HOLDING FORCE
CALCULATOR
Pick a Blumag with confidence Combine our measured pull-force data with your job parameters plate thickness air gap load angle and friction to estimate real-world holding force and safety factor
The numbers that decide whether your magnet holds
PLATE THICKNESS
Thinner steel saturates faster, dropping pull force. We factor in plate thickness so the prediction matches reality, not the spec sheet.
AIR GAP
Paint, rust, marine growth and uneven surfaces leave a gap between magnet and steel. Even a fraction of a millimeter reduces grip dramatically.
LOAD ANGLE & FRICTION
Pulling perpendicular is best-case. Shear loads rely on friction — typically 20–30% of the rated force, depending on the surface.
Magnet Calculator
Enter your job parameters and we'll email you the predicted holding force and safety factor for every Blumag.
Applied load
The maximum load that will be applied on the magnet.
Load angle
0° = lateral, 90° = perpendicular.
Air gap
The distance between magnet and steel surface (paint, marine growth, rust).
Plate thickness
Thinner steel may lead to saturation.
Friction coefficient
Friction helps at angles below 90°.
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Calculations are based on Blumags measurement data.
Need help? Contact us.
Our team is here to answer your questions and guide you to the right Blumag for your job.