Lockable gas springs (steel or stainless steel)

BIBUS (UK) Ltd supplies a complete range of Bansbach Lockable Gas Springs — engineered to provide secure, step‑less positional locking anywhere along the travel of the piston rod. These products combine the advantages of Bansbach gas springs with integrated locking mechanisms, allowing components to be stopped and held reliably at any position in both compression and tension modes, depending on type. They are ideal for systems requiring stable positioning under load, such as machine hatches, adjustable furniture, hospital beds, industrial covers and ergonomic fixtures.

Lockable gas springs are available in steel or stainless steel variants, with multiple locking behaviours and performance ranges to suit your application needs. External release systems — including lever, cable or hydraulic — provide controlled unlocking for dynamic adjustment.

Key Features

  • Secure positional locking — hold the gas spring at any point along the stroke.
  • Steel or stainless steel construction — corrosion resistance and strength for demanding environments.
  • Multiple types of locking behaviour to match application requirements:
    • Type B: Elastic locking in both directions.
    • Type K: Rigid locking in extension, relatively rigid in compression.
    • Type P: Rigid locking in compression, relatively rigid in extension.
    • Type KX: Rigid locking in both compression and extension.
  • Available in compression and tension (traction) variants — flexible selection for different load directions.
  • Wide configuration range of diameters, stroke lengths and force ratings for customised performance.
  • External release systems (lever, Bowden cable, hydraulic) available for optimum operability.
  • Smooth integration with release accessories and mounting hardware.

Available Types at a Glance

TypeLocking BehaviourTypical Size RangeStroke RangeForce Range
Type BElastic locking both directions6/15 – 22/40 mm~100 – 800 mm~50 – 6,000 N
Type KRigid lock in extension, relatively rigid in compression6/15 – 14/40 mm~10 – 700 mm~50 – 2,600 N
Type PRigid lock in compression, relatively rigid in extension8/22 – 14/40 mm~30 – 300 mm~40 – 2,600 N
Type KXRigid lock in both compression & extension10/22 – 14/40 mm~20 – 250 mm~0 – 2,600 N
Lockable Tension Gas SpringsRigid in both directions6/19 – 14/40 mm~10 – 600 mm~30 – 4,000 N

Note: Sizes and ranges shown are typical examples — contact us to configure specific force, stroke and release system combinations.

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Tension gas springs - Reverse lockable

"Reserve lockable" triggering system

Here, when you press it, the mechanism locks, whereas originally, pressing the button was supposed to unlock it.

Lockable tension gas springs

Lockable tension gas springs provide rigid locking in both compression and extension. An integrated valve within the piston enables secure stopping and locking in extension via the oil chamber, while rigid locking in compression is achieved through an internal stop that prevents the floating piston from compressing the gas.

To ensure the lockable gas spring in compression or tension is perfectly matched to your application, a wide range of control systems and accessories is available. These gas springs are offered in diameters from 6/19 mm to 14/40 mm, with stroke lengths from 10 mm to 600 mm and force ratings from 30 N to 4,000 N.

  • Lever unlocking system

  • Cable release system

  • Hydraulic unlocking system

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CAD Configurator

Use the official CAD Configurator to customise your gas spring dimensions, force, and fittings to your exact requirements. Once configured, get in touch with us to place your order or request support.

Contact us if you have any questions.

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