PROPERTIES

BMS 3-33A

TYPICAL

Oil type

Synthetic

Synthetic

hydrocarbon/Ester

hydrocarbon/

Ester

Thickener type

Lithium

Lithium

Complex

Complex

Base oil viscosity

mm²/s

@

–40°C

–

1840

@

40°C

–

14.2

@ 100°C

–

3.4

Useful operating temperature

–73 to +121

–73 to

range

°C

+121

Drop point

°C

–

216

Worked penetration @ 25°C

265 to 315

297

Unworked penetration @ 25°C

–

290

Bomb oxidation pressure drop

from 758 kPa (110 psi) @ 99°C

@ 100 hr

kPa (psi)

70 (10) max

3.5 (0.5)

@ 500 hr

kPa (psi)

105 (15) max

34 (5)

Oil separation @ 100°C,

30 hr

%m

–

2.0

Water resistance test loss

(79°C)

%m

7.5 max

< 6

Evaporation loss,

500 hr @ 121°C

%m

10 max

< 10

Mean Hertz Load

kg

–

60

Antifriction bearing performance

@ 121°C

hrs

–

1200 +

Copper corrosion 24 hrs @

100°C

Must pass

Passes

Bearing protection 2 days @

52°C

Must pass

Passes

Colour

Blue-green

Green

U.S.

Approved MIL-PRF-23827C (Type I)

British

–

French

–

Russian

–

NATO Code

G-354

Joint Service Designation

–

Boeing

Approved BMS 3-33A