3/8" Hubs

[Mark Sheridan]

1. Like others are suggesting: If you got a drill press and a decent arbor press you could buy the .25" drill it out to 3/8" and broach the key way.

2. If you got a mill or perhaps a drill press you could make a dutch key. A dutch key is made by drilling/milling parallel to the shaft forming a round key way. You could do this with the 3/8" hex hub, drill out a round key way and push in a pin to make a key. This is weaker the method 1

3. Alternatively order the 3/8" hex and shove a shim or shaved down key into shaft key way. Probably the weakest solution.


2 and 3 could get you going until you get the parts you need. 1 probably the best.

[gpetilli]

We have been adapting our own belt pulleys and find that a ream is far better than a drill for fitting the shaft. A 3/8 drill is not exactly 3/8 but a ream is.

[roystur44]

Set screws and lock tight will get you out of a bind.

[DBortnick]

Great suggestions.

We do not have an arbor press but we do have a decent drill press and a lathe. Getting the 1/4" hub and drilling it out to 3/8" might be our best bet at this rate.

Thanks for your help!