I have a Proxxon IB/E that has interchangeable aluminium heads (there is a model available which is entirely plastic bodied). The collet shaft is coupled to the motor body with a 'rigid' plastic gear/spline, about 2 1/4" behind the nose bearing. At the nose end, it runs in (what looks like) a metal sealed single race ball bearing and consequently, under moderate finger pressure I can measure 0.003" end float. The spigot is nicely machined and lends itself to mounting in a suitable bracket/clamp. I'm impressed with the overall build quality and it runs nicely throughout the speed range. I bought it with the intention of having a go at milling PCBs, but haven't tried yet (I'm concerned as to whether the end float will be an issue). I have used it for a few jobs as a tool post grinder and drill and I've pleased with the results.
On 01/02/2011 21:54, gene heskett wrote: > I have purchased another z casting for my micro-mill, with has a nominally > 1 and 15/16" bore for the quill to travel in, and have been unable to > determine if its worth the effort and $140 for a Proxxon because even the > peddlers who advertise it cannot tell me if the chuck is rigidly attached > to the motor armature, or runs in its own bearings with some sort of a self > aligning coupling to the motor shaft. -- Best Regards, Richard ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
