Tribology Tools

Engineering calculators for lubrication, contact, wear, and oil-property analysis.

Available now

Tribology

Lambda Ratio Calculator

Estimate EHL film thickness and classify the lubrication regime (boundary / mixed / full-film) from contact and lubricant inputs.

Specific Wear Rate Calculator

Live

Compute wear volume and specific wear rate k [mm³/(N·m)] from surface data, applied load, and sliding distance.

Stribeck Curve Visualizer

Live

Drag sliders for viscosity, speed, pressure, and roughness and feel the friction coefficient move through boundary, mixed, and hydrodynamic regimes — with a live contact-surface view.

Oil Properties

Viscosity Index & Temperature Calculator

Live

Calculate viscosity index (ASTM D2270) and plot the viscosity-temperature curve (ASTM D341).

Oil Blend Calculator

Live

Calculate the resulting viscosity when blending two oils (Refutas equation).

Coming soon

Contact Pressure Calculator

Soon

Compute Hertzian contact pressure distribution for ball-on-flat, ball-on-ball, and cylinder-on-flat configurations.

Minimum Film Thickness Calculator

Soon

Dedicated tool for central and minimum EHL film thickness with extended viscosity-pressure models.