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Analysis of the hydraulic oil contamination and its influence of the operation of the hydraulic

systems. Oil is the central component of any hydraulic system. If a system fails, contamination is one of the major reasons. This article explains the basics of contamination control and serves as a reference and information tool.

Key words: Hydraulic oil, Contamination, Hydraulic System, Filter;

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-1999

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- ISO 4406-1999:

27/21/13, 27 – 21 – 13 –

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- - -1999 28 130.000.000 250.000.00027 64.000.000 130.000.00026 32.000.000 64.000.00025 16.000.000 32.000.00024 8.000.000 16.000.00023 4.000.000 8.000.00022 2.000.000 4.000.00021 1.000.000 2.000.00020 500.000 1.000.00019 250.000 500.00018 130.000 250.00017 64.000 130.00016 32.000 64.00015 16.000 32.00014 8.000 16.00013 4.000 8.00012 2.000 4.00011 1.000 2.00010 500 1.0009 250 5008 130 2507 64 1306 32 64

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- ISO 4406-1999: 23/21/18.

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xn1 -

n2

N1 N2

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N1 N2

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1,01 1,00 %1,11 10,00 %1,5 33,30 %2 50,00 %5 80,00 %

10 90,00 %20 95,00 %75 98,70 %100 99,00 %200 99,50 %

1000 99,90 %

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[3]. Fluid Management Technical Handbook, Argo Hytos, 2009. [4]. Failure Analysis and Parts Evaluation, 11007159 Rev BA, © Danfoss A/S, 2014. [5]. Rexroth Oil Cleanliness Booklet, RE 08016/2011, Bosch Rexroth AG 2011.

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ilangel@tu-sofia.bg –

agentsteel@abv.bg