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AMS 4640 Al-Ni-Br Bushing - Mat'l Allowables

AMS 4640 Al-Ni-Br Bushing - Mat'l Allowables

AMS 4640 Al-Ni-Br Bushing - Mat'l Allowables

(OP)
Can anyone tell me where I can find the bearing allowable for AMS 4640 aluminum nickel bronze? I am trying to analyze a bushing installation in a lug. Thanks

RE: AMS 4640 Al-Ni-Br Bushing - Mat'l Allowables

combatindex.com/mil_docs/pdf/std/1500/MIL-STD-1599.pdf

4.3.4.2.2.2 Dynamic capacity. Dry-film lubricated bearings have high dynamic
capacity up to 50,000 psi unit loading, but life is difficult to predict due to
wear through the thin coating. Accordingly, they are best used in joints which
are relatively static under load with only incidental rotation or misalignment
motion. Bronze race bearings will provide essentially unlimited service life
when loaded Up to 13000 psi, properly lubricated and operated at 10CPM maximum.
For shorter, finite life at higher loads, stress values from figure 201-14 can
be used with the bearing race projected area. Bearings using beryllium copper
balls are rated at 30,000 psi to 40,000 psi, depending on whether rotation is
at the spherical surface or in the bore, and whether ball is clamped or free to
rotate on the pin.

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