Thread: Precision Ground 1/2" 7075 Rod Supplier
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Unread 15-01-2009, 01:20
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Re: Precision Ground 1/2" 7075 Rod Supplier
PG shaft isnt what you really want or need. It would be easier than sanding down a shaft with a tolerence of +-.003, but PG shaft with a tolerence of +0 -.0005 still has a good chance of not fitting, due to the simple fact that you can't put two things together with a near line-to-line tolerence. If the shaft is even close to .5000 (which .4995 is), it's likely not going to fit.

In the past we have purchased PG 1/2" shaft and stuck it on a drill with some sandpaper/emery cloth and sanded it down the thou or two required to make it slide in the bearings.

What you really need is undersized 1/2" shaft at .498 -.499 to get the nice slip fit I imagine you are looking for. If you can find it undersized, it doesn't even need to be PG. What we did in the past was excessive and wasteful. If you can do without it being PG, you'll save quite a bit of money.
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