What does Marusaku Seiko manufacture?

Marusaku Seiko manufactures precision hydrostatic rotary tables, hydrostatic spindles, gear hobbing machines, gear cutting machines, and drum gear couplings for industrial applications.

How long has Marusaku Seiko been in precision manufacturing?

Marusaku Seiko has over 30 years of experience in precision mechanical manufacturing.

Does Marusaku Seiko provide OEM and ODM services?

Yes, Marusaku Seiko provides OEM and ODM services for hydrostatic spindles, rotary tables, and gear processing machinery.

What is the rotary positioning accuracy of Marusaku hydrostatic rotary tables?

Marusaku Seiko hydrostatic rotary tables deliver a rotary positioning accuracy of up to ±0.001 mm.

Which industries use Marusaku Seiko products?

Products are used in CNC machine tools, aerospace, automotive, robotics, and precision automation equipment.

Hydrostatic vs Rolling Bearings: A Complete Comparison

Key Takeaways:

Compare hydrostatic and rolling bearings across friction, runout, stiffness, life, low-speed behaviour, damping, thermal stability, and speed range to see where hydrostatic wins.

September 24, 2026 Marusaku Seiko Technical Team

Hydrostatic vs Rolling Bearings: A Complete Comparison

Tags:

hydrostatic vs rolling bearing hydrostatic advantages rolling bearing limitations non-contact bearing bearing runout comparison

Available Languages

🇷🇺 Русский

Гидростатические vs роликовые подшипники: полное сравнение

Сравнение

Гидростатика заменяет контактные тела масляной плёнкой. Различия фундаментальны: трение чисто жидкостное, биение ≤0,1 мкм (у топа 0,02), жёсткость 5–10×, ресурс практически бесконечный, нет ползания на малых скоростях, лучшее гашение вибраций и тепла.

Где побеждает гидростатика

Сверхточность, большая нагрузка при малой скорости, зеркальная чистота, виброчувствительная обработка. Роликовые дешевле для массовых и лёгких скоростных задач.

Компромисс

Нужны насос, фильтрация, управление; выше цена и расход. Выбирайте с учётом точности против сложности.

🇻🇳 Tiếng Việt

Thủy tĩnh so với ổ lăn: so sánh đầy đủ

So sánh

Thủy tĩnh thay con lăn bằng màng dầu. Khác biệt căn bản: ma sát thuần chất lỏng, đồng tâm ≤0,1 μm (cao cấp 0,02), cứng 5–10×, tuổi thọ gần vô hạn, không trượt rít tốc thấp, giảm chấn và tản nhiệt tốt.

Thủy tĩnh thắng ở đâu

Siêu chính xác, tải lớn tốc thấp, bề mặt gương, gia công nhạy rung. Ổ lăn rẻ hơn cho loạt lớn và tốc độ nhẹ.

Đánh đổi

Cần bơm, lọc, điều khiển; giá và điện cao hơn. Cân nhắc độ chính xác so với độ phức tạp.

🇫🇷 Français

Hydrostatique vs roulements : comparaison complète

Comparaison

L'hydrostatique remplace les corps roulants par un film d'huile. Les différences sont fondamentales : frottement purement liquide, défaut de marche ≤0,1 μm (haut de gamme 0,02), raideur 5–10×, durée de vie quasi infinie, pas de rampement lent, meilleur amortissement et refroidissement.

Où l'hydrostatique gagne

Ultra-précision, forte charge lente, finition miroir, usinage sensible aux vibrations. Les roulements restent économiques en série et pour charges légères rapides.

Compromis

L'hydrostatique exige pompe, filtration, régulation; coût et énergie plus élevés. Peser précision contre complexité.

🇩🇪 Deutsch

Hydrostatik vs. Wälzlager: Ein vollständiger Vergleich

Gegenüberstellung

Die Hydrostatik ersetzt die Wälzkörper durch einen Ölfilm. Die Unterschiede sind grundlegend: reine Flüssigkeitsreibung, Rundlauf ≤0,1 μm (Spitze 0,02), Steifigkeit 5–10×, nahezu unbegrenzte Lebensdauer, kein Kriechen bei niedriger Drehzahl, bessere Dämpfung und Wärmeabfuhr.

Wo die Hydrostatik gewinnt

Ultrapräzision, hohe Last bei niedriger Drehzahl, Spiegelglätte, vibrationskritische Bearbeitung. Wälzlager bleiben günstig für Serie und leichte Hochgeschwindigkeit.

Abwägung

Hydrostatik braucht Pumpe, Filterung, Regelung; höhere Kosten und Energie. Nutzen und Komplexität abwägen.

Side-by-Side

Hydrostatic support replaces solid-contact rolling elements with a pressurized oil film. The differences are fundamental:

Metric	Hydrostatic	Rolling Bearing
Friction	Pure liquid, non-contact	Solid contact
Radial runout	≤0.1 μm (high-end 0.02 μm)	Hard to reach sub-micron
Stiffness	5–10× rolling bearing	Baseline
Life / wear	Theoretically infinite	Limited, replaceable
Low speed	No crawling	Possible crawling
Vibration damping	Oil film, fast decay	Weaker
Thermal	Oil carries heat uniformly	Local heating
Speed	Low to tens of thousands rpm	Limited

Where Hydrostatic Wins

For ultra-precision, heavy load at low speed, mirror finishing, and vibration-sensitive work, hydrostatic support is decisively better. Rolling bearings remain cost-effective for general-duty, high-volume, and very high-speed-light-load roles.

Trade-Off

Hydrostatic systems need a pump station, filtration, and control, with higher initial cost and energy use. Selection should weigh precision/stiffness gains against system complexity.