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Rigid in Compression Locking Gas Springs

Rigid in compression locking gas springs are similar to the rigid in tension locking springs with oil on both sides of the piston. However, when a compressive load is applied to the locked rod, the oil between the piston and the closed end of the tube will not compress and the rod cannot move. Conversely when a tensile force is applied, the gas in the nose section will compress permitting a small amount of movement but is less than that experienced with a flexible locking spring.

Rigid in compression locking springs can only be used with the rod pointing down. Also, release valves are not available for standard rigid in compression gas springs.

Applications include operating, veterinary, and massage tables, and wheelchair recline and support systems, among many others.


Flexible 10/23Flexible 10/28
Body diameter B 23 28
Admissible P1 force (P1 is the force 5mm from full extension) from 34 to 270 Pounds from 34 to 270 Pounds
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 standard rigid in compression locking gas spring

Shoulder Length = (stroke x multiplier) + Shoulder length constant


Flexible 10/23Flexible 10/28
Multiplier 2.8 2.8
Shoulder length 4.29" 4.53"
K factor obtained (P2/P1) 1.5 1.3

Example- Calculation of shoulder length for a standard rigid in compression locking gas spring with a 28mm body and a stroke of 120mm:

Minimum shoulder Length = (4x 2.8) + 4.53 = 15.73"

Rigid in Compression

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