Correction factors for operating conditions

Operating condition Correction factor
Shaft orientation
Vertical C3 0,5
Horizontal 1
Bearing load
P < 0,05 C
C4 1
P < 0,1 C
0,7
P < 0,125 C
0,5
P < 0,2 C 0,3
P < 0,5 C
0,2
P < C
0,1
Reliability
L1 C5 0,37
L10 1
L50 2
Air flow through the bearing
Low C6 1
Moderate 0,3
Strong 0,1
Moisture and dust
Low C7 1
Moderate 0,5
High 0,3
Very high 0,1
Operating temperature
40 °C (105 °F) C8 2
55 °C (130 °F) 2
70 °C (125 °F) 1
85 °C (185 °F) 0,5
100 °C (210 °F) 0,25

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