Hydraulic System Components: Reservoir,
Filters, Hoses and Coolers Part B (190105b)
Objective #1
Explain the properties of hydraulic fluid and the
criteria for its selection.
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Know/ Don’t know
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Notes
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Functions of hydraulic oil
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· Transmit power
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· Lubricate
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· Seal
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· Cool
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Qualities of hydraulic oil
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Properties of hydraulic oil
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· viscosity
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· viscosity index(VI)
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· Pour point
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· Lubricating ability
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· Oxidation resistance
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· Corrosion and rust
protection
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· Foaming and emulsion
resistance
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Selection of hydraulic oil
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