On 5/14/2015 8:03 PM, Gene Heskett wrote: > So, compared to a timing belt (not actually needed, my encoder is on the > load side of any slippage), the space for the input pulley is restricted > to something just under 2" in diameter, how would the smallest 5 groove > 12.7mm wide pulley/belt combo compare in terms of how much power it > could move, when compared to the just barely above the KT boundary tooth > profile the OEM pulleys and 10mm wide belts can move?
I'd definitely do the mod to cap the bottom of the headstock to convert it to a splash lube. Why buy a complete headstock instead of just new bearings and the metal gears to put in the original while you mod it for oil bath? 'Course you'll also want an easy to access drain plug. :) If you want a more rigid connection to the bed, see if there's enough metal in the hole-less corner to drill and tap a 4th hole. The 7x lathe not made by SIEG Industrial (formerly Shanghai Import Export Group) is/was better in several details. Four headstock bolts instead of three. A heavier, rectangular saddle instead of SIEG's H shape. Way wipers. A thicker apron with dual ball bearings on the hand crank shaft. A locking adjuster nut on the right end of the lead screw. Longer bed - prompting SIEG to offer longer beds, including one even longer than the competition, which LMS sells as an upgrade kit. The rest of it, pretty much identical to SIEG's 7x. That manufacturer also was using PWM motor control boards while SIEG was still using a more primitive SCR chopper. Grizzly 7x10 #346 I owned had a *very* primitive and quite buzzy control board, no integrated circuits. One large resistor had been hot enough to unsolder itself at one end. A little hit with an iron and it was back in action. Quite poor low speed torque. The better lathe costs more and most importers that started with it (like Homier) either switch to a SIEG version or quit selling a 7x lathe. My first metal lathe was a Homier "Speedway" 7x12, chuck to tailstock, between centers was 14". Unlike the common 7x10 which is only 8" chuck to tailstock. The LMS bed upgrade stretches out to 14" chuck to tailstock. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
