Here is my Jackmaster bench set up using a 1/2 reversible drill driving a Top 11-A cycloid oil pump, plastic tank is a cheap kerosene heater fuel tank. Spinning the drill at 650 rpm (according to Makita) it pushed room temperature 5w20 @25 psi at 3/4 of a litre per minute. Originally I built this set up to filter transmission oil, but that wound up with a Frantz on the car. The Jackmaster was bought for a Ford 2.3 4D55 diesel project that is a long way off, rebuilt engine in the garage and the rusty truck is long gone, so I figured...
why not put it to use? It was a fun project to put together and works better than I expected.