BS ISO 6626-1:2024

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Internal combustion engines. Piston rings – Coil spring loaded oil control rings made of cast iron

Published By	Publication Date	Number of Pages
BSI	2024	90

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Categories: 43.060.10 - Engine block and internal components, BSI

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Description

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PDF Pages	PDF Title
2	undefined
7	Foreword
8	Introduction
9	1 Scope 2 Normative references 3 Terms and definitions 4 Overview
10	5 Piston ring types and designation 5.1 Types DSF-C, DSF-CNP, SSF, GSF, DSF, DSF-NG and SSF-L — General features and dimensions 5.2 Type DSF-C ─ Coil-spring loaded bevelled edge oil control ring, chromium plated and profile ground 5.2.1 General features and dimensions
11	5.2.2 Example designation of a type DSF-C piston ring in accordance with this document 5.3 Type DSF-CNP ─ Coil-spring loaded bevelled edge oil control ring, chromium plated not profile ground 5.3.1 General features and dimensions
12	5.3.2 Example designation of a type DSF-CNP piston ring in accordance with this document 5.4 Type SSF ─ Coil-spring loaded slotted oil control ring 5.4.1 General features and dimensions
13	5.4.2 Example designation of a type SSF piston ring in accordance with this document 5.5 Type GSF ─ Coil-spring loaded double bevelled oil control ring 5.5.1 General features and dimensions
14	5.5.2 Example designation of a type GSF piston ring in accordance with this document 5.6 Type DSF ─ Coil-spring loaded bevelled edge oil control ring 5.6.1 General features and dimensions
15	5.6.2 Example designation of a type DSF piston ring in accordance with this document 5.7 Type DSF-NG ─ Coil-spring loaded bevelled edge oil control ring (face geometry similar to type DSF-C or type DSF-CNP) 5.7.1 General features and dimensions
16	5.7.2 Example designation of a type DSF-NG piston ring in accordance with this document 5.8 Type SSF-L ─ Coil-spring loaded slotted oil control ring with h1 = 4,75 mm (3/16 in) ring width and 0,6 mm nominal land width 5.8.1 General features and dimensions
17	5.8.2 Example designation of a type SSF-L piston ring in accordance with this document 6 Common features 6.1 Oil drainage by slots or holes 6.1.1 Arrangement of slots
19	6.1.2 Slot length 6.1.3 Arrangement of holes 6.1.4 Diameter and number of holes 6.2 Plating thickness — DSF-C and DSF-CNP Coil-spring loaded oil control rings
20	6.3 Peripheral edges at gap of chromium plated oil control rings 6.4 Spring groove and land offsets 7 Coil springs 7.1 Types of coil spring
22	7.2 Latch pin and location of small pitch in the coil spring 7.3 Coil spring excursion (extended gap)
23	7.4 Position of coil spring gap and fixing 7.5 Material 8 Tangential force and nominal contact pressure 8.1 Tangential force, Ft 8.1.1 Force factors
24	8.1.2 General tangential force, Ft 8.1.3 Actual tangential force, Ft, and tolerance 8.1.4 Normalized tangential force, FN 8.2 Nominal contact pressure, po 9 Dimensions
86	Annex A (informative) Historical classes of nominal contact pressure, po
88	Bibliography

Additional information

Status	Definitive
Pages	90
Publication Date	2024-07-24
ISBN	978 0 539 17095 5
Standard Number	BS ISO 6626-1:2024
Title	Internal combustion engines. Piston rings – Coil spring loaded oil control rings made of cast iron
Identical National Standard Of	ISO 6626-1
Replaces	BS ISO 6626-3:2019
Descriptors	Grooves, Reciprocating parts, Piston rings, Steels, Springs, Compressors, Dimensions, Oil control piston rings, Internal combustion engines, Engine components, Pistons, Reciprocating engines
Publisher	BSI
Committee	MCE/22
ICS Codes	43.060.10 - Engine block and internal components

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BS ISO 6626-1:2024

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