A hydrostatic step bearing has the following characteristics:
Shaft radius, R = 2.6 in
Radius of pocket, Ro = 1.1 in.
Shaft speed, N = 1800 rpm.
lnlet oil pressure, Po= 375 psi.
External pressure, P = 0
Expected mean film temp., tₒ = 120°F
Desirable oil-film thickness ho= 0.0035 in.
Lubricant = SAE 60
Determine (a) the load that the bearing can support, (b) the rate of oil flow, and (c)power loss due to viscous friction. (Ans. 3807.6 lb, 0.35 in³/sec, 3.00 hp)

A hydrostatic bearing has the following characteristics:
Po= 450 psi., η = 6.25 x 10⁻⁶ reyn .. ho= 0.002 in., W = 3750 lb., N= 900 rpm. For the pumping power to be minimum, determine (a) the diameter of the shaft, (b) the rate of oil flow, and (c) the power loss due to viscous friction. (Ans. 4.33 in, 0.48 in³/sec, 0.13 hp)

A hydrostatic bearing has the following characteristics:
Shaft radius, R = 3 in.
Pocket radius, Rₒ = 2 in.
Load, W = 10,000 lb
Shaft speed, N = 900 rpm
Viscosity, η = 3.50µreyn
Flow rate, Q = = 23.8 in³/sec
Specific gravity of oil = 0.85
Specific gravity of oil = 0.85
Determine (a) bearing stiffness, assuming that the flow rate is constant. What will be the film thickness if the load is doubled to 20,000 lb? (b) Assume that the pressure is
compensated by a capillary tube. For maximum stiffness of the bearing, determine the supply pressure, Ps and the length of the capillary for a tube radius of 0.1875 in. Check, if the flow through the tube is laminar. For laminar flow, Reynolds number (VD/v)
should be less than 2000. In this formula, D = tube diameter, V =fluid velocity, v = 11/p, and p = mass density of the fluid.

A hydrostatic step bearing has the following characteristics: Shaf...