If you require height adjustment within a vehicle, or the ability to make adjustments to an application effortlessly and instantly, then a locking gas strut may well be what you require.
Our Blocklift range includes four products suited to a variety of applications.
BL1: Rigid in Extension
This gas strut locks the piston in extension giving total rigidity in extension, but will allow a few millimetres of movement in compression. Once a compressive load is released, the piston rod automatically returns to the initial position. These locking gas struts can be mounted in any orientation.
BL2: Rigid in Compression
This gas strut provides total 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. 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 (cushioning or elasticity) is needed, even when the Blocklift is locked in position. 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|
Our locking gas strut can be stopped in any position. 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 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!
We offer a bespoke service, and our team of experienced engineers will work with you to provide gas spring solutions, even if it is outside the standard type and sizes.
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.
Our products page has more information about the various range of solutions that we provide.
Talk to one of our team on +44 (0)116 274 3600 or fill in the Contact Us form and we will get back to you.
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.
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.