I looked at the Copely servo tube actuators and I have some pricing on them. They are roughly twice the price as a similarly enclosed ball screw actuator, but the bearing support really can't handle any load so you end up adding linear rails and bearings along with the servo tube unit. I think the Copley servo tube needs a redesign as lubrication free and linear servo speeds really don't go together.
But, Thanks for looking around! :-) Dave On 6/19/2011 5:28 PM, Glenn Edwards wrote: > Missed that, and I agree that bushing-style linear bearings do not measure > up for linear motors. > > -----Original Message----- > From: andy pugh [mailto:[email protected]] > Sent: Sunday, June 19, 2011 1:56 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Linear Servo Motors > > On 19 June 2011 21:21, Glenn Edwards<[email protected]> wrote: > > >> However, ALL linear motors require >> accurate and stiff linear bearings to keep the moving part of the >> linear motor from ever contacting the stationary part. >> > The Copley one claims to incorporate a linear bearing for moving-rod > applications. I admit that the phrase "lubrication free" rings alarm bells > though > > -- > atp > "Torque wrenches are for the obedience of fools and the guidance of wise > men" > > ---------------------------------------------------------------------------- > -- > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image Editing > and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > > ------------------------------------------------------------------------------ > EditLive Enterprise is the world's most technically advanced content > authoring tool. Experience the power of Track Changes, Inline Image > Editing and ensure content is compliant with Accessibility Checking. > http://p.sf.net/sfu/ephox-dev2dev > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ EditLive Enterprise is the world's most technically advanced content authoring tool. Experience the power of Track Changes, Inline Image Editing and ensure content is compliant with Accessibility Checking. http://p.sf.net/sfu/ephox-dev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
