The meaning of the WA grinding wheel mark is that the abrasive material of the grinding wheel is white corundum grinding wheel.
In the identification of the grinding wheel, "WA" is an important mark, which indicates the abrasive material of the grinding wheel. Specifically, "WA" represents white corundum grinding wheel, which is a commonly used grinding wheel material suitable for a variety of grinding applications. In addition, the size and grit of the grinding wheel are also important information in its identification. For example, the group of numbers "400×40×127" indicates the size of the grinding wheel, including the outer diameter, thickness and aperture, while "60" indicates the grit of the grinding wheel, that is, 60# grit, which usually means that the grinding wheel is suitable for finer grinding work.