This series circular gear pump applies to delivering non-corrosive lubricating-oil or equivalent liquid without solid particles and fibres at temperature below 80 centigrade and with the viscosity of5*10-6--1.5*10-3m2/s(5--1500cst).

It applies to hydraulic system, too. And It can give performance as transferpump or booster pump in oil delivery system and a fuel pump for delivery, pressuriza-tion and injectiion in fuel supply system. It can be also applied as hydraulic pump suppiying hydraulic power in hydraulic system and in all industry fields as lubricating pump.