in compliance with Purity Class acc. to DIN ISO 4406
Impurities in oil is one of the biggest risk factors.
The general assessment of the whole plant – with regard to efficiency, reliability, low maintenance costs and high machine availability – is mainly influenced by having high-quality components, including lubricants and hydraulic media.
If these, usually highly priced, components are damaged by solid contaminants in the hydraulic and lubricating media, this can cause plant disturbance even as far as undesired, sudden and unforeseeable plant standstill.
If the concentration of solid contaminants in lubrication and hydraulic media is noticeably reduced, it can prevent premature component failure.
A low solid concentration in the individual particle sizes for lubrication and hydraulic media ensures that the system works in an economically reliable manner for a long time. The purity of lubrication and hydraulic media is determined according to DIN ISO 4406 (1999).
Examples of standard purity classes are:
- Gear oil 16-14-11
- Hydraulic oil 15-13-10
If desired, all lubricants can be pre-filtered in accordance with DIN ISO 4406 prior to delivery.
-
Purity Classes acc. to ISO 4406
Number of particles per 100 ml
Ordinal number
More than
Up to and including
250.000.000
> 28
130.000.000
250.000.000
28
64.000.000
130.000.000
27
32.000.000
64.000.000
26
16.000.000
32.000.000
25
8.000.000
16.000.000
24
4.000.000
8.000.000
23
2.000.000
4.000.000
22
1.000.000
2.000.000
21
500.000
1.000.000
20
250.000
500.000
19
130.000
250.000
18
64.000
130.000
17
32.000
64.000
16
16.000
32.000
15
8.000
16.000
14
4.000
8.000
13
2.000
4.000
12
1.000
2.000
11
500
1.000
10
250
500
9
130
250
8
64
130
7
32
64
6
16
32
5
8
16
4
4
8
3
2
4
2
1
2
1
0
1
0
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Example
16 - 14 - 11
Particle >4μ
More than
Up to and including
32.000
64.000
16
Particle >6μ
More than
Up to and including
8.000
16.000
14
Particle >14μ
More than
Up to and including
1.000
2.000
11