Features:
1.Each main spindle and each swing frame are driven independently and are infinitely variable,speeds show on digital display.
2.Size and position of the eccenter stroke are easy to adjust.  
3.Each working pressure is produced by adjustable pneumatic,pressure shows on pressure gauge.
 Handle valve is easy to load or unload pressure on the lens fixture.
4.Each timer controls the working time.It realizes automatic production.
5.Coolant or polishing slurry circulates to feed in one tank.