This Huco Huco-Lok bore reducer is for use with various Huco flexible couplings, such as the Huco-Flex B and Huco-Flex M model flexible couplings, and is made of aluminum for corrosion resistance and minimal additional weight to the coupling. It narrows the bore of the coupling to accommodate a narrower shaft and has a feathered head for preventing over-insertion into the bore. The couplings that this bore reducer fits are for use in various industrial power transmission applications such as high speed dynamometers, high-end servo drives, metering valves, positioning slides, pulse generators, scanners, unsupported drive shafts.

Flexible couplings are used to link two rotating shafts that are not aligned in order to transmit the rotational power, known as torque, from one shaft to the other. Most flexible couplings consist of two hubs and a middle assembly; each hub attaches to a shaft while the middle assembly flexes between the hubs to accommodate the misalignment of the two shafts. Shaft misalignments are generally either parallel or angular and cause complications to transmitting rotational power from one shaft to another in the form of stresses, loads, vibrations, and other forces, which vary from one type of misalignment to another. Flexible couplings are used in a broad range of applications, such as in motor vehicles, conveyors, escalators, agricultural, forestry and mining equipment, aeronautics, robotics and space exploration, among others.

Huco Dynatork manufactures couplings, piston air motors, brakes, clutches, gear boxes and other transmission products. The company, founded in 1965, meets the quality assurance standards of the British Standards Institution (BSI), the International Organization for Standardization (ISO) and the Deutsches Institut fr Normung (DIN), and is based in Hertfordshire, England.