Gene, I just did a teardown of my HF 12x36, and replaced the spindle bearings. What I found sickening, was that there was NO oiler hole for the rear bearing, and the front bearing's oiler hole was drilled to the wrong side of the bearing, and was mostly covered by the bearing cup.
I uploaded pictures to Flickr if anybody is interested. https://www.flickr.com/photos/46689581@N03/18128737943/in/album-72157652150681293/ On 06/13/2015 08:38 PM, Gene Heskett wrote: >> I would not trust the Grizzly spindle bearings @ 6000 rpm unless I had >> removed, checked fit, regreased and set the bearing preload. > And TBT, these are horrible, 15 minutes no load at 1600 revs raised the > quill temp 25F on my IR thermometer. I am repeating the breakin > procedure, but I doubt if it will do much good, I believe them to be > seriously preloaded way too high. > > IMO, decent bearings are a must, but you do not get those in a $850 > machine. So no complaints to Grizzly unless I can't find decent bearings > a year down the log. > > -- MC Cason Eagle3D - Created by Matthias Weißer github.com/mcason/Eagle3D ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
