ISO 11901-4:2021

This document specifies the dimensions (in millimetres), nominal initial forces and types of gas springs.
It is applicable to gas springs with increased spring force and same built height of type 7 500 to 200 000, pressurized with nitrogen with a nominal initial force of between 7 400 N (with a tolerance of ±5 %) and 200 000 N (with a tolerance of ±5 %), for use in press tools.
It also specifies marking, technical delivery conditions and designation.
NOTE       Specifications of mounting accessories for gas springs are given in ISO 11901‑2.