Ulvac PKS-016, Instruction Manual

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14. Pump Oil Characteristics Table
(Table-1) shows the characteristics of pump oils. If you could not get the
specified oil ULVOIL-R-7, you may use another kind of pump oil having almost the
same characteristics as (Table-1).
ROTARY VACUUM PUMP OIL
[Table - 1]
OIL ULVOIL-R-4 ULVOIL-R-7
Component (%)
Saturated
Hydrocarbon 85
Unsaturated
Hydrocarbon 15
Saturated
Hydrocarbon 85
Unsaturated
Hydrocarbon 15
Molecular weight 400
〜
420 450
〜
470
Specific Gravity
at 15
℃
0.89 0.89
Viscosity 37.8
℃
(Centi stokes) 98.9
℃
40
〜
50
5
〜
7
65
〜
75
7
〜
9
Viscosity 50
℃
(Redwood second) 80
℃
100
〜
120
>50
170
〜
180
> 60
Pour Point (
℃
) -15
℃
-15
℃
Fire Point (
℃
) > 210 > 210
Acid Value (mg KOH/gr) < 0.01 < 0.01
Residual Carborn (%) < 0.05 < 0.1
Vaporized Componemt (%)
98
℃
x 5hr
< 0.03 < 0.02
Vapour Pressure (Torr) < 1 X 10
-4
< 1 X 10
-5