# ISO 8137:1986 — Withdrawn and superseded ISO standards For ISO 8137:1986, item title is Hydraulic fluid power — Single rod cylinders, 250 bar (25 MPa) series — Port dimensions; status code is 9599; successor is ISO 6022:2006; withdrawn / published date is 1986-11-27, recorded from its source on 2026-08-05. - **Identifier:** ISO 8137:1986 _(verified: appears in the quote below)_ - **Item title:** Hydraulic fluid power — Single rod cylinders, 250 bar (25 MPa) series — Port dimensions _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 6022:2006 - **Withdrawn / published date:** 1986-11-27 _(verified: appears in the quote below)_ ## What the source says > 15218,IS,,ISO 8137:1986,"Hydraulic fluid power — Single rod cylinders, 250 bar (25 MPa) series — Port dimensions",Transmissions hydrauliques — Vérins 250 bar (25 MPa) à simple tige — Dimensions des orifices,1986-11-27,1,['23.100.20'],ISO/TC 131/SC 3,9599,,[36109],"['en','fr']",2,"
Lays down the port dimensions for cylinders as required for interchangeability of commonly used hydraulic cylinders. The table contains the bore sizes as follows: 50, 63, 80, 100, 125, 160, 200, 250, 320, 400, 500 mm; and for square and rectangular flanges the nominal flange sizes (DN): 13, 19, 25, 32, 38 mm.
" ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).