Question

A 30mm diameter plane bearing of length 20mm is to be made of a material with the P-v characteristics shown in Figure 11.11 (b). If the bearing load is 300N and the maximum rotation rate is 500 rpm, is it safe to run it dry? If not, is boundary lubrication sufficient? (Remember that the bearing pressure is the load divided by the projected area normal to the load.) 1300 100 Fall hydrodynamic HD 10 Dearing PPIMPN Wearing pressure PIMP Foundary Side by whiting 0101 atal DEL DI 100 DL1 D DO 11 300 Siding walority [le] Sliding velocity (m/w) (a) [b]

Answer 1

SOLUTION It is not Cafe it dry to HON beaning Sunface ES As the Sliding velocity at grotation speed, ie revisec, Circumference of the beaning, times the 0.78 m/s the beaning, attains -> The Road is 0.5MPa, meon beaning by the obtained as the Pressure is Kood divided Projected normal to Load A rea there, it is unsafe to so on blotting read it dry. And the boundary lubrication Protect et to Er Enough