enust
Motion Elements
  • Screw Drives Group
  • Ball Screw Drives (KGT)
    Trapezoidal Screw Drives (TGT)
    Planetary Screw Drives
    General Technical Data
    Designing
    Standart Program
    Nut Regidity Values
    Application
    Technical Calculate
  • Ball Splien Shaft Groups
  • Rack and Pinions
  • Linear Guides Elements
  • Rotate Guides Elements
  • Timing Belts and Pulleys
  • Other Motion Elements
  • Motion Modules
  • Motion Accessories
  • Ball Screw Drives Group
    Planetary Screw Drives
  • High dynamic load capacity.
  • High efficiency.
  • Positional accuracy.
  • Long life and low maintenance.
  • Same nut fits both right and left handed screws.
  • Hardened and ground rolling elements.
  • Clean operation.
  • Low noise.
  • General Technical Data
    The satellite roller screw is a precision element to transform a rotary movement into a linear movement. It is similar to a ball screw with the difference that the balls are replaced by threaded rollers. The rollers are constantly engaged with the threads of the screw and the nut. The high number of points of contact allows the satellite roller screw to support heavier axial loads.

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    Designing
    RV AND BRV
      When the screw turns, the satellite rollers move as the lead on the screw. In this execution the rollers are in constant contact with the thread of the screw and the thread of the nut. The rollers do not move axialy relative to the nut and are not recycled. Due to its design this execution is particular suitable for applications where high axial loads, high speed, and high feed speeds are requested. RV and BRV may be distinguished from each other by the execution of the screw. The RV screw has a grounded thread whereas the BRV has a rolled one.
    RVR
      The RVR execution is designed for small leads and is used where a high positioning precision is required in association with high stiffness and heavier axial loads. As the rollers are recycled after each of their revolutions, this design is not suitable for high speeds.

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    Nut Regidity Values
    Diameter Ø [mm] Lead [mm] Load [kN] Type Detailes
     3,5 .... 12  1 .... 8  3,2 .... 19  RV  
     15 .... 23  2 .... 10  8,7 .... 82,7  RV  
     25 .... 36  2 .... 20  31,6 .... 155,8  RV  
     39 .... 48  2 .... 30  76,8 .... 495,7  RV  
     51 .... 75  5 .... 36  135,4 .... 1265  RV  
     80 .... 150  5 .... 36  374 .... 3535  RV  
     8 .... 44  4 .... 30  2,6 .... 166,2  BRV  
     8 .... 100  0,5 .... 5  5,1 .... 1431  RVR  
    Application

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    Technical Calculate

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