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K93100
Four Ball Tester
The Four Ball
Tester is used to test the Wear Preventive (WP) and Extreme Pressure (EP)
characteristics of greases and lubricating oils in sliding steel-on-steel
applications. The point contact interface is obtained by rotating a 12.7mm
diameter steel ball under load against three stationary steel balls immersed
in the lubricant. The normal load, frictional force, and temperature can be
monitored using WinLube, the supplied Windows-based Data Acquisition
Software. The rotating speed, normal load, and temperature can be adjusted in
accordance with published ASTM and IP test standards. For evaluating the Wear
Preventive characteristics of lubricants, the subsequent wear scar diameters
on the balls can be measured using a graduated-scale microscope. The wear
scar can also be captured using an optional Closed Circuit Digital (CCD)
camera and measured using our Wear Scar Analysis Software. For evaluating the
Extreme-Pressure (load-carrying) capacity of lubricants, the normal load at
which welding occurs at the contact interface can be recorded.
Specifications
Conforms to: ASTM D2266, D2596, D2783, D4172, D5183; IP 239, IP 300
Electrical Requirements:
220V, 60Hz*
440V, 50Hz*
*Other electrical specifications are available. Please contact Koehler
Customer Service.
Drive Motor Power: 1.5 kW
Test Speeds: 1200, 1440, 1760 rpm (adjustable)
Optional Test Speeds: 300/3000,1000/3000 and 2000/10000 rpm
Maximum Axial Load: 10000 N at 3000 rpm or 12000 N at 1800 rpm
Test Duration : 1 to 9999 min
Test Ball diameter: 12.7mm
Included Accessories
Set of Weights
12.7mm Ball Chucks (2)
Ball Pot (2)
Ball Pot Heater
Ball Chuck Remover
Ball Inserter/Extractor Tool
Set of Hand Tools
Torque Wrench
Illuminated, Graduated-scale Microscope (x30 mag)
Temperature Sensor, spare
Heater Cartridges (2), spare
Fuses (2), spare
Electronic Controller
Connecting Cables
Data Acquisition Card
Data Acquisition Software
Operating and Maintenance Manuals
Calibration and Test Reports
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