In medical and furniture components, the locking gas springs is one of the most important elements. It is also called lockable gas struts, or locking gas shocks, with which users can adjust and securely fix the angle or height of the equipment. In other words, it plays a very significant role in realizing the ultimate comfort and safety benefit for users.
How Locking Gas Springs Work? Locking gas springs work via an internal valve:When the valve is closed, high-pressure gas is trapped so the spring locks firmly in place.When you press the release lever, the valve opens and the gas flows freely, allowing the spring to move and be adjusted to virtually any position.
In the following section, we will detail the specifications of our locking gas springs from a manufacturer’s perspective. Additionally, we will present their structural composition diagrams and manufacturing processes.
Precision-Engineered Locking Gas Springs Types
Depending on the specific design requirements and kinematic layouts of different applications, the mechanical characteristics of locking gas springs vary significantly. GASTAC bypasses standard catalog compromises to provide application-specific internal valving built strictly to your engineering prints.
Elastic Locking
The entire locking stroke operates within a pressurized nitrogen gas column rather than pure oil. When the valve closes, the compressed gas column acts as a deliberate, high-frequency shock absorber while maintaining the preset position.
Rigid Locking in Compression
The internal piston is completely submerged in oil when locked under downward pressure. Under heavy compression loads, it acts as a solid steel rod—completely unyielding.
Rigid Locking in Tension
The internal oil chamber shifts to the opposite side of the piston. When the spring is locked, it provides absolute resistance against outward pulling forces, ensuring the extended stroke cannot be forcefully compressed or deflected.
Locking Gas Spring with Release Button
A standard gas spring integrated with a specialized mechanical locking button mechanism. It automatically drops into a solid mechanical detent to freeze the stroke exclusively at the fully extended or fully compressed end-positions, requiring a manual button press to resume travel.
Gas Strut Safety Lock
Features an external, heavy-duty protective steel shroud or locking sleeve over the piston rod. In the event of sudden internal pressure failure or unexpected overload, the mechanical sleeve automatically mechanical-stops or manually locks to prevent accidental column compression or collapse.
GASTAC Locking Gas Springs
GASTAC’s premium series of locking gas springs is precision-engineered to deliver infinite height, pitch, or angle adjustment combined with unyielding, zero-drift position control.In complex mechanical sub-assemblies, a generic catalog standard is never enough. The true kinematic challenge lies at the mechanical pivots: a few millimeters of valve stroke change at the internal piston translates to degrees or inches of fluid, highly responsive motion on the end application.
How to read the Specifications of Locking Gas Springs
The universal locking gas springs generally have an outer tube with a diameter of Ø28mm and a piston rod with a diameter of 10Ømm (or custom cylinder/rod combinations based on load requirements).The cylinder end and the piston rod end are connected to the driving linkages, pivoting sub-assemblies, or structural frames of your application via customized end fittings.
- Rod Diameter: The thickness of the inner moving steel shaft, which determines the load support strength and prevents the spring from bending under pressure.
- Body Diameter: The thickness of the outer cylinder housing the internal nitrogen and oil, which dictates the physical space needed to install the spring.
- Extended Length: The absolute maximum total length when the spring is fully open, which dictates the highest position or angle your equipment can reach.
- Stroke: The actual functional travel distance the rod moves in and out, where a few millimeters of change translates to degrees of motion on your mechanism.
GASTAC Locking Gas Springs Specifications Range
As a critical component for height adjustment or tilt control, locking gas springs must be robust enough to withstand weight capacities exceeding 2,000 N (200 kg). Therefore, the diameters of both the piston rod and the steel cylinder are of paramount importance. To fulfill diverse market demands for varying load capacities, locking gas springs are categorized into five distinct types:
| Rod / Tube Dia. (mm) | Stroke Range (mm) | Max Extended Length (mm) | Rated Force Range (F1) | Primary Application Field |
|---|---|---|---|---|
| 10/22 | 20–200 | 100–500 | 50–350N | Automotive Recliners |
| 10/22 | 20–250 | 100–600 | 80–600N | Steering Columns, Treatment Tables |
| 10/26 | 30–300 | 150–700 | 100–800N | Medical Beds, Specialized Seating |
| 10/28 | 50–400 | 200–1000 | 200–1200N | Premium Hospital Furniture, Ergonomic Desks |
| 14/28 | 150–600 | 400–1350 | 150–2000N | Heavy Machinery, Industrial Access Hatches |
Series of GASTAC Lockings Gas Springs
Depending on the specific requirements of different applications, our locking gas springs are categorized into the following distinct series:
1. HS Series Locking Gas Springs for Hospital Stretchers
For ambulance stretcher OEMs, GASTAC’s HS series locking gas springs for hospital stretchers integrates seamlessly into X-frame chassis and backrest pivots to deliver absolute reliability in the field. The internal rigid hydraulic valve structure ensures zero mechanical drift, allowing stretchers to withstand heavy, high-frequency CPR compressions without yielding. Built for extreme medical environments, each unit features high-grade seals that repel blood and disinfectants while ensuring instantaneous, zero-latency locking responsiveness when it matters most.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| HS0602400450 | 10/22 | 60 | 240 | 200N - 450N | Rigid |
| HS0702500450 | 10/22 | 70 | 250 | 200N - 450N | Rigid |
| HS0802600450 | 10/22 | 80 | 260 | 200N - 450N | Rigid |
| HS0902700600 | 10/22 | 90 | 270 | 200N - 450N | Rigid |
| HS1003150600 | 10/28 | 100 | 315 | 300N - 600N | Rigid |
| HS1203550650 | 10/28 | 120 | 355 | 350N - 650N | Rigid |
| HS1303750650 | 10/28 | 130 | 375 | 350N - 650N | Rigid |
| HS1403950700 | 10/28 | 140 | 395 | 400N - 700N | Rigid |
| HS1504200700 | 10/28 | 150 | 420 | 400N - 700N | Rigid |
| HS1804901100 | 14/28 | 180 | 490 | 500N - 1100N | Rigid |
| HS2005301200 | 14/28 | 200 | 530 | 600N - 1200N | Rigid |
| HS2205701300 | 14/28 | 220 | 570 | 600N - 1300N | Rigid |
2. HS Series Locking Gas Springs for Overbed Tables
Designed for single-post cantilevered overbed tables, GASTAC’s OT series locking gas springs for overbed tables features an internally reinforced structure that withstands high eccentric forces when patients lean on tabletop edges. A specialized one-way override mechanism allows users to effortlessly lift the tabletop upward without engaging the release lever, while providing instant locking against downward pressure. Fully compatible with mainstream medical columns, this series guarantees zero-drift positioning and smooth height adjustment in an optimized, slim-profile housing.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| OT150375300 | 10/22 | 150 | 375 | 150N - 350N | Rigid |
| OT180435350 | 10/22 | 180 | 435 | 150N - 350N | Rigid |
| OT200475400 | 10/22 | 200 | 475 | 150N - 350N | Rigid |
| OT200515400 | 10/22 | 220 | 515 | 150N - 350N | Rigid |
| OT250575450 | 10/22 | 250 | 575 | 150N - 350N | Rigid |
| OT280635450 | 10/26 | 280 | 635 | 150N - 350N | Rigid |
| OT300675500 | 10/26 | 300 | 675 | 150N - 350N | Rigid |
| OT450980600 | 10/28 | 450 | 985 | 150N - 350N | Rigid |
3. PSD Series Locking Gas Springs for Pneumatic Standing Desks
Designed for dual-leg pneumatic desks, GASTAC’s PSD series locking gas springs for pneumatic standing desks synchronized Rigid Locking configurations are fully customized to match your specific OEM twin-telescoping column heights and desktop weight ratings. Built strictly to your engineering prints, these gas springs integrate seamlessly into proprietary dual-column chassis to eliminate side-to-side column binding and vertical sagging under heavy workloads. By micro-matching your exact stroke travel and counterbalance forces, this series ensures perfectly balanced, fluid lifting assist within restricted inner leg envelopes.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| PSD2000490600 | 10/28 | 200 | 490 | 300N-600N | Rigid |
| PSD2500590600 | 10/28 | 250 | 590 | 300N-600N | Rigid |
| PSD3000690600 | 10/28 | 300 | 690 | 300N-600N | Rigid |
| PSD3500790600 | 10/28 | 350 | 790 | 300N-600N | Rigid |
| PSD4000890600 | 10/28 | 400 | 890 | 300N-600N | Rigid |
| PSD4500990600 | 10/28 | 450 | 990 | 300N-600N | Rigid |
| PSD5001110600 | 10/28 | 500 | 1110 | 300N-600N | Rigid |
4. SDC Series Locking Gas Springs for Standing Desk Converters
Designed for standing desk converters, GASTAC’s SDC Series customized Rigid Locking configurations are built strictly to your prints to match specific OEM scissors-lift leverage ratios and load capacities. Integrating seamlessly with X-frame or Z-lift folding chassis, these high-force gas springs eliminate desktop wobbling and typing flex. By micro-matching your exact travel requirements, this series ensures rock-solid stability and fluid lifting assist while fitting perfectly within ultra-flat, restricted under-surface clearances.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| SDC060200400 | 10/22 | 60 | 200 | 150N - 400N | Rigid |
| SDC080240400 | 10/22 | 80 | 240 | 150N - 400N | Rigid |
| SDC100280400 | 10/22 | 100 | 280 | 150N - 400N | Rigid |
| SDC120320400 | 10/22 | 120 | 320 | 150N - 400N | Rigid |
| SDC150380400 | 10/22 | 150 | 380 | 150N - 400N | Rigid |
| SDC160405400 | 10/28 | 160 | 405 | 150N - 400N | Rigid |
| SDC180445400 | 10/28 | 180 | 445 | 150N - 400N | Rigid |
| SDC200485400 | 10/28 | 200 | 485 | 150N - 400N | Rigid |
5. WH Series Locking Gas Springs for Wheelchairs
Designed for tilt-in-space and rehabilitative wheelchairs, GASTAC’s WH series locking gas springs for wheelchairs customized Elastic Locking configurations are built strictly to your prints to match specific OEM frame geometries and tilt angles. Integrating seamlessly with proprietary seating mechanisms, these gas springs eliminate backrest play while utilizing a responsive nitrogen gas-cushion to isolate occupants from road vibrations. By micro-matching your exact travel requirements, this series delivers exceptional hydraulic damping comfort within a highly compact frame envelope.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| WH020120300 | 8/22 | 20 | 120 | 100N - 300N | Elastic |
| WH040160350 | 8/22 | 40 | 160 | 100N - 350N | Elastic |
| WH060205400 | 8/22 | 60 | 205 | 150N - 400N | Elastic |
| WH080245450 | 8/22 | 80 | 245 | 150N - 450N | Elastic |
| WH100285600 | 10/22 | 100 | 285 | 200N - 600N | Elastic |
| WH120325700 | 10/22 | 120 | 325 | 250N - 700N | Elastic |
| WH150395900 | 10/28 | 150 | 395 | 400N - 900N | Elastic |
6. TSW Series Locking Gas Springs for Tractor Tilt Steering Wheels
Designed for agricultural tractors and off-highway cabs, GASTAC’s customized Rigid Locking configurations are built strictly to your prints to match specific OEM chassis layouts and steering column geometries. Integrating seamlessly with heavy-duty steering mechanisms, these gas springs eliminate tilt backlash and wobbling under severe field vibrations. By micro-matching your exact travel requirements, this series ensures rock-solid hydraulic stability while fitting perfectly within restricted dashboard envelopes.
| OEM Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Vehicle Model |
|---|---|---|---|---|---|
| 87710003 | 10/28 | 50 | 245 | 420 N | Case IH / New Holland |
| AL222225 | 8/28 | 40 | 230 | 330 N | John Deere |
| 82036016 | 10/28 | 50 | 245 | 420 N | Case IH / New Holland |
| AL209275 | 8/28 | 140 | 205 | 350 N | John Deere |
| 7043810 | 10/28 | 50 | 240 | 420 N | Polaris RZR |
| RE151217 | 10/28 | 70 | 255 | 330 N | John Deere |
| RE50227 | 10/28 | 40 | 230 | 330 N | John Deere |
| RE152042 | 8/28 | 40 | 230 | 330 N | John Deere |
| 224357A1 | 10/28 | 65 | 355 | 200 N | Case IH |
| 7043261 | 10/28 | 50 | 240 | 330 N | Polaris RZR |
| 86522914 | 10/28 | 55 | 250 | 350 N | New Holland |
| 7044098 | 10/28 | 55 | 240 | 350 N | Polaris |
| AL150755 | 10/28 | 40 | 230 | 330 N | John Deere |
7. EW Series Locking Gas Springs for EVA Walkers
Designed for neuro-rehabilitation walkers, GASTAC’s EW series offers a rock-solid 50mm to 150mm stroke range to ensure precise height adjustment for forearm support pads. Integrating seamlessly with telescopic oval tubes, these gas springs utilize rigid hydraulic locking to eliminate sudden sagging and height flex when patients lean heavily for balance. This ensures zero-play stability and secure weight-bearing support within an ultra-slim vertical column profile.
| ID | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| EW050190250 | 10/22 | 50 | 190 | 150N - 250N | Rigid |
| EW080250400 | 10/22 | 80 | 250 | 200N - 400N | Rigid |
| EW100290450 | 10/22 | 100 | 290 | 250N - 450N | Rigid |
| EW120330500 | 10/22 | 120 | 330 | 300N - 500N | Rigid |
| EW120335600 | 10/28 | 120 | 335 | 400N - 600N | Rigid |
| EW150395700 | 10/28 | 150 | 395 | 500N - 700N | Rigid |
8. MB Series Locking Gas Springs for Massage Beds
Designed for professional spa and massage tables, GASTAC’s MB series offers a rock-solid 60mm to 180mm stroke range to ensure unyielding backrest stability under intense downward force. Engineered to maximize rigid hydraulic locking, these locking gas springs for massage beds eliminate all “spongy bouncing” and flexing during heavy bodywork while suppressing fluid-hissing noise. This guarantees quiet adjustment travel and rock-solid support within a compact bedframe profile.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| MB060220400 | 10/22 | 60 | 220 | 150N - 400N | Rigid |
| MB080260450 | 10/22 | 80 | 260 | 150N - 450N | Rigid |
| MB100315600 | 10/28 | 100 | 315 | 200N - 600N | Rigid |
| MB120355700 | 10/28 | 120 | 355 | 250N - 700N | Rigid |
| MB150420800 | 10/28 | 150 | 420 | 300N - 800N | Rigid |
| MB180480900 | 10/28 | 180 | 480 | 400N - 900N | Rigid |
9. MTS Series Locking Gas Springs for Movie Theater Seats
Designed for commercial cinema seating, GASTAC’s MTS series offers a robust 25mm to 100mm stroke range to deliver smooth backrest pitch adjustment through under-seat linkages. Fully compatible with global VIP cinema ironmongery and motion chassis, these gas springs maximize hydraulic damping to eliminate backrest wobble and sagging under heavy public use. This ensures highly responsive counter-balance stability within an exceptionally compact under-seat footprint.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| MTS025185600 | 8/22 | 25 | 185 | 100N - 600N | Elastic |
| MTS030195600 | 8/22 | 30 | 195 | 100N - 600N | Elastic |
| MTS035205600 | 8/22 | 35 | 205 | 100N - 600N | Elastic |
| MTS040215600 | 8/22 | 40 | 215 | 100N - 600N | Elastic |
| MTS045225600 | 8/22 | 45 | 225 | 100N - 600N | Elastic |
| MTS050235600 | 8/22 | 50 | 235 | 100N - 600N | Elastic |
| MTS055245600 | 8/22 | 55 | 245 | 100N - 600N | Elastic |
| MTS060255600 | 8/22 | 60 | 255 | 100N - 600N | Elastic |
| MTS065265600 | 8/22 | 65 | 265 | 100N - 600N | Elastic |
| MTS070275600 | 8/22 | 70 | 275 | 100N - 600N | Elastic |
| MTS075285600 | 8/22 | 75 | 285 | 100N - 600N | Elastic |
| MTS080295600 | 8/22 | 80 | 295 | 100N - 600N | Elastic |
| MTS085305600 | 8/22 | 85 | 305 | 100N - 600N | Elastic |
| MTS090315600 | 8/22 | 90 | 315 | 100N - 600N | Elastic |
| MTS095325600 | 8/22 | 95 | 325 | 100N - 600N | Elastic |
| MTS100335600 | 10/22 | 100 | 335 | 100N - 600N | Elastic |
10. BC Series Locking Gas Springs for Barber Chairs
Designed for professional barber and tattoo chairs, GASTAC’s BC series utilizes an advanced rigid-in-tension locking design to eliminate all linear play. Bypassing the elastic cushioning of standard furniture, these gas springs ensure the headrest and backrest remain rock-solid under high lateral styling loads. This delivers an unyielding, wobble-free platform for precise razor, clipper, and tattoo work.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| BC060230500 | 10/22 | 60 | 230 | 250N - 500N | Rigid |
| BC070255550 | 10/22 | 70 | 255 | 300N - 550N | Rigid |
| BC080280600 | 10/22 | 80 | 280 | 350N - 600N | Rigid |
| BC090305700 | 10/22 | 90 | 305 | 400N - 700N | Rigid |
| BC100330750 | 10/22 | 100 | 330 | 400N - 750N | Rigid |
11. RC Series Locking Gas Springs for Recliner Chairs
In residential upholstery, a few millimeters of stroke change at the mechanical pivot translates to degrees of smooth motion on the footrest and backrest. GASTAC RC series delivers an ultra-compact 15mm to 60mm stroke grid, masterfully calculated to sync with global standard recliner ironmongery (such as Leggett & Platt profiles). By minimizing the stroke and maximizing hydraulic control stability, we prevent ‘dead play’ and sagging in the linkage while maintaining a high F1 output in an incredibly small installation envelope.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| RC15120350 | 8/22 | 15 | 120 | 150N - 350N | Elastic |
| RC20130400 | 8/22 | 20 | 130 | 180N - 400N | Elastic |
| RC25140400 | 8/22 | 25 | 140 | 180N - 400N | Elastic |
| RC30150450 | 8/22 | 30 | 150 | 200N - 450N | Elastic |
| RC35160450 | 8/22 | 35 | 160 | 200N - 450N | Elastic |
| RC40175500 | 8/22 | 40 | 175 | 200N - 500N | Elastic |
| RC45185500 | 8/22 | 45 | 185 | 250N - 500N | Elastic |
| RC50195550 | 8/22 | 50 | 195 | 250N - 550N | Elastic |
| RC60215600 | 8/22 | 60 | 215 | 300N - 600N | Elastic |
12. MD Series Locking Gas Springs for Medical Deds
Designed for medical and hospital beds, GASTAC’s MD series features an advanced rigid-in-compression locking matrix to ensure the backrest or knee sections remain rock-solid under Safe Working Loads (SWL) up to 250kg. Fully optimized for ICU and bariatric profiling beds, the 50mm to 200mm precision stroke spectrum overcomes linkage leverage losses while enabling smooth, controlled emergency descent (CPR release compatibility). This guarantees zero-drift patient positioning and fluid adjustment within demanding clinical environments.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| MD0602200400 | 10/22 | 60 mm | 220 mm | 150N - 400N | Rigid |
| MD0802600450 | 10/22 | 80 mm | 260 mm | 150N - 450N | Rigid |
| MD1003000550 | 10/22 | 100 mm | 300 mm | 200N - 550N | Rigid |
| MD1203400600 | 10/22 | 120 mm | 340 mm | 250N - 600N | Rigid |
| MD1403850700 | 10/28 | 140 mm | 385 mm | 300N - 700N | Rigid |
| MD1604250800 | 10/28 | 160 mm | 425 mm | 300N - 800N | Rigid |
| MD1804650900 | 10/28 | 180 mm | 465 mm | 400N - 900N | Rigid |
| MD2005051000 | 10/28 | 200 mm | 505 mm | 400N - 1000N | Rigid |
13. ACS Series Locking Gas Springs for Amtrak Coach Seats
Designed for intercity rail and passenger coach seating, GASTAC’s ACS series delivers customized rigid locking configurations built strictly to your prints to match specific transit frames. These gas springs maximize hydraulic impact absorbency to eliminate “dead play” and structural rattling caused by constant track vibrations. By micro-matching your exact travel requirements, this series ensures smooth, infinite backrest recline and reliable counter-balance stability within tight back-shell clearances.
| GASTAC Part Number | Rod / Tube Dia. (mm) | Stroke (mm) | Extended Length (mm) | Force Range (F1) | Locking Type |
|---|---|---|---|---|---|
| ACS050185450 | 10/22 | 50 mm | 185 mm | 200N - 450N | Elastic |
| ACS060205500 | 10/22 | 60 mm | 205 mm | 200N - 500N | Elastic |
| ACS070225550 | 10/22 | 70 mm | 225 mm | 250N - 550N | Elastic |
| ACS080245600 | 10/22 | 80 mm | 245 mm | 250N - 600N | Elastic |
| ACS090265650 | 10/22 | 90 mm | 265 mm | 300N - 650N | Elastic |
| ACS100290700 | 10/22 | 100 mm | 290 mm | 300N - 700N | Elastic |
| ACS110340700 | 10/22 | 110 mm | 310 mm | 350N - 700N | Elastic |
| ACS120330750 | 10/22 | 120 mm | 330 mm | 350N - 750N | Elastic |
Structure of Locking Gas Springs
A locking gas spring achieves its controllable positioning through a specialized dual-chamber system separated by a valve mechanism. Unlike standard gas springs, it contains an internal valve rod running through a hollow piston rod, allowing users to lock the spring at any point along its stroke.
Hollow Piston Rod & Internal Release Pin
The piston rod is precision-ground and hollowed to house a solid steel release pin (actuator pin). When the external lever presses this pin, it pushes downward to open the internal valve.
Piston Assembly with Integrated Valve
The piston divides the pressure cylinder into two separate oil/gas chambers. It contains an internal valve sealed with specialized high-pressure rubber rings (O-rings) to control fluid migration.
Dual-Chamber Pressure Cylinder
Depending on the locking type (Rigid or Elastic), the cylinder is filled with high-pressure nitrogen (N2) gas for lifting force, paired with a specific volume of hydraulic oil for blocking and damping.
Guide and Seal Package
Located at the cylinder exit, a heavy-duty seal package (comprising lip seals, scrapers, and a guide bush) ensures zero gas leakage and perfect linear alignment under high side-loads.
For a better understanding of our locking gas spring technology, we present a cross-sectional structural diagram detailing the precision internal components engineered inside the cylinder.
Additionally, we have included a demonstration video to illustrate the exact mechanical function of the internal valve and fluid transfer during operation.
The Internal Structure of GASTAC Locking Gas Springs
Locking Gas Springs Sports Video
GASTAC Gas Springs Manufacturing Factory
The GASTAC manufacturing facility features a modern, clean, and highly organized industrial environment optimized for precision production. Inside our specialized workshops, advanced automated assembly lines run alongside climate-controlled testing areas, ensuring zero contamination during the critical sealing and fluid-filling stages. With smart floor layouts, strict dust-control protocols, and standard lean-manufacturing workflows, our factory environment is fully equipped to maintain absolute product consistency, clean room compatibility, and high-efficiency output for global B2B clients.
GASTAC Gas Springs Factory Environment
GASTAC Production Equipments
How are Gas Springs Produced?
To further explain our locking gas springs, we provide deeper insights into our production process here. In this section, you will discover every manufacturing detail of GASTAC’s lockable gas struts—one of the most critical components used in medical equipment and commercial furniture.
Tube Processing — Gas Springs Raw Materials
Seamless Steel Tube for Locking Gas Springs
Seamless steel tubes are mandatory, while welded tubes are strictly prohibited, because the welded area is considered to be inhomogeneous (non-uniform in structure). If a welded tube is applied, it will very likely lead to the following problems:
- Gas cylinder leakage: Nitrogen gas will escape through the microscopic gaps or weak spots in the weld seam.
- Tube deformation: The cylinder will easily deform or warp when subjected to high internal pressure, heavy loads, or sudden shock impacts.
Seamless steel pipe
Cut into suitable lengths
Surface polishing and concentric machining ensure perfect piston operation inside the tube.
Gas Springs Steel Pipe Cleaning
Following the machining process, raw steel tubes naturally retain cutting fluids and micro-iron filings. At GASTAC, every cylinder undergoes a multi-stage ultrasonic cleaning and degreasing process prior to assembly. Eliminating these microscopic particulates is critical; even the smallest debris can damage the high-pressure rubber seals—especially the O-ring—and cause premature nitrogen gas leakage.
Gas Springs Rolling Crimping
- 1. Rolling Crimping: Cold hydraulic rollers press the tube into end-cap grooves. Fast, zero heat, and 100% gastight.
- 2. Projection Welding: Instant electric pulse fuses the tube and end-cap together. High strength, minimal heat.
- 3. Friction Welding: Ultra-high-speed friction melts the metals together. Flawless joint, strong as steel.
- 4. Threading & Gluing: Internal/external threads screwed tight with industrial metal glue. Zero heat, best for heavy-duty custom struts.
Manual testing interface
Oil filling of steel pipes
Gas Springs Assembly
Assemble Gas Springs
- Loading: The precision-cleaned piston rod, piston, guide bushing, and high-pressure seals are loaded into the seamless steel tube.
- Crimping: Hydraulic machines roll a precise crimping groove onto the tube, permanently locking the internal guide components in place.
- Filling & Sealing: Hydraulic oil is injected for damping, followed by high-pressure nitrogen gas inflation to achieve the exact target force.
- Testing: Every assembled gas spring undergoes 100% force validation and leakage inspection to ensure zero defects.
Gas Springs Crimping Groove
Gas Springs Nitrogen Filling
Gas Springs Finished Product Cleaning
Before packaging, every finished gas spring undergoes a thorough wash to remove all residual oil and fingerprints. This ensures a pristine, smudge-free finish and prevents external dust from sticking to the piston rod during operation.
Gas Springs Testing
Every GASTAC gas spring undergoes 100% rigorous testing before delivery. We perform automated force validation to ensure exact lifting specs, advanced pressure-leakage checks to guarantee a perfect seal, and mechanical stroke testing to ensure flawless, smooth operation.
Gas Springs Production Process Video
Take a quick look inside the GASTAC factory to see the advanced manufacturing behind our high-performance gas springs. This video showcases our lean production lines, strict quality controls, and 100% rigorous testing that ensure every product delivers zero-defect reliability.
If you have any specific requirements, please contact professional GASTAC team. You can also visit our YouTube channel to explore various gas spring models and their diverse applications, helping you get a deeper understanding of the GASTAC brand.
Gas Spring Shipment & Delivery
Gas Springs Labeling
Gas Springs Pallet Packaging
Quality Control of GASTA Gas Springs
GASTAC factory is ISO9001 and IATF 16949 certified, ensuring international automotive-grade quality management. Every GASTAC gas spring complies with RoHS and REACH standards for environmental safety, delivering certified durability and reliable performance worldwide.
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