The ball-on-disc is the most commonly used configuration in the friction tests. However, the sliding speed is usually lower than 5 m/s, which limits the research on the mechanisms of ultrahigh-speed friction and wear. The end run-out and the eccentric mass of disc are the main factors that limit the sliding speed of ball-on-disc test. In this study, the combined solution of on-line precision cutting and in-situ dynamic has been proposed to obtain the ultrahigh sliding speed. An ultrahigh-speed ball-on-disc tribometer with the maximum sliding speed of 50 m/s has been developed. The steady loading and friction force curves for the three kinds of selected typical engineering materials prove that the developed tribometer has the ability to implement the ultrahigh-speed friction test. The test results in the wide range of sliding speed present the necessity and feasibility of ultrahigh-speed friction test.

圆盘球是摩擦测试中最常用的配置。然而，滑动速度通常低于5 m / s，这限制了对超高速摩擦和磨损机理的研究。圆盘的末端跳动和偏心质量是限制圆盘球测试的滑动速度的主要因素。在这项研究中，提出了在线精密切割和原位动态的组合解决方案以获得超高的滑动速度。已开发出最大滑动速度为50 m / s的超高速圆盘摩擦计。三种选定的典型工程材料的稳定载荷和摩擦力曲线证明，开发的摩擦计具有执行超高速摩擦试验的能力。