Mechanical engineering
Learn to size machine elements with verified steps. Shafts, bolts and gears.
Lessons
Lessons are in Slovenian for now; English translations are in preparation.
Osi in gredi
Loads, sizing and material selection.
Vijačne zveze
Threads, preload and strength of bolted joints.
Zobniška gonila
Gear ratio, gear modules and power transmission.
Key formulas
Concept
Formula
Torsional stress
τ = T / W_p
Gear ratio
i = n₁ / n₂ = z₂ / z₁
Rotational power
P = T · ω