We have a Haas TM2P with the 10k rpm grease packed spindle, which produces a high pitched whine from the spindle bearings (nothing out of the ordinary for this spindle, per the HFO techs). The VF3 sitting next to the TM is just about silent at 10k rpm, which is mostly from the oil lubricated spindle.
Of course the greased TM spindle will never be as quiet as the VF spindle, but does anybody have any tricks to quiet down this 10k TM grease lubed spindle? I asked the HFO tech about it, and got the standard response of "it's just louder than the VF, and you void your warranty if you try a different grease".