The frictional torque transmitted in a flat collar bearing assuming uniform wear is given by:
(where, μ = coefficient of friction, P = Total thrust on bearing, and r1 and r2 are the internal and external radii of the collar)
1
\(T=\frac{1}{2} μ P\left(r_1+r_2\right)\)
2
\(T=\frac{1}{2} μ P\left(r_1-r_2\right)\)
3
\(T=\frac{2}{3} \mu P\left(r_1+r_2\right)\)
4
\(T=\frac{2}{3} \mu P\left(r_1-r_2\right)\)