BS ISO 6626-2:2013 pdf free
BS ISO 6626-2:2013 pdf free.Internal combustion engines – Piston rings
This part of ISO 6626 specifies the essential dimensional features of coil-spring-loaded oil control rings made of cast iron, types DSF-C, SSF, GSF, DSF, SSF-L, DSF-NG and DSF-CNP. It is applicable to those piston rings in sizes 60 mm to 110 mm, inclusive, for reciprocating internal combustion engines for road vehicles and other applications.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable to its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6621-2, Internal combustion engines一Piston rings一Part 2: Inspection measuring principles
ISO 6621-3, Internal combustion engines一Piston rings一Part 3: Material specifications
ISO 6621-4, Internal combustion engines一Piston rings一Part 4: General speifications
ISO 6621-5, Internal combustion engines一- Piston rings一Part 5: Quality requirements
The coil-spring-loaded oil control ring types are specified in Figures 1 to 8. Their common features and the dimensions of the features are specified in Tables 1 and 2 and shown in Figures 9 to 11. Essential features of coil-springs are shown in Figures 12 to 16. Table 3 specifies different classes of contact pressure. Tables 4 to 9 give the dimensions and forces of coil-spring-loaded oil control rings.
The common features and dimensional tables presented in this part of ISO 6626 constitute a broad range of variables and, in selecting a particular ring type, the designer shall bear in mind the conditions under which it will be required to operate.
It is also essential that the designer refer to the specifications and requirements of ISO 6621-3 and ISO 6621-4 before completing a selection.
For the cast iron part, the recommended material is class 10 and shall be in accordance with ISO 6621-3.
For special applications, material classes 20 to 50 may be used.
Variation from these in face design and spring groove may be used, as recommended by individual manufacturers, in plain or chromed versions.BS ISO 6626-2 pdf download.
