jessegreen
Mechanical
I want to machine a Delrin bushing for a 0.44" diameter shaft. My current design has a hole of 0.45" diameter and a wall thickness of 1/8 inch. Can Delrin handle this machining? Thank you.
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Minimum wall thickness for machining a Delrin bushing? 1
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MikeHalloran
Mechanical
Yes. Use super sharp tools, and sharpen them or slow down if you smell vinegar.
Mike Halloran
Stratford, CT, USA
Mike Halloran
Stratford, CT, USA
Are you gripping the OD and boring the Ø.45 as a through hole?
If so, I'd expect the bushing bore will be 3 or 4 lobed when it is removed from he chuck.
A collet would be better.
I'd start with a longer piece of solid stock, bore the ID ( blind hole) and turn the OD, then "part" the finished bushing off the stock.
If so, I'd expect the bushing bore will be 3 or 4 lobed when it is removed from he chuck.
A collet would be better.
I'd start with a longer piece of solid stock, bore the ID ( blind hole) and turn the OD, then "part" the finished bushing off the stock.
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You need to determine the operating PV to see if Delrin (POM-H) can handle this application. Then you need to determine total running clearance. See link below for design guide. Since your bushing is small I’d step up to a better material like Techtron HPV. Won’t be much more $$ and will last much longer and easier to machine thin sections.
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Mitsubishi Chemical Advanced Materials
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Mitsubishi Chemical Advanced Materials
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