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Noctua SSO-Bearing
Thanks to an optimised principle of operation, the self-stabilising oil-pressure bearing (SSO bearing) surpasses current types of ball, sleeve or liquid bearings in terms of long-term stability and quietness.

    Noctua - Bild
    The rotary motion of the axis generates pressure upon the special oil enclosed within the bearing. This causes the build-up of a dynamic pressure field that centres and stabilises the axis within the bearing shell. While conventional liquid bearings employ the principle of hydrodynamic pressure too, the SSO bearing is equipped with an additional magnet that supports the self-stabilisation of the rotor axis. This allows for a faster, more precise and more reliable centring of the rotor axis and thus increases the long-term stability and quietness of the bearing: When the fan starts, the dynamic pressure field of the liquid bearing needs to build up first, which results in an initial precession of the axis, the so called gyro effect. This amounts to an increased abrasion until the axis is stabilised through the build-up of the dynamic pressure field, which may by and by lead to increased noise emission and bearing defects. Because of this, the SSO bearing possesses a built in magnet, whose field ensures the immediate self-stabilisation of the rotor and hence reduces the gyro effect. In addition to the stabilisation during the start-up phase of the fan, the supporting magnet allows for a more exact centring of the axis within the bearing shell and thus further reduces bearing resistance, abrasion and noise emission.

    Noctua - Bild





    Noctua - Bild
    The sleeve and ball bearings currently predominating the fan market exhibit major drawbacks: While conventional sleeve bearings initially have very low noise emissions, they mostly possess unsatisfying long-term stability, which leads to a short overall lifespan and increasing noise after longer operating times. High grade ball bearings, on the other hand, while providing satisfying long-term stability operate at slightly higher noise levels from the beginning. The SSO bearing not only surpasses the quietness of conventional sleeve bearings but also the long-term stability of current top-of-the-line ball bearings.

    Noctua - Bild




Noctua
21.08.2014 - kingdomgame NH-D15
Test verdict: "Noctua è leader nella dissipazione per processori e si vede! Con la sua nuova punta di diamante è riuscita a portare avanti la reputazione che l'NH-D14 si era conquistata meritatamente!" (Andrea Megna, kingdomgame.it)
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20.08.2014 - hwmind.it NF-F12 industrialPPC-2000 PWM
Test verdict: "I prodotti Noctua da sempre sono sinonimo di eleganza, resistenza e qualità, ed attraverso questo esame non possiamo far altro che riconfermare." (La Scuola Salvatore, hwmind.it)
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19.08.2014 - [blank],s Universe NF-F12 industrialPPC-2000 PWM
Test verdict: "Noctua Industrial PPC fans are a must buy for people who have to constantly replace their fans due to dust or debris entering and damaging the fans. They are also suited for users who want the performance and silence of a Noctua fan, but want it in black." (Martin Tam, [blank]'s Universe)
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19.08.2014 - SweClockers.com NH-D15
Test verdict: "Sammantaget är Noctua NH-D15 den bästa luftkylaren som hittills passerat genom SweClockers testlabb. Entusiaster som klarar av prislappen på närmare 800 kronor och inte har något emot de karakteristiskt färgsatta fläktarna kan se fram emot en produkt i absoluta toppklassen." (Emil Åkered, SweClockers.com)
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