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Pressure Distribution In Journal Bearings

Pressure Distribution In Journal Bearings

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Product Description

Pressure Distribution In Journal Bearings

In Hydrodynamic Journal Bearings The Shaft And The Bearing Shell Are Separated From Each Other During Operation By A Lubricating Film. The Supporting Function Of The Lubricating Film In The Journal Bearing Can Be Described By The Pressure Distribution In The Bearing Gap.

The Unit Is Used To Visualise The Axial And Radial Pressure Profile In The Journal Bearing With Hydrodynamic Lubrication. To Do This, There Are 12 Measuring Points Around The Circumference Of The Bearing Shell And 4 Measuring Points In The Longitudinal Direction. The Respective Pressures Can Be Read Via 16 Tube Manometers With Reference To The Height Of The Liquid Column.

The Journal Bearing Consists Of An Electrically Driven Journal That Rotates In A Freely Movable Bearing Housing. Oil Is Used As The Lubricant. The Displacement Of The Shaft Journal Depending On The Speed And Direction Of Rotation As Well As The Characteristic Behaviour During Start-Up Can Be Observed Through The Transparent Bearing Housing.

Speed And Direction Can Be Adjusted. The Load Can Be Adjusted By Varying The Weights Supplied With The Unit. The Temperature In The Bearing Gap Is Measured In Order To Determine The Viscosity Of The Lubricant.

Learning Objectives / Experiments

  • Displacement Of The Shaft Journal As A Function Of The Speed
  • Pressure Distribution In The Bearing Under Constant  Load And Different Speeds
  • Critical Speed As A Function Of The Load
  • Critical Speed As A Function Of The Oil Temperature

Specification

  • Visualisation And Investigation Of Pressure Distribution In Journal Bearings
  • Bearing Housing Is Completely Transparent
  • Bearing Housing Moves Freely On The Rotating Journal
  • Infinitely Variable Speed, Electronically Regulated
  • Load On The Bearing Via Set Of Weights Included With The Unit
  • Temperature Measurement In The Bearing Housing
  • Radial And Axial Pressure Distribution Indicated With 16 Tube Manometers
  • Digital Indicator For Speed On The Control Unit

Technical Data

Bearing

  • Nominal Bearing Diameter: 51Mm
  • Bearing Gap: 4Mm
  • Bearing Width: 75Mm
  • Bearing Load: 6,7...16,7N

Motor

  • Power: 0,37Kw
  • Max. Speed: 3000Min-
  • Oil Iso Viscosity Grade: Vg 32
  • Tank For Oil: 2,5L

Set Of Weights

  • 1X 1N (Hanger)
  • 2X 2N
  • 1X 5N

Measuring Ranges

  • Pressure: 1770Mm Oil Column
  • Temperature: -10...50°C
  • Speed: 0...3000Min-1

Dimensions  : L X W X H: 1100X750X2650Mm


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