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SAE J2004 (JUN2008)

Current Revision

Internal Combustion Engines--Piston Rings--Expander/Segment Oil Control Rings

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This SAE Standard is equivalent to ISO Standard 6627 TR. Differences, where they exist, are shown in Appendix A with associated rationale. This SAE Standard specifies the dimensional features of commonly used oil control rings having two steel segments (rails) separated and expanded by one steel expander/spacer. The segments vary in width from 0.4 to 0.6 mm. The assembly width ranges from 2.5 to 4.75 mm. The 4.75 mm width is equivalent to existing 3/16 in applications. Expander design will vary considerably with piston ring manufacturer. The total circumferential deflection and the piston groove depth should be considered when designing these oil rings to optimize the fit of the ring assembly into the piston groove. This document applies to oil control rings up through 125 mm for reciprocating internal combustion engines. It may also be used for piston rings of compressors working under similar conditions.

SDO SAE: SAE International
Document Number J2004
Publication Date June 30, 2008
Language en - English
Page Count 10
Revision Level 200806
Supercedes
Committee
Publish Date Document Id Type View
June 30, 2008 J2004_200806 Revision
April 1, 1998 J2004_199804 Revision
Sept. 1, 1992 J2004_199210 Revision
Sept. 1, 1990 J2004_199009 Revision