Effect of the axial movement of misaligned journal on the performance of hydrodynamic lubrication journal bearing with rough surface

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Table 2

Main parameters of journal bearing.

Parameters	Symbol	Numerical value
Rotation speed of bearing (rpm)	n	1500∼4000
Bearing radius (mm)	R	30
Bearing width (mm)	L	66
Radius clearance (mm)	c	0.03
Viscosity of lubricant (Pa · s)	η	0.009
Journal misalignment angle (°)	γ	0.004∼0.007
Axial velocity (m/s)	V	0∼1
Surface roughness of journal (µm)		0.2, 0.4
Surface roughness of bearing (µm)		0.4, 0.8
Surface direction parameter	γ₀	1/9∼9

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