Trapezoidal Screws (RATS, RPTS)

NEFF´s rolled trapezoidal threads are available from stock in over 70 different sizes. We manufacture our spindles in various materials, also in stainless steel. Continuous process control guarantees consistently high quality. Please contact us for individual spindle specifications.

 

 

Our standard product range includes rolled ball screws. On top of that, we deliver ground or whirled ball screws.

During the rolling process, the thread grooves are rolled in with a cold working method. This leads to high material strength an surface quality. The gothic pointed profile with a contact angle of 45° and an optimised osculation guarantees for ideal operating characteristics and high load capacities. This also allows for high efficiency. From raw material tailored to our specifications, to thread rolling and inductive hardening, to the final finishing, NEFF´s manufacturing process ensures a consistent high quality of our ball screws.

The ball screws in stock range from Ø12 to Ø80 with pitches up to 60mm. Thread profiles with up to six threads guarantee high load ratings. The standard pitch variation corresponds to tolerance grade T 7 (52µ/ 300mm). Thanks to the seamless process chain in the spindle production, we are able to deliver spindles with an accuracy of tolerance grade T 3 (12µ/ 300mm).

Technical Data

Diameter standard: 10 – 120 mm
Pitch: standard: 2 – 24 mm
Number of threads: 1-6
Thread direction: right- or left-hand thread
   
Length: standard: 3000 mm<br Ø20/>Ø20: 6000 mm, , excess length over 11 000 mm on enquiry
Material: 1.0401 (C 15)

Accessories

  • End machining:   standard end machining suitable for NEFF- fixed bearing units and
                              movablebearing units or specific according to drawings.
  • Ready-to-install bronze nut EFM
  • Long red brass nut, cylindrical (LRM)
  • Short steel nut blank, cylindrical (KSM)
  • Hexagonal steel nut (SKM)
  • Safety trap nut (SFM)
  • Long plastic nut blank, cylindrical
     

Click here for end machining

 

CAD-Data

For implementing NEFF components in your construction, please use our 3D-configurator.
Download of 2D- or 3D-Models is possible in different formats.