Hydrodynamic Bearing Apparatus

Product Description

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