Locking Gas Struts

Our range of locking gas struts perform like conventional gas struts, with the addition of a special internal locking valve that allows the strut to be stopped in any position. Common applications for our locking gas struts include height and angle adjustment of seats on aircraft, buses, trains, specialist vehicles and on military vehicle seating.

Locking Gas Struts

What do Locking Gas Struts – Blocklift do?

If your project requires height adjustment that will remain fixed in position, or the ability to make adjustments to an application easily and instantly, then a locking gas strut could be the solution that you require. 

Our Blocklift range features four unique products that are ideally suited to a variety of applications and projects. 

BL1: Rigid in Extension

This gas strut locks the piston in extension giving full rigidity in extension, but in doing so, will still allow a few millimetres of movement in compression. Once a compressive load is released, the piston rod automatically returns to the original position. These locking gas struts can be mounted in any orientation offering the flexibility required for many projects. 

BL2: Rigid in Compression

This gas strut provides complete rigidity in compression, but will allow a few millimetres of movement in extension. Once the extension load is released, the piston rod automatically returns to the initial position. Our team of engineers recommend that these locking gas struts should be mounted rod down. However, it is possible to mount in any position, but this needs to be advised at the time of enquiry. 

BL3: Spring Blocking (Elastic Locking)

These locking gas struts are ideal for applications where some comfort is needed, even when the Blocklift is locked in position. For example, like the springs found in an office chair, when a load is applied to the locked gas strut in either extension or compression, the piston rod compresses a few millimetres. After a few millimetres it becomes harder to compress due to the increased pressure inside and holds locked in position. Once the load is released, the piston rod returns to its initial position. These locking gas struts should be mounted rod down. 

BL4: Rigid in Extension and Compression

The BL4 locking gas strut is totally rigid in both extension and compression. It is available with or without an extension force, depending on whether you need the gas strut to control the application or if the application is controlled by an external mechanism. These locking gas struts can be mounted in any orientation. 

Blocklift Type Blocklift Decription Blocklift Size Stroke (Rod) Length Min / Max
(in 1mm increments)
Tube Length Min / Max
(in 1mm increments)
Force Min / Max
(in 5N increments)
Rod End Thread Type
BL1 Rigid in Extension 8-23 30 – 240 100 – 580 100 – 450 M8 x 1.0
10-23 30 – 300 110 – 580 150 – 650 M10 x 1.0
10-28 30 – 300 110 – 580 150 – 1000 M10 x 1.0
BL2 Rigid in Compression 8-23 30 – 200 115 – 580 100 – 450 M8 x 1.0
10-28 30 – 270 125 – 460 150 – 1000 M10 x 1.0
BL3 Spring Blocking (Elastic Locking) 8-23 30 – 300 90 – 580 100 – 600 M8 x 1.0
10-23 30 – 400 100 – 580 150 – 1000 M10 x 1.0
10-28 30 – 400 110 – 580 150 – 1000 M10 x 1.0
BL4 Rigid in Extension & Compression 10-28 25 – 135 115 – 525 0 – 400 M10 x 1.0

What are the key benefits of locking gas struts?

  • UK-manufactured product
  • Locks in any position along the length of stroke
  • Single-handed operation
  • Safe to use with easy positional control
  • Self-contained unit and maintenance-free
  • Available in carbon or 316L stainless steel

How do the locking gas struts work?

Our locking gas strut can be stopped in any position because they are fitted with a locking valve, they only allow movement when the release pin, located at the end of the rod, is depressed. This will usually be achieved by using a cable-operated release mechanism, or directly attached paddle. 

Common applications that use locking gas struts include height and angle adjustment of seats on aircraft, buses, trains, specialist vehicles and on military vehicle seating. They are also used for providing controllable adjustment on hospital beds, physiotherapy tables and wheelchairs, as well as height risers for desks. Locking gas struts can be used on many different applications across such a wide range of industry sectors that their use is only limited by the design engineer’s imagination. 

Will it work for my requirements?

At Camloc, we offer a bespoke service where we treat every project individually, and our team of experienced designers and engineers will work with you to provide gas spring solutions that will exceed your expectations.  

We pride ourself on our service to customers, with design engineers on hand to work with you using the latest CAD/CAE techniques. Recognising that no two applications are the same, we provide engineered solutions to meet your exact requirements. 

For more information about our range of motion control solutions, visit our products page today. 

If you want to speak to a member of our team, call us on +44 (0)116 274 3600 or fill in the Contact Us form and we will get back to you. 

 

Sectors

Aerospace

Seat back adjustments

Medical

Hospital beds patient handling equipment

Speciality Vehicle

Steering column adjustment

What sizes do you offer?

Gas struts are commonly referenced by their size. The sizes directly relate to the diameter of the rod and the tube, for example, an 8-23 in the Blocklift range will have a rod diameter of 8mm and a tube diameter of 23mm. The most common sizes for our locking gas struts are 10-28 and 8-23.

We also offer a wide range of bespoke sizes depending on your requirements.

What options are available?

  • BL1: Rigid in Extension
  • BL2: Rigid in Compression
  • BL3: Spring Blocking (Elastic)
  • BL4: Rigid in Extension and Compression
  • Tube lengths available in 1mm increments
  • Stroke length available in 5mm increments
  • Force settings in 5N increments
  • Valve to allow for downward force adjustment
  • Mild steel or 316 stainless steel construction
  • K-factor (spring rate) adjustment
  • Oil chamber / rod-up mounting options
  • Wide range of end fittings
  • Food safe oils
  • Non-magnetic / medically safe
What Our Customers Say

How does Camloc operate?

Continuous investment in our staff and the latest hardware keeps us at the forefront of our industry, ensuring we continuously adopt the latest manufacturing processes from our facility, and we successfully problem-solve for our customers. We continue to enhance and evolve our production processes using lean manufacturing methods, something we have been doing since 2001.

We deliver high quality products that cover a wide range of industry sectors, across the UK, USA, Europe and around the world.

Get in touch via our Contact Form or call us on +44 (0)116 274 3600

To access more information on installing, maintaining and technical data about gas spring, damper and motion control solutions – head to our Help Centre.

It appears that you're visiting from .
Would you like to

Locking gas struts - blocklift - Horizontal
Our locking gas strut can be stopped in any position because they are fitted with a locking valve, they only allow movement when the release pin, located at the end of the rod, is depressed. Click the button to download the product data-sheet.