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Air Bearing Apparatus

Air Bearing Apparatus .

Equilibrium Of A Beam

Description of Equilibrium Of A Beam

A self-contained product that shows how a self-acting gas lubricated journal bearing works. It also shows the onset of ‘whirl’.

The main part has a variable speed motor that turns a belt drive. The belt drive turns a precision bearing shaft. The shaft has a high-quality surface finish and spins inside a vertically loaded bush. A hand operated load control and load cell allow the user to apply and measure the load on the bearing bush. The bush has pressure tappings equally spaced around its circumference. The tappings connect to a multi channel digital pressure display unit.

Experiments of Equilibrium Of A Beam

Demonstrate how a vertical load affects the pressure distribution around an air-lubricated journal bearing.
Demonstrate how bearing speed and therefore compressibility number affects the pressure distribution in the bearing, and how this compares with theory.
Demonstrate the onset of ‘whirl’.

Operating Conditions

Operating environment: Laboratory
Storage temperature range: –25°C to +55°C (when packed for transport)
Operating temperature range: +5°C to +40°C
Operating relative humidity range: 80% at temperatures < 31°C decreasing linearly to 50% at 40°C

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