XHL-20 Four Ball Friction Testing Machine
Product Description of XHL-20 Four Ball Friction Testing Machine
Computer control four ball friction testing machine, in the form of slide friction, is used for the loading capacity evaluation of lubricants in the high pressure point contact condition.
It can test the maximum non seizure load PB, sintered load PD and composite wear value ZMZ of lubricants, also do lubricants long time friction resistance test, can measure coefficient of friction, record friction force and temperature curve.
Test Standards of XHL-20 Four Ball Friction Testing Machine
ASTM D4172: Standard Test Method for Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method)
ASTM D2266: Standard Test Method for Wear Preventive Characteristics of Lubricating Grease (Four-Ball Method)
ASTM D2783: Measurement of Extreme-Pressure Properties of Lubricating Fluids (Four-Ball Method)
ASTM D2596: Standard Test Method for Measurement of Extreme-Pressure Properties of Lubricating Grease (Four-Ball Method)
ISO 20623-2017: Determination of the extreme-pressure and anti-wear properties of lubricants - Four-ball method (European conditions)
ASTM D5183: Standard Test Method for Determination of the Coefficient of Friction of Lubricants Using the Four-Ball Wear Test Machine
SH/T0189
SH/T0202
SH/T0204
NB-SH-T0845 （CEC-L-045-99）
Product Features of XHL-20 Four Ball Friction Testing Machine
1. Host
The host consists of a rack, spindle and its drive system, lever weight loading system, measurement control system, oil box, chuck friction pair test system, special tools for loading and unloading steel balls, and other components. The instrument operation control is controlled by PC.
Integrated computer and button control, easy to operate. After the experiment, observe using a CCD image abrasion measurement system to measure the wear spots on the surface of the steel ball.
2. Four ball machine wear spot measurement system
The four ball grinding spot measurement system is composed of a coaxial light microscope, a rack, a CCD digital camera, a stage, light source, specialized measurement software, and a standard calibration ruler.
This system maximizes the elimination of measurement errors, resulting in high measurement accuracy, good repeatability, and faster measurement
Technical Parameter of XHL-20 Four Ball Friction Testing Machine
Max testing force | 10KN |
Accuracy of testing force | ≤1% when more than 400N, ±5N when smaller than 400N |
Max friction force | 200N |
Error of relative friction force | ±3% |
Range of spindle speed | 20~2000r/min |
Accuracy of spindle speed | ≤±10r/min |
Temperature control range | Room temperature~250°C |
Accuracy of temperature control | ≤2°C |
Spindle Motor | ESTUN servo motor and driver， 1.5KW |
Diameter of steel ball for test | φ12.7mm |
One test oil used volume | 10ml |
Range of test time | 1s-9999min |
Control range of spindle rotation | 1-9999999 r |
Diameter of steel ball for test | φ12.7mm |
Dimension | 1185×505×1565mm |
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