Journal bearing service life
Shaft diameter D
10
-3
m
Bearing length L
10
-3
m
Radial clearance dR
10
-3
m
Wear depth h
10
-3
m
Bearing load F
N
Specific wear rate k
10
-15
m
2
/N
Sliding velocity
v
m/s
stationary
non-stationary
Average contact pressure p=F/(LD)
MPa
Pressure Velocity value PV
MPa
·
m/s
Contact angle φ
deg
Wear volume V
10
-9
m
3
Sliding distance s=V/(k
·
F)
10
3
m
Service life t=s/v
hour
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