Hydrostatic Oil-Film Stiffness Above 500 N/μm: What It Means

Key Takeaways:

High-end hydrostatic systems reach oil-film stiffness above 500 N/μm—5–10× that of rolling bearings. Stiffness this high resists cutting force and load deflection, protecting accuracy.

Hydrostatic Oil-Film Stiffness Above 500 N/μm: What It Means
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hydrostatic oil film stiffness 500 N per micron hydrostatic stiffness bearing stiffness comparison high stiffness bearing
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🇷🇺 Русский

Жёсткость масляной плёнки гидростатики свыше 500 Н/мкм: что это значит

Жёсткость просто

Жёсткость — сила на микрон прогиба. Плёнка даёт >500 Н/мкм.

5–10× роликовых

Это в 5–10 раз выше. Максимум — у мембранного дросселя с непрерывной компенсацией. Меньше прогиб под нагрузкой.

Защита точности

Меньший прогиб — лучше геометрия и чистота, особенно при тяжёлом шлифовании.

🇻🇳 Tiếng Việt

Độ cứng màng dầu thủy tĩnh trên 500 N/μm: ý nghĩa ra sao

Độ cứng đơn giản

Độ cứng là lực trên micrôm lún. Màng >500 N/μm.

5–10× ổ lăn

Cao gấp 5–10 lần. Tối đa nhờ tiết lưu màng bù áp liên tục. Ít lún hơn dưới tải.

Bảo vệ độ chính xác

Ít lún — hình học và bề mặt tốt hơn, nhất là mài nặng.

🇫🇷 Français

Raideur du film d'huile hydrostaticque supérieure à 500 N/μm : signification

Raideur en clair

La raideur est la force par micron de fléchissement. Le film donne >500 N/μm.

5–10× roulements

C'est 5–10× plus élevé. Maximum avec restrictieur à membrane à compensation continue. Moins de fléchissement sous charge.

Protéger la précision

Moins de fléchissement—meilleure géométrie et finition, surtout en meulage lourd.

🇩🇪 Deutsch

Ölfilm-Steifigkeit der Hydrostatik über 500 N/μm: was das bedeutet

Steifigkeit einfach

Steifigkeit ist Kraft pro Mikrometer Durchbiegung. Der Film liefert >500 N/μm.

5–10× Wälzlager

Das ist 5–10× höher. Maximal bei Membrandrossel mit ständiger Kompensation. Weniger Durchbiegung unter Last.

Schutz der Genauigkeit

Weniger Durchbiegung—bessere Geometrie und Oberfläche, besonders beim schweren Schleifen.

Stiffness in Plain Terms

Stiffness is how much force is needed to deflect the support by a given amount. A hydrostatic oil film can reach stiffness above 500 N/μm, meaning it takes more than 500 newtons to push the film down by a single micron.

Hydrostatic oil film stiffness

5–10× Rolling Bearings

This is 5–10× the stiffness of a comparable rolling bearing. The highest stiffness comes from membrane-feedback restrictors, which continuously compensate cavity pressure as load changes. Higher stiffness means cutting forces and workpiece weight deflect the support far less.

Why It Protects Accuracy

Less deflection under load translates directly into better geometric accuracy and surface finish—especially in heavy grinding or large rotary-table work where load varies through the cycle.