For evaluation of the lubricity of diesel fuels using a high-frequency reciprocating rig (HFRR). A 2-mL test specimen of fuel is placed in the test reservoir and maintained at 25 or 60°C. When the temperature has stabilized, a vibrator arm holding a non-rotating steel ball and loaded with a 200-g mass is lowered until it contacts a test disk completely submerged in the fuel. The ball is caused to rub against the disk with a 1-mm stroke at a frequency of 50 Hz for 75 min. The ball is removed from the vibrator arm and cleaned. The dimensions of the major and minor axes of the wear scar are measured under magnification and recorded.
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"Conforms to ASTM D6079 and related specifications Variable Frequency from 10 Hz to 200 Hz via Software Wear scar measurement through digital microscope and software Real time data acquisition of frictional force, co-efficient of friction and temperature User friendly software for operating test rig with difference operating sequences Programmed test sequence for automated testing PC based digital and data acquisition Fully computer controlled test sequence Easy On-Site Calibration Proven repeatability and reproducibility Rigidly built dedicated table top rig"
Stroke: 20 microns to 2 mm Frequency: 10 Hz to 200 Hz Test Load: 1 N to 10 N through dead weights Frictional Force: 0 to 10 N Temperature Range: Ambient to 150 °C Test Disc Size: 10 mm dia. x 3 mm thick Test Ball Size: 6 mm diameter Power supply: 230V 50Hz 30A
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