Ruland Manufacturing shaft collars are used for guiding, spacing, stopping, mounting & component alignment. These RoHS 3 & REACH compliant units have a clamp style design that does not mar the shaft, in addition to allowing easy removal & indefinite adjustments. They have a precisely controlled face to bore perpendicularity, with tight tolerances on bearing locknuts to offer positive alignment when a shaft collar is used as a load-bearing face, mechanical stop, or for mounting components. These units are stamped with bore sizes for easy identification. Selected units have double-tapped threads to ensure burr-free finish.