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ISO 6624-4:2016 pdf free

ISO 6624-4:2016 pdf free.Internal combustion engines一Piston rings一Half keystone rings made of steel
This part of ISO 6624 specifies the essential dimensional features of half keystone rings made of steel,types HK, HKB and HKBA, having nominal diameters from 50 mm up to, and including, 160 mm, used in reciprocating internal combustion piston engines for road vehicles and other applications.
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for 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 6621-4, Internal combustion engines一Piston rings一Part 4: General specifications
The half keystone ring types are specified in Tables 1 and 2 and Figures 1, 2 and 3. Their common features and the dimensions of those features are specified in Tables 3 to 6 and Figures 4 to 10 Table 7 gives the force factors for the different ring types, while Table 8 gives the dimensions and forces of half keystone rings.
The common features and dimensional tables presented in this part of ISO 6624 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[4] and ISO 6621-4 before completing selection.
EXAMPLE Designation of a piston ring complying with the requirements of ISO 6624-4, being a 7° half keystone ring made of steel with a straight faced peripheral surface (HK), of nominal diameter d1 = 60 mm (60),of nominal ring widthh1 = 1,2 mm (1,2), made of CrSi alloyed steel subclass 62 (MC62), and having a chromium plated peripheral surface with a minimum thickness of 0,1 mm (CR2). Parameters in parenthesis are used in the ISO ring designation:Piston ring ISO 6624-4 HK- 60 x 1,2 – MC62/CR2
Figure 2 shows the general features of piston ring type HKB.See Table 7 for dimensions and forces.h3 values are calculated based on Annex A.ISO 6624-4 pdf free.

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