NDDan
Guest
I would be careful with the oring on the inside location. We had a couple R50s that had been assembled with oring bearings on the inside and they wobbled out the pulley to the point the header clutch armature broke out. Maybe won't happen with the big machines for the way the belts pull on pulley. Oring bearings on outside sure last alot longer than the inside one with solid outer race but it could be related to the location. Might want to check out before you rack up to many hours. Thanks for report and good luck.