PARTIAL: the available page depicts generic external-gear pump topology—a casing, driving gear, idler gear and fluid carried around the outside of the meshing gears. The historical mapping of the local label “form 1” remains unresolved, and the prior slip-efficiency calculator is not supported.
Partial External-Gear Pump Topology Visual
Inspect a partial generic external-gear pump topology without unsupported slip or efficiency outputs.
Equation Used
- The displayed layout is generic external-gear pump topology.
- Gear centers and casing are fixed in the illustration.
- Dots show qualitative carried fluid path only.
- Geometry, clearances, fluid properties, pressure, speed, losses and ratings are unspecified.
The historical mapping remains unresolved for the local “form 1” label.
Generic external-gear topology
Two meshing gears rotate in a close casing. Spaces between gear teeth and casing can carry fluid around the outside from inlet toward outlet, while the gear mesh separates the sides.
The animation highlights this generic component relationship. It does not dimension tooth spaces, clearances, ports, bearings or seals, and it does not claim that every historical source used “form 1” for this exact arrangement.
What the partial visual demonstrates
The cycle control highlights the casing, driving gear, idler gear and carried-fluid path. The two displayed gears rotate oppositely with fixed centers.
No displacement, flow, slip, efficiency, pressure, torque, power, viscosity effect, cavitation margin or safe operating value is calculated.
No general slip or efficiency calculator is supported
The removed model assumed 95% efficiency at one arbitrary baseline, invented a viscosity exponent, applied a linear clearance penalty, scaled leakage with pressure and capped slip at 60%. Those coefficients were not tied to a documented pump geometry, fluid model or manufacturer test map.
Real volumetric efficiency must be obtained from a validated pump model or measured operating-point data for the actual fluid, temperature, pressure, speed, clearances and condition.
Reading the partial topology visual
Use the cycle control to follow one illustrative rotation and change the highlighted component group. The moving dots show a qualitative carried path only; they do not represent volume, velocity, pressure or leakage.
A complete engineering model would require documented displacement geometry and manufacturer or test data across the relevant operating range.
Correction and unresolved boundary
The former article supplied universal clearances, viscosities, pressures, efficiencies, wear, cavitation, relief and maintenance guidance plus named product applications and a fabricated ink-transfer example without a defined pump or primary support.
Those claims and the unrelated video are removed. This remains PARTIAL because historical form-label correspondence has not been established from a primary catalog plate.
Questions
Does the visual predict flow?
No. The dots only show a qualitative path.
Can viscosity, pressure and clearance alone predict slip?
No. Geometry, leakage paths, fluid behavior, temperature, speed and test data are also required.
Is “form 1” a current pump standard?
No current performance standard is established here. The local historical label still needs primary-source mapping.
Can the visual be used for pump selection?
No. Use manufacturer curves and applicable Hydraulic Institute methods for the specified duty.
Technical references
- Hydraulic Institute — pump standards and system guidance for real selection and assessment.
- OpenStax College Physics, Flow Rate — volumetric-flow definitions.
- NIST Special Publication 811 — SI unit and conversion guidance.
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