SKF - Rolling Bearings

Designs and variants
1
If the operating conditions differ, the grease
life obtained from the diagrams has to be
adjusted:
• For vertical shafts, use 50% of the value
from the diagram.
• For heavier loads (P > 0,05 C), use the
reduction factor listed in table 5.
Reduction factor for the grease life,
depending on the load
Load P
≤ 0,05 C 1
0,1 C 0,7
0,125 C 0,5
0,25 C 0,2
Reduction factor
Table 5
Grease life for SKF Energy Efficient deep groove ball bearings
where P = 0,05 C
Diagram 2
Grease life L 10 [h]
n d
100 000 m = 100 000
200 000
300 000
400 000
n d m = 40 000
10 000
500 000
600 000
650 000
1 000
100
50 60 70 80 90 100 110 120 130 140 150
Operating temperature [°C]
n = rotational speed [r/min]
d m = bearing mean diameter [mm]
= 0,5 (d + D)
307