What do the hubs look like? The shaft on the grinder is 5/8" on both sides and has a right/left thread depending on the side. I wasn't sure I could use a hub and didn't know there was any available.
Sorry I thought they all had a hub on the spindle to mount the wheel on. The hubs I’m talking of are for counter clock wise rotation. Hub collar/nut spins right hand thread. Sopko’s 3” per foot taper I believe. Arbor in pic is to show taper on hubs.