... , printing machinery, textile machinery, machine tools, automobiles and many other mechanical industries.CategoryThere are various kinds of linear ... miniature (3, 5, 7, 9, 12, and 15mm) and standard (15, 20, 25, and 30mm)2. Multiple precision options: normal (N), ... the mobile access can make the starting friction resistance and dynamic friction resistance become extremely small. Thus, this can help ...