PROPERTIES

MIL-PRF-81322F

TYPICAL

NLGI Grade 2

Oil type

–

Synthetic

Hydrocarbon

Thickener type

–

Microgel

Base oil viscosity

mm² ⁄s

@ –40°C

–

7500

@ 40°C

–

30.5

@ 100°C

–

5.7

Useful operating temperature

–65 to +204

range

°C

–

Drop point

°C

232 min

260+

Worked penetration @ 25°C

269 to 295

275

Unworked penetration @ 25°C

–

271

Bomb oxidation pressure drop

@ 99°C

100 hrs

MPa (psi)

0.083 (12) max

0.027 (4)

500 hrs

MPa (psi)

0.172 (25) max

0.069 (10)

Oil separation @ 177°C

in 30 hrs

% m

2.0 to 8.0

4.7

Water resistance test loss

@ 41°C

% m

20 max

0.5

Evaporation loss in 22 hrs

@ 177°C

% m

10 max

4.3

Anti-friction bearing

performance @ 177°C

hrs

400 min

400+

Load carrying capacity/

Mean Hertz Load

kg

30 min

45

Copper corrosion 24 hr @

100°C

Must pass

Passes

Bearing protection 2 days @

52°C

Must pass

Passes

Colour

–

Amber