Koehler – Tribology – Four Ball Tester
Koehler’s Four Ball Tester determines the Wear Preventative (WP) and Extreme Pressure (EP) characteristics of lubricating oils and greases in sliding steel-on-steel applications. The test consists of rotating a steel ball under load against three stationary steel balls coated with lubricant.
Measurements are taken at the rotating speeds, temperatures, and duration as specified by published standards. The load-wear index can be calculated from the weld point in EP tests, and lubricant comparisons can be made based upon scar diameters incurred from wear tests.
Available Models
Technical Specifications
| Conformation of Specifications | ASTM D2266, D2596, D2783, D4172, D5183*, IP 239 |
|---|---|
| Drive Motor | 1.5 kW |
| Test Speeds | 1200, 1440, 1760 rpm |
| Optional Test Speeds (min/max) | 1000/3000, 300/3000 rpm |
| Maximum Axial Load | 10000 N at 3000 rpm or 12000 N at 1800 rpm |
| Test Duration (min/max) | 1/9999 min |
| Test Ball diameter | 12.7 mm |
- Model No: K93100
- 220V,60 Hz
Technical Specifications
| Conformation of Specifications | ASTM D2266, D2596, D2783, D4172, D5183*, IP 239 |
|---|---|
| Drive Motor | 1.5 kW |
| Test Speeds | 1200, 1440, 1760 rpm |
| Optional Test Speeds (min/max) | 1000/3000, 300/3000 rpm |
| Maximum Axial Load | 10000 N at 3000 rpm or 12000 N at 1800 rpm |
| Test Duration (min/max) | 1/9999 min |
| Test Ball Diameter | 12.7 mm |
- Model No: K93100-PN
- 220V,60 Hz
Technical Specifications
| Conformation of Specifications | ASTM D2266, D2596, D2783, D4172, D5183*, IP 239 |
|---|---|
| Drive Motor | 1.5 kW |
| Test Speeds | 1200, 1440, 1760 rpm |
| Optional Test Speeds (min/max) | 1000/3000, 300/3000 rpm |
| Maximum Axial Load | 10000 N at 3000 rpm or 12000 N at 1800 rpm |
| Test Duration (min/max) | 1/9999 min |
| Test Ball Diameter | 12.7 mm |
- Model No: K93190
- 380V,50 Hz
Technical Specifications
| Conformation of Specifications | ASTM D2266, D2596, D2783, D4172, D5183*, IP 239 |
|---|---|
| Test Speeds | 1200, 1440, 1760 rpm |
| Optional Test Speeds (min/max) | 1000/3000, 300/3000 rpm |
| Maximum Axial Load | 10000 N at 3000 rpm or 12000 N at 1800 rpm |
| Test Duration (min/max) | 1/9999 min |
| Test Ball Diameter | 12.7 mm |
- Model No: K93190-PN
- 380V,50 Hz
Key Features
Four Ball Tester
- Conforms to ASTM D2266, D2596, IP 239, and related specifications
- Performs Wear Preventative (WP) and Extreme Pressure (EP) tests
- Displays and records normal load, frictional torque, time, and temperature
- Test speeds and temperatures are electronically controlled
- Data Acquisition Software and Card are included
- Custom configurations are available
- Precise variable loading capability
Key Industries
- Automotive
- Chemical
- Machinery & Manufacturing
- Mining & Minerals
- Oil & Gas
- Railway
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