Page 94 - Fundamental Of Design In Mechanical Engineering
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Taper Key and Gib-Head Key
Taper keys are designed to be inserted from the end of the shaft after the
hub is in position rather than installing the key first and then sliding the hub
over the key as with parallel keys.
The gib head key has a tapered geometry inside the hub that is the same as
that of the plain taper key. But the extended head provides the means of
extracting the key from same end at which it was installed. This is very
desirable if the opposite end is not accessible to drive the key out.
(a) Tapered key (b) Gib Head key
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Figure 3.4 : Taper and gib head key design
