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MW 4x4 / N38 - cylindrical magnet

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

cylindrical magnet

Catalog no 010076

GTIN/EAN: 5906301810759

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

4 mm [±0,1 mm]

Weight

0.38 g

Magnetization Direction

↑ axial

Load capacity

0.51 kg / 4.96 N

Magnetic Induction

552.79 mT / 5528 Gs

Coating

[NiCuNi] Nickel

see technical specifications »

0.406 ZŁ with VAT / pcs + price for transport

0.330 ZŁ net + 23% VAT / pcs

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Pick up the phone and ask +48 22 499 98 98 alternatively contact us through our online form the contact section.
Strength and form of neodymium magnets can be checked on our force calculator.

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Product card - MW 4x4 / N38 - cylindrical magnet

Specification / characteristics - MW 4x4 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010076
GTIN/EAN	5906301810759
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	4 mm [±0,1 mm]
Height	4 mm [±0,1 mm]
Weight	0.38 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.51 kg / 4.96 N
Magnetic Induction ~ ?	552.79 mT / 5528 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x4 / N38 - cylindrical magnet

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [min. - max.] ?	36-38	BH max MGOe
energy density [min. - max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅cm
Bending strength	250	MPa
Compressive strength	1000~1100	MPa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Technical simulation of the product - report

The following data constitute the outcome of a engineering analysis. Results are based on algorithms for the material Nd₂Fe₁₄B. Operational conditions may differ. Treat these calculations as a reference point for designers.

Table 1: Static pull force (pull vs gap) - power drop
MW 4x4 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	5517 Gs 551.7 mT	0.51 kg / 1.12 lbs 510.0 g / 5.0 N	safe
1 mm	2984 Gs 298.4 mT	0.15 kg / 0.33 lbs 149.2 g / 1.5 N	safe
2 mm	1498 Gs 149.8 mT	0.04 kg / 0.08 lbs 37.6 g / 0.4 N	safe
3 mm	803 Gs 80.3 mT	0.01 kg / 0.02 lbs 10.8 g / 0.1 N	safe
5 mm	296 Gs 29.6 mT	0.00 kg / 0.00 lbs 1.5 g / 0.0 N	safe
10 mm	58 Gs 5.8 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	safe
15 mm	20 Gs 2.0 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe
20 mm	9 Gs 0.9 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe
30 mm	3 Gs 0.3 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe
50 mm	1 Gs 0.1 mT	0.00 kg / 0.00 lbs 0.0 g / 0.0 N	safe

Magnetic force decreases sharply with every subsequent millimeter of gap. Keep in mind that every additional insulation layer (e.g., contamination, varnish, dust) noticeably weakens the grip. Magnets work strongest in perfect adhesion; gap drastically cuts the force. Analyze how rapidly the load capacity drop, when the magnet does not adhere directly to the steel surface. When designing the arrangement, eliminate redundant distances.

Table 2: Vertical capacity (wall)
MW 4x4 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.10 kg / 0.22 lbs 102.0 g / 1.0 N
1 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 30.0 g / 0.3 N
2 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
3 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 g / 0.0 N
5 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
10 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
15 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
30 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 0.0 g / 0.0 N

The following data shows the theoretical force needed to cause the sliding of the magnet downwards on a vertical metal surface (assuming standard friction). This parameter is relative to the separation distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - vertical pull
MW 4x4 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.15 kg / 0.34 lbs 153.0 g / 1.5 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.10 kg / 0.22 lbs 102.0 g / 1.0 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.05 kg / 0.11 lbs 51.0 g / 0.5 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.26 kg / 0.56 lbs 255.0 g / 2.5 N

When mounting a element on a vertical plane (e.g., a fridge), it will only hold only approx. 1/5 of nominal attraction strength. Gravity and a low friction coefficient influence the fact that magnets slide down faster than they pop off the substrate. Want to create a wall mount? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a smooth steel, the magnet will give way down under a much lighter cargo. Utilizing a rubberized layer can significantly increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MW 4x4 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.05 kg / 0.11 lbs 51.0 g / 0.5 N
1 mm	25%	0.13 kg / 0.28 lbs 127.5 g / 1.3 N
2 mm	50%	0.26 kg / 0.56 lbs 255.0 g / 2.5 N
3 mm	75%	0.38 kg / 0.84 lbs 382.5 g / 3.8 N
5 mm	100%	0.51 kg / 1.12 lbs 510.0 g / 5.0 N
10 mm	100%	0.51 kg / 1.12 lbs 510.0 g / 5.0 N
11 mm	100%	0.51 kg / 1.12 lbs 510.0 g / 5.0 N
12 mm	100%	0.51 kg / 1.12 lbs 510.0 g / 5.0 N

A thin sheet is unable to conduct the entire magnetic field, which squanders power of the holder. Should you mount a strong magnet to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To utilize 100% of this magnet's power, you need a suitably thick backing of metal. The saturation effect means that on delicate walls (e.g., car bodies), the product holds weaker. We suggest choosing the steel thickness from these parameters.

Table 5: Thermal resistance (stability) - power drop
MW 4x4 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.51 kg / 1.12 lbs 510.0 g / 5.0 N	OK
40 °C	-2.2%	0.50 kg / 1.10 lbs 498.8 g / 4.9 N	OK
60 °C	-4.4%	0.49 kg / 1.07 lbs 487.6 g / 4.8 N	OK
80 °C	-6.6%	0.48 kg / 1.05 lbs 476.3 g / 4.7 N
100 °C	-28.8%	0.36 kg / 0.80 lbs 363.1 g / 3.6 N

Ordinary NdFeB products irreversibly lose power above the temperature limit. Avoid high temperatures – excessive heat can permanently demagnetize this product. As the temperature rises, the magnet's capacity temporarily drops. Do not use this magnet near heat sources higher than its working range. Too high temperature will result in permanent loss of magnetic properties.

*Engineering note: Thermal stability depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization at lower temperatures than long magnets. The danger warning in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Two magnets (attraction) - forces in the system
MW 4x4 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.36 kg / 5.20 lbs 5 984 Gs	0.35 kg / 0.78 lbs 354 g / 3.5 N	N/A
1 mm	1.34 kg / 2.96 lbs 8 324 Gs	0.20 kg / 0.44 lbs 201 g / 2.0 N	1.21 kg / 2.66 lbs ~0 Gs
2 mm	0.69 kg / 1.52 lbs 5 968 Gs	0.10 kg / 0.23 lbs 103 g / 1.0 N	0.62 kg / 1.37 lbs ~0 Gs
3 mm	0.34 kg / 0.76 lbs 4 213 Gs	0.05 kg / 0.11 lbs 52 g / 0.5 N	0.31 kg / 0.68 lbs ~0 Gs
5 mm	0.09 kg / 0.20 lbs 2 169 Gs	0.01 kg / 0.03 lbs 14 g / 0.1 N	0.08 kg / 0.18 lbs ~0 Gs
10 mm	0.01 kg / 0.01 lbs 592 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
20 mm	0.00 kg / 0.00 lbs 116 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
50 mm	0.00 kg / 0.00 lbs 10 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.00 lbs 6 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
70 mm	0.00 kg / 0.00 lbs 4 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
80 mm	0.00 kg / 0.00 lbs 3 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
90 mm	0.00 kg / 0.00 lbs 2 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
100 mm	0.00 kg / 0.00 lbs 1 Gs	0.00 kg / 0.00 lbs 0 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs

Two magnetic products attract each other from a much further distance than a neodymium and metal combination. The connection of two magnets generates a stronger field and a larger range of performance. Want to build a solid fastener? Utilize two neodymiums instead of a neodymium and a striker plate. Remember that when connecting a pair of magnets, the collision energy is huge. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density between like poles reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
Attention: Figures refer to shear force of dual identical neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Hazards (implants) - precautionary measures
MW 4x4 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.0 cm
Hearing aid	10 Gs (1.0 mT)	2.0 cm
Mechanical watch	20 Gs (2.0 mT)	2.0 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Remote	50 Gs (5.0 mT)	1.5 cm
Payment card	400 Gs (40.0 mT)	0.5 cm
HDD hard drive	600 Gs (60.0 mT)	0.5 cm

A strong magnetic field is a serious hazard to electronics as well as medical implants. These neodymiums produce a flux that disrupts operation of digital equipment. Remember: the unseen radiation passes through tissues and plastic. Increased vigilance must be taken by people with hearing aids and insulin pumps. Influence will be felt by: mechanical watches, car keys, membranes, and displays. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MW 4x4 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	36.95 km/h (10.26 m/s)	0.02 J
30 mm	63.99 km/h (17.78 m/s)	0.06 J
50 mm	82.62 km/h (22.95 m/s)	0.10 J
100 mm	116.84 km/h (32.45 m/s)	0.20 J

Neodymium magnets are delicate – a violent impact against metal risks their cracking. Control the attraction moment – a neodymium left loose becomes dangerous. Striking energy can cause material chips or dangerous crushing to skin. Always hold the magnet during installation so it doesn't hit violently against the steel surface. A collision at high speed means shattering of the magnet. Wear safety glasses when working with large magnets.

Table 9: Anti-corrosion coating durability
MW 4x4 / N38

Technical parameter	Value / Description
Coating type	[NiCuNi] Nickel
Layer structure	Nickel - Copper - Nickel
Layer thickness	10-20 µm
Salt spray test (SST) ?	24 h
Recommended environment	Indoors only (dry)

For outdoor applications, an epoxy coating is required; standard nickel is intended for indoor use. The silver nickel coating also serves an aesthetic function but is not fully waterproof.

Table 10: Construction data (P_c)
MW 4x4 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	717 Mx	7.2 µWb
P_c Coefficient	0.89	High (Stable)

Flux value passing through the magnet pole. Essential parameter for generator designers and motors. The P_c coefficient defines the working geometry.

Table 11: Physics of underwater searching
MW 4x4 / N38

Environment	Effective steel pull	Effect
Air (land)	0.51 kg	Standard
Water (riverbed)	0.58 kg (+0.07 kg buoyancy gain)	+14.5%

Corrosion warning: Remember to wipe the magnet thoroughly after removing it from water and apply a protective layer (e.g., oil) to avoid corrosion.

Water displaces steel, making heavy objects slightly lighter. Buoyancy helps in lifting finds.

1. Sliding resistance

*Warning: On a vertical surface, the magnet retains just a fraction of its perpendicular strength.

2. Plate thickness effect

*Thin metal sheet (e.g. computer case) significantly weakens the holding force.

3. Thermal stability

*For N38 grade, the critical limit is 80°C.

4. Demagnetization curve and operating point (B-H)

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.89

This simulation demonstrates the magnetic stability of the selected magnet under specific geometric conditions. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical and environmental data

Material specification

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Sustainability

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 010076-2026

Magnet Unit Converter

Pulling force

Newtons (N)

Pounds (lbs)

Magnetic Field

Gauss (Gs)

Induction (T)

Insert a value in one of the inputs, and the remaining units will convert on the fly.

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SM 32x500 [2xM8] / N42 - magnetic separator

1488.30 ZŁ brutto / pcs

The presented product is an exceptionally strong cylindrical magnet, manufactured from advanced NdFeB material, which, with dimensions of Ø4x4 mm, guarantees the highest energy density. This specific item boasts a tolerance of ±0.1mm and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.51 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration on a small surface counts. Thanks to the high power of 4.96 N with a weight of only 0.38 g, this rod is indispensable in miniature devices and wherever every gram matters.

Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this precision component. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets N38 are suitable for the majority of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø4x4), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our store.

This model is characterized by dimensions Ø4x4 mm, which, at a weight of 0.38 g, makes it an element with impressive magnetic energy density. The value of 4.96 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.38 g. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 4 mm), which means that the N and S poles are located on the flat, circular surfaces. Thanks to this, the magnet can be easily glued into a hole and achieve a strong field on the front surface. On request, we can also produce versions magnetized diametrically if your project requires it.

Pros as well as cons of neodymium magnets.

Advantages

Apart from their superior holding force, neodymium magnets have these key benefits:

They do not lose power, even after around 10 years – the decrease in power is only ~1% (theoretically),
They possess excellent resistance to magnetism drop due to external magnetic sources,
In other words, due to the shiny finish of silver, the element becomes visually attractive,
Magnets exhibit huge magnetic induction on the active area,
Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
Possibility of detailed forming and modifying to individual applications,
Key role in high-tech industry – they are utilized in mass storage devices, drive modules, medical equipment, also other advanced devices.
Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in small dimensions, which allows their use in miniature devices

Cons

Characteristics of disadvantages of neodymium magnets: application proposals

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also increases their durability
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
We suggest casing - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complex shapes.
Potential hazard to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these devices can be problematic in diagnostics medical after entering the body.
Due to expensive raw materials, their price exceeds standard values,

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

The specified lifting capacity refers to the limit force, measured under ideal test conditions, namely:

with the contact of a sheet made of special test steel, ensuring maximum field concentration
whose transverse dimension equals approx. 10 mm
with a plane perfectly flat
under conditions of ideal adhesion (metal-to-metal)
for force acting at a right angle (pull-off, not shear)
in temp. approx. 20°C

Practical aspects of lifting capacity – factors

Please note that the magnet holding will differ influenced by elements below, starting with the most relevant:

Distance (betwixt the magnet and the metal), since even a tiny clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
Material type – ideal substrate is high-permeability steel. Cast iron may attract less.
Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal factor – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 75%. Moreover, even a small distance between the magnet and the plate lowers the lifting capacity.

Warnings

Threat to navigation

Be aware: neodymium magnets generate a field that confuses precision electronics. Maintain a safe distance from your phone, device, and navigation systems.

Nickel coating and allergies

Some people have a contact allergy to Ni, which is the typical protective layer for NdFeB magnets. Frequent touching can result in a rash. We strongly advise wear protective gloves.

Safe distance

Data protection: Strong magnets can ruin payment cards and delicate electronics (pacemakers, hearing aids, timepieces).

Fire risk

Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Powerful field

Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.

Adults only

Only for adults. Tiny parts can be swallowed, leading to serious injuries. Keep away from children and animals.

Power loss in heat

Keep cool. Neodymium magnets are susceptible to heat. If you need resistance above 80°C, ask us about HT versions (H, SH, UH).

Crushing risk

Big blocks can break fingers in a fraction of a second. Do not put your hand betwixt two strong magnets.

Warning for heart patients

People with a pacemaker have to maintain an absolute distance from magnets. The magnetism can disrupt the operation of the life-saving device.

Protective goggles

NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them cracking into shards.

Caution! Learn more about hazards in the article: Safety of working with magnets.

MW 4x4 / N38 - cylindrical magnet

Product card - MW 4x4 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - report

Table 1: Static pull force (pull vs gap) - power drop MW 4x4 / N38

Table 2: Vertical capacity (wall) MW 4x4 / N38

Table 3: Vertical assembly (sliding) - vertical pull MW 4x4 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 4x4 / N38

Table 5: Thermal resistance (stability) - power drop MW 4x4 / N38

Table 6: Two magnets (attraction) - forces in the system MW 4x4 / N38

Table 7: Hazards (implants) - precautionary measures MW 4x4 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 4x4 / N38

Table 9: Anti-corrosion coating durability MW 4x4 / N38

Table 10: Construction data (Pc) MW 4x4 / N38

Table 11: Physics of underwater searching MW 4x4 / N38

1. Sliding resistance

2. Plate thickness effect

3. Thermal stability

4. Demagnetization curve and operating point (B-H)

Material specification

Sustainability

Pulling force

Magnetic Field

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SM 32x150 [2xM8] / N52 - magnetic separator

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MW 12x1 / N38 - cylindrical magnet

SM 32x500 [2xM8] / N42 - magnetic separator

Pros as well as cons of neodymium magnets.

Advantages

Cons

Pull force analysis

Optimal lifting capacity of a neodymium magnet – what affects it?

Practical aspects of lifting capacity – factors

Warnings

Threat to navigation

Nickel coating and allergies

Safe distance

Fire risk

Powerful field

Adults only

Power loss in heat

Crushing risk

Warning for heart patients

Protective goggles

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 4x4 / N38

Table 2: Vertical capacity (wall)
MW 4x4 / N38

Table 3: Vertical assembly (sliding) - vertical pull
MW 4x4 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 4x4 / N38

Table 5: Thermal resistance (stability) - power drop
MW 4x4 / N38

Table 6: Two magnets (attraction) - forces in the system
MW 4x4 / N38

Table 7: Hazards (implants) - precautionary measures
MW 4x4 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 4x4 / N38

Table 9: Anti-corrosion coating durability
MW 4x4 / N38

Table 10: Construction data (P_c)
MW 4x4 / N38

Table 11: Physics of underwater searching
MW 4x4 / N38