Hydrodynamic Bearing Apparatus

Hydrodynamic Bearing Apparatus
Hydrodynamic Bearing Apparatus
Technical Description of Hydrodynamic Bearing Apparatus
The behaviour of a classical journal bearing with hydrodynamic lubrication can be investigated with the apparatus .The experimental capability ranges from the measurement of friction torque under load, to determine the pressure distribution in a journal bearing, to plot a locus curve of a journal and to determine the bearing attitude for different conditions of load and speed. The radial load of max. 500N is adjusted manually with a hand wheel. The drive is an asynchronous motor with frequency converter. All variables (speed, load, friction torque, oil supply pressure, oil peak pressure, oil temperature, X-displacement, Y-displacement) are indicated on 4-digit displays. Five different journals are used to examine bearing clearance. X and Y positions are measured using inductive displacement sensors. The friction torque is measured by means of a lever arm equipped with an electronic force sensor.

Specification of Hydrodynamic Bearing Apparatus
    Mobile unit to investigate friction in a hydrodynamically lubricated journal bearing
    Journal of a shaft: nominal diameter 50mm, width of bearing shell: 20mm
    Max. radial bearing load: 500N
    Drive motor: 0.37kW, max. 1500rpm
    Determination of friction torque with strain gauge force sensor and lever arm
    Electronic sensors and digital displays for: speed, oil temperature, oil pressure (supply and peak), friction torque, displacement in X- and Y-direction
Technical Data of Hydrodynamic Bearing Apparatus

Journal of a shaft  
Nominal diameter d: 50mm  
Bearing clearance  
    0.035; 0.055; 0.075; 0.095; 0.2mm  
Drive
    3-phase asynchronous motor with frequency
Converter

    Power output: 0.37kW
    Speed: 0...1500rpm  
    Speed measurement: optical sensor
    Max. friction torque: 0...1Nm
    Max. radial load: 0...500N
    Oil pressure measurement range: 0...10bar
    Oil supply pressure: min. 3bar
    Oil temperature measurement with RTD (PT100)  
Dimensions and Weight of Hydrodynamic Bearing Apparatus  
    l x w x h : 1000 x 750 x 1580 mm
    Weight : approx. 200 kg