scope:

EN 4156 specifies the characteristics of adjustable rod ends with self-aligning double row ball bearing and threaded shank in steel, inner ring and balls in corrosion resisting steel. They consist of: - a rod end comprising: - either seals or shields; - an optional longitudinal groove for locking purpose; - an inner ring with balls. These rod ends are intended for use with flight control rods or rods for aerospace structures. They are intended to be used in the temperature range: - 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 according MIL-PRF-23827 type II - very high pressure grease, synthetic hydrocarbons, general purpose (code B), operational range - 54 °C to 177 °C (see EN 2067), according MIL-PRF-81322. - very high pressure grease, lithium type (code C) operational range - 73 °C to 121 °C according MIL-PRF-23827 type I. Their field of application when lubricated with codes A and C grease is limited to 121 °C.