NTN-SNR LINEAR AXIS AXC Series Manual page 12

Screw drive
Linear Axis with screw drive can be equipped with ball screws (Figure 1.17) and with trapezoidal screws. Screw drives are especially
suitable for high requirements for positioning accuracy and repeatability in combination with high rigidity of the driving element.
The drive adaption can be done directly by coupling and coupling cone or with a deflection belt drive.
Figure 1.17 __ Linear Axis with screw drive
In order to achieve a high velocity even at longer lengths, it is possible to equip the Linear Axis of the AXC and AXDL series with one
or more sets of screw drive support units (Figure 1.18).
Figure 1.18 __ Support unit
Advantages of screw drive axis
•
Long strokes with high position accuracy
•
Long strokes with high velocity by the optional use of screw drive support units
•
A choice of various pitches
•
Self-locking when using trapezoidal screws
•
High feeding forces
•
High rigidity of the drive element
•
Usually no gearbox necessary
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