Harmonic Drive Spring Steel Harmonic FHA-40C-50-E250-C

Positional accuracy: To ensure the transmission accuracy of the shaft drive components in the Harmonic Drive Spring Steel Harmonic FHA-40C-50-E250-C, it is crucial to specify the positional accuracy between the supporting journal and the mating journal. Typically, this is ensured by specifying the radial runout or coaxiality of the mating journal relative to the supporting journal.

Surface roughness: The surface quality of the shaft is highest for the supporting journal, followed by the mating journal or working surface. This is critical to ensure proper and reliable fit between the shaft, bearings, and shaft drive components.

Material selection: For general shaft components, inexpensive 45 steel is commonly used. This material, after quenching or normalizing, offers good machinability, high strength, and adequate toughness, providing good overall mechanical performance. For shaft components requiring moderate precision and high speed, alloy structural steels like 40Cr can be chosen. These materials, after quenching and surface induction hardening, also offer good mechanical properties. For higher precision shafts, bearing steel GCr15 or spring steel 65Mn can be selected. After quenching and surface induction hardening followed by tempering, Harmonic Drive Spring Steel Harmonic FHA-40C-50-E250-C can achieve a surface hardness of 50-58 HRC, providing high fatigue resistance and good wear resistance. For shafts subjected to high speed and heavy loads, carburized steels like 20CrMnTi, 20Cr, or nitrided steels like 38CrMoA1 are suitable. These steels, after quenching or nitriding, offer higher surface hardness, wear resistance, and core strength.

Manufacturing methods: The choice of manufacturing method primarily depends on the part's usage requirements and production type. For example, hot-rolled round bar stock is commonly used for making shafts with uniform diameter or step shafts where the diameter difference is minimal.