Basic Hydraulic Principles

Hydraulic Swash Plate Pump

A constant displacement hydraulic pump uses a fixed swash plate to drive a set of pistons in and out as they revolve.



At the top of their stroke, the pistons move over the inlet port and draw in fluid at low pressure. The fluid is then carried round and expelled through the outlet port at high pressure as the swash plate drives the piston into the cylinder.

To demonstrate this principle, Sphaera's interactive hydraulic swash plate pump features 8 revolving cylinders that provide a clear indication of hydraulic pressure and flow.

Operation can be viewed at fast or slow speed.

Hydraulic Swash Plate Pump

A constant displacement hydraulic swash plate pump.

More Basic Hydraulics Training Material

For instructors, schools and colleges, Sphaera has developed a range of affordable interactive instructor-led CBT, available individually or as a complete pack.

Click on the links below for more information:


Pascal's Law

A demonstration of Pascal's Law...

Hydraulic Pressure and Force

The relationship between hydraulic pressure and force...

Simple Hydraulic System

How a simple hydraulic system works...


Hydraulic Brakes

An example of a simple interactive hydraulic braking system...

Hydraulic Swash Plate Pump

How a hydraulic swash plate pump works...

Hydraulic NRV (non-return valve)

NEXT: Operation of a hydraulic NRV (non-return valve)...



These and other similar classroom training products can be purchased online now by visiting our training products list.

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