> My suggestion is to just replace the pinion as most of the wear is > there. At some point it maybe necessary to replace the rack as > well. > Of course if the amount of engagement is adjustable there may > well be a > lot more service gotten out of the pinions as well. > > > Doug
Doug, this has been my MO for a couple years now but the Rack finally wore to the point of point loading the pinions so I said enough.. I've got replacement Rack already in the shop so I'll use it but I won't be installing it again.. next time it wears out I'll have the parts here to upgrade to ballscrews. Over time the increased roughness of movement destroys the ability to get a decent surface finish so, I'm confident that the upgrade to ballscrews will significantly improve this over the long run. Not to mention stepping up the o/a accuracy of the machine. Btw, the pinons are pressure loaded into the rack using a gas shock. It's just enough load to overcome the max seperation pressure created by the rack [to seperate the pinon from the rack] This take into account wear and any possible miss alignment etc of the rack. It's not optimum but has worked thus far.. The ballscrew is a good upgrade for me.. can't wait to get it done :) J. Johnson ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
