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Lube Oils Testing Equipment - Automatic Four Ball Wear Tester

Automatic Four Ball Wear Tester

Automatic Four Ball Wear Tester TT-2783Z

Automatic Four Ball Wear Tester TT-2783Z is used to evaluate the Wear Preventive (WP) and Extreme Pressure (EP) characteristics of greases and lubricating oils in sliding steel-on-steel applications. 

It adheres to the ASTM D2783, ASTM D2266, and ASTM D4172 Standard Test Methods for Wear Preventive Characteristics of Lubricating Fluid (Four-Ball Method). This tester uses sliding friction under high point contact pressure to assess the carrying capacity of lubricants. It measures three key indices: maximum no-seizure load (PB), sintering load (PD), and composite wear value (ZMZ). Additionally, it is utilized for long-term abrasion resistance tests to measure the friction coefficient.

Working condition

a. Temperature range: 10-35℃

b. Relative humidity: ≤80%

c. Ensure no surrounding vibration, corrosive medium, or electromagnetic field interference.

d. Power supply requirements:
- Voltage fluctuation range: Should not exceed ±10% of the rated voltage.
- Frequency fluctuation range: Should not exceed 2% of the rated frequency.
- Three-phase voltage imbalance: Should not exceed 10V.

e. Install the tester on a stable base, ensuring the level does not exceed 0.2/1000.

Main parameters and index

1. Test force range (stepless adjustable): 10N~10kN

2. Test force display value relative error: ±1%

3. Test force long-term stability error: ±1% F.S.

4. Friction force measurement range: 0~300N

5. Friction force measurement error: ±2%

6. Main axis rotation speed range (stepless): 200~2000 r/min

7. Main axis rotation speed range error: ±10 r/min

8. Friction pair temperature control range: Ambient to 200°C

9. Friction pair temperature control error: ±2°C

10. Test time control range: 1s~99h

11. Main axis rotation speed control range: 1~9999999 r/min

12. Net dimensions: 980mm × 750mm × 1640mm

13. Computer displays recorded: friction-time, friction coefficient-time, test force-time curves

14. Net weight: Approximately 500kg

15. Test steel ball: φ 12.7mm

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