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FLEXWAVE Zero Backlash Harmonic Gearing

Nidec-Shimpo America

NIDEC-SHIMPO has a history of supplying the leading robotics and machine tool manufacturers in Japan. Our loyal customers within these industries strongly urged us to develop our own harmonic gear technology and leverage our primary competencies—modularity and flexibility of the core design and highly consistent production in mass volume—to help them become more competitive in the global marketplace. After extensive effort to refine harmonic gear technology and to manufacture at a level that exceeds customer expectations, NIDEC-SHIMPO has released the FLEXWAVE.

The FLEXWAVE is a compact harmonic gear reduction mechanism that achieves zero backlash, as well as exceptional positioning accuracy, torque density and repeatability. The FLEXWAVE consists of three internal elements—the flexspline, the circular spline and the wave generator. The elasticity properties of the flexspline and the teeth differential between the flexspline and the circular spline result in its unique reduction characteristics.

The FLEXWAVE comes in various form factors, including component sets, simple contained assemblies and complete gear units. Open, closed, solid and hollow shaft configurations give engineers true freedom in design. The FLEXWAVE is also available in Ultra-Flat and High Torque variations for applications with demanding footprint and performance requirements. Dimensions are interchangeable against industry standards, making it easier to implement in legacy equipment. When compared with other gear technologies, the FLEXWAVE offers the following advantages:

  • Exceptional Repeatability and Positional Accuracy
  • Zero Backlash
  • High Torque Density
  • High Efficiency Ratings
  • High Reduction Ratios in a Single Stage
  • Light Weight and Compact
  • High Torsional Stiffness
  • Fully Back Drivable

These characteristics enable the FLEXWAVE to be the superior choice for Robotics, Machine Tool, Medical Equipment, Semiconductor Manufacturing, Satellite Communications and Assembly Automation applications.



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