• Rondo round-thread leadscrews

    The cost-effective alternative to trapezoidal screws - with convincing efficiency
  • Tailor-made leadscrews

    Your revolutionary idea - our tailor-made solution: any nut shapes and end processing
  • Rondo round-thread leadscrews

    Application example: pressing freshly ground coffee in a modern gastro coffee maker

Nut type (shape)

  • Bild

    Rondo standard flange nut
    Type RFM

    • flange nut type A following DIN 69051
    • not preloaded
    • wear-resistant technopolymer EX100 White


Design features

Eichenberger Rondo round-thread leadscrews are a true alternative to conventional trapezoidal screws. They deliver outstanding efficiency and quiet running due to their round-thread profile.
Made of corrosion-protected steel or alternatively aluminium, the screws are combined with high-performance technopolymer flange nuts (outer dimensions equal those of Speedy standard flange nuts)



  • standard: corrosion-protected steel
    1.4021 (X20Cr13)
  • on request:
    steel 1.0401 (C 15)
  • on request:
    coating to reduce sliding friction


  • standard:
    EX100 white
  • on request:
    iglidur® J *
    other materials

* iglidur® is a registered trademark of igus® GmbH

Operational temperatures

  • EX100 –40 to +60 °C
  • iglidur® J * –50 to +90 °C

Lead accuracy

  • standard:
    G9 ≤ 0.1 mm/300 mm (in accordance with DIN 69051)
    on request:
    other lead accuracies

The efficiency η depends on the helix angle and reaches values from ~0.3 up to 0.5

Application examples for Rondo round-thread leadscrews

Eichenberger Speedy, Easy and Rondo leadscrews are suitable for numerous applications: On the one hand, for shorter lifts, they are a great substitute for belt drive systems because of their lower engineering effort. On the other hand, they are also an excellent substitute for hydraulic and pneumatic lift cylinders because they can be freely accelerated and positioned, and work independently of secondary energy sources. Thanks to high Efficiency and excellent value for money, they are an ideal alternative to trapezoidal screws or ballscrews in particular areas of use.

More application examples

Design fundamentals

The following are the relevant calculations which underlie screw
design and safe operation of a Speedy, Easy or Rondo leadscrew.




ø 4–40 mm
p 1–40 mm


Light leadscrews
ø 20 mm
p 80 mm


High-helix leadscrews
ø 4 … 36 mm
p 4 … 200 mm

Individual thread drives

Find the right standard thread drive

Carry Ballscrews
Speedy High-helix leadscrews
Easy Light leadscrews
Rondo Round-thread leadscrews
Cylindrical nut
Type ZY...
Nut with mounting thread
Type FG...
Flange nut
according to drawing

Individual tailor-made thread drives

  • application-specific nut shapes, including integrated additional features such as axles, mounting surfaces etc.
  • individual thread profiles and customised ball sizes, e.g. for increased load ratings
  • application-specific screw diameters and end machining
  • special materials and coatings

and much more

Further information

What we are doing

We develop, produce and market innovative linear power transmission products – lead and ball screws with cold-rolled threads – designed specifically to address the needs of potential OEM applications.
read more

Next trade fair date

MECSPE Power Drive, Milan, Italy
hall 5, stand F20
visit us!