Electromagnet Pull Force
Estimate the lifting force of an electromagnet from the flux density at the pole faces, free online.
À propos de cette calculatrice
The attractive force across an air gap is F = B² A ÷ (2μ₀) per pole face. At B = 1 T the pull is about 40 N per cm² (≈ 4 kgf/cm²). The force falls with the square of the flux density, so a small air gap greatly increases holding force.