I am doing an experiment testing different types of gears, the gears are fairly small, with gear 1 being approx. 35mm in diameter and gear 2 being 45mm in diameter, and both are meshed together, there are also around 15mm wide. the gears will be rotating at a max speed of 2000 RPM also. I want to test a lot of the same gears with different constrains, but want the lubrication to remain the same, since these gears tangential velocity are not that fast, many suggest Grease as lubrication, but I want to use the exact same amount of grease each time I test the gears so it does not affect the results, another maybe the oil bath method, which will allow me to put an exact amount of oil each time however might seem a bit overkill for gears which are so small.
does anyone know Which method of lubrication will be better and if it is grease, what are the suggestions to make sure I use the exact same amount each time so It does not affect the results.