Page 93 - Fundamental of Engineering Design
P. 93
Selection and installation of key and
key-seat
◦ The key application usually designed after the shaft diameter is specified.
Shaft diameter as a guide the size of the key which selected using a table
ANSI Standard B17.1-1967(R98).
◦ Key are most often made from low-carbon, cold drawn steel as table AISI
1020 CD which contain information about material condition, max tensile
strength, yield strength, ductility and hardness.
Key classification:
1. saddle key and sunk key
2. square key and flat key
3. Taper key and parallel key
4. Key with and without Gib-head
Selection of key
1. Power to be transmitted
2. Tightness of fit
3. Stability of connection 93
4. cost
