Question

Calculate the required pV factor for a boundary-lubricated carbon graphite bearing to carry a radial load of 2.50 kN from a shaft rotating at 1150 rpm. The nominal diameter of the journal is 75 mm. use an L/D ratio as recommended in Lecture 16. Pick the closest answer in MPa-m/s O2.116 O 0.427 O 1.338 O0.852

Answer 1

actual answer was not given in option but you can choose closet answer. Still you have any doubt ask me. I am there to help you..

Sol Given data, radial load, WR 2.5KN N = 1150 rpm d=75m b = 16 PV = wol yw hory 1000 PV facto = 2 r = war = 2.50103 P= - -=0.02777 lxd - 16dxd 16xze2 mpa TON - RX75X 1150 = 4.516 m/s 6OX1000 60x1000 V= PV = ( W TON) = 0.02777x4.516 PV = 0.1254 mpa-mls Actual answer was not there in option. You Can Pick closet answer as 0.427