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Re: 1.9" Omni Wheels
I've recently used mcmaster #2289T41 for a personal project. It's the 1/4" bore version, but the difference is a small plastic bushing that reduces the bore from 5/16" to 1/4". Here's a picture. There are three pieces: two wheel halves and a center hub piece. There's a significant amount of material on this hub. Definitely enough to open the bore to 3/8 and broach. I'll have to verify, but you should also have enough meat on the hub to broach to 1/2" hex. (edit: the OD of the hub is 0.7". definitely enough room to broach 1/2" hex)
The rollers themselves are made of a hard acetal, so don't expect any significant amount of grip from these wheels.
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Last edited by Jeremy Germita : 28-12-2016 at 19:11.
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