The original RINGFEDER® Locking Assemblies featuring double-tapered thrust rings with self-releasing tapers. They bridge relatively large fit clearances, are easy to install, adjust or remove, but are not self-centering. A pre-centering hub section is usually required. These units are most commonly used on applications in general engineering to transmit high torques and axial loads utilizing larger machining tolerances. Available sizes: metric series for shafts from 16 mm to 1000 mm dia.; Inch series for shafts from 3/4” to 7.875” diameter.