Home / Standards / GB/T 6445-2007 GB/T 6445-2007 Abolished Rolling bearings - Needle roller bearing track rollers - Boundary dimensions and tolerances 滚动轴承 滚轮滚针轴承 外形尺寸和公差 Standard Type GBT ICS 21.100.20 CCS J11 Status 废止 Issue Date 2007-02-28 Implementation 2007-10-01 Responsible Dept 中国机械工业联合会 Drafting Unit 中国机械工业联合会