A tapered key connects and prevents relative motion between the shaft and the rotating machine element. It also allows the transmission of a moment of force. The tapered key fits into the joint between the keyway of a shaft and the keyseat of a rotating element. A tapered key is only tapered on the hub engagement side. The hub’s keyway is tapered to match the tapered key. Tapered keys can have either a gib or a tab design which makes it easy for disassembling. A gib key’s cut has one end that resembles a gib while the tab key has a square head design. Both designs of tapered keys secure the key and engage the shaft firmly to the hub.
A tapered key is mostly used in machines with rotating shafts
such as gears
, pulleys and washers. Tapered keys have a tendency to slightly offset the centre of the rotating shaft from the mating counterpart.
Shop for the perfect tapered key for your specific application at MRO Supply. We have a wide assortment of tapered keys and keyways in different dimensions and for various diameters for the hub and shaft.