Grinding wheel arbor adapters???

[torker]

Hey guys!
I need to make a couple of grinding wheel arbor adapters. Should I make them out of 6061 alu or UHMW...or what?
Thanks!

Russ

[torker]

Geez...I thought you'd be all over this.
OK...if I put the grinding wheel on a conveyor belt...add some boobs....and get rosie the riviter to hold them...then could you tell me....what the heck to use here?
Thanks!

Russ

[WJHartson]

Russ, I'm not sure what you mean by and arbor adaptor. What kind of machine is it going on? Give me a little more info and I will tyr to help you.

Joe

[CCWKen]

I've made them out of aluminum. Works just fine. I used them to put 1 1/4" hubed wheels on a 3/4" shaft. Make them a tad short so your clamping washers don't bottom out on the bushing instead of the wheel.

[WJHartson]

I agree with CCWKen if that is what you are trying to do.

Joe

[torker]

Ken and Joe...That's what I'm doing. 1 1/4" hole to a 5/8" arbor. Ok...alu it is!
Was thinking that UHMW would soak up some more of the vibrations etc.
Just another case of reading more into something...thanks again!
Russ

[darryl]

Just a little wrench in the works here. I'd be inclined to make them out of a material with a little give to it to acommodate any play or any irregularity in the bore of the wheel. If I'm not mistaken, there's normally a plastic bushing supplied with wheels to make the fit to the arbor. A couple things here- you want the wheel to be as concentric with the shaft as possible, but you don't want the wheel to be forced to follow any and all vibration donated by the motor. The wheel has no give, and if your bushing was solid, there will likely be very high point forces acting on the bore of the wheel. It may never be a problem, but if you can reduce point forces there, then wouldn't the wheel be safer? That's my take on it, and I would recommend using a similar plastic material that the usual bushings are made of. Pvc is my material of choice, partly since I have some in blocks big enough to make these from, and partly because it's easily machinable to a size. Uhmw would be fine, except it doesn't lend itself well to turning to an exact size. I think many other plastics would be better to use than hmw pe or uhmw pe.

MHO

By the way, I get my pvc from discarded water and sewer pipe chunks. I just picked up a discarded chunk of 24 inch pressure sewer main (something like that). I previously found a section of 24 inch water main which is identical except that one is rated for potable water. ( I hope so, this is what carries my city's water supply) These pipe materials are a tad over an inch thick, and I normally cut it into manageable segments with my skilsaw, then heat it to formable temperature in the oven. When 'ripe', I flatten it between boards. It's pretty stable after that, and can be worked with woodworking and metalworking tools, though it's a bit hard on hss cutting edges. Read up on the hazards if you've never worked with it before.

[This message has been edited by darryl (edited 12-17-2005).]