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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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Forge blower repairs
I started today by sleeving the worn end section of the fan shaft . Some
here may recall I was asking about helical gears . Well , I'm not sure how much wear is actually on this gear , but we ain't replacing it . It is an integrally machined part of the fan shaft , so there's no way to replace it without replacing the shaft - and that part ain't available . ANYway , the end of the shaft that carries the thrust bearing - a ball in the end of the shaft - was worn , nominal is .500" and it was under .450" , so I machined it down to just over .4375 and pressed/loctited (red) a .625" OD/.4375" ID sleeve over it . The fan end is worn about .010 under , I'm not sure yet what I'm going to do with it . Probably clean it up with the minimum amount removed , then make a new bushing and sleeve the fan itself . The rest of the blower seems to be in pretty good shape aside from worn keyways . Those will probably get cleaned up and have new oversize keys fitted . The only restriction placed on this project is that he doesn't want the original patina disturbed . He wants it left rusty on the outside . Works for me ... I don't think he plans on using this much , but a hand cranked forge blower could come in handy ... -- Snag |
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