Focused on improvements of contact points of balls and thread grooves, ball diameter and circulation system for new type, FSVH. The rated dynamic load has been increased to as two times as that of conventional type, FSVC.  
  Long Life
  Structure of the newly developed circulation system is designed to distribute the load uniformly to the load balls and it also increases the life of ballscrews.

On conventional circulation system, FSVC, the returning tube is inserted into the holes on ballnut perpendicularly which forms an advancing angle.

While ball moves into returning tube, it will hit tube end area and then move into returning tube. New circulation system, FSVH, ball will move into returning tube smoothly by tangent line as the same direction as lead angle. It can increase the life of circulation system structure.
  High DN Value  
  With the newly developed circulation system, ballscrews can meet the demands of high speed running with high DN value.  
  Low Noise  
  To use tangential circulation system structure, it can eliminate the noise while balls run into the returning tube.
  Various Specifi cations Combination    
  PMI can supply various ballscrews with diameter 50~100mm and lead 16mm to 25mm s
(Please contact PMI for your specifi c design requirement)
  Recommend mounting direction of heavy load ball screws  
  In order to support equal load distribution for shaft and nut, recommend mounting direction of ball screws allow fig.1 This mounting direction can avoided vibration as axial load uneven distribution for ball screws, therefore increase service life efficient.
  fig.1 Recommend mounting direction of heavy load ballscrew  
  Fig. 2 Load distribution  
  Accuracy Grade and Axial Play  
  If you have any question about accuracy grade and axial play(e.g. axial play <0), please contact our sales for your specific design requirement.  
  Plastic Injection Machines / Press and Forging Machines / Semi-conductor Equipments / General Machines  

Dimension (clickable)