Blog Rss

How Gas Charged Struts Work and How to Specify the Right Force

Mon, 05 Oct 2026 00:00:00 +0000

Gas-charged struts—also called gas springs or gas shocks—make lids, doors, hatches, and access panels easier to lift and control. Yet choosing based on force rating alone often leads to poor opening feel, weak hold-open performance, damaged mounting points, or a shorter service life.

A reliable specification starts with the moving panel, hinge location, center of gravity, available mounting points, opening angle, and operating environment. Those inputs determine the torque the strut must counteract, and the leverage the installed geometry can provide.

Short answer: A gas-charged strut uses pressurized nitrogen acting on a piston to create an extension force. To size one correctly, calculate the panel’s torque about the hinge, divide by the gas spring’s perpendicular moment arm and the number of struts, then verify stroke, mounting points, temperature effects, end fittings, and safety margin with supplier data and prototype testing.

What Is A Gas-Charged Strut?

A gas-charged strut is a sealed cylinder containing pressurized nitrogen, a piston, a piston rod, seals, and a small quantity of oil. The pressure difference across the piston pushes the rod outward. Internal oil and flow passages can also provide damping near the end of travel, depending on the design and orientation.

In access applications, that extension force can offset part of a panel’s weight, help raise it, reduce closing speed, or hold it open. Gas-charged struts are available in different extended lengths, compressed lengths, strokes, force ratings, tube and rod sizes, end fittings, materials, and damping configurations.

Allegis supplies gas springs and gas struts with plastic or metal end connectors, multiple lengths and forces, and compatible mounting accessories for doors, lids, and hatches.

How do Gas Charged Struts Work?

The basic force relationship is pressure multiplied by effective piston area. In a finished gas spring, however, the force printed on the product or datasheet is the more useful starting point because seal friction, internal construction, and the manufacturer’s measurement method affect actual behavior.

Force also changes through the stroke. Compressing the rod reduces the gas volume and raises pressure, so the extension force typically increases from the extended position toward the compressed position. The difference between extension and compression measurements also includes friction. Manufacturers may identify measurement points such as F1 through F4; use the supplier’s definitions rather than assuming that every catalog reports force the same way.

Temperature matters because gas pressure changes with temperature. A colder gas spring generally produces less force; a warmer one generally produces more. The actual rate and allowable temperature range are product-specific, so use the selected manufacturer’s data for worst-case checks.

Why Nominal Force Is Not the Same as Lifting Capacity

The strut’s catalog force acts along its own centerline. What lifts or holds a hinged panel is the torque that this force creates the hinge. That torque depends on the perpendicular distance from the hinge to the strut’s line of action—not simply the angle of the strut relative to gravity.

For a simplified static check:

Sizing relationship: Required force per strut ≈ (panel weight force × horizontal distance from hinge to center of gravity) ÷ (number of struts × perpendicular distance from hinge to the strut’s line of action). Apply an application-appropriate margin only after the geometry is defined.

This relationship is useful for an initial estimate, but it does not replace a complete kinematic check. Both moment arms change as the panel moves. A design can feel acceptable at full open yet requires excessive hand force near closed—or it can open too aggressively because the chosen force or mounting point creates too much torque.

What Information Should You Gather Before Selecting a Gas Strut?

- Panel weight and weight distribution, including attached trim, windows, insulation, latches, and accessories

- Hinge-axis location and the panel center of gravity in the closed, intermediate, and open positions

- Desired opening angle, hold-open behavior, opening effort, and acceptable closing effort

- Available mounting zones on both the fixed structure and moving panel

- Required extended length, compressed length, usable stroke, and clearance throughout travel

- Number of struts and whether the application can tolerate asymmetric loading if one strut degrades

- Temperature range, corrosion exposure, washdown, dust, vibration, and expected operating cycles

- End-fitting style, stud or pin size, thread, bracket strength, and allowable articulation

These are also the inputs requested by professional sizing services. For example, Bansbach’s application form asks for panel weight, hinge-relative center of gravity, start and end angles, number of springs, possible mounting points, and connecting parts—evidence that geometry, not nominal force alone, drives selection.

What Information Should You Gather Before Selecting a Gas Strut?

Define the panel and operating objectives. Record the actual mass, dimensions, center of gravity, hinge axis, opening range, and desired user effort. Decide whether the strut should only assist motion or also hold the panel open.

Map the installation geometry. Establish feasible attachment zones, then model the strut’s line of action at closed, mid-stroke, and full-open positions. Confirm that the brackets and surrounding structure can carry the resulting loads.

Estimate the required torque and force. Calculate the panel torque about the hinge and divide it by the installed strut moment arm and number of struts. Evaluate multiple panel positions; the worst condition may not be full open.

Choose length and stroke. Verify that the strut reaches the required open position without topping out and fits the closed position without bottoming out. Preserve clearance for end fittings and articulation.

Check product-specific force behavior. Review the supplier’s force reference point, progression through stroke, tolerance, friction, damping, and temperature guidance. Do not transfer assumptions from one product family to another.

Specify mounting hardware and orientation. Match ball sockets, eyes, clevises, studs, and brackets. Avoid side loading and binding. Follow the manufacturer’s recommended orientation; many conventional gas springs are installed rod-down for seal lubrication and consistent damping, but the selected product’s instructions control.

Prototype and validate. Test opening effort, closing effort, hold-open stability, clearances, bracket deflection, temperature extremes, and repeated cycling. Adjust force or mounting geometry based on measured results before releasing the design.

How Mounting Geometry Changes Performance

Moving an attachment point can change performance as much as changing the force rating. Increasing the perpendicular moment arm generally increases the torque delivered by a given strut. Moving the panel-side attachment farther from the hinge can also change the required stroke and how assistance builds through the opening path.

Geometry therefore becomes a tuning tool. If a panel is hard to start opening but becomes too energetic near the top, increasing nominal force may worsen the problem. Revising attachment locations may produce a more balanced torque curve without overloading the panel or brackets.

Always check interference through the entire sweep. A layout that works in two static positions can still bind, over-articulate an end fitting, contact a hinge or latch, or push the gas spring beyond its compressed length between those positions. Customizable Form.

Common Gas Strut Selection Mistakes

HINGE → CENTER OF GRAVITY → STRUT MOUNTING POINT → FORCE DIRECTION

- Treating pounds-force or newtons as the weight a strut can directly lift
- Using a simple cosine correction without calculating torque about the hinge.
- Sizing only at the fully open position and ignoring opening and closing effort elsewhere
- Selecting stroke before confirming both mounting points and the complete motion path
- Ignoring force progression, tolerance, friction, damping, and temperature effects
- Using rigid or mismatched end fittings that introduce side load or binding
- Assuming a higher force rating is automatically safer; excessive force can make closing difficult and increase structural loads
- Releasing a production design without testing representative hardware and environmental conditions

What Should an OEM Gas Strut Specification Include?

A useful drawing, RFQ, or bill-of-materials specification should be defined as a catalog of force. And include:

- Extended length, compressed length, stroke, and dimensional tolerances
- Nominal force, measurement point, force tolerance, and any progression requirement
- End fittings, threads, studs, brackets, materials, finishes, and articulation requirements
- Required mounting orientation and prohibited side load or misalignment
- Operating and storage temperature ranges plus corrosion or washdown requirements
- Damping behavior, opening and closing effort targets, and hold-open criteria
- Cycle-life target, test conditions, force-retention limit, inspection method, and traceability requirements
- Applicable quality documentation and change-notification expectations

For production programs, also evaluate lead time, minimum order quantity, batch consistency, service-part availability, and whether standardized end fittings or force families can reduce sourcing risk. Quality requirements such as PPAP or industry-specific certifications should be applied when the program requires them—not assumed for every application.

How Should You Validate a Gas-Charged Strut Application?

Start with a representative prototype using production-intent hinges, brackets, fasteners, seals, and panel mass. Measure hand force and movement at several points, not only at open and closed. Verify that the panel remains stable where required and does not rise or close unexpectedly.

Then test the conditions most likely to change performance: low and high temperature, tolerance extremes, repeated cycling, vibration, contamination, and corrosion exposure. Inspect attachment points for deformation and the strut for leakage, binding, loss of force, or inconsistent damping. Acceptance criteria should be measurable and tied to the application’s risk.

Frequently Asked Questions About Gas-Charged Struts

Are gas-charged struts and gas springs the same thing?

In most industrial and automotive contexts, yes. “Gas strut,” “gas spring,” and sometimes “gas shock” are used for the same general product category. Product designs vary, so the datasheet—not the name—should define force, damping, dimensions, and mounting requirements.

How is gas strut force measured?

Gas strut force is normally stated in newtons or pounds-force at a defined position and test condition. Because force changes through the stroke and with friction and temperature, confirm the manufacturer’s measurement points, tolerance, and reference temperature.

Can you size a gas strut from the lid weight alone?

No. Lid weight is only one input. Correct sizing also requires hinge location, center of gravity, mounting points, opening range, number of struts, stroke, temperature range, and the desired opening and closing effort.

Should a gas strut be mounted rod-down?

Many conventional gas springs are mounted with the rod pointing downward in the closed position to support seal lubrication and damping. Some products and applications differ, so always follow the selected manufacturer’s installation instructions.

Is a stronger gas strut always better?

No. Too much force can make a lid difficult to close, cause abrupt opening, overload brackets or panels, and create an unsafe motion profile. The best choice provides the required assistance and hold-open torque with controlled effort throughout travel.

Get Help Selecting Gas-Charged Struts

The right gas-charged strut is a system decision: force, length, stroke, mounting geometry, end fittings, environment, and validation all work together. Allegis Corporation can help OEM teams evaluate standard gas struts, accessories, and application constraints before a design moves into production.

Explore Allegis gas springs and accessories or contact the Allegis team to discuss your application.

Preparedness Starts with Access

Mon, 24 Aug 2026 00:00:00 +0000

Preparedness is built before the sirens, through practical knowledge, thoughtful planning, and equipment that is ready when people need it. Governor's Fire Prevention Day brings those ideas to life for Minnesota families through hands-on education and demonstrations. 

We are proud to support  Governor's Fire Prevention Day  at the 2026 Minnesota State Fair on Friday, August 28. This year, Allegis is sponsoring the red fire helmets given to kids during the event. The helmets are a familiar part of the day and a visible reminder that fire-safety learning can start early. 

Readiness Happens in Small Moments

An emergency response vehicle brings together many interconnected components, but a crew experiences that complexity through a smaller set of recurring moments: a compartment opens, a drawer extends, breathing equipment is reached, a pump panel is serviced, or a controlled-storage opening is secured. Each moment begins at an access point. 

That is why Allegis does not view emergency-vehicle access hardware as a collection of isolated parts. A latch works with a striker and mounting structure. A hinge or slide defines motion. A handle connects the user to the mechanism. Gas springs and door assists can help manage movement. Seals, fasteners, panel geometry , and installation complete the interface. The user experiences the system, not the catalog categories behind it.

Five Jobs, One Access System 

Across compartments, drawers, covers, service panels, and body openings, access hardware can serve five recurring jobs. The jobs overlap, and each depends on the complete access system rather than one component working alone. 

Reach:  Make equipment, controls , or service areas usable for the intended person. Opening size is only the beginning; hand position, gloves, visibility, approach angle, equipment-clearance paths and adjacent obstructions also shape successful access.

Secure:  Hold the intended closed, retained or access-controlled state. The latch, striker, handle or release, panel stiffness, alignment and user feedback must work  together, so the system reaches and communicates the intended state.

Control:  Guide to motion, effort and position as a door, cover, drawer or tray opens and closes. Hinges, slides, gas springs, stays and other assists must be considered with the moving mass, geometry, mounting structure and user interaction.

Protect:  Manage the interface around the opening and its contents. Seals, compression, panel and frame stiffness, drainage, installation , and materials all influence how the completed system responds to environmental and mechanical exposure.

Service:  Keep the access point inspectable, adjustable, identifiable, and supportable over its working life. Technicians need clear replacement information, accessible fasteners and adjustment points, and a controlled path for evaluating changes or alternates.

The balance between these five jobs changes by application. A frequently used equipment drawer, an exterior compartment door, and a removable service panel may share hardware categories, but they do not share identical requirements. 

Why it matters: Crews and technicians experience the complete access point in a real working moment, not the individual parts behind it. If one job is overlooked, an opening can be technically complete yet difficult to use, control, secure, protect, or maintain.  Considering all five jobs together helps OEM teams identify requirements and tradeoffs before selecting hardware. It also gives Allegis a clearer foundation for product, engineering, and supply-chain conversations. That connects directly to the spirit of Fire Prevention Day: readiness begins by understanding the full situation before the complete need. 

What Allegis Brings   

Our passion for access hardware comes from understanding those relationships. Allegis brings a broad portfolio of latches, handles, hinges, drawer slides, gas springs, door assists, sealing profiles , and related hardware together with application conversations, engineering and prototyping support, and supply chain services. We help OEM teams frame the access points, examine interfaces, and identify practical product and production paths. 

That support does not replace application-specific engineering. Final product selection and completed vehicle validation remain with the OEM and other qualified project resources. Our role is to contribute focused access-hardware knowledge and ask the questions that help teams make better-informed decisions. 

Why We Support Fire Prevention Day 

Fire Prevention Day reflects the same values that guide our work: make important information accessible, prepare before the moment of need , and respect the people who rely on the result. Sponsoring the red helmets gives Allegis a tangible way to support fire-safety education, recognize the emergency services community, and help make the day memorable for kids. 

Join the Day

Governor's Fire Prevention Day takes place on Friday, August 28, 2026, at the Minnesota State Fair, with activities planned at Dan Patch Park, the North End, and DNR Park. Check the official daily schedule  before visiting for the latest times and locations. 

Supporting Fire Prevention Day at the Minnesota State Fair

Thu, 20 Aug 2026 00:00:00 +0000

Allegis is proud to sponsor a day of hands-on safety education at the Minnesota State Fair.

The best systems work because every part has a role.

That is true for fire prevention. It depends on people, preparation, equipment, and practical knowledge working together before an emergency happens.

Fire prevention starts with knowing how to reduce everyday hazards, escape safely, use a fire extinguisher, and prepare a household for the unexpected.

That is why Allegis is proud to support Governor's Fire Prevention Day at the 2026 Minnesota State Fair on Friday, August 28. This year, Allegis is sponsoring the red fire helmets given to kids during the event.

Presented by the Governor's Council on Fire Prevention and Control, the annual event brings fire-service organizations and public-safety educators together with fairgoers for demonstrations and hands-on learning. Activities are planned across Dan Patch Park, the North End, and DNR Park.

Families can learn about fire-safe behavior, home escape, extinguisher use, and emergency preparedness while exploring developments in firefighting equipment and burn treatment. The familiar red helmets give kids a simple way to take the day's safety message with them. The State Fair's current program also includes vehicle-extraction demonstrations.

Why This Day Matters to Allegis?

Emergency crews depend on many systems working predictably in demanding conditions. Allegis is proud when the access hardware we supply becomes part of a vehicle that helps crews reach equipment, operate compartments and drawers, secure gear, and service the vehicle. That contribution is one small part of the broader readiness that supports the communities those crews serve.

Consistency and reliability are not created by one component or a catalog label. They depend on the complete access point: the latch and striker, hinge or slide, handle, motion control, seal, panel and supporting structure, installation, adjustment and maintenance. Each component must be matched to the opening's specific duty and validated as part of the installed system.

Ergonomics is part of that responsibility. Access hardware should be selected around the actual task and the people performing it, including how they reach, grip and operate an opening while wearing gloves or other protective equipment. The weight and movement of a door, cover or drawer, along with clearance, visibility, and potential pinch points, should also be considered.

When access hardware is thoughtfully selected for its specific duty and properly integrated into the completed vehicle, it can support more consistent, predictable interaction and help reduce unnecessary physical strain or exposure to avoidable hazards. It is one part of creating equipment that helps crews do demanding work effectively. Final component selection and completed-vehicle validation remain with the OEM and other qualified project resources.

That is why this day matters to Allegis. Our products are only one small part of a much larger emergency-response system, but we take pride in supporting the people whose work protects our communities. Sponsoring the children’s red helmets extends that commitment beyond the vehicle by supporting prevention education for families and recognizing the crews and emergency personnel who accept risk in service to others. When equipment, training, and prevention knowledge work together, communities are better prepared.

Join the Day

Governor's Fire Prevention Day takes place on Friday, August 28, 2026, at the Minnesota State Fair. Check the official daily schedule before your visit for the latest times and locations.

Gas Springs in Industrial Equipment: How to Specify Force, Stroke, and Mounting

Thu, 13 Aug 2026 00:00:00 +0000

An industrial lid that will not stay open is a safety and productivity problem. A lid that opens too aggressively or refuses to close is also a problem. The difference often comes down to how the gas spring was specified and mounted.

Allegis gas springs - also called gas struts or gas shocks - are pressurized supports designed to assist the opening of doors, lids, hatches, and access panels. Selecting one requires more than matching the panel weight to a force value. The hinge position, center of gravity, mounting points, stroke, extended and compressed lengths, end fittings, operating temperature, and duty cycle all affect performance.

THE QUICK ANSWER

Specify a gas spring by calculating the torque created by the lid about its hinge, choosing mounting points that provide the required moment arm through the motion, and then confirming force, stroke, compressed length, extended length, end fittings, orientation, environment, and cycle life with the product data and a representative test.

What is a Gas Spring?

Allegis gas springs use compressed gas to generate extension force, helping lift and hold an industrial panel open. Allegis offers gas springs in a range of lengths and forces, with compatible ball studs, brackets, and accessories for application-specific mounting.

A gas spring is not specified the same way as a conventional coil spring. A coil spring is commonly described by a spring rate, k, in force per unit of deflection. A gas spring is usually selected based on its nominal extension force under defined conditions, along with its force progression, stroke, and installed geometry. Product drawings and supplier data remain the controlling source for a specific part.

Start With the Application, Not the Catalog

Before selecting a part number, document the mechanism and its operating conditions. For a hinged door or lid, collect the following inputs:

- Panel weight and center-of-gravity location.
- Hinge-axis location and the required opening angle.
- Available mounting zones on the fixed structure and moving panel.
- Required opening assistance, hold-open behavior, and acceptable closing effort.
- Clearance for the gas spring body, rod, brackets, and adjacent components through the full sweep.
- Operating temperature, corrosion exposure, washdown chemicals, vibration, and expected cycles.
- This information defines the load path. Without it, a force value alone cannot predict whether the lid will open smoothly, stay open, or close with acceptable effort.

How to Calculate the Required Gas Spring Force

For a hinged panel, begin with torque about the hinge rather than dividing panel weight by travel. At a given panel angle, the gravitational torque is approximately:

CORE RELATIONSHIP

Panel torque = panel weight x horizontal distance from the hinge to the panel center of gravity. Required gas-spring force is then based on that torque divided by the gas spring’s effective perpendicular moment arm. If two springs share the load, divide the required total force between them before applying appropriate design allowances.

Because the moment arm changes as the lid moves, evaluate more than one position. The most demanding point may be near closed, where the gas spring has limited leverage, or near open, where hold-open stability matters. A CAD motion study or a simple geometry model can reveal the force and clearance envelope.

A practical force-sizing sequence

1. Calculate the panel torque at critical positions, including near closed, mid-travel, and fully open.
2. Determine the perpendicular distance from the gas spring line of action to the hinge at each position.
3. Calculate the total gas-spring force needed to balance the torque at those positions.
4. Account for the number of springs, friction, desired hand force, tolerances, temperature effects, and dynamic loading.
5. Compare the result with the manufacturer’s force data and progression curve, then test the selected configuration.

Avoid adding multiple safety factors without understanding their effect. Excess force can make a panel difficult to close, overload brackets, or cause rapid opening. The appropriate allowance depends on the mechanism, consequence of failure, and verified supplier tolerances.

How to Specify Stroke and Installed Length

Stroke is the distance the rod travels between the extended and compressed positions. It must accommodate the change in distance between the two mounting points as the panel moves. The selected gas spring must also fit at both ends of travel: it cannot be longer than the available mounting distance when open or shorter than the required compressed distance when closed.

Dimension	What to verify	Common failure mode
Extended Length	Fits between mounting centers at the required open angle	Panel cannot reach the required opening angle
Compressed Length	Remains longer than the closed mounting-center distance with margin	Gas spring bottoms out before the panel closes
Stroke	Covers the change in mounting-center distance	Insufficient travel or unused, poorly controlled travel
Clearance Envelope	Body, rod, and fittings clear nearby parts through the sweep	Interference, side loading, or damaged rod/seal

Do not use the gas spring as the mechanical end stop unless the product and application are explicitly designed for that function. Provide appropriate stops in the mechanism and preserve margin for bracket tolerance, panel flex, gasket compression, and assembly variation.

Choose Mounting Points Before Finalizing Force

Mounting geometry controls leverage. Moving a bracket a small distance can materially change opening assistance, closing effort, and hold-open behavior. Position the brackets so the gas spring remains within its allowable angular range and does not experience side load.

- Check the line of action at closed, mid-travel, and open positions.
- Confirm that brackets and attachment structure can carry the peak load with suitable margin.
- Keep left and right mounting points symmetric when using two springs to reduce twisting.
- Model manufacturing tolerances and verify that the mechanism cannot over-travel the spring.
- Use end fittings that accommodate the required angular movement without binding.

End Fittings and Accessories

Ball-stud fittings are common because they allow angular movement as the lid rotates. Eyelets and clevis-style connections can provide a direct, robust joint when the geometry is controlled. The best choice depends on available space, expected articulation, pin size, retention method, corrosion exposure, and service access.

Treat the gas spring and its hardware as a system. Verify thread size, attachment method, bracket orientation, material compatibility, and the load capacity of every connection. A correctly sized gas spring can still fail in service if a bracket flexes or an end fitting binds.

Mounting Orientation and Temperature

Mounting orientation can affect lubrication and damping behavior. Many standard gas springs are installed with the rod pointing downward in the closed position so internal oil remains near the rod seal and end-of-stroke damping works as intended. However, requirements vary by product design and motion path. Follow the instructions for the selected Allegis part rather than applying one universal rule.

Gas pressure changes with temperature, so extension force can vary across the operating range. Low temperature can reduce available force, while high temperature can increase it. Seals, lubricants, coatings, and adjacent components must also be compatible with the environment. Use the product data to establish the allowable temperature range and validate performance at the application extremes.

Material and Environmental Selection

Start with the real exposure rather than selecting material by habit. A protected indoor enclosure may be well served by a coated steel gas spring. Outdoor, coastal, food-processing, washdown, or chemically exposed equipment may require a more corrosion-resistant construction and compatible mounting hardware.

Environment	Specification questions
Indoor/controlled	Are standard finishes compatible with humidity, cleaning, and expected life?
Outdoor/high humidity	What corrosion resistance is required for the body, rod, fittings, brackets, and fasteners?
Washdown/chemical	Are seals, lubricants, finishes, and accessories compatible with the cleaning agents and exposure frequency?
Hot or cold service	What force change and seal performance should be expected at minimum and maximum temperature?
High-cycle/vibration	What cycle-life evidence, retention features, inspection interval, and bracket reinforcement are required?

Do not assume that a stainless component makes the complete installation corrosion-proof. Mixed materials, trapped moisture, damaged finishes, and incompatible fasteners can create localized corrosion or premature wear..

Validate the Design Before Production

A representative mock-up is the fastest way to find geometry and usability problems before production tooling or a large purchase. Test the actual panel mass, center of gravity, hinges, seals, brackets, and installation orientation whenever possible.

Acceptance item	Example verification
Opening behavior	The panel begins to open predictably and does not exceed the acceptable hand-control limit.
Hold-open performance	Panel remains at the required open position under the defined static and disturbance loads.
Closing effort	The user can close the panel without exceeding the project’s ergonomic or operational limits.
End-of-travel margin	Mechanical stops, not unintended gas-spring bottoming or overextension, control the mechanism.
Alignment	No binding, rod contact, bracket twist, or visible side loading occurs through the full sweep.
Environmental performance	Function is confirmed at relevant temperature and exposure conditions.
Repeatability	Behavior remains within the specified range after the defined cycle test.

Gas Spring Specification Checklist

- Application: door, lid, hatch, access panel, or other assisted mechanism.
- Panel mass, center of gravity, hinge axis, opening angle, and number of springs.
- Required extension force and acceptable opening/closing hand force.
- Stroke, extended length, compressed length, and mounting-center dimensions.
- Fixed and moving bracket locations, end fittings, fasteners, and articulation range.
- Orientation, clearance envelope, mechanical stops, and tolerance stack-up.
- Temperature range, corrosion/chemical exposure, vibration, and cycle target.
- Inspection, replacement access, supplier drawing, and qualification criteria.

When to Involve Allegis

Bring Allegis into the project early when the panel geometry is constrained, the load changes during motion, the environment is severe, or the application requires custom brackets, materials, force, or validation support. Early review can narrow the product range, identify missing inputs, and reduce late-stage redesign.

Explore Allegis gas springs or contact Allegis to discuss the application with an access hardware specialist.

KEY TAKEAWAY

The right gas spring is the result of force and geometry working together. Calculate hinge torque, validate the changing moment arm, preserve stroke and end-of-travel margin, specify the complete mounting system, and test the representative assembly before production.

Frequently Asked Questions About Gas Springs

What are gas springs also called? Gas springs are also commonly called gas struts or gas shocks.

How do I calculate the force for a gas spring? Calculate the lid torque about the hinge, then divide by the gas spring’s effective perpendicular moment arm at the critical position. Account for the number of springs, desired hand force, tolerances, temperature, and dynamic loads before comparing the result with supplier data.

Is gas spring force the same as spring rate? Gas springs are commonly selected by nominal extension force, force progression, stroke, and geometry. A coil spring is commonly characterized by a linear spring rate. Use the manufacturer’s gas-spring data rather than treating the device as an ideal linear coil spring.

How much stroke does a gas spring need? The stroke must cover the change in distance between mounting centers through the required motion. Confirm both compressed and extended lengths, allow for tolerances, and prevent the gas spring from becoming the unintended mechanical stop.

Should a gas spring be mounted rod-down? Rod-down mounting is common for many standard gas springs because it can support seal lubrication and damping, but the correct orientation depends on the specific product and mechanism. Follow the selected part’s installation guidance.

Can I use two gas springs on one lid? Yes. Two springs can share the load and improve symmetry, but their mounting points must be aligned to avoid twisting the panel. Divide the total required support between the springs and validate the actual assembly.

How does temperature affect gas spring force? Gas pressure and extension force change with temperature. Confirm the specified operating range and test performance at the application’s relevant low and high temperatures.

What information does Allegis need to help select a gas spring? Provide panel weight, center of gravity, hinge position, opening angle, available mounting points, compressed and extended center distances, environment, desired behavior, and expected cycle life.

Allegis Returns for MN Governor’s Fire Prevention Day!

Thu, 13 Aug 2026 00:00:00 +0000

Allegis Returns as the Red Helmet Sponsor

for Governor’s Fire Prevention Day

Allegis is proud to return to the Governor’s Fire Prevention Day at the Minnesota State Fair on Friday, August 28, 2026!

As part of our sponsorship, Allegis is helping put the event’s iconic red children’s fire helmets into the hands (and on the heads!) of young fairgoers. It’s a fun takeaway with an important purpose: getting kids and families excited about fire safety and prevention.

Governor’s Fire Prevention Day brings together fire service professionals, public safety organizations, businesses, and volunteers for a full day of hands-on learning and demonstrations. Fairgoers can visit the Hot Zone Experience at Underwood Street & Murphy Avenue to learn lifesaving skills, see live demonstrations, explore firefighting equipment, and more.

Supporting the fire service community is a natural extension of what we do at Allegis. We provide rugged, reliable access hardware designed for Emergency Vehicles and equipment that firefighters and first responders depend on. From latches and handles to hinges, gasketing, and other critical access hardware components, our goal is simple: help the people who answer the call by providing access hardware they can count on, every time.

We’re proud to stand alongside Minnesota’s fire service community while helping to promote safety, education, and preparedness for future generations.

Look for the red helmets around the Fair on August 28—and keep an eye out for Allegis in the Hot Zone!

Learn more about Governor’s Fire Prevention Day

2026 AHR MEXICO Expo

Wed, 29 Jul 2026 00:00:00 +0000

2026 AHR MEXICO Expo

September 29 - October 1, 2026 | Guadalajara, Mexico

The most important Air Conditioning and Refrigeration Expo in Latin America is back in Guadalajara! As a host exhibitor, we are excited to return to AHR Expo México with our local partner Celator, based in Jalisco. We’ll have representatives from the US and Mexico on-site sharing our newest products for the industry. Thermobreak insulation is featured in the Show Preview of the new products and technologies, and we’ll also have the K3 from Klima-Flex on display.

We are expecting a great turnout, as the show floor has been expanded due to high interest and expected attendance. Register for free today and visit us at booth 2128. Check us out also on the show app and the interactive floor plan.

Electronic Access Configurability, Redesigned

Mon, 13 Jul 2026 00:00:00 +0000

Configurability used to mean a menu of variants. In today's access ecosystem, it means something deeper. What engineering teams should expect from their access partners has changed with it.

The Word Configurable

“Configurable” is one of the most frequently used words in electronic access control. It appears in nearly every product brief, supplier presentation, and capability statement in the category. It's also one of the least defined.

The same term is used for very different realities. For one supplier, the configurable menu includes three keying options. For another, it is a custom-engineering effort with long lead times. Third, it means firmware-level reconfiguration of hardware already in inventory. The word is overloaded, and its meaning depends entirely on context.

This wouldn't matter much if the requirements behind the word hadn't changed. They have. Industrial equipment is being rebuilt around connectivity, mobile management, building-system integration, audit visibility, and faster lifecycle expectations. The access control inside that equipment isn't a key lock anymore. It's a system that has to flex across hardware, software, integration, and lifecycle. The bar for what “configurable” should mean has risen with the equipment around it.

What follows is a working definition for engineering teams who want a sharper test to apply when an access partner uses the word.

Why this matters now

- The shift driving this redefinition isn't access control. It's industrial equipment.

OEMs are rebuilding their products around capabilities that weren't expected a decade ago. Connected operation. Mobile commissioning. Audit trails for compliance and service. Integration with building management systems and customer ACS platforms. Cloud-managed permissions. Product platforms that scale across applications. Industry analysts increasingly cite serviceability, remote diagnostics, and lifecycle management as core OEM design requirements. Aftermarket service economics depends on it. The product itself is becoming a system, and access control is part of that system.

When access is part of a system, the engineering decisions look different. You aren't picking a lock anymore. You're choosing how authentication works, where it lives, what data it generates, how it integrates with the rest of the product, and how it evolves over the product's lifecycle. “Configurable” now has to cover all of that, not just the hardware variant.

This perspective comes from how we approach electronic access work at Allegis and from the partnership we recently launched with Camlock Systems. Camlock is an established electronic access specialist. They combine global engineering depth with US-stocked product for fast lead times. Their configurable platforms have been engineered into industrial equipment across many categories, and their portfolio of mechanical, electronic, and software-based products was built around the kind of configurability we'll describe below. Allegis brings the consultative engineering partnership that puts those platforms to work inside customer design cycles. Together, we're built for the kind of access modernization today's product redesigns require.

Five Dimensions of Redefined Configurability

	1. Architectural, not catalog-level. Configurability used to mean choosing a variant from a list. Pick your keying scheme, pick your finish, pick your security tier. In a modern access platform, configurability is architectural. The product is engineered to bend within proven platforms, and the variants live in the platform's design rather than in a catalog matrix. The strongest signal of this is when configurations can be applied to existing inventory via firmware updates, rather than requiring custom engineering or extended lead times.
	2. Hardware and software, together. Configurability used to be a hardware story. A different lock, a different finish, a different latch geometry. In a modern access system, hardware is half of what gets configured, and sometimes it's the smaller half. Firmware behavior, user permissions, access policies, audit configuration, mobile experience, and integration depth are all now configuration decisions. A configurable access platform isn't just one whose hardware varies. It's one whose software, permissions, and policies vary too, configured per application without bespoke development.
	3. Across the lifecycle, not just at the order. Configurability used to be set at the order and locked in. The choice was made, the part shipped, and any later change was part of a replacement program. In a modern access system, configuration persists through the product's life. Permissions get adjusted in the field. Audit policies change as the operator's compliance requirements shift. Integration paths can be redirected without re-engineering the access architecture. Hardware itself can be reconfigured through firmware updates from stock. The configuration the customer received on day one isn't necessarily the one they're running on day five hundred.
	4. System-aware, not component-only. Configurability used to mean configuring a part: a lock with these options, in this form factor, with this keying. In a modern access system, the configuration spans the way it integrates with everything around it: the customer's BMS, their third-party access control platform, their mobile management ecosystem, and their cloud back-end. Configurable means configurable in context. The access system has to fit into a wider operational architecture, and the configuration includes how it plugs into that architecture.
	5. Engineered, not transactional. Configurability used to be a transaction. A checkbox on an order form, an option in a product configurator. In a modern access system, the configuration is a design conversation, and that conversation often happens before the specification is locked. Configuration decisions get made jointly between the OEM's engineering team and the access partner, with both sides contributing input on what the application actually needs and what the platform can flex to accommodate. The partner isn't a supplier responding to a spec. They're an engineering participant in forming it.

This Looks Like in Practice

Picture an engineering team modernizing a commercial HVAC unit. The product is being rebuilt around connected operation: mobile commissioning, BMS integration, remote diagnostics, audit trails for technicians and service partners. The access points on the product are part of the redesign.

The access decisions, viewed through the new definition of configurable, look like this. Some access points stay simple: in-stock product, configured at the order with a specific keying scheme and security tier. Others need more. The main service panels require mobile authentication, detailed audit logging, and integration with the customer's existing access control platform. That requires a configurable platform with both adaptable hardware and software. It also needs to be reconfigurable from inventory through firmware updates rather than custom development. Camlock Systems' CAMACTIVE platform is a wireless access control system with cloud-managed permissions, audit logging, and API integration. It's built to meet these requirements, and it's the kind of system Allegis brings to projects like this.

As the product line evolves, new variants enter without redesigning the access architecture, because the platform is built to flex. Permissions and audit policies are adjusted through the product's life as service models change. Integration paths can be redirected when the customer's BMS is upgraded. Throughout, the access partner participates in the engineering conversation, not as a supplier filling an order but as a contributor shaping what the access system needs to do.

The result: an access system that fits the product, integrates with the customer's ecosystem, develops with the product line, and stays configurable through its life. All five dimensions of configurability are working at once. This is what configurable should mean now.

What Engineering Teams Should Ask

When an access partner uses the word “configurable,” there are better questions to ask than there used to be. Five worth keeping in mind:

- - Is configurability architectural or catalog-level? If a partner can't show how configurations live in the platform, not just in part numbers, the claim is thin.
  - Does it cover software as well as hardware? If a partner talks about variants but not about permissions, audit, integration, and policies, they're describing yesterday's configurability.
  - Can the product be reconfigured after it ships? Or is the configuration locked to the order? Modern access systems should support lifecycle reconfiguration without re-engineering.
  - How does it integrate with the wider system? Configurable should include configurable in context. The access system must fit into the customer's BMS, mobile platform, and third-party tools.
  - Is the configuration designed or ordered? The strongest partnerships engineer the configuration alongside the customer, early in the design cycle, not after specification.

The answers separate partners who use the word 'configurable' from those who deliver what it should mean.

Closing

Industrial equipment is being rebuilt around capabilities that demand more from electronic access than it used to. The word “configurable” can be useful when it represents a sharp claim about a real capability. Or it can keep doing the work of a hundred different meanings while delivering only a few of them.

The engineering teams getting the most out of their access partnerships are the ones holding the world to a higher standard. That higher standard is what configurability should mean now. It's the working definition we use at Allegis when Camlock approaches an OEM redesign project, and it's a standard any engineering team can apply as electronic access becomes more central to how industrial equipment competes.

Special Olympics USA Games hosted in Twin Cities

Wed, 24 Jun 2026 00:00:00 +0000

2026 Special Olympics USA Games

Allegis Corporation (Minneapolis, MN). We're honored to support Special Olympics athletes by helping Team Oklahoma travel to the 2026 Special Olympics USA Games in Minnesota. As thousands of athletes from across the country gather to compete, celebrate achievement, and inspire inclusion, we're proud to play a small part in helping these incredible competitors get there.

For years, Allegis has been proud to support Special Olympics teams with travel to major competitions, and we're excited to continue that tradition by helping Team Oklahoma make their way to Minnesota.

This year's Games are especially meaningful for us. Hosted right here in Minnesota, home to Allegis headquarters, the Games will bring together more than 3,000 athletes from all 50 states to showcase the power of determination, inclusion, and community. It's exciting to see our home state serve as the backdrop for such an inspiring national event, and we're honored to help make the journey possible for Team Oklahoma.

About Allegis

Allegis provides engineered access solutions for industrial OEMs and enclosure manufacturers, helping customers standardize, scale, and protect critical access points across power, infrastructure, and equipment markets.

Meet Thermobreak: A New Way to Think About Engineered Insulation

Wed, 03 Jun 2026 00:00:00 +0000

The Hidden System Inside Every Emergency Vehicle

Fri, 17 Apr 2026 00:00:00 +0000

There is a moment that repeats itself across every emergency response. A fire engine pulls up after sustained high-load driving. The crew has been operating in heat, noise, and pressure. An ambulance stabilizes a patient while equipment hums and environmental conditions shift outside the vehicle. A rescue unit idles on scene, lights drawing power, systems running, air moving through a confined space designed to protect both people and equipment.

What happens inside the vehicle during those moments is not incidental. It is engineered. Over the past decade, emergency vehicle design has moved toward a more integrated view of performance. The cab and patient compartments are no longer treated as passive interiors. They are regulated environments that must manage heat from engines and equipment and maintain stable interior temperatures during long idle periods. They must also limit sustained exposure to high decibel levels. They must also control contamination. This includes preventing harmful particles, pathogens, and exhaust from entering the space, as well as ensuring anything that does enter, is effectively removed.

Insulation sits at the center of that system. In fire apparatus and rescue vehicles, insulation is layered through the engine compartment, firewall, floors, walls, and roof. Each layer serves multiple roles at once. Materials absorb airborne noise, block transmitted vibration, and shield occupants from heat generated by engines, exhaust systems, and onboard equipment. In ambulances, insulation becomes structural. Walls, ceilings, and floors are built with integrated foam cores and sealed skins to maintain thermal control for patient care while supporting HVAC efficiency over extended duty cycles.

The priority is not about comfort in the traditional sense but is about maintaining a stable operating environment in conditions that exceed typical commercial use. Noise exposure within the apparatus has been documented at levels that pose long-term health risks to firefighters and other first responders, particularly during extended operations and transports. At the same time, clean-cab initiatives are reshaping interior design across the full range of emergency response vehicles. Departments are now prioritizing contamination control, pushing manufacturers toward nonporous, easy-to-clean surfaces that limit the absorption of and exposure to carcinogens. The parallel concerns, acoustic exposure and contamination, are influencing how interior materials are selected and integrated. The surfaces in these vehicles must withstand rigorous cleaning protocols without degrading over time, but they also must contribute to noise reduction and environmental control. The need for insulation systems that perform across multiple dimensions without compromising durability or hygiene is a defining requirement in the engineering of modern emergency vehicles. Thermal loads continue to increase as emergency vehicles carry more electronics, lighting, and power systems, while upcoming emissions changes are altering engine packaging and heat distribution. The interior and under-hood environment must perform under stress, remain consistent over time, and integrate cleanly into increasingly complex builds. Insulation is no longer a secondary consideration. It is fundamental to how emergency vehicles function.

Where the Opportunity Is Emerging

The shift underway in emergency vehicle design is structural. Modern apparatus must manage multiple competing requirements within the same physical space. Crew comfort is closely tied to the management of noise exposure and long-term hearing health. Thermal control is tied to HVAC efficiency. Acoustic performance and contamination control must both be addressed, with neither taking precedence. Electrical evolution introduces new heat sources and new sensitivities, while manufacturing teams need solutions that install cleanly, repeat consistently, and preserve structural integrity and long-term performance under changing design conditions.

The industry is moving toward multifunction protection systems that operate across these variables simultaneously. That means materials and insulation strategies are being evaluated differently. Performance is measured over time, not just at installation. Moisture resistance becomes critical in environments where condensation and washdown cycles are routine. Acoustic materials must maintain integrity without introducing contamination hazards. Thermal insulation must support energy efficiency during extended idle periods, when HVAC systems carry a greater share of the load.

At the same time, the physical realities of manufacturing remain constant. Emergency response vehicles are built in low volumes with high variability, and installation time directly impacts throughput. Materials that require multiple layers, additional barriers, or complex handling steps introduce friction into the production process. Engineers and operations teams are looking for ways to simplify without jeopardizing performance.

The market is moving toward a more integrated approach to environmental control inside the vehicle, where thermal performance, acoustic control, moisture management, and manufacturability are treated as interdependent design elements rather than separate decisions.

Thermobreak® is a high-performance insulation solution designed to improve thermal efficiency, reduce moisture-related issues, and enhance overall system performance across a wide range of applications.

A Material Response to a System-Level Problem

This is where high-performance insulation solutions like Thermobreak® come into the conversation. Thermobreak is built on a closed-cell polyolefin structure designed to deliver stable thermal performance while resisting water absorption and vapor transmission, two factors that directly affect long-term reliability in vehicle environments. In addition to resisting water absorption and vapor transmission, Thermobreak is designed to withstand environmental exposure, maintaining performance through temperature swings, repeated cleaning, and decontamination cycles. The intentional design of Thermobreak makes it an ideal solution for emergency vehicles, delivering consistent performance in environments exposed to condensation, temperature swings, and regular cleaning cycles.

The material platform goes beyond thermal insulation alone. Thermobreak is offered as a system that includes thermo-acoustic and gasketing solutions, allowing engineers to select materials based on the specific demands of each zone within the vehicle. Acoustic variants are designed to reduce noise and vibration while retaining performance in the presence of moisture, avoiding degradation that can occur with more traditional materials. Performance consistency over time becomes a defining characteristic. Thermal conductivity remains stable without requiring additional vapor barriers, and water absorption remains below 0.1 percent by volume. Such stability supports predictable system behavior across years of service rather than only at initial installation.

Equally important is how the material integrates into manufacturing. With Allegis, Thermobreak is available in sheets and rolls, and can additionally be converted into pre-formed components, with optional facings and adhesive backings that simplify installation steps and improve repeatability, and support consistent manufacturing outcomes. In an environment where production efficiency and consistency are under pressure, integration matters as much as performance.

Where This Goes Next

Emergency vehicles are becoming more complex, more integrated, and more demanding environments for both people and systems. The interior is no longer just a space to occupy. It is a controlled environment that supports performance, safety, and long-term health. The materials that define that environment will continue to evolve alongside the vehicles themselves. For manufacturers navigating these changes, the conversation often starts with a specific problem, such as heat in the cab, noise during operation, condensation in enclosed spaces, or installation challenges on the production floor. The more valuable discussions connect those problems into a system-level approach.

At Allegis, that is where we thrive. As both a distributor and a converter, we help engineers and manufacturers translate performance requirements into material solutions that align with the realities of the application and production process. That includes access to the full Thermobreak® platform and the ability to adapt it into formats that integrate cleanly, install consistently, and scale across production. In emergency vehicles, performance is not abstract. It affects the people inside the cab, the patients in the back, and the crews who rely on that environment every day.

If insulation is part of that challenge, we are ready to help solve it.