Home / Standards / GB/T 299-2023 GB/T 299-2023 Active Rolling bearings—Double-row tapered roller bearings—Boundary dimensions 滚动轴承 双列圆锥滚子轴承 外形尺寸 Standard Type GBT ICS 21.100.20 CCS J11 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A