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Product Code:SAE J2003
Title:Internal Combustion Engines--Piston Rings Coil Spring Loaded Oil Control Rings (Cancelled Jun 2008)
Issuing Committee:Piston And Ring Standards Committee
Scope:This SAE Standard is equivalent to ISO Standard 6626.Differences, where they exist, are shown in the appendix with associated rationale.This document specifies the essential dimensions of piston ring types DSF-C, DSF-CNP, SSF, GSF, DSF, DSF-NG, and SSF-L coil spring loaded oil control rings.For the cast iron part the recommended material is class 10 according to SAE J1590. For special applications material classes 20 to 50 may be used.Variation in face design and spring groove from these may be used, as recommended by individual manufacturers, in plain or chromed versions.The tangential forces of coil spring loaded oil control rings can be varied over a wide range. Explanations and recommendations are given in Section 6.The normal range for axial width of coil spring loaded oil control rings (3 to 8 mm inclusive) is divided into 0.5 or 1.0 mm steps. In Tables 9 to 14 dimensions are given for coil spring loaded oil control rings within an axial width of 4.75 mm (i.e., 3/16 in) for existing applications in inch units.This document applies to coil spring loaded oil control rings up to 200 mm inclusive for reciprocating internal combustion engines. It may also be used for piston rings of compressors working under similar conditions.

标准名称：	铁路程控共线电话设备 主控机技术要求及试验方法
中标分类：
发布部门：	中华人民共和国铁道部
发布日期：	2000-03-29
实施日期：	2000-11-01
首发日期：
作废日期：
主管部门：	中华人民共和国铁道部
提出单位：	北京二七通信工厂科研所
归口单位：	北京二七通信工厂科研所
起草单位：	北京二七通信工厂
起草人：	葛鹰龙、邱和芳
出版社：	中国铁道出版社
出版日期：	2000-11-01
页数：	13页

本标准规定了铁路程控共线电话设备主控机的基本性能、技术要求和试验方法。
本标准适用于铁路程控共线电话设备主控机的设计、生产、检验，也适用于现场维修。

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