- Capable to handle user defined L / D, r /c, bearing profile, surface roughness and sensor location
- Unique design to measure pure friction torque (minimizes the effect of cables and tubes used close to the bearing)
- Programmable radial load and journal speed. Load and speed control can have continuous, ramp or step function
- There are up to 32 channels available for data acquisition and recording
- Plot temperature and pressure in Cartesian or polar coordinates
- Pressure Sensing Module
- Temperature Sensing Module
- Bearing Radial Displacement Module (film thickness + elastic deformation of shaft and bearing)
- Frictional Torque Measurement Module
- Lubricant Heating Module
Parameter Specifications Radial Load 5 kN to 50 kN Speed 1 rpm to 2000 rpm Journal Size (dia X max. length) 100 mm X 100 mm Lube Oil Pressure 0 to 1000 kPa Pressure Sensors Range 0 to 10 mPa Temperature Sensors Range ambient to 200 Deg C Frictional Torque 0 Nm to 50 Nm
Rotor dynamics is of concern when the operating speeds and temperature rises. This situation calls for damping through oil pressure and temperature using journal bearings. Here, oil film pressure and temperature distribution depends upon several parameters like load, speed, clearance, viscosity, bearing profile and roughness. Ducom Journal Bearing Tester experimentally controls those parameters to investigate the applicability of variety of oils , bearing design and materials in heavy industries.
The basic test rig consists of a journal driven by a variable speed drive. Bearing under test is mounted on the journal has have 12 equispaced radial holes for the mounting of pressure and temperature sensors. Lubricant is pressure fed into the bearing with recirculating system. Radial test load is applied servo-pneumatically. Pressure and temperature of oil around the bearing are monitored through small radial holes. Frictional torque in the bearing can be measured with a reaction torque sensor.