EN ISO 7285:2021 pdf download.Pneumatic cylinders for mechanized multiple spot welding (ISO 7285:1995).
This liiternatonaI Standard specilies the requirements or the gromctrkal and mcch.inical tharacteristics ol pneumatic cylinders used for multiple spotwelding machines and theirmanufacturing. delivery and test specifications.
These cylinders (or a nominal air pressure of I M Pa (10 bar) are double-acting, with two piston stages In series fur the advance during th oper-.itsunal stroke and the force, lflLl a single piston stage for the return,
2 Normative reference
The following standard contains provisions which, through reference in this text, constitute provisions ol this International Standard. At the time of publication, the edition hidlcated was valid. All standards are subfrct to revision. and parties to agleements based on this International Standard are encouraged to lnvesflgate the possibility of applying the most recent edition of the standard indicated below Members of IEC and ISO maintain registers of currently valid International Standards.
ISO 4394.1:19110, Fluid power systems and companersr3 — Cylinder barrels — Pert 1: Requirrment. frw steel tubes with specraflyfirneJwd bores
3 Nominal characteristIcs
The cylinders covered by this International Standard are characterized by their nominal stroke, their nominal force and their outside dimensions.
3.1 Nominal strokes
The nominal strokes standardized, in millimetres, are
25—31.5 40—50—63—-HO— 100— 125 — IlsO
3.2 Nominal forces
The nominal forces standardized, in kilonewions, for a pressure oil U Pa (10 bar) are
2.19 — 2.86 — 3,61 — 4,61 — 5.92 — 7,60 — 9,74
4 FIclng the cylinder
The cylinder is mounted on the machine by one of the methods A to H described in annexA.
S Dimensions
5.1 Outside dimensions
t)ependlng on the method of mounting the cylinder, the nominal iorce and the nominal stroke, the cylinders shall have the dimensions indicated in the drawings in annrxJ taking into account the characteristics of the electrode holder .ittachnient indicated in annex 8.EN ISO 7285 pdf download.