Magnatex mag drive and mech seal gear pumps are constructed to handle flows from 0.5 to 30 GPM at 1750 RPM. The range of working pressures is from 1 to 150 PSI. These pumps have slotted bearings to lubricate shaft and gear surfaces, and there is hydraulic porting to balance axial thrust and to reduce wear. There are gear and bearing combinations of metallic and non-metallic wear surfaces, in addition to ample port fixing to minimize risk of cavitation when inlet pressure is marginal.