Optional for parallel shaft helical, helical-bevel and helical-worm gear units. The TorqLOC^® hollow shaft mounting system is used for achieving a keyless connection between the customer’s shaft and the hollow shaft in the gear unit. As a result, the TorqLOC^® hollow shaft mounting system is an alternative to the existing hollow shafts with either shrink disk, key, or splines. The TorqLOC^® hollow shaft mounting system saves costs, as well as provides the advantages of easy installation and removal..