This standard specifies the characteristics of single row self-aligning roller bearings in steel of diameter series 3 and 4 designed to withstand only slow rotations, oscillations and/or swivelling under load.
They are intended for use between fixed and moving parts of the aircraft structure and their control mechanisms.
The airframe rolling bearings defined in this standard are used from - 54 ℃ to + 150 ℃.
However, being lubricated with the following greases :
- very high pressure grease, ester type (code A), operational range - 73 ℃ to + 121 ℃ or
- very high pressure grease, synthetic hydrocarbons, general purpose (code B), operational range - 54 ℃ to + 177 ℃ (see EN 3280),
their field of application when lubricated with code A grease is limited to + 121 ℃.
note:1) For new design, use preferably bearings in corrosion resisting steel, see EN 3292
2) See ISO 15
BS EN 3290:1994 history
1994BS EN 3290:1994 Bearings, airframe rolling - Single row self-aligning roller bearings in steel - Diameter series 3 and 4. Dimensions and loads