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Locking Assemblies are used to sercurely attach mechanical components to rotating shafts. Unlike keyways, keyless locking assemblies, or friction type locking assemblies, compress and expand radially to create a 360-degree clamping force on the shaft. Typical applications of keyless locking assemblies include timing, drum and conveyor pulleys, sprockets, sheaves, gears, agitator shafts and hydraulic clutches and brakes.