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Съдържание СКРИЙ

1 cURL Too many subrequests by single Worker invocation. To configure this limit, refer to https://developers.cloudflare.com/workers/wrangler/configuration/#limits

2 What does the magnet calculator do?

3 What assumptions affect accuracy?

4 What input parameters can I adjust?

5 What does the result really mean?

6 How does the calculator work?

7 Where can I learn more?

8 Заключение

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magnetic pull force

If you’ve ever needed to know how strong a magnet really is before buying or testing it, a pull force calculator is a great tool. But it’s important to understand what it can—and can’t—tell you.

What does the magnet calculator do?

Sometimes people think magnet calculators work like magic. But in fact, they rely on science and assumptions.

The calculator estimates how much force it takes to pull a magnet directly away from a thick, flat steel surface, under ideal conditions.

How the calculator works

The pull force is calculated using formulas based on the magnet’s size, shape, material grade, and the steel it touches.

Here’s how it works:

Flat surface only: The steel must be large, thick, and smooth.
Direct contact: No gap between the magnet and the steel unless specified.
Straight pull: The magnet is pulled directly away, not at an angle.

These assumptions make it easier to compare magnet types, but they don’t reflect every real-world setup.

Common input assumptions

Параметър	Значение	Защо е важно
Magnet shape	Block, cylinder, ring, etc.	Shape affects contact area and force
Степен на магнит	N35, N42, N52, etc.	Higher grades are stronger
Dimensions	Diameter, height, length, width	Larger magnets usually pull harder
Air gap	Distance between magnet and steel	Even 0.1mm reduces force dramatically

You can change these to explore how performance changes in theory.

What assumptions affect accuracy?

It’s easy to trust a number on the screen. But magnet pull calculators are not perfect.

The results assume ideal lab conditions. In the real world, surface roughness, coating, temperature, or pull angle can reduce the actual force.

When the numbers are misleading

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What input parameters can I adjust?

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Magnet Shape

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Магнитна класа

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This simulates coatings, paint, or slight misalignment. Even a small gap makes a big difference. Always test with a realistic air gap if you’re planning for real-world use.

Форма	Обичайно приложение	Strength Impact
Block	Fixtures, mounts	High contact area
Диск	DIY, crafts	Good all-rounder
пръстен	Sensors, rotational tools	Specialized use
Cylinder	Push/pull applications	High pull force

What does the result really mean?

Many users treat the calculator’s number as the magnet’s real-life limit. But that’s only part of the story.

The calculator shows the theoretical maximum holding force—usually much higher than what you’ll see in practice.

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Why the real pull might be lower

The actual usable holding power depends on how the magnet is mounted, what it’s holding onto, and how much shear force is involved.

For example, a 20 lb pull force might only hold 5–10 lbs in a sideways sliding situation.

Also, shock or vibration can shake magnets loose, even if the calculator says the force is strong.

Here’s a rough guide:

Estimated Pull	Practical Use Holding Weight
5 lb	1–2 lb
20 lb	5–10 lb
50 lb	15–25 lb

How does the calculator work?

People often ask if the calculator uses real data. It doesn’t use physical test results—it uses math.

It applies standard magnetic force equations to estimate pull force based on input values.

Magnetic force equations

How pull force is calculated

The force between a magnet and steel plate can be estimated using the formula:

F = (B² × A) / (2 × μ₀)

Where:

F = Pull force
B = Magnetic flux density
A = Area of contact
μ₀ = Permeability of free space

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Where can I learn more?

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Заключение

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