Hydrostatic journal bearing calculator

Hydrostatic journal bearing

Bearing configuration

Type of flow restrictor

Shaft diameter D

10^-3 m

Bearing length L/D

Axial ridge length La/L

Tangential ridge length Lt/L

Radial clearance dR/R

Supply pressure ps-pa

10⁵Pa

Pressure factor ß₀=(pr-pa)/(ps-pa)

Lubricant viscosity η

Pa·s

Effective bearing area A_E/A

Dimensionless load capacity F'

Dimensionless stiffness S'

Dimensionless flow Q'

Ratio of axial and tangential flow q'

Load capacity F(ε=0.5)

10³ N

Radial bearing stiffness S

10⁶ N/m

Flow rate Q

liter/hr

Pump power N

Pressure distribution bearing configuration I) and II) respectively, but with 5 pockets. In configuration II a circumferential flow takes place, with lubricant flowing from the pocket with higher pressure to the one with lower pressure. The stiffness of this bearing is somewhat negatively affected but the flow rate through this bearing is significantly smaller.

For finite element analysis of hydrostatic bearings to be designed to your specification, please email info@tribology-abc.com