[wms]

StampCraft,

It is probably just the accumulation of the air/ oil mist that is use to lubricate the spindle bearings.

If you look on the back, below the electrical control cabinet , you will see a small round filter, in an aluminum housing. It will be next to or behind the lube tank. This is where the lube oil is picked up thru a metering device and mixed with air and then blaster thru the spindle cartridge to lubricate the bearings.

This is normal to see droplets of oil from time to time...It happens more when the spindle is run at certain speeds for a long time.

It is also more noticeable when you are running dry. As when you run wet the coolant washes away the droplets.

Unless it is running out of there at a fair rate I would not be to concerned.

There also is an air valve that controls the amount of air that is mixed with the lube oil and shot thru the spindle cartridge. If you look in the manual your will find it and it's setting . They are at different location on different year machines. Most of the time they are directly behind the regular air regulator ( where the air line is hooked up to the machine) or they could be under the spindle head cover.