A5 Feedroll Bearing Upgrades TOLL FREE: NORTH AMERICA PARTS 1-888-656-3131 You can now quickly convert your early Nicholson A5 Debarker feedroll shaft bearing assemblies to the new direct lubrication insert style. Kits to modify both the feedroll and gear ends of the feedroll support arms are available. 17, 22, 27 and 35 inch A5 Debarkers can be retrofitted with these upgrades. The modification features quick-change bearing housings that bolt into the support arms and let you change bearings quickly and easily. The kits include special hub cartridges, new housing retainers, bearings, seals and fasteners. The old bearing housing is simply cut off and the new hub cartridge is welded on in its place using jigs available from the factory. We can also supply you with a factory trained technician to guide you quickly through the upgrade process in the most efficient manner.