VFBT-4000 High Vacuum Four-ball Friction Wear Tester is mainly used to simulate the friction and wear of oil lubrication in aerospace, aviation and other special environments. It is used to evaluate the tribological properties of oil and grease in vacuum environment.  

This tester first vacuumizes the vacuum environment laboratory with a vacuum pump to remove unnecessary gases and moisture. Under vacuum, the four ball friction experiment is realized by magnetic transmission technology. The relationship between vacuum degree and friction coefficient is obtained through the sensor and computer data processing system.

                （Analysis chart）         （Experimental principle）      （Contact form）

Key technical parameters

1. Instrument weight：300kg

2. Appearance size:700×700×2000(mm×mm×mm)

3. Chamber size: Φ400mm × 400mm

4. Extreme vacuum degree: 5.0×10^-4 Pa

5. Load: 10～1000 N 

6. Shaft rotation speed: 10～2000 r/min

7. Friction coefficient accuracy:1%F.S 

8. Friction balls size: 12.7 mm

9. Stage size: 70 mm

10. Rotation radius: 3～20 mm

11. Stage height variation range: 0～25 mm

12. Power：4kw

13. Operating Voltage：220V

14. Data processing: the Access, Excel database file, Word experiment report and Jpeg picture can be generated