Airpot introduces the first three in a series of online technical product videos which illustrate pneumatic control of unwanted motion using Airpot dashpots, snubbers and air-bearing actuators.

Dynamic systems often produce unwanted motion and the need for control of velocity, time delay, falling mass, vibration, oscillation, over action and impact. Airpot’s glass cylinder and graphite piston technology is used to control motion by pneumatic damping, actuating with air or vacuum, applying a precise force, for pumping or pulsing air, and to sense, indicate, or relieve pressure. The videos are 3-4 minutes long and graphically illustrate cushioning impact with an Airpot snubber device, the unique properties of the Airpel –AB zero friction air bearing actuator and the differences between pull and push damping. The online video offerings are part of Airpot’s new website which includes improved functionality that now allows designers to configure 3D CAD files of non-stock products with construction requirements specially tailored to the application.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and routinely works with customers to adapt products to suit their individual application needs. Value added sub-assembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visit www.airpot.com for detailed specifications. Call or email our technical staff for application assistance and ordering information. service@airpot.com 203-846-2021, 800-848-7681.

Key Markets: Semiconductor, Electronics, Medical Devices, Metrology, Test & Measurement, Laboratory Diagnostics.

Key Applications: filament & wire tensioning, positioning and manipulating optics, liquids, delicate devices, super sensitive force control, counterbalancing and safety for vertically positioned linear driven motor masses, Measuring weight, creep, tensile strength and calibration.

Accurate Force Pneumatics

Airpot Corp. announces “Accurate Force Pneumatics” for control of force, motion and displacement with unparalleled accuracy and low friction

Airpot Corp. has developed a line of products and systems, which excel in applications requiring precise, accurate control of actuation, damping, or displacement. Using high quality pneumatics in conjunction with Airpot’s precision glass cylinder and graphite piston technology, Airpot now offers designers levels of force and motion control unobtainable by other pneumatic means. Even zero friction actuation is possible, allowing for ultra precise measurement, application of minute forces, and sub-micron control of linear displacement. Ideal for uses such as high tech micro machining, polishing or grinding equipment, Airpot’s pistons and cylinders are manufactured to extremely tight tolerances and have special properties which also allow for precise volumetric displacements in the micro-liter range for sampling applications requiring the movement or measurement of a volume of air or gas.

Each of the product groups offers instrument quality pneumatic devices uniquely designed and optimized for highly accurate and repeatable force control at lower cost than other methods providing comparable functions and performance. The result is products and systems that Damp, Actuate, and Displace with superior accuracy and little or no friction. Airpot Accurate Force Pneumatics are ideal for designing or improving a product line or building specialized equipment to do research, high level testing or precision assembly.

Airpot’s “Accurate Force Pneumatics” individual component products aid the designer in the following three areas, and Airpot’s optimized systems provide the ultimate in customized force control.

Damping:

When there is the need to reduce or eliminate harmful or excessive motion Air Dashpots and Shock Absorbers use ambient air to precisely and accurately control force, velocity and impact.

Actuation:

When your mechanism needs a precise force Airpot Self aligning Actuators, Anti-Stiction and Zero-Friction air cylinders allow you to move it, hold it, or press it accurately and with amazing repeatability.

Displacement:

Precision Piston /Cylinder sets and Self-Aligning actuators make possible the precise dispensing of small volumes of air in pumping and flow applications, and can also be used for specialized bearing or driving requirements.

Optimized Systems:

Pre-selected systems components provide most of the functions needed between the air supply and the force output system to achieve your actuation objectives, and can save you research and development time. Our systems are matched to insure optimum performance and lowest cost.

Each of Airpot’s four major product groups, damping, actuation, displacement and optimized pneumatic systems offers instrument quality pneumatic devices uniquely designed and optimized for highly accurate and repeatable force control and smooth motion. Visit www.airpot.com for products and systems that exhibit superior accuracy and little or no friction. Airpot Corp. manufactures precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and works with customers to adapt products to suit their individual application needs. Value added sub-assembly services are also a specialty. Airpot Corp. is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Call or email our technical staff for application assistance and ordering information. service@airpot.com 203-846-2021, 800-848-7681.

Key Markets: Semiconductor, Electronics, Medical Devices, Metrology, Test & Measurement, Laboratory Diagnostics.

Key Applications: Filament & wire tensioning, positioning and manipulating optics, liquids, delicate devices, super sensitive force control, counterbalancing and safety for vertically positioned linear driven motor masses, Measuring weight, creep, tensile strength and calibration.

Super-sensitive grinding and polishing operations with forces controlled to as little as 0.001 pounds or 0.45 grams are now possible and being utilized in industry by customers of Airpot’s  Airpel –AB Air Bearing actuators. Many manufacturers with the need for extremely tight control of small incremental movements along with low forces and speeds are discovering the benefits of air bearing technology used to provide zero friction actuation. Electronic components, semi-conductor processing, metrology and tensioning product manufacturers are now able to achieve levels of measurement and control previously unattainable with conventional air cylinders.  The actuators combine air cylinder-like linear actuation with zero friction air bearing technology.

The Airpel -AB provides “Force Without Friction” which is made possible by a specially shaped stainless steel piston that is precisely fitted to a borosilicate glass cylinder. The introduction of pressurized air into the air bearing’s cylinder creates a true air bearing airflow effect around the piston.

With as little as 5 PSI of air applied to the cylinder, the same air that drives the piston also produces a stiff cushion of air to support the piston and prevent it from contacting the cylinder wall.  The result is an air cylinder that delivers virtually unlimited piston life, no lubrication and clean operation. In addition, the output force of this friction-free air cylinder is reduced only infinitesimally by movement of ultra-low friction ball joints used to connect the rod. These unique qualities allow Airpot Corporation to guarantee that the Airpel -AB will exceed the life of any machine or instrument in which it is originally installed.

“The Airpel -AB air bearing actuator is designed to fill a niche in the air cylinder industry where even the slightest friction, contamination, wear, or extreme temperature vulnerability of typical air cylinders cannot be tolerated.” said Mark Gaberman, President of Airpot Corporation.

Industries include, semi-conductor, optics, medical, and test and measurement. Applications may include, counterbalancing and safety support for vertically positioned linear motor driven masses, precise tensioning, positioning mechanisms supporting delicate materials, sensitive force control for holding or clamping fragile materials, or precise laboratory test equipment.

Airpel-AB air bearing actuators are available in metric models with four bore diameters and ten standard strokes to provide precisely repeatable driving or supporting forces from 2 grams to 58 kg. Operating temperatures range from -20 C to +90 C.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and works with customers to adapt products to suit their individual application needs. Value added subassembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visitwww.airpot.com for detailed specifications. Call or email our technical staff for application assistance and ordering information.service@airpot.com 203-846-2021, 800-848-7681.

Key Markets:

Semiconductor processing, Electronics assembly, Medical Devices, Metrology, Test & Measurement, Laboratory Diagnostics.

Key Applications:

Filament & wire tensioning, positioning  and manipulating optics, liquids, delicate devices, super sensitive force control, counterbalancing and safety for vertically positioned linear driven motor masses, Measuring weight, creep, tensile strength and calibration

High performance CNC micro machining centers used to fabricate small high precision parts from plastics, metals, glass, and ceramics require extreme control of forces and speeds. Micro machining equipment manufacturers with the need for tight control of small incremental movements along with low forces, high speeds and extreme levels of repeatability and resolution are discovering the benefits of air bearing technology used to provide zero friction counterbalancing. A counterbalance removes the effect of vertical masses in the system and protects from damage in power- off situations. A counterbalance system is often used to reduce the weight and drag inherent in the linear motor driver and associated linear bearing guide systems; however mechanical counterbalance devices often exhibit more friction than is ideal.  Airpot’s Airpel –AB Air Bearing actuator used as a counterbalance device allows the use of lower cost and smaller linear motor drives which helps to reduce heat and the adverse effects of differing thermal expansion rates.  Air bearing technology enables levels of measurement and control previously unattainable with conventional air cylinders or mechanical cable counterbalance systems.  The actuators combine air cylinder-like linear actuation with zero friction air bearing technology.

The Airpel -AB provides “Force Without Friction” which is made possible by a specially shaped stainless steel piston that is precisely fitted to a borosilicate glass cylinder. The introduction of pressurized air into the air bearing’s cylinder creates a true air bearing airflow effect around the piston.

With as little as 5 PSI of air applied to the cylinder, the same air that drives the piston also produces a stiff cushion of air to support the piston and prevent it from contacting the cylinder wall.  The result is an air cylinder that delivers virtually unlimited piston life, no lubrication and clean operation. In addition, the output force of this friction-free air cylinder is reduced only infinitesimally by movement of ultra-low friction ball joints used to connect the rod. These unique qualities allow Airpot Corporation to guarantee that the Airpel -AB will exceed the life of any machine or instrument in which it is originally installed and operated in accordance with specifications.

“The Airpel -AB air bearing actuator is designed to fill a niche in the air cylinder industry where even the slightest friction, contamination, wear, or extreme temperature vulnerability of typical air cylinders cannot be tolerated.” said Mark Gaberman, President of Airpot Corporation.

Industries include, semi-conductor, optics, medical, and test and measurement. Applications may include, counterbalancing and safety support for vertically positioned linear motor driven masses, precise tensioning, positioning mechanisms supporting delicate materials, sensitive force control for holding or clamping fragile materials, or precise laboratory test equipment.

Airpel-AB air bearing actuators are available in metric models with four bore diameters and ten standard strokes to provide precisely repeatable driving or supporting forces from 2 grams to 58 kg. Operating temperatures range from -20 C to +90 C.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and works with customers to adapt products to suit their individual application needs. Value added subassembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visitwww.airpot.com for detailed specifications. Call or email our technical staff for application assistance and ordering information.service@airpot.com 203-846-2021, 800-848-7681.

Key Markets:

Semiconductor processing, Electronics assembly, Medical Devices, Metrology, Test & Measurement, Laboratory Diagnostics.

Key Applications:

Counterbalancing and safety for vertically positioned linear driven motor masses, filament & wire tensioning, positioning  and manipulating optics, liquids, delicate devices, super sensitive force control, , Measuring weight, creep, tensile strength and calibration.

AirpelAB1

abactuator

Airpot announces its new line of adaptable piston and cylinder 9-5-9008_asets. Constructed using a graphite piston / borosilicate glass cylinder combination in which each piston is selectively matched to fit the cylinder with extremely close clearances. 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. Airpot piston & cylinder sets are unaffected by extreme temperature variations, run clean and do not contaminate surrounding components. No seals are required, and there are no liquids to leak. Materials used are self-lubricating and capable of exceedingly high cycle rates. They do not heat up or materially change under conditions of rapid and/or continuous cycling and have a life-span of multi-millions of cycles. Innovative designers use Airpot piston & cylinders sets as linear bearings, vacuum pickups, inertia sensors, portable piston pumps, spool valves, flow indicators, pressure sensors, dispensers, pneumatic calibration devices, Stirling Engine power pistons, and for many other demanding applications. Airpot piston/cylinder sets exhibit very low mass, cycle life in the billions, no deterioration or change in performance due to age or non-use, they respond to exceedingly low forces and pressures, are capable of ultra-high speeds, have the ability to move linearly and rotationally simultaneously and use a see-through cylinder.

The cylinders are available in bore sizes ranging from 0.220” to 1.75”, and lengths from the desired stroke plus 0.325” to the desired stroke plus 0.880”. All exhibit friction of less than 1 gram without side loads. Single unit base prices range from $11.40-$45.54.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and will work with the customer to adapt products to suit their individual application needs. Value added subassembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visit Airpot Piston/Cylinder Sets for detailed specifications. Call or write our technical staff for application assistance and ordering information.

service@airpot.com 203-846-2021, 800-848-7681.

An Air cylinder that uses a carbon /graphite piston within a glass housing produces precise and repeatable motion during membrane switch testing.

A precision low friction cylinder with a piston that slides on a cushion of air is being used to provide reciprocating motion in membrane switch test systems. An Airpel air cylinder, produced by Airpot Corp. Of Norwalk CT. generates a virtually constant level of friction at air pressures from 10 to 100 psi. As a result, the Airpel minimizes erratic movements that occur as a piston begins its travel within a cylinder.

This characteristic is vital in the testing of membrane switches, a process in which the air cylinder must generate forces that are precise and repeatable. Membrane switches are part of flat panel displays such as those used to enter orders at fast food restaurants or to enter machine control data in factories. A key is pushed on the flat panel display, resulting in the deflection of a polymer layer with silk screened ink traces. The deflecting layer then contacts another polymer layer that is also patterned with ink. When the ink patterns contact each other, the switch closes. As a result, an electrical circuit is closed and a signal is sent to a computer controller. To verify the quality of these membrane switches the testing company designs and manufactures computer controlled test systems. For quality control a keypad manufacturer pulls a few switches at random from the production line. They are electrically connected to the test system and positioned under an actuator probe that continuously monitors and logs switch resistance values.

To gather data about a switch’s performance a typical test might involve 5 million on/off cycles. The life test system measures the electrical resistance of switches and sends the data to a computer controller. In the controller, the resistance measurements are compared with the maximum allowable measurement for a switch which has already been entered by the system operator. A failed cycle occurs when the resistance reading exceeds allowable limits. To reproduce the action of activating the switch, a device is needed to automatically simulate the movement of a finger. To achieve this engineers developed silicone fingers and connected them to the piston rod of an Airpel cylinder. Depending on the design of the display panel the air cylinder is required to provide a load from 4 to 40 ounces, These loads are required with panel displays that have flat keys or dome shaped stainless steel buttons that return to their original shape after the load is removed. In the case of flat panel switches the air cylinder is required to hold the mechanical finger 1/32 inch. With the dome shaped tactile displays the Airpel typically holds the silicone finger 1/32” above the button and then deflects the button 1/16”.

A separate use of the air cylinder involves the testing of membrane switches that are part of touch screen display systems such as those used in automated bank tellers. In this example loads on the display buttons are from 2 to 4 ounces. The air cylinder does not apply direct pressure but lowers a weight on to the screen to activate the switch.

The air cylinder is microprocessor controlled to perform within test limits and tolerances during the test system’s development. “Electrically powered linear actuators are not an option,” according to the engineer. “They cannot achieve the precise control of force that is required in this application.” Design engineers considered using conventional air cylinders with rubber seals but they realized that due to erratic piston movement these would not provide the required control over force either.

A common load requirement for membrane keypads is 10 ounces. A conventional air cylinder produces a range of forces that generate loads that vary between 7.5 and 13 ounces, According to the engineers. By contrast the range of the Airpel cylinder varies by only plus or minus 0.2 ounces from .8 to 10.2 ounces.

The primary cause of erratic piston movement in conventional air cylinders is contact between the elastomer seals and air cylinder surfaces. A gradual increase in air pressure leads to a breakaway motion by the piston as it overcomes friction. However, it is extremely difficult to consistently control the movement of the piston during this breakaway phase. Membrane switch testing requires tight control not only over the piston rod’s linear movement but also over its lateral movement. It is important that the piston rod return consistently to the same location. Moreover, the Airpel and silicone rubber fingers are required to operate in an environment chamber at temperatures that cycle between -40 and 105 degrees C. Two conventional cylinders of different deigns were needed to span the range of temperatures.

The Airpel has two air chambers, one behind the piston and another in front of it. It consists of a carbon graphite piston custom fitted inside a glass cylinder. The gap between the piston and the cylinder is only 0.0005” and the roundness specification for the cylinder and piston is 0.0001” When the cylinder is pressurized, the piston rides on an air cushion formed between the piston and the glass wall. The piston rod slides on a carbon graphite seal and low friction bushing.

Design engineers at Airpot selected a pivot pin as the connecting component between the piston and its rod. The pivot pin allows the piston to realign itself in the cylinder should the cylinder be subjected to lateral forces. In this case the pivot pin allows the piston to float radially to realign itself. The resulting design produces extremely low friction along the length of the piston’s travel.

To make the cylinder rugged, the engineering team at Airpot designed a steel tube to encase the cylinder and piston assembly. The air gap between the glass cylinder and the steel tube allows the cylinder to continue to operate even if it is dented. During development tests the Airpel cylinder withstood the striking impact of a 10 pound weight and continued to function as required. The air cylinder operates for more than 25 million cycles. It requires no lubrication, which eliminates the potential for oil contamination. Such a characteristic is useful in industries such as food processing and semiconductor manufacturing, where cleanliness is key. Moreover, the Airpel cylinder eliminates the potential of fires fueled by oil.

In comparison tests, piston motion in the Airpel cylinder is smoother than piston motion in a comparable conventional air cylinder. According to Airpot, at 10 psi it takes 25% of the air pressure to overcome static friction in the conventional cylinder. Only 1 psi of air pressure is required to overcome the static friction in the Airpel cylinder.

The Airpel cylinder works best with loads that are between a few ounces and 30 pounds. The air cylinder is particularly suited for use in applications that require smooth motion at extremely low pressures and for moving lightweight objects at either low or high speeds.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and works with customers to adapt products to suit their individual application needs. Value added sub-assembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visit www.airpot.com for detailed specifications. Call or email our technical staff for application assistance and ordering information. service@airpot.com 203-846-2021, 800-848-7681.

Key Markets: Semiconductor, Electronics, Medical Devices, Metrology, Test & Measurement, Laboratory Diagnostics.

Key Applications: Filament & Wire Tensioning, Positioning and Manipulating Optics, Liquids, Delicate Devices, Super Sensitive Force Control, Counterbalancing and Safety For Vertically Positioned Linear Driven Motor Masses, Measuring Weight, Creep, Tensile Strength and Calibration

Marketing Contact: Edward Keane edkeane@airpot.com

Technical Contact: Tom Lee tlee@airpot.com

203 846 2021 www.airpot.com

800-848-7681

airpel 100000000000000(3)

antistiction curve(3)

Applying tension is a very common requirement in a variety of manufacturing operations. But sometimes high precision is needed in the control of the tension. For those situations, a nearly frictionless air cylinder can actually eliminate a traditional spring-loaded tensioner and provide a level of control not possible with ordinary air cylinders. In the spooling operation at a major fiber technology company this has been done with repeatable control over the tension in a closed loop system to less than 0.5 grams, with a response time constant of less the 0.1 second.

Winding operations are one example where tension is used to control how a material is wound onto a reel. If the material is large copper cables, the tension requirements may not be that severe. But for very small diameter or fragile materials, controlling the tension is critical. Otherwise the material can stretch, break, or be wound with uneven tension. An example is the manufacture of nano-technology fiber sensors. These sensors consist of long strands of material with special coatings, used in medical and other high specification applications. One of these fiber sensors, for example, consists of a 0.0013 in. diameter silver wire that is coated with a proprietary elastomer. This sensor is threaded into the human blood stream where it can monitor blood pressure, acidity, oxygenation, temperature and carbon dioxide. It is amazing technology, but very difficult to manufacture. The manufacturing system involves the spinning and drawing of fiber sensors. Fiber emerging from an extruder is first drawn down by traction. A laser measures the fiber diameter and is used in a feed-back loop to control the tension. A heater is often used to align the molecular structure of the polymers to increase tensile strength and flexibility. Tension is measured after this heating process and just prior to achieving the final desired fiber diameter. Feedback from the tension measurement apparatus and another laser are again used to control tension. Finally, the finished fiber is wound onto a series of spools, whose tension is controlled independently to customer specification. This is done to match the end user’s equipment requirements for the tension consistency and payout velocity. In most applications such as this, tension is achieved by applying force with a spring wound dancer. This consists of a wheel attached to a spring, which moves up and down in response to changes in force. Variations in line speed, wheel size or fiber size all drive changes in the tension on the fiber. The goal is to provide a constant tension on the line. The dancer arm effectively dampens variation in force to even the applied tension. Changing the overall level of tension, however, usually requires a hand adjustment of the spring loading.

For the manufacture of these types of fibers much more precise control of the manufacturing process is required.  In particular, the fiber tension needs be adjustable from 5 to 150 grams with an accuracy and repeatability of 0.5 gram. To obtain this precision, and to increase the versatility of the fabrication line, engineers decided they needed a computer controlled, closed loop system to automate adjustments in tension. First, the shaft of the dancer arm was augmented with an optical encoder to provide highly accurate positional data. Using internally developed algorithms, the position of the shaft was first used to control the driving motor speeds in a closed loop system.

But problems were immediately apparent; the control system was unstable. The dancer arm oscillated back and forth, while the computer struggled to adjust the tension. For the most part, this was caused by the low inertial mass of the fibers, whose tension the dancer arm was trying to control. The result was uneven tension application, fiber stretching and worse fiber breakage. The solution was to replace the spring with an air cylinder. An ordinary air cylinder would not do because most use elastomeric (rubberlike) seals that produce jerky and erratic motion. These devices cannot achieve the precise and repeatable force needed for this application. The cause of the erratic motion in ordinary air cylinders is stiction, which is the tendency for a cylinder to stick in the initiation of movement, or during continuous movement. To overcome this, Anti- Stiction ® technology provides an ultra-low friction air cylinder called Airpel.

Airpel is constructed with a graphite piston, custom fitted inside a precision Pyrex® glass cylinder. The fit is designed to produce a small 0.0005-in. gap between the piston and the glass cylinder so that when pressurized, the piston is surrounded by a cushion of air. The result is an ultra-low friction device with virtually no starting friction or running friction. By eliminating stiction, Airpel allows a high degree of control over the force that the air cylinder can apply. This is exactly what was needed for the control of the dancer am.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and works with customers to adapt products to suit their individual application needs. Value added sub-assembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visitwww.airpot.com for detailed specifications. Call or email our technical staff for application assistance and ordering information.service@airpot.com 203-846-2021, 800-848-7681.

Key Markets: Semiconductor, Electronics, Medical Devices, Metrology, Test & Measurement, Laboratory Diagnostics.

Key Applications: Filament & Wire Tensioning, Positioning and Manipulating Optics, Liquids, Delicate Devices, Super Sensitive Force Control, Counterbalancing and Safety For Vertically Positioned Linear Driven Motor Masses, Measuring Weight, Creep, Tensile Strength and Calibration

Marketing Contact: Edward Keane edkeane@airpot.com

Technical Contact: Tom Lee tlee@airpot.com

203 846 2021 www.airpot.com

800-848-7681

airpel 100000000000000(3)

antistiction curve(3)

6-17-2009_aAirpot Corporation announces a specially designed long length (up to 1 meter) Airpel Anti-Stiction actuator that meets the needs of coordinate measuring machine and othermetrology device manufacturers for a low friction counterbalance device to allow smooth movement and precise positioning of the z-axis measuring arm while manipulating the device through its measurement range.

Smooth, responsive and accurate movement of the Z-axis measuring head on coordinate measuring machines and other XYZ gantry systems utilizing linear motors are crucial attributes manufacturers seek when developing these devices The head moves in three axes of motion and must be manipulated manually in order to teach or train the device to read the critical measuring points for each of the individual parts to be inspected. A counterbalance system is often used to reduce the weight and drag inherent in the linear motor driver and associated liner bearing guide systems. However, mechanical counterbalance devices often exhibit more friction than is ideal. Airpot’s Airpel Anti-Stiction cylinders solve this problem utilizing a simple pneumatic cylinder with a revolutionary internal design that allows for virtually zero friction while precisely controlling the amount of counter force needed to eliminate the effect of driver and probe arm mass. Extremely low friction counterbalancing allows the use of smaller linear motors and drive mechanisms lowering the cost of the units. Another benefit derived from the Airpel unit is increased safety since the Airpel can prevent a crash in a power off situation.

Airpel cylinders are available in strokes up to 1 meter customized specifically for counterbalancing and counterforce applications. Airpel Anti-Stiction Air Cylinders are built using a graphite piston / borosilicate glass cylinder combination in which each piston is selectively matched to fit the cylinder with extremely close clearances. 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. Airpel cylinders are unaffected by extreme temperature variations, run clean and do not contaminate surrounding components. No seals are required, and there are no liquids to leak. Materials used are self-lubricating and capable of exceedingly high cycle rates. They do not heat up or materially change under conditions of rapid and/or continuous cycling and have a life-span of multi-millions of cycles.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and Airpel-AB Air Bearing Actuators. Airpot welcomes custom requirements and will work with the customer to adapt products to suit their individual application needs. Value added sub-assembly services are also a specialty. Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visit Airpel info for detailed specifications. Call or write our technical staff for application assistance and ordering information. engineering@airpot.com

Marketing Contact: Edward Keane edkeane@airpot.com

Technical Contact: Tom Lee tlee@airpot.com

203 846 2021 www.airpot.com

800-848-7681

Norwalk, CT. – Airpot Corporation Airpel Division, has introduced the Airpel-AB Air Bearing Actuator that combines air cylinder like linear actuation with zero friction air bearing technology.

The Airpel -AB provides “force without friction” which is made possible by a specially shaped stainless steel piston that is precisely fitted to a borosilicate glass cylinder. The introduction of pressurized air into the air bearing’s cylinder creates a true air bearing airflow effect around the piston.With as little as 5 PSI of air applied to the cylinder, the same air that drives the piston also produces a stiff cushion of air to support the piston and prevent it from contacting the cylinder wall.

The result is an air cylinder that delivers virtually unlimited piston life, no lubrication and clean operation. In addition, the output force of this friction-free air cylinder is reduced only infinitesimally by movement of ultra-low friction ball joints used to connect the rod. These unique qualities allow Airpot Corporation to guarantee that the Airpel -AB will exceed the life of any machine or instrument in which it is installed.

“The Airpel -AB air bearing actuator is designed to fill a niche in the air cylinder industry where friction, contamination, wear, and the extreme temperature vulnerability of typical air cylinders is not tolerated.” said Mark Gaberman, President of Airpot Corporation. Industries include, semi-conductor, optics, medical, and test and measurement.

Applications may include, precise tensioning, positioning mechanisms supporting delicate materials, sensitive force control for holding or clamping fragile materials, counterbalancing and safety support for vertically positioned linear motor driven masses, or precise laboratory test equipment.

Airpel-AB air bearing actuators are available in metric models with four bore diameters and ten standard strokes to provide precisely repeatable driving or supporting forces from 2 grams to 58 kg. Operating temperatures range from -20 C to +90 C.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and will work with the customer to adapt products to suit their individual application needs. Value added subassembly services are also a specialty.

Airpot Corporation is a trusted supplier to many of the world’s most prestigious original equipment manufacturers.
Marketing Contact:  Edward Keane edkeane@airpot.com

Technical Contact:  Tom Lee tlee@airpot.com

203 846 2021 www.airpot.com

800-848-7681

1-25-2009_aAirpot Corporation announces the addition of a position sensing option to its popular line of Airpel non-stiction air cylinder actuators. The company offers non-contact electronic switching sensors from Sick, Inc. using state-of-the-art GMR technology. These are the most precise and accurate magnetically activated cylinder sensors on the market. The addition of GMR sensing technology to the Airpel non-stiction cylinder line offers OEM designers an easy-to-install, secure, and reliable solution. For customers desiring electrical output of piston position, most Airpel models are offered with an optional switch-activating magnet on the piston, as well as one or more option aluminum tracks measuring 9.51mm wide and 6.83mm high, attached to the cylinder. The tracks are specially designed for easy, secure mounting of the Sick, Inc. position sensors which are offered separately. The sensors operate at 10-30 V DC and have repeatability of less than or equal to 0.2mm. Airpot stocks popular models of these extremely reliable GMR sensors with PNP or NPN output, along with matching accessory extension cables available in 2 and 5 meter lengths. OEM designers are assured safe and accurate feedback. A magnetic field has secondary maximum levels that can cause double switching behavior in Hall Effect and reed sensors. But GMR (Giant Magneto Resistive) technology is based on the measurement of the average strength of the magnetic field. This gives GMR sensors some important advantages over other types of sensors. GMR sensors greatly reduce the potential for troublesome double switching ensuring better accuracy. GMR sensors do not need to be adjusted to magnetic field polarity. With its compact profile, the GMR sensor chip is encased in a small, rugged plastic shell. The entire sensor can fit in a common soda straw less than 1.25 inches long. There is a small LED window in the shell to allow visible indication of the switching signal. Installation is easy, secure and user friendly. The Sick, Inc. GMR sensor is specially shaped to allow for easy installation in the Airpel T-slot aluminum track. The track comes permanently bonded along the entire length of the cylinder in the location desired when ordering sensor-ready Airpels.

Airpot Corporation manufactures instrument quality, precision Air Dashpots, Snubbers, Pneumatic Actuators, Airpel Anti-Stiction Air Cylinders and -AB Air Bearing Actuators. Airpot welcomes custom requirements and will work with the customer to adapt products to suit their individual application needs. Value added subassembly services are also a specialty.

Airpot is a trusted supplier to many of the world’s most prestigious original equipment manufacturers. Visit
Airpot Sensors for detailed specifications. Call or write our technical staff for application assistance and ordering information.service@airpot.com 203-846-2021, 800-848-7681.

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