Sprockets CNC Hub Adapter Between Sizes

Sitherus

Active Member
Joined
Apr 4, 2016
Messages
252
I used my calipers to measure my hub/axle the part between the spokes where the CNC adapter fits. It measured 1.273 inches or 32.35mm I cant find any hub adapters that fit. What size would be right for me? I need to use to 3 point adapter like this one.
 


Timbone

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Joined
Apr 20, 2014
Messages
1,104
Without looking, I’m pretty sure the OCC sized adapter is sized 1.25”. It’s fine to carefully grind off the material to make it fit. In fact, leave the finished surface a little rough and it will grip the hub better.
 

Sitherus

Active Member
Joined
Apr 4, 2016
Messages
252
Without looking, I’m pretty sure the OCC sized adapter is sized 1.25”. It’s fine to carefully grind off the material to make it fit. In fact, leave the finished surface a little rough and it will grip the hub better.
What tool do you recommend I use to grind it down.
 

Timbone

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Joined
Apr 20, 2014
Messages
1,104
You could use a round file or a dremel tool. Maybe a small stone made for a drill motor. Whatever method you choose, be patient and keep it round. You got this!
 

Tom from Rubicon

Active Member
Joined
Feb 9, 2016
Messages
319
What tool do you recommend I use to grind it down.
The best possible way to enlarge a sprocket adapter is mount it on a faceplate and bore it. In either a milling machine or lathe. Timbone's methods will not suffice. At the least concentricity will be lost.
 
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