Hydrostatic shallow-pocket liquid thrust bearing — fixed reference geometry

Reference-geometry calculator (Ø40mm bearing, 5µm film — fixed, matching the original) for a hydrostatic shallow-pocket liquid thrust bearing fed through a small central inlet hole. Vary pocket/inlet diameter, pressures and viscosity.

✓ gevalideerd tegen origineelorigineel: /calculators/c11_1a.htm

Hydrostatic shallow-pocket liquid thrust bearing — fixed reference geometry — original diagram from /calculators/c11_1a.htm

Kamerdiameter, 2R₁10⁻³ mToevoerdiameter, 2R₂10⁻³ mVoedingsdruk, pₛ10⁶ PaOmgevingsdruk, pₐ10⁶ PaViscositeit, ηPa·s

Draagvermogen, F283.4 N

Dimensieloze belasting, F′0.564

Inherente stijfheid, S = −dF/dh24.2 10⁶ N/m

Debiet, Q0.232 10⁻³ l/min

Dimensieloos debiet, Q′1.549

Drukfactor, β0.66

The legacy "please login" demo lock froze D0/H0/H2 to these exact values. Per docs/phase6/OWNER-DECISIONS-BACKLOG.md K4, this fixed geometry is kept exactly as in the original and only the inputs that were already free under the lock are exposed. Generalizing it is a deliberate future decision for Anton, not made here.

Methode & referenties

The larger the pocket 2R₁, the larger the load capacity and self-aligning capability.
A smaller inlet 2R₂ favors self-alignment but may cause a local pressure drop from inertia forces.
FIXED GEOMETRY: bearing diameter 40 mm, film thickness 5 µm, pocket depth = film thickness — the original demo lock froze these three together.

De berekening is een letterlijke overzetting van de originele client-side JavaScript van /calculators/c11_1a.htm. Resultaten zijn geverifieerd gelijk aan het origineel via een geautomatiseerde golden-master-test. Geen enkele formule is opnieuw afgeleid of “verbeterd”.

Hydrostatic shallow-pocket liquid thrust bearing — fixed reference geometry — Engineering ABC