Product available Ships today (order by 14:00)

MW 4x10 / 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 010075

GTIN/EAN: 5906301810742

5.00

Diameter Ø

4 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

0.94 g

Magnetization Direction

↑ axial

Load capacity

0.32 kg / 3.16 N

Magnetic Induction

606.05 mT / 6061 Gs

Coating

[NiCuNi] Nickel

view technical specifications »

0.800 ZŁ with VAT / pcs + price for transport

0.650 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

0.650 ZŁ

0.800 ZŁ

price from 1000 pcs

0.611 ZŁ

0.752 ZŁ

price from 3900 pcs

0.572 ZŁ

0.704 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Need advice?

Call us +48 22 499 98 98 alternatively send us a note using form through our site.
Weight and structure of neodymium magnets can be calculated on our power calculator.

Same-day shipping for orders placed before 14:00.

Detailed specification - MW 4x10 / N38 - cylindrical magnet

Specification / characteristics - MW 4x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010075
GTIN/EAN	5906301810742
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	10 mm [±0,1 mm]
Weight	0.94 g
Magnetization Direction	↑ axial
Load capacity ~ ?	0.32 kg / 3.16 N
Magnetic Induction ~ ?	606.05 mT / 6061 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 4x10 / 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

Engineering analysis of the assembly - data

These data represent the result of a physical simulation. Values were calculated on algorithms for the material Nd₂Fe₁₄B. Real-world conditions may differ from theoretical values. Use these calculations as a preliminary roadmap during assembly planning.

Table 1: Static pull force (force vs distance) - characteristics
MW 4x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	6049 Gs 604.9 mT	0.32 kg / 0.71 LBS 320.0 g / 3.1 N	low risk
1 mm	3327 Gs 332.7 mT	0.10 kg / 0.21 LBS 96.8 g / 0.9 N	low risk
2 mm	1732 Gs 173.2 mT	0.03 kg / 0.06 LBS 26.2 g / 0.3 N	low risk
3 mm	969 Gs 96.9 mT	0.01 kg / 0.02 LBS 8.2 g / 0.1 N	low risk
5 mm	389 Gs 38.9 mT	0.00 kg / 0.00 LBS 1.3 g / 0.0 N	low risk
10 mm	90 Gs 9.0 mT	0.00 kg / 0.00 LBS 0.1 g / 0.0 N	low risk
15 mm	35 Gs 3.5 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
20 mm	17 Gs 1.7 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
30 mm	6 Gs 0.6 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk
50 mm	2 Gs 0.2 mT	0.00 kg / 0.00 LBS 0.0 g / 0.0 N	low risk

Pulling power weakens significantly with every subsequent millimeter of gap. Note that every additional insulation layer (e.g., dirt, varnish, dust) significantly reduces the pull force. Neodymiums hold most effectively during direct contact; distance nullifies the power. Notice how rapidly the load capacity fall, when the product does not adhere directly to the metal substrate. When designing the assembly, avoid unnecessary gaps.

Table 2: Vertical capacity (wall)
MW 4x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.06 kg / 0.14 LBS 64.0 g / 0.6 N
1 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 20.0 g / 0.2 N
2 mm	Stal (~0.2)	0.01 kg / 0.01 LBS 6.0 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 shear load sufficient to cause the sliding of the magnet downwards against a vertical steel wall (considering standard friction). This value is relative to the separation distance between the magnet and the surface.

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 4x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.10 kg / 0.21 LBS 96.0 g / 0.9 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.06 kg / 0.14 LBS 64.0 g / 0.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.03 kg / 0.07 LBS 32.0 g / 0.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.16 kg / 0.35 LBS 160.0 g / 1.6 N

When mounting a magnet on a upright wall (e.g., a car body), it you can count on only about 20%-30% of nominal attraction strength. Gravity as well as a low friction coefficient influence the fact that magnets slide down faster than they pop off the substrate. Planning a wall mount? Remember that the shear force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a noticeably lighter cargo. Using a rubber layer can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 4x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.03 kg / 0.07 LBS 32.0 g / 0.3 N
1 mm	25%	0.08 kg / 0.18 LBS 80.0 g / 0.8 N
2 mm	50%	0.16 kg / 0.35 LBS 160.0 g / 1.6 N
3 mm	75%	0.24 kg / 0.53 LBS 240.0 g / 2.4 N
5 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
10 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
11 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N
12 mm	100%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N

A thin sheet is not enough to focus the entire magnetic field, which weakens actual performance of the magnet. Should you attach a powerful product to a too thin substrate, the flux will pass right through and the attraction force will be weaker. To utilize full efficiency of this magnet's power, you require a sufficiently solid piece of metal. The material oversaturation causes that on delicate walls (e.g., car bodies), the product holds weaker. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal stability (material behavior) - resistance threshold
MW 4x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	0.32 kg / 0.71 LBS 320.0 g / 3.1 N	OK
40 °C	-2.2%	0.31 kg / 0.69 LBS 313.0 g / 3.1 N	OK
60 °C	-4.4%	0.31 kg / 0.67 LBS 305.9 g / 3.0 N	OK
80 °C	-6.6%	0.30 kg / 0.66 LBS 298.9 g / 2.9 N
100 °C	-28.8%	0.23 kg / 0.50 LBS 227.8 g / 2.2 N

Ordinary NdFeB products irreversibly lose parameters past the thermal threshold. Watch out for overheating – excessive heat can permanently demagnetize this magnet. With every degree above norm, the magnet's force temporarily lowers. Refrain from using this product near heat sources higher than its working range. Too high temperature will cause destruction of magnetism.

*Engineering note: Heat tolerance is determined by both grade, as well as the dimension ratios. Thin magnets (pancake types) are more susceptible to demagnetization under lower heat stress than long magnets. Warning indicator in the table signals permanent field degradation for this specific geometry.

Table 6: Two magnets (repulsion) - field collision
MW 4x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.83 kg / 6.25 LBS 6 138 Gs	0.43 kg / 0.94 LBS 425 g / 4.2 N	N/A
1 mm	1.63 kg / 3.59 LBS 9 174 Gs	0.24 kg / 0.54 LBS 244 g / 2.4 N	1.47 kg / 3.23 LBS ~0 Gs
2 mm	0.86 kg / 1.89 LBS 6 655 Gs	0.13 kg / 0.28 LBS 129 g / 1.3 N	0.77 kg / 1.70 LBS ~0 Gs
3 mm	0.44 kg / 0.97 LBS 4 777 Gs	0.07 kg / 0.15 LBS 66 g / 0.7 N	0.40 kg / 0.88 LBS ~0 Gs
5 mm	0.13 kg / 0.28 LBS 2 561 Gs	0.02 kg / 0.04 LBS 19 g / 0.2 N	0.11 kg / 0.25 LBS ~0 Gs
10 mm	0.01 kg / 0.03 LBS 778 Gs	0.00 kg / 0.00 LBS 2 g / 0.0 N	0.01 kg / 0.02 LBS ~0 Gs
20 mm	0.00 kg / 0.00 LBS 179 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 19 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 12 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 8 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 6 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 4 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 3 Gs	0.00 kg / 0.00 LBS 0 g / 0.0 N	0.00 kg / 0.00 LBS ~0 Gs

Two strong neodymiums interact from a much further distance than a neodymium and metal setup. The setup of magnet-to-magnet generates a stronger field and a further horizon of operation. Planning to create a powerful holder? Utilize two neodymiums instead of a neodymium and a steel. Exercise caution that when bringing together two magnets, the collision energy is huge. The repulsion force is marginally weaker than the attraction, but still impressive.
*Flux density between like poles reaches ~0 Gs at the midpoint between the magnets (resulting from vector opposition).
* Estimates apply to friction force of a pair of same magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (electronics) - precautionary measures
MW 4x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	3.5 cm
Hearing aid	10 Gs (1.0 mT)	2.5 cm
Timepiece	20 Gs (2.0 mT)	2.0 cm
Mobile device	40 Gs (4.0 mT)	1.5 cm
Car key	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

Powerful magnet radiation is a real danger to IT equipment as well as medical implants. These neodymiums produce a field that prevents correct functioning of digital equipment. Notice: the unseen radiation passes through tissues and glass. Increased vigilance must be exercised by people with cochlear implants and insulin pumps. The risk also applies to: automatic timepieces, remotes, membranes, and screens. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 4x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	18.61 km/h (5.17 m/s)	0.01 J
30 mm	32.23 km/h (8.95 m/s)	0.04 J
50 mm	41.61 km/h (11.56 m/s)	0.06 J
100 mm	58.84 km/h (16.35 m/s)	0.13 J

NdFeB products are prone to chipping – a strong collision with metal causes immediate chipping. Pay attention to connection velocity – a neodymium left loose becomes dangerous. Kinetic force can trigger coating fragments or injury to fingers. Be sure to control the product during installation so it doesn't slam with momentum against the metal. A contact at a velocity of dozens of km/h means shattering of the magnet. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
MW 4x10 / 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)

The SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Electrical data (P_c)
MW 4x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	864 Mx	8.6 µWb
P_c Coefficient	1.31	High (Stable)

Flux value passing through the magnet pole. Key data when building generators as well as sensors. P_c value determines the working geometry.

Table 11: Physics of underwater searching
MW 4x10 / N38

Environment	Effective steel pull	Effect
Air (land)	0.32 kg	Standard
Water (riverbed)	0.37 kg (+0.05 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.

In water, the magnet feels stronger thanks to Archimedes' principle. Buoyancy helps in lifting finds.

1. Wall mount (shear)

*Note: On a vertical wall, the magnet retains only approx. 20-30% of its perpendicular strength.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) severely reduces the holding force.

3. Heat tolerance

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 1.31

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.

Engineering data and GPSR

Elemental analysis

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%

Environmental data

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: 010075-2026

Quick Unit Converter

Magnet pull force

Pounds (lbs)

Field Strength

Gauss (Gs)

Put a figure in a single slot to see the conversion for all other units immediately.

Check out more offers

Product available Ships today (order by 14:00)

UMS 20x8.6x4.5x7 / N38 - conical magnetic holder

6.46 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 18x275 [2xM5] / N42 - magnetic separator

608.85 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 45x25 / N38 - cylindrical magnet

101.55 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 32x225 [2xM8] / N52 - magnetic separator

676.50 ZŁ brutto / pcs

This product is an incredibly powerful rod magnet, produced from durable NdFeB material, which, at dimensions of Ø4x10 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.32 kg), this product is in stock 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, ensuring an aesthetic appearance and durability for years.

It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the pull force of 3.16 N with a weight of only 0.94 g, this rod is indispensable in miniature devices and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in industry, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger magnets in the same volume (Ø4x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.

This model is characterized by dimensions Ø4x10 mm, which, at a weight of 0.94 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 0.32 kg (force ~3.16 N), which, with such defined dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 4 mm. 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 through the diameter if your project requires it.

Pros as well as cons of rare earth magnets.

Strengths

Besides their exceptional strength, neodymium magnets offer the following advantages:

They retain attractive force for nearly 10 years – the loss is just ~1% (in theory),
They feature excellent resistance to weakening of magnetic properties when exposed to external magnetic sources,
The use of an metallic finish of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
Magnets possess exceptionally strong magnetic induction on the working surface,
Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
Thanks to freedom in shaping and the ability to customize to specific needs,
Significant place in modern technologies – they are commonly used in computer drives, electromotive mechanisms, medical equipment, as well as complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in compact constructions

Limitations

What to avoid - cons of neodymium magnets: application proposals

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only protects the magnet but also increases its resistance to damage
We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Due to limitations in creating nuts and complex shapes in magnets, we propose using a housing - magnetic mount.
Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child health protection. It is also worth noting that small components of these products can be problematic in diagnostics medical when they are in the body.
Due to expensive raw materials, their price exceeds standard values,

Lifting parameters

Maximum lifting capacity of the magnet – what contributes to it?

The declared magnet strength refers to the maximum value, measured under ideal test conditions, meaning:

on a block made of mild steel, optimally conducting the magnetic flux
possessing a massiveness of min. 10 mm to ensure full flux closure
with a surface free of scratches
under conditions of no distance (surface-to-surface)
for force acting at a right angle (in the magnet axis)
in neutral thermal conditions

What influences lifting capacity in practice

In real-world applications, the actual holding force depends on several key aspects, ranked from crucial:

Air gap (between the magnet and the metal), because even a very small distance (e.g. 0.5 mm) results in a drastic drop in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
Angle of force application – maximum parameter is reached only during pulling at a 90° angle. The force required to slide of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
Material type – ideal substrate is pure iron steel. Hardened steels may attract less.
Surface condition – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was assessed by applying a steel plate with a smooth surface of suitable thickness (min. 20 mm), under vertically applied force, whereas under shearing force the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the holding force.

H&S for magnets

Heat warning

Do not overheat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, look for HT versions (H, SH, UH).

Danger to pacemakers

For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or ask another person to work with the magnets.

Shattering risk

Neodymium magnets are ceramic materials, which means they are fragile like glass. Impact of two magnets will cause them cracking into shards.

Phone sensors

Be aware: neodymium magnets generate a field that disrupts sensitive sensors. Maintain a separation from your phone, device, and navigation systems.

Dust explosion hazard

Dust produced during machining of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

Swallowing risk

Only for adults. Tiny parts pose a choking risk, leading to severe trauma. Store out of reach of children and animals.

Finger safety

Watch your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing everything in their path. Be careful!

Electronic devices

Very strong magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.

Handling rules

Use magnets consciously. Their huge power can shock even experienced users. Be vigilant and respect their power.

Nickel coating and allergies

It is widely known that the nickel plating (standard magnet coating) is a strong allergen. If your skin reacts to metals, avoid direct skin contact and select encased magnets.

Important! Need more info? Read our article: Why are neodymium magnets dangerous?

MW 4x10 / N38 - cylindrical magnet

Detailed specification - MW 4x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Engineering analysis of the assembly - data

Table 1: Static pull force (force vs distance) - characteristics MW 4x10 / N38

Table 2: Vertical capacity (wall) MW 4x10 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces MW 4x10 / N38

Table 4: Material efficiency (saturation) - power losses MW 4x10 / N38

Table 5: Thermal stability (material behavior) - resistance threshold MW 4x10 / N38

Table 6: Two magnets (repulsion) - field collision MW 4x10 / N38

Table 7: Hazards (electronics) - precautionary measures MW 4x10 / N38

Table 8: Collisions (kinetic energy) - warning MW 4x10 / N38

Table 9: Corrosion resistance MW 4x10 / N38

Table 10: Electrical data (Pc) MW 4x10 / N38

Table 11: Physics of underwater searching MW 4x10 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Heat tolerance

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

Elemental analysis

Environmental data

Magnet pull force

Field Strength

Check out more offers

UMS 20x8.6x4.5x7 / N38 - conical magnetic holder

SM 18x275 [2xM5] / N42 - magnetic separator

MW 45x25 / N38 - cylindrical magnet

SM 32x225 [2xM8] / N52 - magnetic separator

Pros as well as cons of rare earth magnets.

Strengths

Limitations

Lifting parameters

Maximum lifting capacity of the magnet – what contributes to it?

What influences lifting capacity in practice

H&S for magnets

Heat warning

Danger to pacemakers

Shattering risk

Phone sensors

Dust explosion hazard

Swallowing risk

Finger safety

Electronic devices

Handling rules

Nickel coating and allergies

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - characteristics
MW 4x10 / N38

Table 2: Vertical capacity (wall)
MW 4x10 / N38

Table 3: Wall mounting (sliding) - behavior on slippery surfaces
MW 4x10 / N38

Table 4: Material efficiency (saturation) - power losses
MW 4x10 / N38

Table 5: Thermal stability (material behavior) - resistance threshold
MW 4x10 / N38

Table 6: Two magnets (repulsion) - field collision
MW 4x10 / N38

Table 7: Hazards (electronics) - precautionary measures
MW 4x10 / N38

Table 8: Collisions (kinetic energy) - warning
MW 4x10 / N38

Table 9: Corrosion resistance
MW 4x10 / N38

Table 10: Electrical data (P_c)
MW 4x10 / N38

Table 11: Physics of underwater searching
MW 4x10 / N38