Static adjustable pulleys "PR DV" and "PBR DV" are designed to allow adjustment of pitch diameters. One flange is screwed on the threaded hub. The movable flange is provided with set screws for fixing into the required position. It is recomended to periodically grease the hub threads.
HRC couplings offer a range of hub and element selection to meet the demand for a low cost, general purpose spacer type flexible coupling. They allow for incidental misalignment, absorb shock loads and dampen out small amplitude vibrations. They are offered in both pilot bore, finished bore, Finished bore, and Taper bushed with both face and hub mount.