DIN EN 2755:2022-02 航空航天系列 带自润滑衬里的耐腐蚀钢球面滑动轴承 环境温度下的升高载荷 技术规范
Aerospace series - Bearing, spherical, plain in corrosion resisting steel with self-lubricating liner - Elevated load at ambient temperature - Technical specification; German and English version EN 2755:2021