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Fluid Film Solutions

Q: What is a hydrodynamic fluid film bearing?

A: In a fluid film bearing, the stationary and rotating surfaces are separated by a thin film of lubricant, such as oil, air, water or process fluid. In a hydrodynamic fluid film bearing, the film... Read More

Q: What are the primary functions of a hydrodynamic fluid film bearing?

A: The primary functions are to control the rotor position, balance forces on the system, and provide damping. Journal bearings support radial loads (perpendicular to the axis of rotation).... Read More

Q: How does a fluid film bearing differ from a rolling element bearing?

A: A bearing is a machine part that allows relative motion between two surfaces with minimal friction. In a rolling element bearing, the primary motion is a rolling motion using a ball or roller.... Read More

Q: What is an offset pivot?

A: The pivot offset refers to the location of the pivot as a percentage of the pad arc length on a thrust or journal tilt pad. The distance is measured from the leading edge of the pad. A center... Read More

Q: What is 'Directed Lubrication'?

A: 'Directed Lubrication' allows for increased load capacity and improved bearing performance by reducing power loss and bearing temperatures. It is available on tilt pad thrust and journal bearings. 'Directed... Read More

Q: How does oil flow affect power loss?

A: Power loss in a thrust bearing results from the combination of viscous shear in the oil film and (in flooded bearings) turbulence in the oil caused by the rotation of the shaft in an oil filled... Read More

Q: What is a squeeze film damper?

A: Rotating equipment requires damping to control vibrations and prevent them from damaging the rotor, bearings and other components. A squeeze film damper is a layer of film between the bearing... Read More