Hy guys, just found this after being away for a couple of weeks. The original NDH Barrel bearings have not been available for decades, unless you find someone with N.O.S. stock. There were standard tapered roller bearing replacements available to replace the barrel rollers. Bower tapered bearing numbers are KA-11035-Z, the components of which are 15579A and 15522A, the other bearing is KA-11424-Z, the components of which are 17888 and 17830, any good bearing supplier should be able to tell you if the components are available. Do not mix Barrel bearing with tapered bearings their adjustment methods are different, hope that helps.
