• Strain Wave

    A Unique Perspective on Strain Wave Gear


    Traditionally, the design of a rigid gear sold on the market is based on “Conjugate Meshing Theory” (Willis’s Theorem). However, Harmonic gear Systems Co.,Ltd’s engineers have discovered that Strain Wave Reducermeshing is more complex than that. Instead, strain wave gearing meshing can be more accurately described by the Geometric Mapping Theory of Curves. By incorporating this theory into the design, this patented technology has greatly improved the meshing of strain wave gearing, differentiating the product from competitors. The design can also be further extended to high ratio rigid reducers for better precision and control.






    The unique P-type profile has distinctive advantages over a typical profile:

    1. Lower profile reduces bending stress at the base to improve torque capacity.

    2. Wide tooth base and streamlined profile transition reduces core stress concentration.

    3. Lower profile reduces displacement and strain in the Flexspline, leading to longer Flexspline life.

    4. More 20-30% of tooth surface than competitor in meshing contact to reduce surface contact pressure.