1.1 本试验方法涵盖了极压（EP）润滑油的摩擦系数及其承受高频线性振荡运动时的抗磨能力。该测试利用了滚轴-盘几何结构，其中滚轴与振荡运动倾斜/偏转10°。该程序与DIN 51834第4部分中所述的程序相同。 1.2 该试验方法也可用于确定非EP润滑油在类似试验条件下的耐磨能力及其摩擦系数。 1.3 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。 1.4 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。 1.5 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EP润滑油在指定用于滑动的选定温度和负载下的抗磨性能和摩擦系数- 滚动接触，其中在初始高赫兹线接触压力下长时间存在高速振动或启停运动。它已被用作齿轮、滚动轴承或凸轮/从动件系统中使用的润滑剂的筛选测试。该测试方法的用户应确定结果是否与现场性能或其他应用相关。根据试验方法，将其与球盘几何形状进行比较 D6425 ，在该滚轴-盘几何形状中，初始接触压力在测试时间内保持得更好。

1.1 This test method covers an extreme pressure (EP) lubricating oil’s coefficient of friction and its ability to protect against wear when subjected to high-frequency, linear oscillation motion. The test utilizes a roller-on-disc geometry, where the roller is inclined/deflected by 10° to the oscillating movement. The procedure is identical to that described in DIN 51834, Part 4. 1.2 This test method can also be used to determine the ability of a non-EP lubricating oil to protect against wear and its coefficient of friction under similar test conditions. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. 1.5 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 antiwear properties and coefficient of friction of EP lubricating oils at selected temperatures and loads specified for use in slip-rolling contacts in which high-speed vibrational or start-stop motions are present for extended periods of time under initial high Hertzian line contact pressures. It has found application as a screening test for lubricants used in gears, rolling bearings or cam/follower systems. Users of this test method should determine whether results correlate with field performance or other applications. In comparison to the ball-on-disk geometry as per Test Method D6425 , the initial contact pressure is better retained over test time in this roller-on-disk geometry.