACE Controls Inc., Farmington Hills, ...
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Passenger Safety is King on Thrill Ride
From: ACE Controls Inc.Description: The Turbo Drop thrill ride lifts 12 passengers, seated on the outside of an octagonal metal cage, straight up to 180 ft. above the ground, holds them there for a moment, and then drops them - actually ...
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Reinventing the Industrial Shock Absorber
From: ACE Controls Inc.Description: Adjustable shock absorbers are widely used because they provide an economical way to decelerate loads, prevent impact damage, dampen noise, and increase equipment speeds. They're also simple to apply. ...
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Shock Absorber Increases Capacities
From: ACE Controls Inc.Description: In traditional industrial shock absorbers, size and power are dependent on piston diameter, which is limited by the wall thickness of the outer and inner tubes. Enginners at ACE Controls Inc., ...
- Technical Information for Gas Springs
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Damping Coefficient
From: Airpot CorporationDescription: Use for time delay applications. Damping coefficient is almost always the primary determinant for applications where a specific time delay is required. ...
