Locking Devices Keyless shaft-hub locking devices have been the cornerstone of the RINGFEDER POWER TRANSMISSION group. For over 90 years, our product offering of internal clamping and external clamping locking devices and global support has been unparalleled in the industry. • Direct selection for Locking Assemblies • Direct selection for Locking Assemblies – stainless steel • Direct selection for Locking Assemblies under...