Information about Gear Pumps

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About Gear Pumps

Gear pumps are positive displacement rotary pumps used to transport high pressure and high volume flows. They function through the use of two or more internal gears that create vacuum pressure, propelling the fluid media. Typically a rotating assembly includes a driving gear and a driven gear. As each tooth of the gear makes contact, the load moves to the next tooth and fluid moves with each contact. Internal gear pumps or “gear within a gear” pumps may have their smaller gear turning in the same direction as the larger gear, creating suction to move the pumped fluid media. At various points during the process of turning, the gears create a seal between the inlet and outlet sides of the rotation assembly chamber or body.

Products & Services Related to Gear Pumps

DC Powered Pumps

DC powered pumps use direct current from motor, battery, or solar power to move liquids such as acids, chemicals, lubricants and oil, as well as water, wastewater, and potable water.

Dosing Pumps

Dosing pumps are low-volume fluid pumps with controllable discharge rates used to inject additives into the mixing or pumping system.

Magnetic Drive Pumps

Magnetic drive pumps are sealless pumps that use a coaxial magnetic coupling to transmit torque to an impeller. A standard electric motor drives a set of permanent magnets that are mounted on a carrier or drive assembly.

Plastic Pumps

Plastic pumps are designed to move fluids that would corrode or damage other types of pumps. They provide broad chemical resistance and are less costly and lighter in weight than metal pumps.

Positive Displacement Pumps

Positive displacement pumps use a mechanical force such as gears, bladders, pistons, plungers or diaphragms to push liquid through and out of the pump.

Sanitary Pumps

Sanitary pumps are used to transport and meter solutions, slurries, and colloids of food and agricultural materials in operations such as food processing that require cleanliness. There are four basic types of sanitary pumps: centrifugal, positive displacement, jet, and airlift.

Syringe Pumps

Infusion or withdrawal syringe pumps provide high pressure and high accuracy for applications such as high performance liquid chromatography (HPLC). Used to deliver precise amounts of fluid at specific time intervals.

Engineering Web: Gear Pumps - Machine Design

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Gear pumps \| Machine Design Gear pumps February 21, 2002 Printer-friendly version
The pumps that could, and did \| Machine Design starting my first job in the gear-pump business, among the helpful advice offered by the old timers was that gear pumps would one day be obsolete,
Plain-bearings2 \| Machine Design Plain bearings are replacing rolling-element bearings in many applications, such as hydraulic gear pumps.

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