Gear pumps use the meshing of gears to pump fluid by displacement. Gear pumps are one of the most common types of pumps for hydraulic fluid power applications. There are two main variations; external gear pumps which use two external spur gears, and internal gear pumps which use an external and an internal spur gear. Gear pumps are fixed displacement, meaning they pump a constant amount of fluid for each revolution. Some gear pumps are designed to function as either a motor or pump.

Gear pumps are positive displacement rotary pumps used to transport high pressure and high volume flows.

Gear pumps are available with a number of features that help sustain their service life cycle and enhance overall performance.

Gorman-Rupp Gear Pumps

OTS Pumps Gear Pumps