1.1 本试验方法涵盖了通过四球磨损试验机对滑动接触中流体润滑剂的抗磨性能进行初步评估的程序。试验方法中详细说明了使用同一机器对润滑脂的评估 D2266 . 1.2 以国际单位制表示的数值应视为标准值。由于本试验方法中使用的设备仅采用kgf单位，因此括号中的国际单位仅供参考。 1.3 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。 1.4 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。 ====意义和用途====== 5.1 本试验方法可用于确定规定试验条件下滑动接触中润滑液的相对耐磨性能。 尚未尝试将此测试与滚动接触的球相关联。本试验方法的使用者应自行确定本试验程序的结果是否与现场性能或其他台架试验机相关。

1.1 This test method covers a procedure for making a preliminary evaluation of the anti-wear properties of fluid lubricants in sliding contact by means of the Four-Ball Wear Test Machine. Evaluation of lubricating grease using the same machine is detailed in Test Method D2266 . 1.2 The values stated in SI units are to be regarded as standard. Because the equipment used in this test method is only available in kgf units, SI units in parentheses are for information only. 1.3 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. 1.4 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. ====== Significance And Use ====== 5.1 This test method can be used to determine the relative wear preventive properties of lubricating fluids in sliding contact under the prescribed test conditions. No attempt has been made to correlate this test with balls in rolling contact. The user of this test method should determine to his own satisfaction whether results of this test procedure correlate with field performance or other bench test machines.