1.1 本规范涵盖了米制系列单排滚柱圆锥滚子轴承的要求。 1.2 预期用途- 本规范中涵盖的轴承拟用于工作温度不超过120℃的一般工业和车辆应用中 °C（250 °F）。 1.3 本规范包含DS3225的许多要求，DS3225最初由国防部开发，由位于里士满的国防供应中心维护。以下政府活动代码可在国防部标准化目录SD-1中找到。 2. 准备活动 保管人 审查活动 DLA-GS4 陆军位于 陆军AV 海军MC 海军-MC，SH 空军-99 空军-84 其他NS 1.4 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers requirements for metric series, tapered roller bearings with a single row of rollers. 1.2 Intended Use— The bearings covered in this specification are intended to be used in general industrial and vehicle applications where the operating temperature does not exceed 120 °C (250 °F). 1.3 This specification contains many of the requirements of DS3225, which was originally developed by the Department of Defense and maintained by the Defense Supply Center in Richmond. The following government activity codes may be found in the Department of Defense, Standardization Directory SD-1. 2 Preparing Activity Custodians Review Activities DLA-GS4 Army-AT Army-AV Navy-MC Navy –MC, SH Air Force-99 Air Force-84 Other-NS 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.