Unlike rolling bearings, hydrostatic support works from near-zero speed to tens of thousands of rpm. Understand the broadband capability that suits both heavy creep-feed grinding and high-speed finishing.
У роликовых подшипников диапазон ограничен динамикой сепаратора. У гидростатики предела нет — плёнка стабильна от покоя до высоких скоростей.
На малых оборотах — без ползания, жёстко, для силового шлифования.
На десятках тысяч об/мин плёнка центрирует без износа, давая высокоскоростную чистовую обработку.
Один гидростатический шпиндель берёт черновую, чистовую и скоростную работу.
Ổ lăn giới hạn bởi sep. Thủy tĩnh không có — màng ổn từ đứng yên đến tốc cao.
Tốc thấp: không bò, cứng, cho mài ngậm sâu.
Hàng chục ngàn vòng: màng tâm không mòn, tốc cao chạy tốt.
Một trục thủy tĩnh làm thô, tinh và tốc cao.
Les roulements ont une plage limitée. L'hydrostatique non—le film est stable de l'arrêt aux hautes vitesses.
Au bas régime, le film porte sans rampement pour le meulage lourd.
Aux dizaines de milliers de tr/min, le film centre sans usure, permet la finition rapide.
Cette large bande permet à une seule broche de couvrir ébauche, finition et grande vitesse.
Wälzlager haben einen begrenzten Drehzahlbereich. Die Hydrostatik nicht—der Film ist von Stillstand bis Hochgeschwindigkeit gleichmäßig.
Bei niedriger Drehzahl trägt der Film kriechfrei und steif für Schwerzerspanung.
Bei Zehntausenden U/min zentriert der Film ohne Verschleiß, ermöglicht Hochgeschwindigkeitsfertigung.
Diese Breitbandigkeit lässt eine hydrostatiche Spindel Schruppen, Schlichten und Schnelllauf abdecken.
Rolling bearings have a limited comfortable speed range tied to cage and ball dynamics. Hydrostatic support has no such limit—the oil film behaves consistently from standstill to very high surface speeds.
At low rpm the film gives crawl-free, high-stiffness support for heavy creep-feed grinding and precise indexing.
At tens of thousands of rpm the same film keeps the spindle centered without contact wear, enabling high-speed finishing that rolling elements struggle to sustain.
This broadband behaviour lets a single hydrostatic spindle serve roughing, finishing, and high-speed duties—reducing the need for multiple dedicated spindles and simplifying the machine.
Ultimate speed is still set by motor, balance, and thermal design, but the bearing itself is not the limiting factor.
