Product available Ships today (order by 14:00)

MW 29x10 / 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: 1-6500
Rating: 5

cylindrical magnet

Catalog no 010053

GTIN/EAN: 5906301810520

5.00

Diameter Ø

29 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

49.54 g

Magnetization Direction

↑ axial

Load capacity

20.82 kg / 204.22 N

Magnetic Induction

351.88 mT / 3519 Gs

Coating

[NiCuNi] Nickel

17.34 ZŁ with VAT / pcs + price for transport

14.10 ZŁ net + 23% VAT / pcs

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MW 29x10 / N38 - cylindrical magnet

Specification / characteristics MW 29x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010053
GTIN/EAN	5906301810520
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	29 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	49.54 g
Magnetization Direction	↑ axial
Load capacity ~ ?	20.82 kg / 204.22 N
Magnetic Induction ~ ?	351.88 mT / 3519 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 29x10 / 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 information represent the direct effect of a mathematical simulation. Values rely on models for the material Nd₂Fe₁₄B. Operational performance might slightly differ from theoretical values. Please consider these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - interaction chart
MW 29x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg)	Risk Status
0 mm	3518 Gs 351.8 mT	20.82 kg / 20820.0 g 204.2 N	crushing
1 mm	3321 Gs 332.1 mT	18.55 kg / 18548.8 g 182.0 N	crushing
2 mm	3106 Gs 310.6 mT	16.23 kg / 16226.1 g 159.2 N	crushing
3 mm	2883 Gs 288.3 mT	13.98 kg / 13978.2 g 137.1 N	crushing
5 mm	2437 Gs 243.7 mT	9.99 kg / 9987.1 g 98.0 N	warning
10 mm	1500 Gs 150.0 mT	3.78 kg / 3783.1 g 37.1 N	warning
15 mm	905 Gs 90.5 mT	1.38 kg / 1379.2 g 13.5 N	low risk
20 mm	563 Gs 56.3 mT	0.53 kg / 532.4 g 5.2 N	low risk
30 mm	247 Gs 24.7 mT	0.10 kg / 102.4 g 1.0 N	low risk
50 mm	72 Gs 7.2 mT	0.01 kg / 8.7 g 0.1 N	low risk

Pulling power drops sharply per each millimeter of spacing. Keep in mind that even a very thin break (e.g., dirt, paint, veneer) significantly reduces the pull force. Magnetic products operate optimally at the point of direct contact; gap kills the force. See how quickly the load capacity fall, when the magnet does not adhere tightly to the metal substrate. When designing the assembly, eliminate unnecessary gaps.

Table 2: Shear capacity (wall)
MW 29x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg)
0 mm	Stal (~0.2)	4.16 kg / 4164.0 g 40.8 N
1 mm	Stal (~0.2)	3.71 kg / 3710.0 g 36.4 N
2 mm	Stal (~0.2)	3.25 kg / 3246.0 g 31.8 N
3 mm	Stal (~0.2)	2.80 kg / 2796.0 g 27.4 N
5 mm	Stal (~0.2)	2.00 kg / 1998.0 g 19.6 N
10 mm	Stal (~0.2)	0.76 kg / 756.0 g 7.4 N
15 mm	Stal (~0.2)	0.28 kg / 276.0 g 2.7 N
20 mm	Stal (~0.2)	0.11 kg / 106.0 g 1.0 N
30 mm	Stal (~0.2)	0.02 kg / 20.0 g 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 2.0 g 0.0 N

The following data defines the theoretical force required to start the sliding of the magnet vertically against a vertical steel plate (considering standard friction coefficient). The holding force is relative to the separation distance between the magnet and the surface.

Table 3: Vertical assembly (sliding) - vertical pull
MW 29x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.25 kg / 6246.0 g 61.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.16 kg / 4164.0 g 40.8 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.08 kg / 2082.0 g 20.4 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.41 kg / 10410.0 g 102.1 N

When mounting a holder on a upright plane (e.g., a car body), it will only hold only about 1/5 of its nominal power. Gravitational force and a weak degree of grip mean that magnets move down faster than they pop off the substrate. Designing a wall mount? Note that the sliding force is much weaker than the perpendicular breakaway force. On a slippery surface, the holder will slide down under a much lighter load. Using a rubber coating can effectively improve the result.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 29x10 / N38

Steel thickness (mm)	% power	Real pull force (kg)
0.5 mm	5%	1.04 kg / 1041.0 g 10.2 N
1 mm	13%	2.60 kg / 2602.5 g 25.5 N
2 mm	25%	5.21 kg / 5205.0 g 51.1 N
5 mm	63%	13.01 kg / 13012.5 g 127.7 N
10 mm	100%	20.82 kg / 20820.0 g 204.2 N

A thin metal plate is not enough to absorb the entire magnetic field, which squanders power of the magnet. Should you install a neodymium to a too thin substrate, the field will pass right through and the pull force will drop sharply. To achieve 100% of this neodymium's power, you require a sufficiently solid element of metal. The saturation phenomenon means that on delicate walls (e.g., appliance housings), the holder holds weaker. We suggest choosing the steel cross-section from these parameters.

Table 5: Thermal stability (material behavior) - resistance threshold
MW 29x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull	Status
20 °C	0.0%	20.82 kg / 20820.0 g 204.2 N	OK
40 °C	-2.2%	20.36 kg / 20362.0 g 199.8 N	OK
60 °C	-4.4%	19.90 kg / 19903.9 g 195.3 N
80 °C	-6.6%	19.45 kg / 19445.9 g 190.8 N
100 °C	-28.8%	14.82 kg / 14823.8 g 145.4 N

Classic neodymiums irreversibly lose parameters past the thermal threshold. Watch out for overheating – excessive heat can permanently damage this product. As the temperature rises, the magnet's capacity temporarily lowers. Avoid using this magnet close to ovens exceeding its operating temperature limit. Ignoring the limit will cause irreversible degradation of magnetic properties.

*Important note: Heat tolerance is determined by both grade, but also on the magnet's shape. Low-profile magnets (low permeance coefficient) are more susceptible to demagnetization under lower heat stress compared to rod magnets. Warning indicator in the table indicates a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 29x10 / N38

Gap (mm)	Attraction (kg) (N-S)	Repulsion (kg) (N-N)
0 mm	50.40 kg / 50399 g 494.4 N 5 016 Gs	N/A
1 mm	47.70 kg / 47704 g 468.0 N 6 845 Gs	42.93 kg / 42934 g 421.2 N ~0 Gs
2 mm	44.90 kg / 44901 g 440.5 N 6 641 Gs	40.41 kg / 40411 g 396.4 N ~0 Gs
3 mm	42.08 kg / 42082 g 412.8 N 6 429 Gs	37.87 kg / 37874 g 371.5 N ~0 Gs
5 mm	36.52 kg / 36522 g 358.3 N 5 990 Gs	32.87 kg / 32870 g 322.5 N ~0 Gs
10 mm	24.18 kg / 24176 g 237.2 N 4 873 Gs	21.76 kg / 21758 g 213.4 N ~0 Gs
20 mm	9.16 kg / 9158 g 89.8 N 2 999 Gs	8.24 kg / 8242 g 80.9 N ~0 Gs
50 mm	0.54 kg / 542 g 5.3 N 729 Gs	0.49 kg / 487 g 4.8 N ~0 Gs

Two strong neodymiums interact from a significantly greater distance than a neodymium and metal combination. The connection of two magnets generates a stronger field and a wider radius of performance. Want to build a powerful holder? Apply two magnets instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the collision energy is extreme. The levitation is a bit weaker than the connection force, but still impressive.
*Flux density in repulsion mode is approximately ~0 Gs in the exact middle between the magnets (resulting from vector opposition).

Table 7: Protective zones (electronics) - precautionary measures
MW 29x10 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	13.5 cm
Hearing aid	10 Gs (1.0 mT)	10.5 cm
Mechanical watch	20 Gs (2.0 mT)	8.5 cm
Mobile device	40 Gs (4.0 mT)	6.5 cm
Car key	50 Gs (5.0 mT)	6.0 cm
Payment card	400 Gs (40.0 mT)	2.5 cm
HDD hard drive	600 Gs (60.0 mT)	2.0 cm

Powerful magnet radiation is a large risk to IT equipment as well as pacemakers. These neodymiums produce a field that prevents correct functioning of sensitive medical devices. Notice: the invisible magnetic field acts through matter and plastic. Special caution must be taken by people with cochlear implants and insulin pumps. Also at risk are: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (kinetic energy) - warning
MW 29x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.90 km/h (6.36 m/s)	1.00 J
30 mm	35.92 km/h (9.98 m/s)	2.47 J
50 mm	46.24 km/h (12.85 m/s)	4.09 J
100 mm	65.38 km/h (18.16 m/s)	8.17 J

Magnetic elements are very brittle – a collision with steel can result in shattering. Control the attraction moment – a magnet released freely becomes dangerous. Striking energy can destroy the magnet or painful pinches to skin. Always hold the magnet during mounting so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h means shattering of the neodymium. Wear eye protection when working with large magnets.

Table 9: Corrosion resistance
MW 29x10 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Electrical data (Flux)
MW 29x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	24 471 Mx	244.7 µWb
P_c Coefficient	0.45	Low (Flat)

Flux value passing through the pole surface. Key data in coil applications and motors. P_c value determines the magnet's operating point.

Table 11: Submerged application
MW 29x10 / N38

Environment	Effective steel pull	Effect
Air (land)	20.82 kg	Standard
Water (riverbed)	23.84 kg (+3.02 kg Buoyancy gain)	+14.5%

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

Contrary to myths, water does not block the magnetic field. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

*Note: On a vertical wall, the magnet holds merely a fraction of its perpendicular strength.

2. Steel saturation

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

3. Thermal stability

*For N38 material, 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) = 0.45

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. 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%

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: 010053-2025

Magnet Unit Converter

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Simply complete one field, to let the tool calculate everything else instantly.

Other offers

Product available Ships today (order by 14:00)

MW 80x30 / N38 - cylindrical magnet

415.00 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MPL 40x20x5 / N38 - lamellar magnet

12.24 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

MW 14x10 / N38 - cylindrical magnet

6.84 ZŁ brutto / pcs

Product available Ships today (order by 14:00)

SM 25x200 [2xM8] / N42 - magnetic separator

541.20 ZŁ brutto / pcs

The offered product is a very strong cylinder magnet, composed of advanced NdFeB material, which, at dimensions of Ø29x10 mm, guarantees the highest energy density. The MW 29x10 / N38 model boasts high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 20.82 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Additionally, its Ni-Cu-Ni coating secures it against corrosion in typical 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 204.22 N with a weight of only 49.54 g, this rod is indispensable in electronics 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 long-term durability in automation, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing durability of the connection.

Grade N38 is the most frequently chosen standard for professional neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø29x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø29x10 mm, which, at a weight of 49.54 g, makes it an element with high magnetic energy density. The key parameter here is the holding force amounting to approximately 20.82 kg (force ~204.22 N), which, with such defined dimensions, proves the high grade of the NdFeB material. The product has a [NiCuNi] coating, which secures it against external factors, 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 29 mm. Such an arrangement is standard when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

Besides their exceptional field intensity, neodymium magnets offer the following advantages:

They virtually do not lose power, because even after ten years the decline in efficiency is only ~1% (in laboratory conditions),
They feature excellent resistance to weakening of magnetic properties as a result of opposing magnetic fields,
Thanks to the metallic finish, the surface of Ni-Cu-Ni, gold-plated, or silver gives an modern appearance,
Magnetic induction on the surface of the magnet remains exceptional,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
Thanks to flexibility in forming and the capacity to adapt to client solutions,
Key role in advanced technology sectors – they are utilized in hard drives, electric drive systems, advanced medical instruments, and modern systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Limitations

Disadvantages of NdFeB magnets:

At strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
Neodymium magnets decrease their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. 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 advise using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
Limited possibility of making threads in the magnet and complex forms - preferred is a housing - magnet mounting.
Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small elements of these devices are able to disrupt the diagnostic process medical after entering the body.
With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

The force parameter is a measurement result executed under standard conditions:

with the application of a yoke made of low-carbon steel, ensuring maximum field concentration
with a thickness of at least 10 mm
with an polished touching surface
under conditions of ideal adhesion (surface-to-surface)
during detachment in a direction perpendicular to the plane
at ambient temperature room level

Lifting capacity in real conditions – factors

Effective lifting capacity is influenced by specific conditions, such as (from priority):

Distance (betwixt the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to paint, rust or dirt).
Loading method – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Plate material – mild steel gives the best results. Alloy admixtures lower magnetic permeability and holding force.
Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).

Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under parallel forces the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate decreases the holding force.

Warnings

Mechanical processing

Fire warning: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.

Avoid contact if allergic

Warning for allergy sufferers: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, cease working with magnets and use protective gear.

Impact on smartphones

Note: rare earth magnets generate a field that disrupts sensitive sensors. Maintain a safe distance from your phone, tablet, and navigation systems.

Serious injuries

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

Heat warning

Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. This process is irreversible.

ICD Warning

Individuals with a heart stimulator should keep an safe separation from magnets. The magnetic field can interfere with the functioning of the life-saving device.

Magnetic media

Very strong magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

Choking Hazard

Neodymium magnets are not intended for children. Swallowing a few magnets may result in them pinching intestinal walls, which constitutes a critical condition and necessitates immediate surgery.

Immense force

Use magnets consciously. Their immense force can shock even experienced users. Be vigilant and do not underestimate their force.

Eye protection

Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.

Danger! Need more info? Read our article: Are neodymium magnets dangerous?

MW 29x10 / N38 - cylindrical magnet

Want to talk magnets?

MW 29x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the product - report

1. Sliding resistance

2. Steel saturation

3. Thermal stability

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

Elemental analysis

Sustainability

Pulling force

Magnetic Induction

Other offers

MW 80x30 / N38 - cylindrical magnet

MPL 40x20x5 / N38 - lamellar magnet

MW 14x10 / N38 - cylindrical magnet

SM 25x200 [2xM8] / N42 - magnetic separator

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Limitations

Pull force analysis

Maximum lifting force for a neodymium magnet – what contributes to it?

Lifting capacity in real conditions – factors

Mechanical processing

Avoid contact if allergic

Impact on smartphones

Serious injuries

Heat warning

ICD Warning

Magnetic media

Choking Hazard

Immense force

Eye protection

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.