Spindle Angular-Contact Duplex Bearing Preload Shim Grinding Micrometer Solver

Deterministic Hertzian ball-raceway contact axial deflection δ_a = C_h·(F_a / (Z·sin α))^(2/3) & differential spacer stack ΔH = H_outer - H_inner ± δ_preload engine (.pdf, .csv) built for NSK, FAG Schaeffler, SKF Super-Precision, NTN — zero-upload ephemeral Wasm RAM execution.

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