Answer to Question #292563 in Mechanical Engineering for Niaz

Question

Determine h0 and e using the following given parameters: μ = 0.02756 Pa, N = 30 rev/s, W = 2210 N (bearing load), r = 19mm, c = 0.038 mm, and l = 38 mm. Also, determine the co-efficient of friction, the torque to overcome friction, power loss to friction, total volumetric flow rate Q, side flow rate Qs, maximum film pressure and the location of maximum and terminating pressures.

Answer 1

μ = 0.02756 Pa

N = 30 rev/s

W = 2210 N (bearing load)

r = 19mm

c = 0.038 mm

l = 38 mm

$\delta=\frac{\mu N}{P}(\frac{D}{C})^2$

$\delta=\frac{0.02756*30}{\frac{2210}{38*38*10^{-6}}}(\frac{38}{0.076})^2=0.135$

$\frac{L}{D}=\frac{38}{38}=1$

From tables $\frac{h_0}{C}=0.42$

$\implies h_0=0.42*0.038=0.01596mm$

Eccentricity ratio, $\epsilon =0.58$

$e=\epsilon C=0.58*0.038=0.02204mm$