SH120 Automatic four ball machine The SH120 automatic four ball machine grease abrasion resistance tester is mainly used to assess the bearing capacity of lubricants under extremely high point contact pressure in the form of Sliding friction. This includes three indicators: maximum non jamming load Pb, sintering load Pd, and comprehensive wear value ZMZ. In practical applications, different evaluation indicators can be selected based on different uses of lubricants. The four
