Partial grooved Aerostatic journal bearing
Calculation of load capability and flow
1)
Shaft diameter D
10
-3
m
Supply pressure p
s
10
5
Pa
Ambient pressure p
a
10
5
Pa
Viscosity η
10
-6
Pa·s
Gas constant R
m
2
/s
2
K
Temperature T
K
radial clearance dR/R
Number of grooves k
Bearing length L
0
/D
Groove length L
1
/L
0
Groove width B
1
/B
0
Groove depth h
1
/h
0
Shaft eccentricity ε=e/dR
Dimensionless load F'(ε)
Pressure factor ß
0
(ε=0)
Reynolds number Re<500...1000
Load capability F(ε)
N
Mass flow rate M(ε)
10
-6
kg/s
1)
Symmetrical bearing
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