Power transmitted (Watts) by spur gear may be given as [Ft = tangential component of force (N), Fr = radial component of force (N), n = rotational speed (rpm), and d = pitch diameter (m)]
1
\(\frac{{\pi dn{F_t}}}{{60}}\)
2
\(\frac{{\pi dn{F_r}}}{{60}}\)
3
\({\left( {\frac{{\pi dn}}{{60}}} \right)^2}{F_t}\)
4
\({\left( {\frac{{\pi dn}}{{60}}} \right)^2}{F_r}\)