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Thank you. You were very detailed in how you did your test. The manual states that the spindle air pressure should be set at 17#. But with a 12k or 15k spindle it should be 20# and I have a 15k spindle. The amount of oil can be changed in the settings page on my machine. Parameter #820. My machine came set from the factory as follows.......at 8 minute intervals the air solenoid opens and cycles for 10 seconds. I watched and in the sight glass 1 drop of oil is dispersed into the line...and a very small one at that. Manual says that 1 drop is .011cc. So.....60 minutes in one hour divided by 8 minute intervals = 7.5 drops per hour. 7.5 drops x .011cc = ONLY .082cc per hour. That does not sound like enough to me BGL... and my bearings sounded bad...but I caught it in time. I moved my settings to a 15 second cycle (2 drops) every 2 minutes. So now I am getting 60 drops per hour or .011 x 60 = .66cc per hour. A hell of a lot different than factory settings. I think I am still too light on this amount also but it is quiet and runs well with excellent finish on aluminum at 14750 RPM....Sandvik tooling.
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