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Edmonton- Small lathe/milling work; Advice, insight, recommendation?
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<blockquote data-quote="PeterT" data-source="post: 43756" data-attributes="member: 22"><p>I rotated the picture for you. </p><p></p><p>But I'm still confused. Are you wanting a new inner (smaller) shaft machined to your dimensions & then you will be removing the large diameter magnetic? element and similarly attaching that to new shaft? Does the existing small shaft go straight through the large element? If so then you will need to define total length (inclusive of the big element). Or do you mean RE-machine the small shaft element on right hand side & the left shaft segment is just for info purposes? If so does the shaft have conical center drills cones in either end from original machining</p><p></p><p>I'm no motor expert by any stretch but some smaller ones I've seen, the shaft is either integral or stuck on really well with interference fit & retaining compound, because all the power is transmitted through that surface & the motor must withstand heat.</p><p></p><p>It would be more useful to others to specify the bearings being used because that will then define both the diameter and allowable tolerances. And be really certain about your fits because, if I understand correct, 13.60-13.50=0.1mm = 0.004" (sorry I have to think IMP) that is a healthy wide allowance for gear bore ID : shaft OD fit.</p></blockquote><p></p>
[QUOTE="PeterT, post: 43756, member: 22"] I rotated the picture for you. But I'm still confused. Are you wanting a new inner (smaller) shaft machined to your dimensions & then you will be removing the large diameter magnetic? element and similarly attaching that to new shaft? Does the existing small shaft go straight through the large element? If so then you will need to define total length (inclusive of the big element). Or do you mean RE-machine the small shaft element on right hand side & the left shaft segment is just for info purposes? If so does the shaft have conical center drills cones in either end from original machining I'm no motor expert by any stretch but some smaller ones I've seen, the shaft is either integral or stuck on really well with interference fit & retaining compound, because all the power is transmitted through that surface & the motor must withstand heat. It would be more useful to others to specify the bearings being used because that will then define both the diameter and allowable tolerances. And be really certain about your fits because, if I understand correct, 13.60-13.50=0.1mm = 0.004" (sorry I have to think IMP) that is a healthy wide allowance for gear bore ID : shaft OD fit. [/QUOTE]
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Edmonton- Small lathe/milling work; Advice, insight, recommendation?
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