Need Advice, first time turning "U" Wheel from Delrin?

[disneytoy2]

Greetings!

First, I have zero lathe experience. I need to make these 3 "U" wheels out of delrin. The stock is 12" by 2.25" round stock.

Basically

1) 14mm bore
2) Need a pocket for a 6001zz bearing on both sides of the wheel. 6001zz (28mm x 8mm deep)
3) The wheel is 47mm wide
4) most important there is a 25mm concave radius.

These wheel are designed to ride up a 50mm round aluminum truss corner.

I'm in San Diego and asked a guy who does manual milling etc, and he declined making them saying :

"the problem would be they would need to be CNCd due to the counter bores on each end. once the radius is cut I won't have any way to grip the wheel in the chuck to counter bore the second side."

So now I'm on my own. I need to make 3-4 of these wheels to finish my project.

To those experienced people here could you tell me the steps you would do to turn these?

Much Appreciated

Max

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[Jim Dawson]

Face
Drill & bore
Counterbore one side
Flip the part around
Face
Counterbore the other side
Put on a stub arbor
Machine the ''U''

EDIT: Do you have a radius tool to cut the 25mm radius?.

[disneytoy2]

Wouldn't I know it is you Jim:-) Happy New Year. Coming to my rescue again!

I'm watching a youtube right now on stub arbors.

Trying to finish the Large 3D printer you were advising me on from last year.

The Truck wheel hub worked out amazing, and only cost $30!

Thanks again!

Max

Thanks

[Jim Dawson]

And happy New Year to you also.

I just make stub arbors as needed, really simple things. Just stick a piece of stock in the lathe and make the nose of the arbor to fit the part. Secure the part with a bolt that fits the hole that you tapped in the end of the arbor. The arbor needs to be just a bit shorter than the part so the bolt will tighten it onto the arbor.

Happy to hear that the hub worked out.

Looking forward to some picture of your machine.