Wrong machine. Anything with servos is not 100 years old.
You want the Model B. All mechanical. Besides all that, the spindle is lubed through a port to the outside of the spindle housing that rotates and is only lined up with the feed line in one position of the five index positions (it is a five spindle machine). Don't make me get Kirby to take a photo with a Davenport spindle bearing....
Seriously, trust me on this one- I have stood next to them and all their splendid 103 decibel glory (make the bones of your head conduct sufficient vibration that ear plugs don't work). I would lie to you guys but not about this- I would save it up for something more important.... Really.
Hydrodynamic bearings do not work on nor do they need, a pressurized feed. At least beyond the pressure needed to move the fluid into the bearing itself (rule #994: fluids move ONLY because of a pressure differential); gravity feed is fine and dandy. Again, think about it: the pressure supplied to the oil galleys in an engine is never 100 PSI, always less. To push a hydraulic cylinder piston forward within the cylinder, what is required is enough pressure and enough piston area to generate sufficient force to move whatever is resisting it.
Hey, just thought of an excellent example: the wrist pin inside of any engine.... no pressurized lube there but it bears the same pressure as the con rod and main bearings. There ya' go, if pressure was necessary to make a con rod bearing work, how could the wrist pin survive the same amount of force without any pressure? The reason is because of the pressure gradient w/in the oil film.
Brian
In the Davenport machine website a rebuild includes "Lubrication system with motorized pump".
The tech specs for the Davenport HP shows:
"[Constant Low Pressure Lubricator #SB-2446-1
(Ways and Servo Motors)
Required Lubricant
Mobil Vactra (Heavy)
Reservoir Capacity
8 Liters
Lube Pump Output
100 cc/min.
Pressure Setting
25-30 psi
System Voltage
480 V, 50/60Hz 3 Phase, 50 Amp"
Regards, Russell