Page 87 - Fundamental of Engineering Design
P. 87
Direct Sheer Stress On A Key
Key is a one of the machine element which is used to connect the
transmission shaft to rotating machine element like pulley, gear,
sprocket or fly wheel.
Figure 3.1: Key and its element
Key joint are consisting of shaft, hub and key.
Function of Key are as follow:
◦ To transmit torque from the shaft on the hub of mating
element
◦ To prevent relative rotational motion between the shaft and
the joint machine element like gear or pulley. In most of the 87
cases, key also prevent axial motion between two element.
