Gas Struts

A gas strut, also known as a gas spring is a mechanical component that uses compressed nitrogen gas to force a precision rod attached to a piston back and forth within an enclosed metal cylinder. Gas struts are primarily designed as a direct support mechanism for safely lifting, positioning, lowering and counterbalancing different weights. For more information on how they work, you can consult our Gas Springs Guide.

How does a Gas Strut work?

A gas strut construction is very simple, it comprises of a precision rod attached to a piston and a central tubular body containing compressed nitrogen gas and lubricating oil. When force is applied to the protruding portion of the rod it presses onto the piston head a bit like a plunger on a syringe, compressing the nitrogen gas. This creates an internal pressure that exceeds the pressure outside of the cylinder closing the gas strut. When the force is removed from the external rod the gas is de-compressed and the pressure pushes the piston back out again, opening the gas strut.

Types of Gas Strut

Gas struts or gas springs are available as stop and stay or variable pressure with a steel or stainless steel body. Depending on application stroke length, extended length, minimum and maximum force ranges and end fittings must be taken into account.

Gas Strut sizes

Gas struts are usually referred to by their size, the most common are:

  • 6 mm rod diameter – 15 mm tube diameter. Range 50 - 400 N (11-90 lbs)
  • 8 mm rod diameter – 18 mm tube diameter. Range 100 - 650 N (22-146 lbs)
  • 10 mm rod diameter - 23 mm tube diameter. Range 150 – 1200 N (34-269 lbs)
  • 14 mm rod diameter – 28 mm tube diameter. Range 200 – 2500 N (45-562 lbs)

Gas struts are utilised in a wide range of applications. The most common use is for the gas spring is lifting and lowering of a car boot. Other areas include:

  • Boat access hatches
  • Cargo area on aeroplanes
  • boats
  • coaches
  • Office furniture and chairs
  • Skylights
  • Office chairs and furniture
  • Machine guards and Conveyor gates.

Larger gas struts are also used in industrial manufacturing such as tool pressing. The gas struts used in these areas have a force range capable of exerting up to forty tonnes.


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Description Price Locking & Holding Cylinder Material End Connector Material End Connector Stroke Length Rod Diameter Piston Diameter Maximum Force Minimum Force
RS Stock No. 686-991
Mfr. Part No.SWY8060600058
TWD2,288.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 250mm 18mm 8mm 650N 100N
RS Stock No. 686-941
Mfr. Part No.SWV6050500035
TWD2,177.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 100mm 15mm 6mm 400N 50N
RS Stock No. 686-957
Mfr. Part No.SWV6050500036
TWD2,558.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 150mm 15mm 6mm 400N 50N
RS Stock No. 686-935
Mfr. Part No.SWV6050500034
TWD2,158.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 60mm 15mm 6mm 400N 50N
RS Stock No. 202-2507
Mfr. Part No.SWV8ECV800003
TWD3,298.00
1 Pair
Pair(s)
Full Extension Lock Only Steel Nylon, Steel Ball & Socket Joint 200mm 18mm 8mm 650N 100N
RS Stock No. 234-455
Mfr. Part No.SWV1080800027
TWD2,480.00
1 Pair
Pair(s)
- Steel Steel, Zinc Ball & Socket Joint, End Joint 100mm 23mm 10mm 1200N 150N
RS Stock No. 194-6523
Mfr. Part No.GS-B3-9052
TWD3,753.00
Each
units
Any Position Lock Steel - - 100mm 28mm 10mm 1000N 150N
RS Stock No. 202-2513
Mfr. Part No.SWV8ECV800004
TWD3,382.00
1 Pair
Pair(s)
Full Extension Lock Only Steel Nylon, Steel Ball & Socket Joint 250mm 18mm 8mm 650N 100N
RS Stock No. 346-9581
Mfr. Part No.SXY1A8A800004
TWD10,279.00
1 Pair
Pair(s)
- Stainless Steel Stainless Steel Ball & Socket Joint 300mm 23mm 10mm 1200N 150N
RS Stock No. 687-039
Mfr. Part No.SWV4101000019
TWD4,536.00
1 Pair
Pair(s)
- Steel Steel Ball & Socket Joint, End Joint 300mm 28mm 14mm 2500N 200N
RS Stock No. 234-449
Mfr. Part No.SWV6050500037
TWD2,332.00
1 Pair
Pair(s)
- Steel Nylon, Steel Ball & Socket Joint, End Joint 200mm 15mm 6mm 400N 50N
RS Stock No. 194-6521
Mfr. Part No.GS-B3-9050
TWD3,360.00
Each
units
Any Position Lock Steel - - 150mm 23mm 8mm 600N 100N
RS Stock No. 194-6518
Mfr. Part No.GS-B3-9048
TWD3,053.00
Each
units
Any Position Lock Steel - - 50mm 23mm 8mm 600N 100N
RS Stock No. 182-4699
Mfr. Part No.SSY8060600006
TWD3,533.00
1 Pair
Pair(s)
Any Position Lock Steel Nylon, Steel Ball & Socket Joint 250mm 18mm 8mm 650N 100N
RS Stock No. 339-9050
Mfr. Part No.SXY8A6A600002
TWD4,513.00
1 Pair
Pair(s)
- Stainless Steel Nylon, Stainless Steel Ball & Socket Joint 200mm 18mm 8mm 650N 100N
RS Stock No. 182-4655
Mfr. Part No.SSV6050500004
TWD3,415.00
1 Pair
Pair(s)
Any Position Lock Steel Nylon, Steel Ball & Socket Joint 200mm 15mm 6mm 400N 50N
RS Stock No. 253-352
Mfr. Part No.SXV4101000011
TWD18,958.00
1 Pair
Pair(s)
- Stainless Steel Stainless Steel Ball & Socket Joint 500mm 28mm 14mm 2500N 200N
RS Stock No. 182-4734
Mfr. Part No.SSV1080800004
TWD3,984.00
1 Pair
Pair(s)
Any Position Lock Steel Steel, Zinc Ball & Socket Joint 300mm 23mm 10mm 1200N 150N
RS Stock No. 202-2490
Mfr. Part No.SWV8ECV800002
TWD3,212.00
1 Pair
Pair(s)
Full Extension Lock Only Steel Nylon, Steel Ball & Socket Joint 150mm 18mm 8mm 650N 100N
RS Stock No. 253-324
Mfr. Part No.SXV4G6200275G6R
TWD14,218.00
1 Pair
Pair(s)
- Stainless Steel Stainless Steel Ball & Socket Joint 200mm 28mm 14mm 2500N 200N