Contact wheel source

[Ken H>]

Richard, your spindle is what spins with the contact wheel fastened solid to spindle axle with a setscrew or keyway?

 

[Richard338]

Richard, your spindle is what spins with the contact wheel fastened solid to spindle axle with a setscrew or keyway?

Yes, the wheel is a very snug fit and then held on by a washer and bolt.
I have used it on and off since around 2004 without any problems...