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Higher Study | Design of Machine Elements | Sliding Contact Bearing

Tapered roller bearings can take
The important factor to be considered while selecting a bearing is
Ball bearing races are
In flat collar bearing, why is the number of collars provided to carry a fixed axial load?
Which of the following are the functions of lubrication in a bearing unit ? 1. To protect the bearing components from corrosion. 2. To absorb heat from the bearing unit. 3. To carry heat away from the bearing unit. Select the correct answer using the code given below
Statement (I): The journal while rotating inside a bearing automatically shifts its centre to one side and thus the journal is eccentric inside the bearing. Statement (II): The wedge shape of oil film gives rise to thin-film lubrication, which is considered as stable lubrication.
The property of a bearing material which has the ability to accommodate small particles of dust, grit, etc. without scoring the material of the journal is called
Consider that modern machines mostly use short bearings due the following reasons: 1) l/d of the most modern bearings is in the range of 1.4 to 2 2) No end leakage of oil from the bearing 3) Shaft deflection and misalignment do not affect the operation 4) Can be applied to both hydro-dynamic and hydrostatic cases Which of the above are correct?
Which of the following is self-aligning bearing?
Which of the following is antifriction bearing?
Journal bearing works satisfactorily with L/D ratio in the range of: [where, L = Length of bearing, D = Diameter of journal]
Which one of them is a correct combination? 1) Boundary Lubrication i) Dimensionless film thickness < 1 2) Hydrodynamic Lubrication ii) Dimensionless film thickness lies between 1 and 3 3) Mixed Lubrication iii) Dimensionless film thickness lies between 3 and 5 4) Elastohydrodynamic Lubrication iv) Dimensionless film thickness is greater than 5
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