JBL MP418SP Powered Subwoofer Caster

This is a replacement for a destroyed caster wheel on my JBL Subwoofer. I took what remained of my destroyed one, mocked up 1/2 in sketchup and seated the rubber tire in between. The metal rod that the wheel sets on should snugly fit and there shouldn't be much play in the tire once its assembled. I didn't glue mine, just bolted it together and moved on with life.

Print upside down so the flat is down and the stem portion goes up, shouldn't need support,