Report No 2
5 Problem:
A 70mm diameter shaft subjected to a tangential load of 80 kN. With a SF of 5, design a suitable feather key for the shaft.
Given: F = 80 kN d = 70 mm SF = 5
Required: Design a feather key 

Solution: From Chart 12 (for the shaft diameter 70 mm): b x h = 20 x 12 Chose material EN8 From Chart9 _{} where l is the minimum length for the key.
Chosen key specification: * Material EN8, * b x h x l = (20 x 12 x 55) mm (Ans.) 
