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Engine mechanical components Environment Powertrains Piston and Ring Standards Committee

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Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - GENERAL SPECIFICATIONS
1990-09-01
HISTORICAL
J1591_199009
Differences, where they exist, are shown in Appendix A. This SAE Recommended Practice specifies the general characteristics of piston rings and individual dimensional criteria, which are specified as appropriate in the documents in Section 2. This document also provides a system for coding, designation, and marking of piston rings. This document applies to the manufacture of piston rings up to and including 200 mm diameter for reciprocating internal combustion engines. It also applies to piston rings for compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - HALF KEYSTONE RINGS
1990-09-01
HISTORICAL
J2001_199009
Differences, where they exist, are shown in Appendix A. This SAE Recommended Practice specifies the essential dimensional features of HK- and HKB- half keystone rings with narrow ring width types. Dimensional Tables 6 and 7 allow for the use of cast iron (Table 6) or steel (Table 7). Since the modulus of elasticity of steel rings is higher than that of cast iron rings, the fluctuation in the surface pressure will become greater if the free gap is set as the reference for forces. Therefore, forces are set using the surface pressure as the reference in order to minimize the effect of the fluctuation. The requirements of this document apply to half keystone rings of reciprocating internal combustion engines up to and including 70 mm diameter for cast iron rings and up to and including 100 mm diameter for steel rings.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - INSPECTION MEASURING PRINCIPLES
1990-01-01
HISTORICAL
J1589_199001
Differences, where they exist, are shown in Appendix A. This document defines the measuring principles to be used for measuring piston rings. It applies to piston rings up to and including 200 mm diameter for reciprocating internal combustion engines. These inspection measuring principles may also be used for piston rings for compressors working under analogous conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - KEYSTONE RINGS
1989-10-01
HISTORICAL
J2000_198910
Differences, where they exist, are shown in Appendix A. This document specifies the essential dimensional features of T, TB, TM, K, KB, and KM keystone piston ring types. The requirements of this document apply to compression rings for reciprocating internal combustion engines up to and including 200 mm diameter.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - MATERIAL SPECIFICATIONS
1989-10-01
HISTORICAL
J1590_198910
Differences, where they exist, are shown in Appendix A. This document establishes a classification of materials intended for the manufacture of piston rings based on mechanical properties and the stresses that these materials are capable of withstanding. This document applies to the manufacture of piston rings up to and including 200 mm diameter for reciprocating internal combustion engines. It also applies to piston rings for compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - OIL CONTROL RINGS
1989-10-01
HISTORICAL
J2002_198910
Differences, where they exist, are shown in Appendix A. This document specifies the dimensional features of S, G, D, and DV oil control piston ring types. The normal range for the axial width of oil control rings (2.5 to 8 mm inclusive) is divided into 0.5 or 1.0 increments. In Table 7, dimensions in inch units are given for oil control rings with axial width 4.75 mm (equal to 3/16 in) for existing applications. The requirements of this document apply to oil control rings for reciprocating internal combustion piston engines up to and including 200 mm in diameter. They may also be used for piston rings of compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - QUALITY REQUIREMENTS
1990-06-01
HISTORICAL
J1996_199006
Differences, where they exist, are shown in Appendix A. This document specifies the quality aspects that are capable of definition but not normally found on a drawing specification. The difficulty of trying to define in absolute terms the quality attainable in normal commercial manufacture of piston rings is well known. In this document the commonly encountered aspects of quality in terms of casting defects and other departures from ideal are quantified. Many minor defects are clearly quite acceptable; other defects because of size or numbers are inadmissible. This document covers the following: a Single piece piston rings of grey, carbidic, malleable, spheroidal graphite cast iron or steel; b Multipiece piston rings (oil control rings) consisting of cast iron parts and spring components; c Single piece and multipiece rings of steel, i.e., oil control rings in the form of strip steel components or steel segments (rails) with spring expander components.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - RECTANGULAR RINGS
1989-10-01
HISTORICAL
J1997_198910
Differences, where they exist, are shown in Appendix A. This document specifies the essential dimensional features of R, B, and M rectangular piston ring types. Dimensional Tables 8 and 9 offer the choice of two radial wall thicknesses: a radial wall thickness "regular" (Table 8) b radial wall thickness "D/22" (Table 9) The requirements of this document apply to rectangular rings for reciprocating internal combustion piston engines up to and including 200 mm diameter. They may also be used for piston rings of compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - SCRAPER RINGS
1989-10-01
HISTORICAL
J1999_198910
Differences, where they exist, are shown in Appendix A. This document specifies the essential dimensional features of N, NM, E, and EM scraper piston ring types. Dimensional Tables 7 and 8 offer the choice of two radial wall thicknesses: a radial wall thickness "regular" (Table 7); b radial wall thickness "D/22" (Table 8). The requirements of this document apply to scraper rings for reciprocating internal combustion piston engines up to and including 200 mm diameter. They may also be used for piston rings of compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS - VOCABULARY
1990-09-01
HISTORICAL
J1588_199009
Differences, where they exist, are shown in the appendix with associated rationale. This SAE Recommended Practice defines the most commonly used terms for piston rings. These terms designate either types of piston rings or certain characteristics and phenomena of piston rings. The terms and definitions apply to piston rings for reciprocating internal combustion engines and compressors working under analogous conditions. An addendum is included which lists equivalent terms in English, French, Russian, German, Spanish, Portuguese, Italian, and Japanese.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS -RECTANGULAR RINGS WITH NARROW RING WIDTH
1990-06-01
HISTORICAL
J1998_199006
Differences, where they exist, are shown in Appendix A. This SAE Recommended Practice specifies the essential dimensional features of R, B, and M rectangular piston ring types with narrow ring width. Dimensional Tables 8 and 9 allow for the use of cast iron (Table 8) or steel (Table 9). Since the modulus of elasticity of steel rings is higher than that of cast iron rings, the fluctuation in the surface pressure will become greater if the free gap is set as the reference for force. Therefore, forces are set using the surface pressure as the reference, in order to minimize the effect of the fluctuation. The requirements of this document apply to rectangular rings for reciprocating internal combustion engines up to and including 90 mm diameter for cast iron rings and up to and including 100 mm diameter for steel. They may also be used for piston rings of compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES - PISTON RINGS EXPANDER/SEGMENT OIL CONTROL RINGS
1990-09-01
HISTORICAL
J2004_199009
This SAE Recommended Practice is equivalent to ISO Standard 6627 TR. Differences, where they exist, are shown in the appendix with associated rationale. This document 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.
Standard

INTERNAL COMBUSTION ENGINES—PISTON RING-GROOVES
1996-07-01
HISTORICAL
J2275_199607
There is no ISO standard equivalent to this SAE Standard. This SAE standard identifies and defines the most commonly used terms for piston ring-groove characteristics, specifies dimensioning for groove widths, and demonstrates the methodology for calculation of piston groove root diameter. The requirements of this document apply to pistons and rings of reciprocating internal combustion engines and compressors working under analogous conditions, up to and including 200 mm diameter and 4.5 mm width for compression rings and 8.0 mm width for oil rings. The specifications in this document assume that components are measured at an ambient temperature of 20 °C (68 °F). Tolerances specified in this document represent a six sigma quality level.
Standard

INTERNAL COMBUSTION ENGINES—PISTON RINGS—EXPANDER/SEGMENT OIL CONTROL RINGS
1992-09-01
HISTORICAL
J2004_199210
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.
Standard

INTERNAL COMBUSTION ENGINES—PISTON RINGS—GENERAL SPECIFICATIONS
1992-10-01
HISTORICAL
J1591_199210
Differences, where they exist, are shown in Appendix A. This SAE Standard specifies the general characteristics of piston rings and individual dimensional criteria, which are specified as appropriate in the documents in Section 2. This document also provides a system for coding, designation, and marking of piston rings. This document applies to the manufacture of piston rings up to and including 200 mm diameter for reciprocating internal combustion engines. It also applies to piston rings for compressors working under similar conditions.
Standard

INTERNAL COMBUSTION ENGINES—PISTON RINGS—KEYSTONE RINGS
1992-10-20
HISTORICAL
J2000_199210
Differences, where they exist, are shown in Appendix A. This SAE Standard specifies the essential dimensional features of T, TB, TM, K, KB, and KM keystone piston ring types. The requirements of this document apply to compression rings for reciprocating internal combustion engines up to and including 200 mm diameter.
Standard

INTERNAL COMBUSTION ENGINES—PISTON RINGS—MATERIAL SPECIFICATIONS
1992-10-01
HISTORICAL
J1590_199210
Differences, where they exist, are shown in Appendix A. This SAE Standard establishes a classification of materials intended for the manufacture of piston rings based on mechanical properties and the stresses that these materials are capable of withstanding. This document applies to the manufacture of piston rings up to and including 200 mm diameter for reciprocating internal combustion engines. It also applies to piston rings for compressors working under similar conditions.
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