Adaptable: modular design permits prompt pump assembly to suit the exact specification required for a given application. Rugged: large diameter shafts, mounted in precision tapered-roller bearings and rigidly mounted for maximum shaft stiffness, to resist over-pressure and other kinds of rough use. Low Maintenance: shaft, bearing and gear assemblies are immersed in an oil bath, for long life even at the pump's limits of operating pressure and temperature. Fully interchangeable rotors avoid the need for routine re-timing, but the timing gears are easily accessible if re-timing should become necessary.