Types of screws
The following screws are used at ADE, depending on the request:
trapezoidal screw
Recirculating ball screw
Planetary roller screw
Comparison of the advantages and disadvantages as well as the constructive features of the different screw drives
| Linear actuator with trapezoidal screw |
Linear actuator with recirculating ball screw |
Linear actuator with planetary roller screw |
|
|---|---|---|---|
| Screw | Rolled precision trapezoidal screw | Rolled / smoothed threaded screw |
Smoothed threaded screw |
| Screw nut | Bronce screw nut | Smoothed ball screw-nut | Planetary roller screw-nut |
| Self-locking effect | yes | no | no |
| Robustness | very high | high | very high |
| Shock sensitivity | very low | medium | very low |
| Speed range | medium | high | very high |
| Stick-Slip effect | present | not present | not present |
| Carrying capacity | high | medium | very high |
| Sensitifity to icing | yes | no | no |
| Wear | yes | no | no |
| Positioning precision |
dependent on duration of operation |
nearly consistent | nearly consistent |
| Degree of efficiency | low | very high | high |
| Lifespan | medium | high | very high |
| Reliability | medium | high | very high |