Bearing steel balls have many Grade. According to the grade list in the national standard GB/T308-2002, they are divided into G5, G10, G16, G28, G40, G60, G100, G200, G500, G1000, etc.
G is the first letter of Grade in English, and the following numbers have different levels. The smaller the number, the higher the accuracy and the better the steel ball.
High precision is generally used in precision machinery, auto parts, aerospace and other industries with relatively high requirements, and low precision is generally used in grinding, crushing, stirring and other industries.
Post time: Jan-27-2021