life extension tables.pdf
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7/18/2019 Life extension tables.pdf
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LIFE EXTENSION TABLE – PARTICLES
Example shows going from an oil cleanliness of 17/14 to12/9 will
give 4 times the life in bearings in a hydraulic system
EXAMPLE
20/17 19/16 18/15 17/14 16/13 15/12 14/11 13/10 12/9 11/8 10/7
26/23 5 3
4 2.5
7 3.5
4.5 3
9 4
6 3.5
>10 5
6.5 4
>10 6
7.5 5
>10 7.5
8.5 6.5
>10 9
10 7
>10
>10
>10 9
>10
>10
>10 10
>10
>10
>10
>10
>10
>10
>10
>10
25/22 4 2.5
3 2
5 3
3.5 2.5
7 3.5
4.5 3
9 4
5 3.5
>10 5
6.5 4
>10 6
8 5
>10 7
9 6
>10 9
10 7.5
>10
>10
>10 9
>10
>10
>10
>10
>10
>10
>10
>10
24/21 3 2
2.5 1.5
4 2.5
3 2
6 3
4 2.5
7 4
5 3
9 5
6.5 4
>10 6
7.5 5
>10 7
8.5 6
>10 8
9.5 7
>10 10
>10 8
>10
>10
>10 10
>10
>10
>10
>10
23/20 2 1.5
1.7 1.3
3 2
2.3 1.5
4 2.5
3 2
5 3
3.7 2.5
7 3.5
5 3
9 4
6 3.5
>10 5
7 4
>10 6
8 5
>10 8
10 6.5
>10 9
>10 8.5
>10
>10
>10 10
22/19 1.6 1.3
1.4 1.1
2 1.6
1.8 1.3
3 2
2.3 1.7
4 2.5
3 2
5 3
3.5 2.5
7 3.5
4.5 3
8 4
5.5 3.5
>10 5
7 4
>10 6
8 5
>10 7
10 5.5
>10
>10
>10 8.5
21/18 1.3 1.2
1.2 1.1
1.5 1.5
1.5 1.3
2 1.7
1.8 1.4
3 2
2.2 1.6
4 2.5
3 2
5 3
3.5 2.5
7 3.5
4.5 3
9 4
5 3.5
>10 5
7 4
>10 7
9 5.5
>10 10
10 8
20/17 1.3 1.21.2 1.05
1.6 1.51.5 1.3
2 1.71.8 1.4
3 22.3 1.7
4 2.53 2
5 33.5 2.5
7 45 3
9 56 4
>10 78 5.5
>10 910 7
19/16 1.3 1.2
1.2 1.1
1.6 1.5
1.5 1.3
2 1.7
1.8 1.5
3 2
2.2 1.7
4 2.5
3 2
5 3
3.5 2.5
7 4
5 3.5
9 6
7 4.5
>10 8
9 6
18/15 1.3 1.2
1.2 1.1
1.6 1.5
1.5 1.3
2 1.7
1.8 1.5
3 2
2.3 1.7
4 2.5
3 2
5 3
3.5 2.5
7 4.5
5.5 3.7
>10 6
8 5
17/14 1.3 1.2
1.2 1.1
1.6 1.5
1.5 1.3
2 1.7
1.8 1.5
3 2
2.3 1.7
4 2.5
3 2
6 3
4 2.5
8 5
6 3.5
16/13 1.3 1.2
1.2 1.1
1.6 1.5
1.5 1.3
2 1.7
1.8 1.5
3 2
2.3 1.8
4 3.5
3.7 3
6 4
4.5 3.5
15/12 1.3 1.2
1.2 1.1
1.6 1.5
1.5 1.4
2 1.7
1.8 1.5
3 2
2.3 1.8
4 3.5
3 2.2
New Cleanliness Level (ISO Code)
Current
Machine
Cleanliness
(ISO Code)
Hydraulics
and Diesel
Engines
Rolling
Element
Bearings
Journal
Bearings &
TurboMachinery
Gear
Boxes
&Other
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Rolling Element BearingsMacpherson Curve
Relative
Fatigue
Life
Filter Removal Rating (µm)403020103
16
14
12
10
8
6
4
2