If this is your first visit, be sure to
check out the FAQ by clicking the
link above. You will be required to register
before you can post: click the register link above to proceed. To start viewing messages,
select the forum that you want to visit from the selection below.
MAINTENANCE NOTICE: The site will be down for extended maintenance on Sunday, October 2, 2016, between 12 Noon and 6 PM Eastern. We apologize for any inconvenience!
The tapers that the drill chucks mount with are extraordinarily sensitive to any amount of foreign material in them.
It is possible you have a bad machine, but my experience is that it's much more likely to be a dirty mount. I'd recommend removing the chuck, cleaning the tapers, and reinstalling. When cleaning the tapers get them as clean as humanly possible. The female is especially hard to clean, there are special rubber "reamers" made for this purpose if necessary. I like to think of "clean as an operating room" as being the minimum required.