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2.References
2.1Applicable Publications—The following publications form a part of the specification to the extent specified
herein.  Unless otherwise indicated the latest revision of SAE publications shall apply.
2.1.1SAE P UBLICATIONS
SAE ISO1
DESIGNATION EQUIVALENT
INTERNAL COMBUSTION ENGINES—PISTON RINGS J15886621/1Vocabulary
J15896621/2Measuring principles
J15906621/3Material specifications
J15916621/4General specifications
J19966621/5Quality requirements
INTERNAL COMBUSTION ENGINES—PISTON RINGS J19976622/1Rectangular rings
J19986622/2 TR Rectangular rings with narrow ring width
J19996623INTERNAL COMBUSTION ENGINES—PISTON RINGS—
SCRAPER RINGS
INTERNAL COMBUSTION ENGINES—PISTON RINGS J20006624/1Keystone rings
J20016624/2 TR Half keystone rings
J20026625INTERNAL COMBUSTION ENGINES—PISTON RINGS—
OIL CONTROL RINGS
J20036626INTERNAL COMBUSTION ENGINES—PISTON RINGS—
COIL SPRING LOADED OIL CONTROL RINGS J20046627 TR INTERNAL COMBUSTION ENGINES—PISTON RINGS—
EXPANDER/SEGMENT OIL CONTROL RINGS J2226INTERNAL COMBUSTION ENGINES—PISTON RINGS—
STEEL RECTANGULAR RINGS
editorially1101TECHNICAL DRAWINGS—Tolerancing of form, orientation,
location and run-out—Generalities, definitions, symbols indica-
tions on drawings
1.TR refers to Technical Report
3.Expander/Segment Assembly—When assembled in the engine the segments and expander shall be positioned
as shown in Figure 1.
FIGURE 1—EXPANDER/SEGMENT ASSEMBLY
3.1Ring Types—There are any number of possible oil ring expander designs.  The more common designs in use
today are designated in Figures 2 through 6.
3.2Cross Section Configuration
3.2.1ES-1 T YPE
FIGURE 2—ES-1 TYPE
3.2.2ES-2 T YPE
FIGURE 3—ES-2 TYPE
3.2.3ES-3 T YPE
FIGURE 4—ES-3 TYPE
3.2.4ES-4 T YPE
FIGURE 5—ES-4 TYPE
3.2.5ES-5 T YPE
FIGURE 6—ES-5 TYPE
4.Common Features
4.1Expander Seating Tab Angle—(See Figure 7.)
The expander may be designed with the seating tabs at a slight angle resulting in side sealing between the segment and the side of the piston groove.
FIGURE 7—EXPANDER SEATING TAB ANGLE
4.2Segment Chromium Thickness—(See Figure 8.)
(Common feature of segment is chrome plated periphery.)
FIGURE 8—SEGMENT CHROMIUM THICKNESS
4.3Segment Width (h 6)—(See Figure 9.)
FIGURE 9—SEGMENT WIDTH (h 6)
5.
Materials 5.1Expander
Austenitic Stainless Steel (SAE J1590)
Carbon Steel (as agreed upon between client and manufacturer)
5.2Segment—Carbon Steel
TABLE 1—LAYER THICKNESS
Dimensions in millimeters
Chromium
Thickness min CR1
0.05CR2
0.10CR30.15

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