Joint Size & Shaft Selection
Guide to joint size & shaft selection
Given that the power & RPM that are imposed upon the shaft are known, then the torque transmitted will be:
|T = HP×7119||or||KW×9542 Nm|
This torque has to be effected by consideration of joint bearing life required, operating angle & application conditions.
The graphs D, E & F for the 3 different joint designs are based on a B10 bearing life of 5,000 hours and joint angle of 3 degrees.
Graphs A & B give the appropriate factors for greater life and larger angle. A further factor should be included if there is direct connection of the shaft to prime movers as given in table C.
Effective Torque Te = T × K1 K2 × K3
|Electric Motor||(4cyl. and more)||1,00|
|Gasoline engine||(4cyl. and more)||1,25|
|Diesel engine||(4cyl. and more)||1,30|
Using Te & RPM as the co-ordinates on either of the following graphs D, E or F locate the application position in relation to the series lines. If this should be between two series lines, select the upper one.