Journal Bearing: Types of lubrication, viscosity, hydrodynamic theory, design factors, temperature and viscosity considerations, Reynold’s equation, stable and unstable operation, heat dissipation and thermal equilibrium, boundary lubrication, dimensionless numbers, Design of journal bearings, Rolling-element Bearings: Types of rolling contact bearing, bearing friction and power loss, bearing life; Radial, thrust & axial loads; Static & dynamic load capacities; Selection of ball and roller bearings; lubrication and sealing.
IMP Questions of Bearing:
Q.1: Explain Basic modes of lubrication in bearing system.
Q.2: What is hydro-static and hydro-dynamic lubrication write advantage, limitations and applications.
Q.3: Effect of temperature on Viscosity.
Q.4: Define Sommerfeld number write Raynolds equation..
Q.5: Discuss design procedure of a journal bearing.
Q.6: Explain the term bearing modulus and its effect on performance of bearing.
Q.7: Define bearing and its types in details with suitable drawing.
Q.8: What are the applications of rolling and sliding contact bearings.
Q.9: Discuss different types of thrust bearing and its applications.
Q.10: What is L10 and L50 Life?
Q.11: Discuss LOAD LIFE relationship of rolling contact bearing.
Q.12: State brief about factors affecting bearing life.
Q.13: Define: (a) Rating Life (b) Dynamic Life (c) Reliability of roller bearings
Sunil Pipleya 