bearings and epoxy

[powerbuoy]

I was thinking about building a magnet plate, basically a typical disk (6" ID) 1/4" thick. In the center of the plate I would like to place a ball bearing. Since I do not have any mounting provision for the bearing ...how about placing it nicely in the center, make sure it's tight, tape around the plate and fill everything up with epoxy. Once hardened, it should be nice and almost resemble a stator endbell ...

Epoxy as bearing holder ... what's your opinion?

Powerbuoy

[Devo]

I think you will run into trouble with the bearing spinning in the epoxy causeing wear under long term use. Usually a few thou interference fit is good to ensure a bearing doesn't slip but hey who knows maybe it would do for what you want?

Devin

[WXYZCIENCE]

Powerbouy, I have used this method and have had good results. I used a two part, hard neoprene rubber for the center 1/2" bearing holder. Then epoxy to the outside edge. I also have some neoprene wheels done this way, rated at 200lbs. Finding dead center is going to be your challenge. If you could rotate the plate on it's own bearing and true up the outer edge would make it a lot easier


Joseph.

[powerbuoy]

Thanks a lot for the comments!!!

Powerbuoy

[hvirtane]

You are making axial flux generator magnet disks?

I think that disks itself have no need to be

made circular. They can be made with 8 corners for

example. No need for a lathe...

Only the magnets need to be on a circular band.

Your idea about the bearing fixing system sounds nice.

- Hannu