BS ISO 6626-2:2024

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

Published By	Publication Date	Number of Pages
BSI	2024	40

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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 DFS-C, DFS-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 Designation of a Type DSF-C piston ring in accordance with ISO 6626-2
12	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 5.3.2 Designation of a Type DSF-CNP piston ring in accordance with ISO 6626-2
13	5.4 Type SSF ─ Coil-spring loaded slotted oil control ring with rectangular groove 5.4.1 General features and dimensions 5.4.2 Designation of a Type SSF piston ring in accordance with ISO 6626-2 5.5 Type GSF ─ Coil-spring loaded double bevelled oil control ring 5.5.1 General features and dimensions
14	5.5.2 Designation of a Type GSF piston ring in accordance with ISO 6626-2 5.6 Type DSF ─ Coil-spring loaded bevelled edge oil control ring 5.6.1 General features and dimensions
15	5.6.2 Designation of a Type DSF piston ring in accordance with ISO 6626-2 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 Designation of a Type DSF-NG piston ring in accordance with ISO 6626-2 5.8 Type SSF-L ─ Coil-spring loaded slotted oil control ring with rectangular groove at periphery and V-shaped groove beneath 5.8.1 General features and dimensions
17	5.8.2 Designation of a Type SSF-L piston ring in accordance with ISO 6626-2 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 bevelled edge oil control ring, chromium plated)
20	6.3 Peripheral edges at gap of chromium plated oil control rings 6.4 Spring groove, slot, 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 8.1.2 General tangential force, Ft
24	8.1.3 Actual tangential force, Ft, and tolerance 8.1.4 Normalized tangential force, FN 8.2 Nominal contact pressure, p0 9 Dimensions
39	Bibliography

Additional information

Status	Definitive
Pages	40
Publication Date	2024-07-03
ISBN	978 0 539 17096 2
Standard Number	BS ISO 6626-2:2024
Title	Internal combustion engines. Piston rings – Coil-spring-loaded oil control rings of narrow width made of cast iron
Identical National Standard Of	ISO 6626-2
Replaces	BS ISO 6626-2:2013
Descriptors	Reciprocating parts, Internal combustion engines, Springs, Pistons, Piston rings, Engine components, Compressors, Reciprocating engines, Oil control piston rings, Dimensions, Steels, Grooves
Publisher	BSI
Committee	MCE/22
ICS Codes	43.060.10 - Engine block and internal components

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BS ISO 6626-2:2024

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