Home / Standards / GB/T 39545.4-2023 GB/T 39545.4-2023 Active Design and selection of components for enclosed gear drives—Part 4: Flexible couplings unbalance classification 闭式齿轮传动装置的零部件设计和选择 第4部分:挠性联轴器平衡等级 Standard Type GBT ICS 21.120 CCS J19 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