1. Product Overview The Vermeer R23 replacement bearing is heavy-duty spherical outer ball bearing specially designed for Vermeer R23 / R23A hay rake rollabar assemblies. Built with reinforced multi-layer anti-dust sealing structure, it withstands continuous vibration, dry crop debris and harsh field operating conditions. Spherical outer surface offers self-aligning performance to compensate assembly deflection, perfect direct aftermarket replacement for original rake spare