Balanced Gear Pump (from Internet Glossary of Pumps)
Balanced Gear Pump
This is a modification of a regular Gear Pump and all the variations in that pump (number of teeth, size, shape, etc.) are possible here too.

The tubing around the edges of this pump returns pressure -- not liquid -- to opposite sides of the shafts. Very little fluid is transferred anywhere by these extra tubes.

By equalizing pressure on each side of the shafts, friction and wear are both reduced in comparison to the standard gear pump.

Other types of pumps, such as Vane Pumps, sometimes are balanced in similar ways.

(This is a still representation and possibly also a low-resolution image of a pump which is fully animated in the CD-ROM version of this glossary.)

Go to web page describing Statistics Explained

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Last modified February, 2002
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