With more than 50,000 Rexnord Addax Composite Couplings installed around the world, Rexnord has more experience than any other composite cooling tower coupling manufacturer. These couplings are made with lightweight, advanced composite material to increase critical speed, reduce vibration and extend bearing life. As a result, they can reduce overhung bearing loads up to 80% compared to alternative metal couplings. Rexnord Addax Composite Couplings are designed to your specifications and made to order.