Screw drive features
Screw drive features
Ball screw threads or trapezoidal threads can be used depending on the application.
|
ball screw |
trapezoid thread |
|
| Duty cycle > 50% |
suitable |
unsuitable |
| Adjustment velocity > 50 mm/s |
suitable |
partially suitable |
| hard impacts |
unsuitable |
partially suitable |
| Efficiency |
> 85 % |
< 40 % |
| Positioning accuracy |
± 0,05 mm |
± 0,3 mm |
| Operating temperature |
-20 up to +70 °C |
-20 up to +70 °C |
When should ball screw threads be used:
- high adjustment velocity
- high required repetition accuracy
- high dynamic application
- high required affectivity
When should trapezoidal screw threads be used:
- low adjustment velocities
- low duty cycles
- applications with impacts
- cost-effective applications