Fluid Power Basics I & II

Presented by: Ernie Parker

Fluid Power Engineering Technology Instructor

Hennepin Technical College

Sponsored by:

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Reservoirs

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Pumps

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Fluid Conditioners

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Pressure Control Valves

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Relief Valves

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Sequence Valves

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Pressure Reducing

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Unloading Valve

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Counterbalance & Brake Valves

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Flow Controls

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Pressure Intensification

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Directional Control Valves

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Pilot Operated Check Valve Ratios

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Load Sensing

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Accumulators

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Select Components for Hydraulic Application

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Manifolds

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Ft/Sec. = .32 x GPM

Net Area

Proper Line Sizing

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Size the to the proper velocity, but also

make sure that there are not any elbow,

valves, strainers, or any turbulent flow

within the last 10 diameters of the hose.

Flange fittings work the best without any

step sizes.

Inside the reservoir one can flare the end of

the pickup tube for much better flow

characteristics.

When Plumbing an inlet line to a pump

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Life of oil is shorten in half for every 20 degrees F. above 160 degrees.

It is best to stay at or under 140 degrees at all times.

Think safety also. This does not mean that the oil goes to 200 degrees and

then you cool. It means never let it get above 140 degrees.

Filters also work better with cooler oil.

Geroler motors will fail quickly when the viscosity drops below 70 SUS.

Seals will last much longer.

Running transmission fluid into the radiator actually heats the fluid.

There should be a separate cooler for that fluid and not run into an

engine radiator.

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Thanks to our industry partners for their contribution with

this presentation:

Eaton/Vickers Corporation

&

The International Fluid Power Society

Special Thanks

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