Renold Ajax offers a dry metallic coupling that uses disc shaped flexible elements to accommodate misalignment. As such, there are no moving parts and no lubrication is required. This allows for many years of service with no routine maintenance required.
There are other notable virtues of the flexible disc coupling. It has high torsional stiffness, no backlash and low bending stiffness. Precise connections are provided with low shaft loads on the connected equipment. The flexible disc coupling also has excellent high-speed capability.