Bearing arbor shaft

Hello all,

I’m looking for a part of a self made lapidary machine. I brought it
long time ago and seems it’s hard to find another one in the market
today. Here is the picture of the part that I’m looking for:

Picture 1) The part itself
Picture 2) Mounted under table and linked with motor by a leather belt

If anyone knows where I can get one, I would be greatly appreciated!

Thanks in advance,