dave wrote: > On Mon, 2013-08-12 at 19:14 -0700, Terry Christophersen wrote: > >> Hi all, >> I am reretrofitting a bridgeport that I use for second operations.It has >> 250 line encoders now. >> I would like to upgrade these encoders to say 500 or 1000 line(I am getting >> rid of the 2:1 >> ratio pulleys and going for 1:1 so I have lost 1/2 of my resolution) >> I dont need heidenhains or super expensive ones as this machine is not used >> on >> a daily basis. >> Motor: >> >> SEM MT30-R4 31lb/in >> >> I dont care if it mounts under the cover like the old one or is outside on >> the end of the shaft. >> The orginals were 3 piece(light,wheel,pcb with sensors all open) >> I've been getting HEDS-5640 series encoders from Avago (formerly HP) through Digi-Key. They have a wide variety of hub sizes and disc resolutions available, but some combinations you might want are not made. If Digi-Key doesn't have stock, you can get them from Avnet. But, the Digi-Key web site is the fastest way to find the combo you want.
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