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Fluid dynamic bearings (in-house-production parts)

Fluid dynamic bearings

In a fluid dynamic bearing (FDB), a thin layer of oil or other lubricant is injected between the shaft and sleeve. The structure of the bearing features a rotating shaft, which generates a hydrodynamic force, causing the shaft to rotate. The non-contact construction of this bearing makes it particularly suited for improving rotational accuracy and enhancing quietness and robustness.
Minebea has cultivated ultra-precision machining technologies that ensure a high quality in-house-production of FDBs for its high-precision HDD spindle motors.

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