ISO 6627 pdf download Internal combustion engines — Piston rings — Expander/segment oil-control rings
This International Standard specifies the essential dimensional features of expander/segment oil-control rings,without providing a complete product description (because expander-spacer design varies from piston-ringmanufacturer to piston-ring manufacturer，the interaction between the manufacturer and the client wildetermine specific design details).
This International Standard applies to expanderlsegment oil-control rings of nominal diameters ranging from40 mm to 125 mm for reciprocating internal combustion engines for road vehicles and other applications. ltalso applies to piston rings for compressors working under analogous conditions.
The following referenced documents are indispensable for the application of this document.For datedreferences,only the edition cited applies. Forundated references,the latest edition of the referenceddocument (including any amendments) applies.
ISO 6621-2, Internal combustion engines —Piston rings — Part 2: Inspection measuring principlesISO 6621-3, Internal combustion engines — Piston rings — Part 3: Material specifications
ISO 6621-4,Internal combustion engines — Piston rings — Part 4 : General specificationsISO 6626,Internal combustion engines — Piston rings —Coil-spring-loaded oil control rings
3 symbols and abbreviated terms
For the purposes of this International Standard, the symbols and abbreviated terms in Table 1 apply.