Product available Ships tomorrow

MW 70x20 / N38 - cylindrical magnet

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

cylindrical magnet

Catalog no 010095

GTIN/EAN: 5906301810940

5.00

Diameter Ø

70 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

577.27 g

Magnetization Direction

↑ axial

Load capacity

99.83 kg / 979.00 N

Magnetic Induction

307.57 mT / 3076 Gs

Coating

[NiCuNi] Nickel

check technical specifications »

239.85 ZŁ with VAT / pcs + price for transport

195.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs

195.00 ZŁ

239.85 ZŁ

price from 5 pcs

183.30 ZŁ

225.46 ZŁ

price from 15 pcs

171.60 ZŁ

211.07 ZŁ

Carbon Footprint – environmental impact GPSR Regulation – product safety

Can't decide what to choose?

Call us now +48 22 499 98 98 alternatively contact us using inquiry form our website.
Parameters along with appearance of a magnet can be estimated using our power calculator.

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

Product card - MW 70x20 / N38 - cylindrical magnet

Specification / characteristics - MW 70x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010095
GTIN/EAN	5906301810940
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	70 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	577.27 g
Magnetization Direction	↑ axial
Load capacity ~ ?	99.83 kg / 979.00 N
Magnetic Induction ~ ?	307.57 mT / 3076 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 70x20 / 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 analysis of the product - data

These values are the outcome of a engineering calculation. Values were calculated on models for the class Nd₂Fe₁₄B. Operational performance may deviate from the simulation results. Use these calculations as a reference point when designing systems.

Table 1: Static pull force (force vs gap) - interaction chart
MW 70x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3075 Gs 307.5 mT	99.83 kg / 220.09 pounds 99830.0 g / 979.3 N	crushing
1 mm	3013 Gs 301.3 mT	95.80 kg / 211.21 pounds 95804.4 g / 939.8 N	crushing
2 mm	2946 Gs 294.6 mT	91.59 kg / 201.92 pounds 91587.7 g / 898.5 N	crushing
3 mm	2875 Gs 287.5 mT	87.27 kg / 192.39 pounds 87266.0 g / 856.1 N	crushing
5 mm	2727 Gs 272.7 mT	78.48 kg / 173.02 pounds 78482.2 g / 769.9 N	crushing
10 mm	2332 Gs 233.2 mT	57.38 kg / 126.50 pounds 57380.6 g / 562.9 N	crushing
15 mm	1942 Gs 194.2 mT	39.80 kg / 87.73 pounds 39795.7 g / 390.4 N	crushing
20 mm	1590 Gs 159.0 mT	26.68 kg / 58.82 pounds 26680.3 g / 261.7 N	crushing
30 mm	1044 Gs 104.4 mT	11.51 kg / 25.38 pounds 11511.2 g / 112.9 N	crushing
50 mm	466 Gs 46.6 mT	2.29 kg / 5.06 pounds 2294.1 g / 22.5 N	warning

Grip strength decreases drastically with every mm of spacing. Remember that even a very thin break (e.g., dirt, varnish, dust) strongly diminishes the holding power. Neodymiums work strongest at the point of direct contact; distance kills the power. Notice how flashily the parameters drop, when the product does not adhere tightly to the steel surface. When planning the mounting, eliminate unnecessary gaps.

Table 2: Shear hold (wall)
MW 70x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	19.97 kg / 44.02 pounds 19966.0 g / 195.9 N
1 mm	Stal (~0.2)	19.16 kg / 42.24 pounds 19160.0 g / 188.0 N
2 mm	Stal (~0.2)	18.32 kg / 40.38 pounds 18318.0 g / 179.7 N
3 mm	Stal (~0.2)	17.45 kg / 38.48 pounds 17454.0 g / 171.2 N
5 mm	Stal (~0.2)	15.70 kg / 34.60 pounds 15696.0 g / 154.0 N
10 mm	Stal (~0.2)	11.48 kg / 25.30 pounds 11476.0 g / 112.6 N
15 mm	Stal (~0.2)	7.96 kg / 17.55 pounds 7960.0 g / 78.1 N
20 mm	Stal (~0.2)	5.34 kg / 11.76 pounds 5336.0 g / 52.3 N
30 mm	Stal (~0.2)	2.30 kg / 5.08 pounds 2302.0 g / 22.6 N
50 mm	Stal (~0.2)	0.46 kg / 1.01 pounds 458.0 g / 4.5 N

The table below indicates the theoretical weight limit necessary to initiate the downward movement of the magnet downwards on a upright steel wall (assuming typical friction coefficient). This parameter is relative to the distance between the magnet and the metal.

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 70x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	29.95 kg / 66.03 pounds 29949.0 g / 293.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	19.97 kg / 44.02 pounds 19966.0 g / 195.9 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	9.98 kg / 22.01 pounds 9983.0 g / 97.9 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	49.92 kg / 110.04 pounds 49915.0 g / 489.7 N

When hanging a element on a vertical wall (e.g., a fridge), it will maintain only about 20%-30% of its nominal power. Gravity and a low friction coefficient cause that holders slip easier than they detach. Want to create a wall mount? Consider that the sliding force is noticeably lower than the perpendicular breakaway force. On a smooth steel, the element will give way down under a much lighter load. Using a rubber pad can drastically increase the grip.

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 70x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	3.33 kg / 7.34 pounds 3327.7 g / 32.6 N
1 mm	8%	8.32 kg / 18.34 pounds 8319.2 g / 81.6 N
2 mm	17%	16.64 kg / 36.68 pounds 16638.3 g / 163.2 N
3 mm	25%	24.96 kg / 55.02 pounds 24957.5 g / 244.8 N
5 mm	42%	41.60 kg / 91.70 pounds 41595.8 g / 408.1 N
10 mm	83%	83.19 kg / 183.41 pounds 83191.7 g / 816.1 N
11 mm	92%	91.51 kg / 201.75 pounds 91510.8 g / 897.7 N
12 mm	100%	99.83 kg / 220.09 pounds 99830.0 g / 979.3 N

A thin sheet is incapable of conduct the full magnetic flux, which squanders power of the holder. Should you mount a strong magnet to a weak sheet, the magnetism will pass right through and the pull force will drop sharply. To achieve full efficiency of this magnet's power, you require a sufficiently solid element of steel. The material oversaturation causes that on thin elements (e.g., appliance housings), the product holds weaker. We advise picking the steel thickness from these parameters.

Table 5: Thermal stability (stability) - power drop
MW 70x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	99.83 kg / 220.09 pounds 99830.0 g / 979.3 N	OK
40 °C	-2.2%	97.63 kg / 215.25 pounds 97633.7 g / 957.8 N	OK
60 °C	-4.4%	95.44 kg / 210.40 pounds 95437.5 g / 936.2 N
80 °C	-6.6%	93.24 kg / 205.56 pounds 93241.2 g / 914.7 N
100 °C	-28.8%	71.08 kg / 156.70 pounds 71079.0 g / 697.3 N

Classic neodymiums lose strength after exceeding the maximum temperature. Avoid high temperatures – excessive heat can irreversibly demagnetize this product. With increasing heat, the neodymium's capacity temporarily drops. Avoid using this product close to ovens higher than its operating temperature limit. Too high temperature will lead to irreversible degradation of magnetism.

*Technical advisory: Heat tolerance depends not only on the material grade, and the Permeance Coefficient Pc. Low-profile magnets (low Pc) are more susceptible to demagnetization sooner than long magnets. Warning indicator in the table indicates a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 70x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	224.41 kg / 494.73 pounds 4 665 Gs	33.66 kg / 74.21 pounds 33661 g / 330.2 N	N/A
1 mm	219.98 kg / 484.97 pounds 6 090 Gs	33.00 kg / 72.74 pounds 32997 g / 323.7 N	197.98 kg / 436.47 pounds ~0 Gs
2 mm	215.36 kg / 474.78 pounds 6 026 Gs	32.30 kg / 71.22 pounds 32304 g / 316.9 N	193.82 kg / 427.31 pounds ~0 Gs
3 mm	210.66 kg / 464.41 pounds 5 959 Gs	31.60 kg / 69.66 pounds 31598 g / 310.0 N	189.59 kg / 417.97 pounds ~0 Gs
5 mm	201.05 kg / 443.23 pounds 5 822 Gs	30.16 kg / 66.48 pounds 30157 g / 295.8 N	180.94 kg / 398.91 pounds ~0 Gs
10 mm	176.42 kg / 388.94 pounds 5 454 Gs	26.46 kg / 58.34 pounds 26463 g / 259.6 N	158.78 kg / 350.05 pounds ~0 Gs
20 mm	128.99 kg / 284.36 pounds 4 663 Gs	19.35 kg / 42.65 pounds 19348 g / 189.8 N	116.09 kg / 255.93 pounds ~0 Gs
50 mm	39.50 kg / 87.08 pounds 2 581 Gs	5.93 kg / 13.06 pounds 5925 g / 58.1 N	35.55 kg / 78.38 pounds ~0 Gs
60 mm	25.88 kg / 57.05 pounds 2 089 Gs	3.88 kg / 8.56 pounds 3881 g / 38.1 N	23.29 kg / 51.34 pounds ~0 Gs
70 mm	17.01 kg / 37.49 pounds 1 693 Gs	2.55 kg / 5.62 pounds 2551 g / 25.0 N	15.31 kg / 33.74 pounds ~0 Gs
80 mm	11.28 kg / 24.86 pounds 1 379 Gs	1.69 kg / 3.73 pounds 1692 g / 16.6 N	10.15 kg / 22.38 pounds ~0 Gs
90 mm	7.57 kg / 16.69 pounds 1 130 Gs	1.14 kg / 2.50 pounds 1136 g / 11.1 N	6.81 kg / 15.02 pounds ~0 Gs
100 mm	5.16 kg / 11.37 pounds 932 Gs	0.77 kg / 1.71 pounds 774 g / 7.6 N	4.64 kg / 10.23 pounds ~0 Gs

Two strong neodymiums interact from a wider radius than a neodymium and metal combination. Such a system of two magnets creates a more powerful interaction and a larger range of operation. Designing a solid fastener? Use a pair of magnets instead of a neodymium and a steel. Be careful that when connecting a pair of magnets, the impact force is huge. The levitation is a bit weaker than the attraction, but still impressive.
*The magnetic induction between like poles reaches ~0 Gs in the exact middle between the magnets (caused by magnetic field nullification).
Attention: Calculations refer to sliding force of dual same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	30.5 cm
Hearing aid	10 Gs (1.0 mT)	24.0 cm
Timepiece	20 Gs (2.0 mT)	18.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	14.5 cm
Remote	50 Gs (5.0 mT)	13.5 cm
Payment card	400 Gs (40.0 mT)	5.5 cm
HDD hard drive	600 Gs (60.0 mT)	4.5 cm

Powerful magnet radiation poses a large risk to IT equipment as well as pacemakers. These neodymiums generate a field that disrupts operation of digital equipment. Remember: the unseen radiation acts through matter and plastic. Exceptional care must be exercised by people with cochlear implants and insulin pumps. Influence will be felt by: mechanical watches, remotes, membranes, and displays. Do not bring the product near payment cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MW 70x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	17.39 km/h (4.83 m/s)	6.73 J
30 mm	24.57 km/h (6.83 m/s)	13.45 J
50 mm	30.08 km/h (8.36 m/s)	20.15 J
100 mm	41.97 km/h (11.66 m/s)	39.23 J

Neodymium magnets are delicate – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely turns into a projectile. Kinetic force can trigger coating fragments or injury to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the steel surface. A contact at a velocity of dozens of km/h ends with a crack of the magnet. Wear safety glasses when handling with large magnets.

Table 9: Corrosion resistance
MW 70x20 / 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)

Neodymium magnets are highly susceptible to corrosion without proper protection. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 70x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	128 363 Mx	1283.6 µWb
P_c Coefficient	0.39	Low (Flat)

Total magnetic flux emitted by the pole surface. Key data for generator designers and motors. P_c value determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 70x20 / N38

Environment	Effective steel pull	Effect
Air (land)	99.83 kg	Standard
Water (riverbed)	114.31 kg (+14.48 kg buoyancy gain)	+14.5%

Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.

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

1. Wall mount (shear)

*Note: On a vertical wall, the magnet holds only approx. 20-30% of its nominal pull.

2. Plate thickness effect

*Thin steel (e.g. computer case) severely reduces the holding force.

3. Thermal stability

*For standard magnets, the critical limit is 80°C.

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.39

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 specification and ecology

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%

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: 010095-2026

Quick Unit Converter

Pulling force

Force (N)

lbs

Field Strength

Gauss (Gs)

Just populate any input, and the converter calculate the rest for you.

Check out also products

Product available Ships tomorrow

SMZR 32x250 / N52 - magnetic separator with handle

774.90 ZŁ brutto / pcs

Product available Ships tomorrow

MP 25x7.5/4.5x5 / N38 - ring magnet

8.00 ZŁ brutto / pcs

Product available Ships tomorrow

UI 45x13x6 [Z323] / N38 - badge holder

2.40 ZŁ brutto / pcs

Product available Ships tomorrow

MP 25x12.5x5 / N38 - ring magnet

6.20 ZŁ brutto / pcs

This product is an incredibly powerful rod magnet, composed of advanced NdFeB material, which, at dimensions of Ø70x20 mm, guarantees the highest energy density. The MW 70x20 / N38 model is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 99.83 kg), this product is in stock from our warehouse in Poland, ensuring rapid order fulfillment. Moreover, its triple-layer Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, guaranteeing an aesthetic appearance and durability for years.

It successfully proves itself in modeling, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 979.00 N with a weight of only 577.27 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.

Due to the delicate structure of the ceramic sinter, you must not use 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 are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Grade N38 is the most frequently chosen standard for industrial neodymium magnets, offering a great economic balance and operational stability. If you need the strongest magnets in the same volume (Ø70x20), 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 Ø70x20 mm, which, at a weight of 577.27 g, makes it an element with high magnetic energy density. The value of 979.00 N means that the magnet is capable of holding a weight many times exceeding its own mass of 577.27 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 20 mm), which means that the N and S poles are located on the flat, circular surfaces. 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 diametrically if your project requires it.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

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

Their strength is maintained, and after approximately ten years it drops only by ~1% (theoretically),
Magnets very well resist against demagnetization caused by ambient magnetic noise,
In other words, due to the metallic layer of silver, the element looks attractive,
The surface of neodymium magnets generates a maximum magnetic field – this is a key feature,
Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
In view of the possibility of flexible shaping and adaptation to specialized projects, NdFeB magnets can be modeled in a broad palette of shapes and sizes, which increases their versatility,
Significant place in future technologies – they are commonly used in data components, brushless drives, medical equipment, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which makes them useful in miniature devices

Weaknesses

Drawbacks and weaknesses of neodymium magnets: application proposals

Susceptibility to cracking is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a steel housing, which not only protects them against impacts but also raises their durability
We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
They oxidize in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited possibility of producing threads in the magnet and complicated shapes - preferred is casing - mounting mechanism.
Health risk resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these products can be problematic in diagnostics medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

The declared magnet strength represents the maximum value, measured under laboratory conditions, specifically:

with the use of a yoke made of special test steel, guaranteeing maximum field concentration
whose thickness reaches at least 10 mm
with an ground touching surface
without the slightest insulating layer between the magnet and steel
during pulling in a direction perpendicular to the plane
in neutral thermal conditions

Practical lifting capacity: influencing factors

During everyday use, the real power is determined by many variables, listed from crucial:

Distance – the presence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the maximum value.
Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field passes through the material instead of converting into lifting capacity.
Material type – the best choice is pure iron steel. Stainless steels may generate lower lifting capacity.
Surface structure – the more even the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
Temperature influence – hot environment weakens pulling force. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. In addition, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets

Crushing force

Pinching hazard: The pulling power is so great that it can result in hematomas, crushing, and even bone fractures. Use thick gloves.

Eye protection

NdFeB magnets are sintered ceramics, which means they are fragile like glass. Clashing of two magnets will cause them breaking into small pieces.

Power loss in heat

Standard neodymium magnets (N-type) lose power when the temperature goes above 80°C. Damage is permanent.

Threat to navigation

GPS units and smartphones are highly sensitive to magnetism. Close proximity with a powerful NdFeB magnet can ruin the internal compass in your phone.

Allergy Warning

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.

Mechanical processing

Powder produced during cutting of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.

Danger to pacemakers

Warning for patients: Strong magnetic fields affect electronics. Keep at least 30 cm distance or request help to handle the magnets.

Adults only

Neodymium magnets are not suitable for play. Swallowing multiple magnets may result in them pinching intestinal walls, which constitutes a critical condition and requires urgent medical intervention.

Handling rules

Be careful. Rare earth magnets attract from a long distance and snap with massive power, often quicker than you can move away.

Threat to electronics

Intense magnetic fields can destroy records on payment cards, hard drives, and other magnetic media. Maintain a gap of min. 10 cm.

Warning! Looking for details? Read our article: Are neodymium magnets dangerous?

MW 70x20 / N38 - cylindrical magnet

Product card - MW 70x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical analysis of the product - data

Table 1: Static pull force (force vs gap) - interaction chart MW 70x20 / N38

Table 2: Shear hold (wall) MW 70x20 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces MW 70x20 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection MW 70x20 / N38

Table 5: Thermal stability (stability) - power drop MW 70x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision MW 70x20 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MW 70x20 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 70x20 / N38

Table 9: Corrosion resistance MW 70x20 / N38

Table 10: Construction data (Flux) MW 70x20 / N38

Table 11: Physics of underwater searching MW 70x20 / N38

1. Wall mount (shear)

2. Plate thickness effect

3. Thermal stability

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

Material specification

Environmental data

Pulling force

Field Strength

Check out also products

SMZR 32x250 / N52 - magnetic separator with handle

MP 25x7.5/4.5x5 / N38 - ring magnet

UI 45x13x6 [Z323] / N38 - badge holder

MP 25x12.5x5 / N38 - ring magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Weaknesses

Lifting parameters

Maximum holding power of the magnet – what contributes to it?

Practical lifting capacity: influencing factors

H&S for magnets

Crushing force

Eye protection

Power loss in heat

Threat to navigation

Allergy Warning

Mechanical processing

Danger to pacemakers

Adults only

Handling rules

Threat to electronics

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs gap) - interaction chart
MW 70x20 / N38

Table 2: Shear hold (wall)
MW 70x20 / N38

Table 3: Vertical assembly (sliding) - behavior on slippery surfaces
MW 70x20 / N38

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 70x20 / N38

Table 5: Thermal stability (stability) - power drop
MW 70x20 / N38

Table 6: Magnet-Magnet interaction (attraction) - field collision
MW 70x20 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 70x20 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 70x20 / N38

Table 9: Corrosion resistance
MW 70x20 / N38

Table 10: Construction data (Flux)
MW 70x20 / N38

Table 11: Physics of underwater searching
MW 70x20 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.