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