scope:

This standard specifies the characteristics of rigid single row ball bearings in steel, cadmium plated, of diameter series 0 and 2 designed to withstand only slow rotations and oscillations under load. They are intended for use between fixed and moving parts of the aircraft structure and their control mechanisms, in particular the mounting of more than one bearing on the same shaft axis, which may require reduced clearances and runouts (axial and radial). The airframe rolling bearings defined in this standard are used from -54°C to +150°C. However, being lubricated with the following greases: - very high pressure grease, ester type (code A), operational range -73°C to +121°C or - very high pressure grease, synthetic hydrocarbons, general purpose (code B), operational range -54°C to +177°C (see EN 3280), their field of application when lubricated with code A grease is limited to +121°C.