Gear pumps are simple and economical pumps. These pumps create pressure through the meshing of the gear teeth, which forces fluid around the gears to pressurize the outlet side. For lubrication, the gear pump uses a small amount of oil from the pressurized side of the gears, bleeds this through the hydrodynamic bearings, and vents the same oil either to the low pressure side of the gears, or through a dedicated drain port on the pump housing. Some gear pumps can be quite noisy, compared to other types, but modern gear pumps are highly reliable and much quieter than older models. This is in part due to designs incorporating split gears, helical gear teeth and higher precision/quality tooth profiles that mesh and unmesh more smoothly, reducing pressure ripple and related detrimental problems. Another positive attribute of the gear pump, is that catastrophic breakdown is a lot less common than in most other types of hydraulic pumps. This is because the gears gradually wear down the housing and/or main bushings, reducing the volumetric efficiency of the pump gradually until it is all but useless. This often happens long before wear causes the unit to seize or break down.  Gear pump housings can be rebuilt but often times it will be less expensive to buy a new one.

Please call to speak to one of our specialist for direction as to which gear pump will be best suited for your application.

gear pump drawing website

Gear Pumps

Gear Bearing Pump

Gear Pumps

GEAR PUMP MHP76 Through Drive Gear Pump

MK20 Gear Pump 

MK20 Gear Pump

Gear Pumps

ML51_GearPump

Gear Pumps

P30_GearPump_SOLO