Yes they are used in aircraft, but are also very commonly used in machine tools to move an X, Y or Z axis. In this case I'm moving the Z axis of a Harbor Freight Mini Mill.
If you have never seen one, they are much like a normal lead screw except there are ball bearings between the screw threads and the nut. This reduces friction considerably but most importantly ball screws can have zero or nearly zero backlash. A ball screw is very efficient. It typically converts 95% of the applied torque to thrust On Tue, Feb 27, 2018 at 8:05 PM, Frank Tkalcevic < [email protected]> wrote: > That ebay ad says "Ball screws are used in aircraft and missiles". What > are > you building? > > > > -----Original Message----- > From: Chris Albertson [mailto:[email protected]] > Sent: Wednesday, 28 February 2018 8:34 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Chinese "C7" ball screws > > On Tue, Feb 27, 2018 at 11:49 AM, Cecil Thomas <[email protected]> > wrote: > > > Chris, > > Could you post the link to the Ebay listing where you bought the ball > > screw? > > I have a couple of applications that might benefit from them. > > > > Here it is once more. One difference I find is the physical size of the > nut. It is larger than the kind that use 15/16 threads. These nuts have > a 48mm diameter flange mount with some not parallel (wedge taper) flats > milled into the 48mm diameter. > > www.ebay.com/itm/Ball-Screw-SFU1605.... > <https://www.ebay.com/itm/Ball-Screw-SFU1605-RM1605- > 1605-Ballscrew-End-Machi > ned-with-Single-Ballnut-CNC/182984365566?epid=28012153006& > hash=item2a9ab7d5f > e:m:mF8BMRqxbajGNo71dHrdHQw> > > The above vendor maintains stock in the US so for met the shipping was just > a few days. > > > > Also, what is the diameter of the nut? > > > > > > Cecil > > > > At 01:47 PM 2/26/2018, Chris Albertson wrote: > > > >> Anyone use these no-brand ball screws in a machine tool? > >> > >> I could not resisted the price. $27 with free shipping for a 16mm > >> diameter by 550mm long ball screw and nut. > >> > >> What I am wondering now is if anyone has first hand experience with this > >> product in a real machine. Mine is a 16mm diameter by 5mm lead screws > >> 550mm total length with an SFU1605 ball nut. > >> > >> > > > > ------------------------------------------------------------ > > ------------------ > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > -- > > Chris Albertson > Redondo Beach, California > ------------------------------------------------------------ > ---------------- > -- > Check out the vibrant tech community on one of the world's most engaging > tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
