... outer ring, by which the roller can be rolled directly at the rollwayand withstand the large load. The supporting rollers made by our ... ,RN222RS, NATR NARTPP, NATV NATVPP,NUTR NAST. Supporting Roller. The curve roller is composed of a bolt, thrust collar, outer ring ... wall outer ring with camber outside face, withstanding the high radial force.The curve rollers made by our company include KR, KRE, ...