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This specification covers airframe plain spherical bearings utilizing a beryllium-copper ball and corrosion resistant steel outer race for use between -65°F and +350°F.

This specification defines the requirements for fiber reinforced plastic (FRP) composition plain and flanged sleeve bearings that are self-lubricating and which are compatible with graphite-epoxy composites.

This specification defines the requirements for fiber reinforced plastic (FRP) composite plain and flanged sleeve bearings that are self-lubricating and which are compatible with graphite-epoxy composites.

This specification covers plain spherical bearings which are self-aligning and self-lubricating by incorporating polytetrafluoroethylene (PTFE) in a liner between the ball and race (outer ring). PTFE is incorporated in a fabric or composite material bonded to the ID of the outer ring, or in a composite material molded into a pre-formed cavity between the inner and outer ring. These bearings are for use in the temperature range -65°F to +325°F (-54°C to +163°C.)

This specification covers airframe all-metal plain spherical bearings which are self-aligning for use between -65° F and 250° F.