Covers the Assessment of the wear aspects of the boundary lubrication properties of aviation turbine fuels on rubbing steel surfaces. The test ball is pressed with a force of 10 N against the test ring. The test ring is made to rotate at 240 RPM for a period of 30 minutes after which the test stops. The wear scar on the test ball is studied and the scar diameters of the wear scar (major and minor axis) are measured. Data Acquisition Test parameters such as speed, test duration, fuel temperature, air temperature and humidity are acquired, displayed and recorded. The acquired data can be viewed in graphs. The data acquisition system provides the users with the facility to super impose up to four test graphs for comparative viewing.
Technical Specifications
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Fluid Volume
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50 ± 1.0 mL
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Fluid Temperature
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25 ± 1 °C
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Fluid Ambient Temperature
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+ 5.0 to +35.0 °C
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Conditioned Air
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10 ± 0.2% relative humidity at 25±1 °C
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Flow rate through Fluid
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0.5 l/min
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Flow rate over the fluid
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3.3l/min
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Fluid Conditioning Time
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15 min
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Fluid Test Conditions
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3.8 L/min flowing over the fluid
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Applied Load
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1000 g (500g weight) (±1g)
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Cylinder Rotational Speed
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240 ± 0.5 rpm
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Test Duration
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30 ± 0.1 min
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Data Acquisition & Analyze
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Motor speed, Fuel temperature, air temperature , humidity & test duration
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Test Ring
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Dia 49.25 to 49.10, Thk 13.11 to 13 (SAE 8720 Steel, Hardness 58 to 62 Rc, surface finish Rq 0.51 to 0.71 micron)
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Test Ball
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12.7mm (0.5 inch) (AISI 52100 Steel, Hardness 64 to 66 Rc)
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