Thanks Bonnar Bloke
I contacted Anthony Innovations (Anthony Bearings) a few years ago regarding the rear roller bearings and the clutch thrust bearing. Both bearings were listed on their website (clutch bearing is a "castor/trolley wheel bearing" !), neither are stock items and I was told they were made to order with a minimum run of 500. I would imagine they may do smaller runs for regular clients.
I considered having some sleeves cnc machined and offering my modified bearing as a alternative but I don't believe it would be viable, I don't think the demand is that high !
