Design tension gas spring
Annex I(informative)Design example of ordinary tension gas spring I.1 Example Design requirements of ordinary tension gas spring: using horizontally, the fully extended length is 334 mm, the working stroke is 55 mm, the force ratio α is 1.52, the minimum tension force is 147 N, and the piston rod diameter isRead More…
Design example of lockable gas spring
Annex H(informative)Design example of lockable gas spring H.1 Example Design a rigid lockable gas spring in the direction of extension. Requirements: The nominal force of the gas spring Fa = 350 N, nominal force Fb = 416 N, working stroke S1 = 84 mm, and extended length L = 350 mm. H.2 Solution H.2.1Read More…
Verification of cylinder strength and piston rod stability of gas spring
Annex F(normative)Verification of cylinder strength F.1 Radius ratio The radius ratio is calculated according to formula (F.1): ………………(F.1) F.2 Cylinder strength of gas spring The cylinder strength of a gas spring can be verified according to formula (F.2): ………………(F.2) Annex G (informative) Design example of compression gas spring G.1 ExampleRead More…
Verification of piston rod stability of gas spring
Annex E(normative)Verification of piston rod stability E.1 Calculation of moment of inertia for piston rod cross-section The moment of inertia of a solid piston rod’s cross-section is calculated according to formula (E.1): ………………(E.1) The moment of inertia of a hollow piston rod’s cross-section is calculated according to formula (E.2): ………………(E.2)Read More…
friction force Fr, piston rod diameter, cylinder inner diameter and nominal force of gas spring
Annex B (informative) Selection range for dynamic friction force Fr B.1 Dynamic friction force for compression gas spring and stretching gas spring See Table B.1 for the selection range of dynamic friction force of compression gas spring and stretching gas spring. Table B.1 Unit: N Specified force Maximum dynamicRead More…