SEED Guides ShaftHub Connections Common Connections <
3.8 Keys
Often employed with large gears. Stress concentration effects range from kf 1.38 - 4. It is usual to use a key whose breadth is 0.25 times the diameter of the shaft and calculate the length to enable it to transmit the torque. Fretting, corrosion and cracking can occur in the shaft keyway and poor fits cause backlash, particularly during rapid stops. There are many types of key and it is beyond the scope of this Guide to explain them. The more common types including rectangular cross sections, tapered gib-head and Woodruff keys are shown here?????? missing p5 para1