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Flexible locking gas springs

A flexible locking gas spring has gas on both sides of the piston. Gas is compressible so if sufficient force is applied to the rod when it is in its locked state, either in tension or compression, the gas will compress and the rod will move a few millimetres from its locked position. When the force is removed the rod will return to its original position, whilst remaining locked, giving the characteristic flexing movement.

A small quantity of oil is inserted into the spring so that in its normal rod down position, the seal is lubricated for maximum life. Other orientations are possible by the addition of an oil chamber.




  Flexible 10/23 Flexible 10/28
Body diameter B 23 28
Admissible P1 force
(P1 is the force 5mm from full extension)
from 150 to 1200 Newtons from 150 to 1200 Newtons
Maximum force required to depress the plunger
(P2 is the force 5mm from full compression)
14% of force P2 14% of force P2


Calculate the shoulder length for a flexible locking gas spring
Shoulder Length = (stroke x multiplier) + Shoulder length constant

  Flexible 10/23 Flexible 10/28
Multiplier 2 2
Shoulder length constant 91 91
K factor obtained (P2/P1) 1.4 1.2

Example - Calculation of shoulder length for a flexible locking gas spring with a 28mm body and a stroke of 120mm:
Minimum shoulder Length = (120 x 2) + 91 = 331mm


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