Extra Quality K93n Na1 Kansai Chiharu Haitienne Roller 168 Fix May 2026

  • NA1 Alignment Correction

  • Chiharu Spec Compliance

  • Roller 168 Fix – Known Issues Resolved NA1 Alignment Correction

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    The 168 Fix’s cryogenic step stabilizes the martensitic phase in NA1, while the 168 N·m final torque eliminates micro-slip during grinding. The “Kansai–Chiharu” collaboration resolved prior inconsistencies in Haitian laboratory roller tests. Extra quality is achievable if cooling rate ≤1.68 °C/min during the −168 °C soak.