Category Archive: Hydra-Pneumatic Cylinders

Improving Quality and Reducing Costs In Seal Manufacturing

A major U.S manufacturer of steel-cased, multi-element seals contacted Aries Engineering/HyperCyl® for help in reducing excessive warranty costs of their finished product. The OEM was experiencing in excess of $10 million per year in warranty claims due to their current hydraulic presses’ inability to monitor the number of elements within a given assembly. They needed a press and monitoring system that could accurately measure the number and thickness of seal components within a sub-assembly prior to being finalized.

Aries Engineering supplied the solution with our HyperCyl IntelliCyl® cylinders with integral LVDT and Load Cell options, combined with the HyperView- Press®, our Signature Analysis Monitor, which provided measurement of the Part Stack-Up height prior to finalizing the seal. This ultimately reduced in-process part non-conformance to near-zero. The HyperCyl monitoring systems were able to accurately measure the inclusion or absence of a 0.002” thickness seal element by establishing a series of “windows” around critical points of the operation, namely the part stack-up. ONLY when this critical “window” set point was confirmed would high pressure then activate and finalize the process. Aries Engineering/HyperCyl® was able to accommodate this customer’s needs and reduce overall warranty claims to less than $60,000 annually, a savings well over $9 million per year!

We can also help you improve the quality of your product, while reducing your costs and allowing your business to become more competitive. We offer Hydra-Pneumatic and Servo solutions, applications engineering, testing, tech-support and the best warranty in the industry!

Find out more about how we can meet your application needs, email sales@hypercyl.com.

**1. An infeed conveyor provides the subassembly to the gripper location. 2. From there, the gripper will load the seal into the nest cavity. 3. The HyperCyl cylinder with IntelliCyl force/distance feedback assembles the filaments and forms the final shape. 4. From there, only when the part is validated and passes a series of inspections it is automatically able to be removed from the cell into a container. 5. Any parts that do NOT pass inspection are automatically redirected into a bad parts bin for scrap. 6. Isolating these good and bad parts is crucial for the prevention of part-non-conformance.

Using Cleaner Technology for a Brighter Factory

Outdated Hydraulic systems require constant maintenance and high cost pumps, Pure Pneumatic systems lack the force and controllability, Arbor Presses and Hammers exhaust my employees, Flywheels are dangerous; if these problems sound familiar you’re not alone. Why not use a clean, reliable, consistent & cost-effective product to REPLACE all of these? The Solution is HyperCyl!

In most automated assembly applications which can be insertion, piercing, forming or assembling, the key ingredients to a successful project are precision, accuracy and repeatability. Continuous Quality Control over these processes that can determine good/bad parts while in motion is the new norm. HyperCyl-EMA, HyperCyl hydra-pneumatic & HyperView-Press are just a few of the options that have made HyperCyl a one-stop solution provider for over 25 years.

*HyperCyl-EMA (electro-mechanical actuator) is a robust, servo driven actuator designed for precision assembly applications or applications not suited for standard HyperCyl products. Available in both Roller Screw and Ball Screw configurations with load ratings from 5kN to 230kN (1-25 tons), HyperCyl-EMA provides a new level of price/performance in the automotive, aerospace, DOD, appliance, medical, electronics and transportation industries covering a wide range of applications. Capable of extremely high rates of repeatability and up to 500mm/sec ram speeds, HyperCyl-EMA provides the performance and flexibility required in both current and future manufacturing environments and, it’s built in the USA.

*HyperCyl (hydra-pneumatic cylinder) is a low cost air/oil solution that can replace outdated technologies with a more precise, controllable stroke. Not your grandfathers air/oil unit, we have re-packaged the 3-piece air/oil design into a single self-contained unit ready for use upon shipment. Available from 5kN to 1,780kN (1-200 Tons) using ONLY shop air, HyperCyl provides a long-life cylinder that is simple to maintain, runs on 2 pneumatic valves, requires no drip pans or expensive cooling systems but also boasts a LIFETIME warranty.

*Available for both the EMA and HyperCyl is the HyperView-Press signature analysis controller. Precise force/distance monitoring coupled with trending, data logging, Cpk and data analysis capabilities will profoundly improve finished product quality and substantially reduce manufacturing costs. During the cycle, the unit gathers information from the Inputs (Analog or Encoder) and provides a wave-form curve with user-adjustable windows indicating what a Valid/Good part is. The “Window 7” embedded software provides the best of both worlds: ease of use/setup and the deployment simplicity of an off-the-shelf solution tailored to your exact press monitoring requirements.

Find out how we can help solve your application needs, email sales@hypercyl.com.

“Punching and Shearing” Tips and Tricks

Aries Engineering/HyperCyl is a diversified manufacturer of Hydra-Pneumatic Cylinders, Servo Actuators, Presses, Pierce Units and Joining Systems designed for use in a wide range of assembly
and forming applications. HyperCyl has a place in virtually every segment of industrial production. HyperCyl has a proven track record in thousands of applications as a clean, quiet, reliable, self-contained power source utilizing only compressed air to generate ample output forces from 3kN – 1,780kN.

The formula to calculate punching force is quite simple:

Force = Hole Perimeter (length of cut) x Material Thickness (aluminum, steel, stainless) x Shear Strength or Tensile Strength (depends on type of punch being used). You must make sure that you keep your units consistent between Metric and Imperial.

Metal Forming

Forces required for metal piercing can be calculated as follows:
L= Length
T= Thickness of Material
S= Shear Strength of Material

L x T x S = Force Required

(stripping force= 10% of Pierce Force)

Stripping force is the force required to typically remove or retract the punch after it has pierced the material.

Example:

3/8 ” (.375″) hole through .032″ thick CRS (cold rolled steel)
L= 1.178 (.375 x 3.141)
T= .032
S= 55,000

1.178 x .032 x 55,000= 2090 lbs.

Here are some helpful tips and tricks for punching and shearing applications:

*While the ultimate Tensile strength is used for initial calculations for flat punch designs, the formula for using full tensile strength is applied at the onset to establish a WORST-CASE scenario for sizing our cylinders. Real life tensile can vary based on mold/forming time, cooling time, work hardening (if applicable) and a host of other miscellaneous factors. We don’t see as much variation with Aluminum castings as we do with steel.

*We can provide parts-testing data and extrapolate from our testing for a 0.25”, 0.375”, and 0.500” nominal punch holes to determine the actual tensile/shear strengths and calculate real life forces, factoring in the flat punch or shear punch designs.

*Not everyone uses Shear in the punch head, MOST use a flat punch so it can be sharpened easily and reused for many years. When using SHEAR in your punch head, the Shear Strength can be used for force calculations.

*In all piercing applications, a “stripper” or positive force on the part DURING punching operation should be considered so the part can remain located in nesting during retraction of the punch from part. If absent from your design, the part will retract with the punch during retract.

*There are numerous versions of shearing punch designs which directly correlate to forces required:

-High angle, straight cut (think scissors)
-Rooftop
-Inverted Rooftop
-Inverted Rooftop
-Double Valley
-JK Shear (flat punch, using Tensile strength, NOT shear strength)

Find out more how HyperCyl can help meet your application needs, email sales@hypercyl.com.

HyperCyl Spotlight: UTV Applications

Aries Engineering/HyperCyl is a diversified manufacturer of Hydra-Pneumatic Cylinders, Servo Actuators, Presses, Pierce Units and Joining Systems designed for use in a wide range of assemblyand forming applications.

Roll Cage Pierce/Form: Typical End-forming and tube Piercing of UTV Roll Cage requires an Approximate Force Range 5-40 Tons depending on the details. Piercing requires internal expanding mandrels to reach long distances inside the tube body. End-forming varies dramatically based on the needs of each application but involves forming the end of tubes to various GD&T for mounting, safety, and other items. Best used with IntelliCyl for force/distance monitoring to ensure Quality is maximized.

REAR TRACK ARM BUSHING INSERTION: From the basic to the complex, we have seen it all regarding bushing insertions. Simultaneous running of LH & RH parts simplifies tooling setup and reduce part-to-part rates dramatically. Approximate Force for 1.500” – 2.500” bushing diameter ranges from 8-Tons to 15-Tons depending on the interference fit between the sleeve ID and bushing OD. Lubrication is sometimes necessary to reduce forces and ensure a good insertion. Lubrication is applied to the ID of sleeves or OD of bushing which reduces chatter during the installation process and provides a more accurate press-in.

WHEEL HUB BEARING AND STUD INSERTION: Wheel bearings are a critical function in the construction of UTV’s as they must be properly installed and seated or risk the longevity and ride comfort to the vehicle. Likewise, the wheel studs are installed with special fastening technology using serrations on the stud to withstand torque-out when attaching the wheel nuts. Force/ distance monitoring is almost always required for these critical components.

CONTROL ARM BUSHING INSERTION: Aries Engineering specializes in Control Arm construction due to our innovative power heads in Servo and Hydra- Pneumatic Self-Equalizing units.
These equalizing units are a necessity due to the small window between bushing sleeve ID’s. Backing up each sleeve prior to installation is required so as not to damage or twist the arm during bushing installations. Approximate Force Ranges from 8-20 Tons utilizing our IntelliCyl option for force/distance monitoring.

BALL JOINT INSTALLATION: Ball Joint installations typically require secondary retention to meet today’s safety requirements. Aries Engineering has patented a proprietary Snap-Ring installation process that automatically installs the Ball Joint then the snap-ring within a single process. Ordinarily this is a very manual process with handheld retaining ring pliers or circlip
pliers to ensure the clip is seated 100% and 360-degrees around the circumference. Approximate Force per Ball Joint can be as high as 20-Tons. IntelliCyl is required for force/distance monitoring of this critical component during the installation process.

PLASTIC FASCIA PIERCING/ DEGATING: Multiple components within the UTV require post-mold piercing to ensure proper alignment of fasteners and attachment points that cannot be done during the molding process. Piercing gas-cap holes to fog-lamp holes, hitch slots to lightening holes, we have Servo and Hydra-Pneumatic power units available that are well-suited. When a substance is melted and poured into casting molds, channels called gates allow the material to flow into the hollow spaces of the mold to form into a solid part. Removing the material that hardens in the channels so that just the finished piece remains is known as degating. We have developed methods to ensure this degating only removes excess material without damage to the end-product.

Aries Engineering/HyperCyl is a diversified manufacturer of Hydra-Pneumatic Cylinders, Servo Actuators, Presses, Pierce Units and Joining Systems designed for use in a wide range of assembly
and forming applications. HyperCyl has a place in virtually every segment of industrial production; from clean-room medical and electronic component manufacturing to heavy industrial piercing and forming. HyperCyl has a proven track record in thousands of applications as a clean, quiet, reliable, self-contained power source utilizing only compressed air to generate ample output forces from 3kN – 1,780kN.

Find out more how HyperCyl can help meet your application needs, email sales@hypercyl.com.

How To: Build Intelligence into Piercing for Today’s High Force/High Speed Environments

Flexibility, performance and cost have always been key factors in today’s expanding manufacturing marketplace.  For decades hydraulic and mechanical presses were the only options for high-speed, high-force Piercing Applications. HyperCyl Hydra-Pneumatic and HyperCyl-EMA servo based systems have emerged as viable alternatives geared towards today’s lean manufacturing processes. HyperCyl also provides a much cleaner solution without the mess, accumulators, drip pans, noise, heat, fans and overall footprint of outdated power technology.

So, what to do when you need high-speed Piercing using a fixed system or robot-mounted pierce head? Well, that depends on your needs, annual Volume requirements and how long the project will run. Other factors include the material thickness, tensile strength and length-of-cut to determine the force necessary for any given piercing project.

Outlined below we will discuss a Hydra-Pneumatic system using IntelliCyl along with a Servo system using HyperCyl-EMA and our HyperPierce equalizing units.

 

HyperPierce self-equalizing unit with HyperCyl-EMA Servo Technology

8-Ton Self-Equalizing ServoPierce unit (HyperCyl-EMA)
Capability: Self-Equalizing units have the benefit of moving to your part. Meaning the press itself will move around your fixed part, not the other way around. HyperPierce + HyperCyl-EMA provides exceptional control over force, speed and distance characteristics for any application. It can also tell when your tool begins to dull due to subtle increases in force over a period of time. Signature analysis, data logging, part history, trending and root cause analysis options are also available for added functionality and tracking.

Reliability/Costs: Servo technology is inherently capable and sizing them appropriately is crucial. Expected lifetime is from 3 Years to 5 Years, configured for any particular application. Long-Term Reliability coincides with maintenance schedules and upkeep of tooling. Costs can be higher than Hydraulics but the Energy efficiency achieved with low down-time, low noise pollution, ZERO environmental pollution (no oil) will ensure a quick ROI.

Speed: Up to 16.00 in/sec with an extremely high rate of repeatability. Usually requires a deceleration setting before Contact and Home to maximize screw life. Multiple move profiles and full control over the process from start to finish.

Forces: 1-10 Ton in Ball Screw configurations (BS1 & BS2) with a medium dynamic load rating; 1-25 Tons in the Roller Screw configuration with a high dynamic load rating.

 

HyperPierce self-equalizing unit with Hydra-Pneumatic Technology

 8-Ton Non-Equalizing unit with HyperCyl (Hydra-Pneumatic)

Capability: For basic “Fixed-Mount” pierce units, keeping things simple is sometimes best. Using only 2 pneumatic valves for operation the HyperCyl (hydra-pneumatic) cylinder greatly streamlines the startup process versus hydraulic or even servo-controlled systems. Cylinders are available in (6) design configurations. Cylinder can have the ability for Swivel Fittings (HPS and HZS systems only) for robot-mounting agility. When coupled with the IntelliCyl option, (load cell and LVLT) force distance monitoring is available.

Reliability/Costs: (MTBS) Mean time between service interval of approximately 4-5 million cycles because down time is not an option. LIFETIME warranty on all HPI – HPS – HPX – HZ –  HZS – HPT cylinders, 1-Ton through 200-Ton. Typically HyperCyl is more expensive than Pneumatic cylinders but offer the same Clean, Quiet & Self-Contained operation WITH controllable force. Less expensive than hydraulic and mechanical systems for both short & long-term investments.

Speed: Fast Approach speeds similar to that of a pneumatic cylinder (6 in/sec – 10 in/sec) and High Pressure speeds similar to that of hydraulic cylinders (1.0 in/sec – 2.0 in/sec).

Forces: 1-200 tons of output force using 30-100 PSI shop air.

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Additional Products

HyperView PressSignature Analysis

IntelliCylLoad Cell & Linear Transducer

HyperPressC Frame, H Frame, CGB Frame

Mechanical Rod Locks – CSA compliance, CE certified, ISO certified

How To: Determine the Appropriate Technology for High Force/High Speed Applications

Flexibility, performance, capital and operating costs have always been key factors in today’s expanding manufacturing marketplace. For decades hydraulics and mechanical presses were the only options for high-speed, high-force assembly and forming applications. More recently hydra-pneumatics and servo-based systems have emerged as viable low-cost alternatives. So which technology is best suited for a specific application? The following topics can serve as a guideline towards the correct usage.
Aries Engineering is the only manufacturer Headquartered and Manufactured in North America offering both servo driven and hydra-pneumatic solutions.

Servo-Based Technology – HyperCyl-EMA

Capability: Provides exceptional control over force, speed, and distance characteristics. Requires the use of a full PLC/PC based electrical panel and 230V/460V. Best used for push-to-distance or push-to-force applications, push/pull applications and where Extreme repeatability is essential. Signature analysis, data logging, part history, trending and root cause analysis options are also available for added functionality and tracking.

Reliability: Servo technologies are inherently capable and sizing them appropriately is crucial. Expected lifetime is from 3 Years to 5 Years, configured for any application. Long-Term Reliability coincides with maintenance schedules.

Speed: Up to 16.00 in/sec with an extremely high rate of repeatability. Requires a deceleration setting before Contact and Home to maximize tooling and screw life.

Forces: 1-10 Ton in Ball Screw configurations (BS1 & BS2) with a medium dynamic load rating; 1-25 Tons in the Roller Screw configuration with a high dynamic load rating.

Maintenance: 3/6-month lube schedule & periodic belt tension check dependent on usage and environment.

Cost: Can be higher initial cost than comparable Hydraulics. Energy efficiency and ROI achieved with minimal downtime, low noise pollution, rapid setting changes without involving tooling, ZERO environmental pollution, comparable energy usage to hydraulics without the mess.

Hydra-Pneumatic Cylinders – HyperCyl

Capability: Utilizing 2 pneumatic valves for operation and a FRL greatly reduces start up time. Cylinders are available in 5 design configurations and 11 standard sizes. Best used for; crimping, dimpling, peening, swaging, inserting, clinching, pressing, staking, piercing, punching, marking, bending, and forming. When coupled with the IntelliCyl option, (load cell and LVLT) force distance monitoring is available.

Reliability: (MTBS) Mean time between service interval of approximately 4-5 million cycles because down time is not an option. LIFETIME warranty on all HPI – HPS – HZ – HZS – HPT cylinders, 1-Ton through 200-Ton.

Speed: Fast Approach speeds similar to that of a pneumatic cylinder (6 in/sec – 10 in/sec) and High-Pressure speeds similar to that of hydraulic cylinders (1.0 in/sec – 2.0 in/sec).

Forces: 1-200 tons of output force using 30-100 PSI shop air.

Maintenance: 20 million cycles before seals require replacement. Field serviceable by maintenance techs and 24-hour HyperCyl assistance is available. Periodic maintenance depends on application and environment.

Cost: More expensive than Pneumatic cylinders but offers the same clean, quiet & self-contained operation. Less expensive than hydraulic and mechanical systems for both short & long-term investments.

Additional Products:

HyperView Press – SigPOD
IntelliCyl – load cell & linear transducer
HyperPress-C Frame, H Frame, CGB Frame
Equalizing/ Non-Equalizing Units Pneumatic
Mechanical Rod Locks

Industries Served:

HyperCyl Manufacturing Industries Served – Automotive, DoD, Lawn & Garden, Appliance, HVAC, Food & Beverage Packaging, Destructive Testing, ATV/Off-Road

HyperCyl-EMA Industries Served – Medical Device Manufacturing, Aerospace, Automotive, Food Product Manufacturing, Clean Room Environments, Lab Testing

To learn more about our product solutions and how they can benefit your assembly or forming application, contact us today. To discuss your application requirements with one of our experts, request a quote.

Can HyperCyl meet your application needs?

HyperCyl’s products are designed to enable clean, quiet, and precise operations with minimal maintenance requirements. Our diverse product portfolio supports a wide range of industries and applications.

Industries

Aries Engineering/HyperCyl is a Michigan-based company specializing in the fabrication of cylinders, presses, and other products for assembly and forming applications in the industrial automation, manufacturing, commercial, and defense industries. Our versatile products cover virtually all segments of industrial production, from medical and electronic device manufacturing to heavy industrial piercing and forming, including:

  • Automotive (engine/transmission, suspension, body)
  • Medical devices (clean-room)
  • Semiconductors (clean-room)
  • Electronic devices
  • Appliances (washer, dryer, etc.)
  • Munitions (bullet manufacture, warhead seal & contain systems)
  • Office furniture
  • Coining
  • Hemming

Meeting Your Application Needs

Whether you need a simple press, high-precision actuator, or fully customized turnkey system, HyperCyl has the manufacturing expertise and problem-solving skills to provide unique solutions for a range of assembly and forming challenges. Our press systems include C-frame, H-frame, and CBG-frame options, and we also offer HyperPierce units available in both equalizing and non-equalizing designs.

HyperCyl cylinders are clean, quiet, and reliable self-contained power sources with versatile designs capable of accommodating various industrial operation requirements.

In addition to our standard product line, we also accommodate special requests, and can tailor our cylinder and actuator designs around the customer’s specific production requirements with reasonable turnaround times and prices.

Quality You Can Expect

When you choose a HyperCyl for your operation, you can expect:

  • The ability to separately regulate the approach and power strokes, providing enhanced control over the process and eliminating the need for cylinder reconfiguration
  • Increased retract force versus competition, allowing for heavier tooling
  • No stored energy hazards as the cylinders do not use mechanical springs to assist the pistons (competition does use internal springs)
  • Increased value over alternative cylinder options, including multi-stage air cylinders and hydraulic cylinders and power units
  • Limited lifetime warranty

To learn more about our product solutions and how they can benefit your assembly or forming application, contact us today. To discuss your application requirements with one of our experts, request a quote.

A Guide to Pneumatic Cylinder Installation

Pneumatic cylinders are mechanical components that provide linear force to various devices and systems. They generate the force by applying compressed air to one side of a sealed barrel and exhausting it from the other side. This action causes the piston/rod assembly contained inside to extend or retract.

It is important to install pneumatic cylinders correctly. Otherwise, there is a risk of inaccurate or unreliable operation and premature failure. This is especially true for hydra-pneumatic cylinders, which generate high forces in a small package. As such, incorrect installation can lead to severe equipment damage and/or operator injury.

Below, we discuss how to install a pneumatic cylinder properly. Additionally, we highlight the importance of testing the system before putting it into operation and the precautions to take when performing installations.

How Do I Install a Pneumatic Cylinder Properly?

Pneumatic CylinderThere are two essential fixing points to consider when installing a pneumatic cylinder: the body and the piston rod end. How these points are fixed depends on the application.

In static applications, the cylinder can be mounted to the machine bench and fixed rigidly to its structure. Both pneumatic and hydra-pneumatic cylinders are typically mounted with a rectangular front flange mount (also sometimes called an MF1 mount or FH mount) or tapped holes in the front of the face (also sometimes called an MR1 mount or UH mount) due to the high forces generated. However, some pneumatic cylinders use a semi-rigid trunnion mounting method (MT1) that utilizes body supports or pivots and clevis pins. It allows them to rotate as they follow the extension and retraction of the piston rod. In rare cases, a side lug mounting method (MS2T mount) may be used.

In complex linkage applications, the cylinder must be able to swivel on its mountings. There are several solutions to this mounting requirement. For example, a front clevis, central trunnion, or rear hinge can be used on the body of the cylinder to allow the cylinder and load system to achieve different degrees of balance. Alternatively, a clevis, front hinge, or universal eye can be used at the end of the piston rod to mount swivel attachments. If a trunnion mounting method is chosen, it is essential to ensure the cylinder can oscillate freely on the mountings and the pipe connections can flex when in use.

Some of the things to keep in mind when installing a pneumatic cylinder include:

  • Minimize or eliminate side loading. Side loading is highly damaging to pneumatic cylinders. Ensuring the cylinder is correctly aligned and properly mounted can reduce the risk of it occurring. An alignment coupler or die set coupling can also eliminate or minimize side loading when attaching the rod end to the tooling.
  • Lubricate the bearing slides and trunnions. The bearing slides and trunnions should be lubricated as per the manufacturer’s guidelines.

Why Should I Test the System?

Before putting a cylinder into operation, it is critical to test the entire system to ensure the component actuates with minimal resistance and the rod experiences minimal side loading. Testing operations can be conducted by using a flexible air line and blow gun to check the cylinder is installed properly and able to move freely at the published minimum operating pressures. For hydra-pneumatic cylinders, it is vital to test them in low pressures (approach and retract) without going into high pressures (intensification) to ensure the tooling and overall setup are aligned correctly. These testing operations should follow the manufacturer’s guidelines for sequencing the cylinder for approach, retract, and intensification.

What Precautions Should I Take When Installing Pneumatic Cylinders?

There are many considerations to keep in mind when installing a pneumatic cylinder. Be sure to take the following precautions to ensure safe installation:

  • Avoid attaching unsupported loads directly to the piston rod. Use roller guides or a slide to support the load.
  • Minimize bending moments. Suspend the rod end from a roller track or another form of external guidance if it has a long out-stroke and high shear weight.  Install external bearings, or guides, to reduce side loading wherever possible.
  • Align the pneumatic cylinder and guided loads properly. The use of alignment couplers, or die set couplers, will overcome minimal alignment issues.
  • Use properly conditioned air, according to the manufacturer’s recommendations.  Particulate filtration, removal of water (moisture), and other contaminants is important for nearly every manufacturer’s cylinders and pneumatic valves.

Hydra-Pneumatic Cylinder Solutions at HyperCyl

If you’re looking for hydra-pneumatic cylinders and presses for your assembly and forming operations, turn to the experts at HyperCyl. Equipped with more than 20 years of experience, we have the knowledge and skills to help you identify the right equipment for your needs. Our products are carefully designed, assembled, and installed to allow for greater process control, higher retract force, and better cost savings.

For more information about pneumatic cylinders or our product and service offerings, contact us or request a quote today.

Everything You Need to Know About Hydra-Pneumatic Cylinders

Hydra-pneumatic cylinders—commonly referred to in the industry as hydro-pneumatic cylinders, air-over-oil cylinders, or intensifier cylinders—are pneumatically controlled cylinders engineered to generate higher hydraulic pressures to achieve a greater stroke force than can be attained by solely pneumatic cylinders of the same bore size. For example, a 5-inch bore pneumatic cylinder can output less than 1 ton of force at 100 psi, while a 5-inch bore hydra-pneumatic cylinder can produce up to 10, 15, or 20 tons of force, depending on the design.

The following blog post provides an overview of hydra-pneumatic cylinders, including how they work, key features, typical applications, and solutions at HyperCyl.

How Do Hydra-Pneumatic Cylinders Work?

Pneumo-Hydraulic CylinderIn contrast to strictly pneumatic or strictly hydraulic cylinders, these hybrid cylinders rely on the surface area differential of an internal pneumatic piston-rod assembly to significantly increase the pressure of trapped oil above the work piston, to provide an intensified hydraulic cylinder output force. Initially, they function similarly to pneumatic, double-acting cylinders, extending and retracting to the workpiece with output forces typical of pneumatic cylinders. However, once in contact with the workpiece, a second pneumatically controlled cylinder section drives a rod into the oil section, sealing it off, and intensifying the internal pressure. The intensified oil pressure pushes against the work piston, producing an increased output thrust, typical of hydraulic cylinders.

Similar to other double-acting pneumatic cylinders, hydra-pneumatic cylinders utilize valves to control their motion. They have one four-way valve to control approach and retract motion, and one four-way valve to control oil pressure intensification. This design combines the advantages of pneumatic and hydraulic cylinders without any of the disadvantages (e.g., excess heat and noise, space limits, or risk of leaks). Compared to strictly pneumatic cylinders with a multi-stage design, these cylinders consume only about 1/4 to 1/3 of the air.

Key Features of Hydra-Pneumatic Cylinders

While hydra-pneumatic cylinders come in a variety of designs to suit different applications, some of their key features include:

  • HPX Hydra-pneumatic cylinderThree major moving components
  • Simple control circuits
  • Total/air oil separation on both sides of the oil
  • Wear bands on the reservoir and work pistons
  • Linear output forces up to 200 tons
  • Heavy-duty construction for durability and reliability
  • Tie rods with tensile strengths of 100,000 psi
  • Mean time between failure (MTBF) of 4.7 million strokes
  • Service life of 20 million strokes
  • Operational capacities in any position or attitude
  • Medium-duty mounting styles compliant with National Fluid Power Association (NFPA)
  • Included repair manual and field serviceable seal kits
  • Options for gage kits, sensors, total stroke limiters, alignment couplers, and more

Typical Industry Applications for Hydra-Pneumatic Cylinders

InetlliCyl Pneumo-Hydraulic CylinderThe full line (six series) of HyperCyl® hydra-pneumatic cylinders are designed for machine builders and OEMs to use in their own presses and automation, as well as for use in HyperCyl supplied presses. HyperCyl presses are available with “C” frames or “H” frames, unguided, two-column guided, or four-column guided upper bolsters, and bench-mounted, pedestal, or machine base configurations. Due to their modular design, machine designers can choose a simple frame and drive unit design that facilitates integration into a larger assembly process, or a turnkey design that incorporates automation technology, controls, and more.

HyperCyl presses find use in a wide range of production applications, such as:

  • Part insertion and assembly
  • Material piercing
  • Clinching
  • Staking
  • Drawing
  • Marking
  • Cutting
  • Pressing
  • Folding
  • Riveting

Why Partner With HyperCyl for Your Hydra-Pneumatic Cylinder Needs?

HyperCyl by Aries Engineering Company (AEC) is a privately owned company based in Dundee, Michigan. We specialize in the manufacture of hydra-pneumatic cylinders and presses for assembly, piercing, and forming applications. By utilizing our cylinders, our customers benefit from the following:

  • Greater Process Control: Our cylinders allow for separate regulation of the approach stroke and power stroke, which allows for more complete control over the process without the need for cylinder reconfiguration.
  • Higher Retract Force: Since our cylinders generate greater retract forces, they can accommodate the attachment of heavier tooling.
  • No Stored Energy: Our cylinders do not use mechanical springs to move the pistons, which can break and hinder/halt operations. There are no unexpected motions from stored energy in HyperCyl cylinders.
  • Better Cost Savings: Our cylinders consume less air than other pneumatic cylinders. Our cylinders take up less space, generate less heat and noise, and cost less to purchase than a hydraulic cylinder and power unit. Additionally, they offer faster operational speeds and a smaller risk of leakage.

All of these qualities translate to lower investment, operational, and/or maintenance costs.

Source Hydra-Pneumatic Cylinders from HyperCyl

Since 1994, we’ve helped our customers determine the force and stroke requirements for their applications to help them design and purchase the right equipment for their needs. By evaluating their parts with our in-house equipment, we help identify the forces needed, and which actuator is best suited for their assembly, piercing, or forming application. All supplied materials are accompanied by complete evaluation documentation and reporting. We also offer access to an extensive database of hundreds of previous assembly and forming applications for examples of our capabilities.

To learn more about our product solutions and how they can benefit your assembly or forming application, contact us today. To discuss your application requirements with one of our experts, request a quote.