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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Q: Bridgeport Mill - Replacement motor like this?
Ok, so it's a 2J varispeed head... I'm thinking... out loud... screw the varispeed with the expensive belt and the incredibly expensive replacement motor - the mill has no motor or varispeed pulley for the motor. Why not a standard motor of requisite HP mounted on a plate where the US Motor motor would usually go OR a random US Motor mill motor of 1.5 to 2 HP, standard pulley (I can always make one on the lathe...) AND a VFD?? Best of all worlds? Or nightmare? Comments? VFDs - what freq range is *necessary*? to 200Hz, to 400Hz?? If the motor is a 3450 RPM going from 50Hz to 200Hz makes that sucker run damn fast!! ;_) What am I missing here...? I think the mill has a high/low lever that is in the lower part of the head... so I'd still have two ranges... yes? _-_-bear |
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