Ball bearings - Oil Flow Calculation

[iucu]

I have a Shaft on 2 SKF bearings (6005 - Dia25/Dia47/12 and 6207 - Dia35/Dia72/17). Shaft is driven by a dyne at max speed 12,000 rpm. How to calculate the passage oil diameter (in housing) and the oil flow (l/min) for a correct lubrication of bearings ? Oil used is ATF.

 

[Fugeguy]

For flow see:

http://www.koyousa.com/koyocatalog/technical/09/9_3_b.htm

(spreadsheet attached)

For diameter see:

http://www.1728.com/flowrate.htm

Then I'd just do a quick Reynolds number to be sure you're well within the laminar range.

http://www.efunda.com/formulae/fluids/calc_pipe_friction.cfm

Hope that helps.