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MW 20x2 / 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 010041

GTIN/EAN: 5906301810407

5.00

Diameter Ø

20 mm [±0,1 mm]

Height

2 mm [±0,1 mm]

Weight

4.71 g

Magnetization Direction

↑ axial

Load capacity

1.63 kg / 16.02 N

Magnetic Induction

121.57 mT / 1216 Gs

Coating

[NiCuNi] Nickel

see technical data »

2.08 ZŁ with VAT / pcs + price for transport

1.690 ZŁ net + 23% VAT / pcs

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Call us +48 888 99 98 98 alternatively drop us a message through form our website.
Force and structure of a neodymium magnet can be tested on our our magnetic calculator.

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Technical details - MW 20x2 / N38 - cylindrical magnet

Specification / characteristics - MW 20x2 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010041
GTIN/EAN	5906301810407
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	20 mm [±0,1 mm]
Height	2 mm [±0,1 mm]
Weight	4.71 g
Magnetization Direction	↑ axial
Load capacity ~ ?	1.63 kg / 16.02 N
Magnetic Induction ~ ?	121.57 mT / 1216 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 20x2 / 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 magnet - technical parameters

The following information represent the direct effect of a engineering analysis. Values are based on algorithms for the material Nd₂Fe₁₄B. Actual performance may differ from theoretical values. Use these data as a preliminary roadmap for designers.

Table 1: Static force (force vs gap) - power drop
MW 20x2 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	1216 Gs 121.6 mT	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N	safe
1 mm	1165 Gs 116.5 mT	1.50 kg / 3.30 lbs 1496.3 g / 14.7 N	safe
2 mm	1087 Gs 108.7 mT	1.30 kg / 2.87 lbs 1302.7 g / 12.8 N	safe
3 mm	991 Gs 99.1 mT	1.08 kg / 2.39 lbs 1083.7 g / 10.6 N	safe
5 mm	783 Gs 78.3 mT	0.68 kg / 1.49 lbs 675.9 g / 6.6 N	safe
10 mm	379 Gs 37.9 mT	0.16 kg / 0.35 lbs 158.4 g / 1.6 N	safe
15 mm	185 Gs 18.5 mT	0.04 kg / 0.08 lbs 37.9 g / 0.4 N	safe
20 mm	99 Gs 9.9 mT	0.01 kg / 0.02 lbs 10.8 g / 0.1 N	safe
30 mm	36 Gs 3.6 mT	0.00 kg / 0.00 lbs 1.4 g / 0.0 N	safe
50 mm	9 Gs 0.9 mT	0.00 kg / 0.00 lbs 0.1 g / 0.0 N	safe

Pulling power weakens sharply per each millimeter of gap. Note that even a very thin break (e.g., dirt, paint, veneer) noticeably weakens the grip. Neodymiums work strongest in perfect adhesion; distance kills the force. Notice how rapidly the parameters drop, when the product does not adhere directly to the metal substrate. When planning the arrangement, discard additional spacers.

Table 2: Shear force (wall)
MW 20x2 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	0.33 kg / 0.72 lbs 326.0 g / 3.2 N
1 mm	Stal (~0.2)	0.30 kg / 0.66 lbs 300.0 g / 2.9 N
2 mm	Stal (~0.2)	0.26 kg / 0.57 lbs 260.0 g / 2.6 N
3 mm	Stal (~0.2)	0.22 kg / 0.48 lbs 216.0 g / 2.1 N
5 mm	Stal (~0.2)	0.14 kg / 0.30 lbs 136.0 g / 1.3 N
10 mm	Stal (~0.2)	0.03 kg / 0.07 lbs 32.0 g / 0.3 N
15 mm	Stal (~0.2)	0.01 kg / 0.02 lbs 8.0 g / 0.1 N
20 mm	Stal (~0.2)	0.00 kg / 0.00 lbs 2.0 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 calculates the estimated force needed to cause the downward movement of the magnet downwards against a upright steel plate (assuming typical friction). This value is a function of the air gap between the magnet and the metal.

Table 3: Vertical assembly (shearing) - vertical pull
MW 20x2 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	0.49 kg / 1.08 lbs 489.0 g / 4.8 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	0.33 kg / 0.72 lbs 326.0 g / 3.2 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	0.16 kg / 0.36 lbs 163.0 g / 1.6 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	0.82 kg / 1.80 lbs 815.0 g / 8.0 N

When hanging a magnet on a vertical surface (e.g., a board), it will maintain just about 20%-30% of its maximum pull force. Gravitational force as well as a low friction coefficient influence the fact that products slip easier than they pull off. Want to create a wall mount? Consider that the sliding force is significantly lower than the maximum static pull force. On a slippery surface, the element will slip down under a significantly smaller weight. Using a rubber layer can effectively increase the grip.

Table 4: Material efficiency (substrate influence) - power losses
MW 20x2 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	10%	0.16 kg / 0.36 lbs 163.0 g / 1.6 N
1 mm	25%	0.41 kg / 0.90 lbs 407.5 g / 4.0 N
2 mm	50%	0.82 kg / 1.80 lbs 815.0 g / 8.0 N
3 mm	75%	1.22 kg / 2.70 lbs 1222.5 g / 12.0 N
5 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N
10 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N
11 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N
12 mm	100%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N

A too thin steel is unable to absorb the full magnetic flux, which squanders power of the magnet. Should you attach a powerful product to a thin surface, the magnetism will pass right through and the holding will be smaller. To achieve 100% of this magnet's potential, you need a suitably thick element of steel. The material oversaturation means that on sheet metal structures (e.g., appliance housings), the holder shows lower pull force. We recommend selecting the steel cross-section based on the following data.

Table 5: Thermal resistance (stability) - power drop
MW 20x2 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	1.63 kg / 3.59 lbs 1630.0 g / 16.0 N	OK
40 °C	-2.2%	1.59 kg / 3.51 lbs 1594.1 g / 15.6 N	OK
60 °C	-4.4%	1.56 kg / 3.44 lbs 1558.3 g / 15.3 N
80 °C	-6.6%	1.52 kg / 3.36 lbs 1522.4 g / 14.9 N
100 °C	-28.8%	1.16 kg / 2.56 lbs 1160.6 g / 11.4 N

Ordinary NdFeB products lose strength after exceeding the maximum temperature. Watch out for overheating – heat can irreversibly demagnetize this magnet. With every degree above norm, the magnet's capacity momentarily decreases. Do not use this product near heat sources higher than its safe range. Exceeding the critical threshold will cause permanent loss of magnetism.

*Technical advisory: Temperature resistance is determined by both grade, and the Permeance Coefficient Pc. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress than long magnets. Warning indicator in the table points to a risk of irreversible loss for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 20x2 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	2.86 kg / 6.31 lbs 2 301 Gs	0.43 kg / 0.95 lbs 429 g / 4.2 N	N/A
1 mm	2.76 kg / 6.09 lbs 2 388 Gs	0.41 kg / 0.91 lbs 414 g / 4.1 N	2.49 kg / 5.48 lbs ~0 Gs
2 mm	2.63 kg / 5.79 lbs 2 329 Gs	0.39 kg / 0.87 lbs 394 g / 3.9 N	2.36 kg / 5.21 lbs ~0 Gs
3 mm	2.47 kg / 5.44 lbs 2 257 Gs	0.37 kg / 0.82 lbs 370 g / 3.6 N	2.22 kg / 4.89 lbs ~0 Gs
5 mm	2.10 kg / 4.62 lbs 2 081 Gs	0.31 kg / 0.69 lbs 315 g / 3.1 N	1.89 kg / 4.16 lbs ~0 Gs
10 mm	1.19 kg / 2.62 lbs 1 565 Gs	0.18 kg / 0.39 lbs 178 g / 1.7 N	1.07 kg / 2.35 lbs ~0 Gs
20 mm	0.28 kg / 0.61 lbs 758 Gs	0.04 kg / 0.09 lbs 42 g / 0.4 N	0.25 kg / 0.55 lbs ~0 Gs
50 mm	0.01 kg / 0.01 lbs 115 Gs	0.00 kg / 0.00 lbs 1 g / 0.0 N	0.00 kg / 0.00 lbs ~0 Gs
60 mm	0.00 kg / 0.01 lbs 72 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 48 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 33 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 24 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 18 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 significantly greater distance than a magnet and sheet setup. Such a system of two magnets creates a more powerful interaction and a wider radius of operation. Want to build a solid fastener? Utilize two neodymiums instead of one magnet and a striker plate. Exercise caution that when bringing together two magnets, the collision energy is extreme. The levitation is slightly lower than the attraction, but still large.
*Flux density in repulsion mode drops to ~0 Gs at the midpoint between the magnets (caused by magnetic field nullification).
Important: Results demonstrate friction force of a pair of matching magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 20x2 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	6.5 cm
Hearing aid	10 Gs (1.0 mT)	5.0 cm
Timepiece	20 Gs (2.0 mT)	4.0 cm
Mobile device	40 Gs (4.0 mT)	3.0 cm
Car key	50 Gs (5.0 mT)	3.0 cm
Payment card	400 Gs (40.0 mT)	1.0 cm
HDD hard drive	600 Gs (60.0 mT)	1.0 cm

Powerful magnet radiation is a large risk to electronic devices as well as pacemakers. These neodymiums produce a field that destroys function of digital equipment. Be aware: the invisible magnetic field penetrates the body and housings. Special caution must be exercised by people with cochlear implants and drug dispensers. The risk also applies to: mechanical watches, remotes, membranes, and screens. Do not place the magnet near cards, HDD media, or precise measuring instruments.

Table 8: Impact energy (kinetic energy) - collision effects
MW 20x2 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.87 km/h (5.52 m/s)	0.07 J
30 mm	32.51 km/h (9.03 m/s)	0.19 J
50 mm	41.95 km/h (11.65 m/s)	0.32 J
100 mm	59.33 km/h (16.48 m/s)	0.64 J

Magnetic elements are prone to chipping – a strong collision with metal risks their cracking. Control the attraction moment – a magnet released freely becomes dangerous. Kinetic force can cause material chips or dangerous crushing to skin. Be sure to control the product during bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed means shattering of the neodymium. Wear eye protection when playing with large magnets.

Table 9: Coating parameters (durability)
MW 20x2 / 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 20x2 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	5 038 Mx	50.4 µWb
P_c Coefficient	0.16	Low (Flat)

Flux value passing through the pole surface. Essential parameter for generator designers as well as sensors. P_c value defines the working geometry.

Table 11: Submerged application
MW 20x2 / N38

Environment	Effective steel pull	Effect
Air (land)	1.63 kg	Standard
Water (riverbed)	1.87 kg (+0.24 kg buoyancy gain)	+14.5%

Rust risk: This magnet has a standard nickel coating. After use in water, it must be dried and maintained immediately, otherwise it will rust!

Contrary to myths, water does not block the magnetic field. Note: for permanent underwater work, we recommend magnets with an anti-corrosive (epoxy) coating.

1. Shear force

*Note: On a vertical surface, the magnet retains merely ~20% of its nominal pull.

2. Steel thickness impact

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

3. Thermal stability

*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) = 0.16

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.

Technical and environmental data

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: 010041-2026

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MW 8x8 / N38 - cylindrical magnet

1.341 ZŁ brutto / pcs

The presented product is an incredibly powerful rod magnet, composed of modern NdFeB material, which, at dimensions of Ø20x2 mm, guarantees maximum efficiency. The MW 20x2 / N38 model is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 1.63 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.

This model is ideal for building electric motors, advanced Hall effect sensors, and efficient filters, where maximum induction on a small surface counts. Thanks to the pull force of 16.02 N with a weight of only 4.71 g, this rod is indispensable in miniature devices and wherever every gram matters.

Since our magnets have a tolerance of ±0.1mm, the best method is to glue them into holes with a slightly larger diameter (e.g., 20.1 mm) using two-component epoxy glues. To ensure long-term durability in industry, specialized industrial adhesives 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 (Ø20x2), 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 Ø20x2 mm, which, at a weight of 4.71 g, makes it an element with impressive magnetic energy density. The value of 16.02 N means that the magnet is capable of holding a weight many times exceeding its own mass of 4.71 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 2 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 through the diameter if your project requires it.

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.

Pros

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

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
Neodymium magnets are highly resistant to demagnetization caused by external interference,
A magnet with a metallic nickel surface is more attractive,
Magnets exhibit excellent magnetic induction on the outer side,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for functioning at temperatures reaching 230°C and above...
Thanks to flexibility in constructing and the capacity to adapt to client solutions,
Significant place in innovative solutions – they are used in magnetic memories, electric motors, precision medical tools, and multitasking production systems.
Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Weaknesses

Drawbacks and weaknesses of neodymium magnets and proposals for their use:

At very 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 lose their strength 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
They rust in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
We suggest a housing - magnetic holder, due to difficulties in creating nuts inside the magnet and complicated forms.
Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the context of child safety. Furthermore, small elements of these devices can disrupt the diagnostic process medical after entering the body.
Due to neodymium price, their price is higher than average,

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Magnet power is the result of a measurement for optimal configuration, taking into account:

using a sheet made of mild steel, acting as a circuit closing element
whose transverse dimension is min. 10 mm
characterized by lack of roughness
under conditions of ideal adhesion (metal-to-metal)
for force applied at a right angle (pull-off, not shear)
in temp. approx. 20°C

Lifting capacity in practice – influencing factors

In real-world applications, the real power is determined by several key aspects, presented from crucial:

Distance – the presence of any layer (rust, tape, air) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
Steel thickness – too thin sheet does not accept the full field, causing part of the flux to be wasted into the air.
Plate material – mild steel gives the best results. Higher carbon content lower magnetic permeability and lifting capacity.
Surface condition – smooth surfaces ensure maximum contact, which increases force. Rough surfaces reduce efficiency.
Temperature influence – hot environment reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a small distance between the magnet and the plate reduces the holding force.

H&S for magnets

GPS and phone interference

Navigation devices and smartphones are extremely sensitive to magnetic fields. Direct contact with a powerful NdFeB magnet can ruin the internal compass in your phone.

Fire risk

Powder created during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.

No play value

These products are not intended for children. Accidental ingestion of several magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.

Handling rules

Exercise caution. Rare earth magnets act from a distance and connect with massive power, often faster than you can react.

Protective goggles

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Thermal limits

Avoid heat. NdFeB magnets are sensitive to heat. If you require resistance above 80°C, inquire about HT versions (H, SH, UH).

Warning for allergy sufferers

It is widely known that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, prevent touching magnets with bare hands or choose coated magnets.

Safe distance

Very strong magnetic fields can destroy records on payment cards, hard drives, and storage devices. Maintain a gap of min. 10 cm.

Pacemakers

For implant holders: Powerful magnets disrupt medical devices. Maintain minimum 30 cm distance or request help to handle the magnets.

Pinching danger

Big blocks can crush fingers instantly. Under no circumstances put your hand betwixt two strong magnets.

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

MW 20x2 / N38 - cylindrical magnet

Technical details - MW 20x2 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the magnet - technical parameters

Table 1: Static force (force vs gap) - power drop MW 20x2 / N38

Table 2: Shear force (wall) MW 20x2 / N38

Table 3: Vertical assembly (shearing) - vertical pull MW 20x2 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 20x2 / N38

Table 5: Thermal resistance (stability) - power drop MW 20x2 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range MW 20x2 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MW 20x2 / N38

Table 8: Impact energy (kinetic energy) - collision effects MW 20x2 / N38

Table 9: Coating parameters (durability) MW 20x2 / N38

Table 10: Electrical data (Flux) MW 20x2 / N38

Table 11: Submerged application MW 20x2 / N38

1. Shear force

2. Steel thickness impact

3. Thermal stability

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

Elemental analysis

Environmental data

Magnet pull force

Magnetic Induction

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MPL 20x8x6 / N38 - lamellar magnet

HH 20x7.2 [M4] / N38 - through hole magnetic holder

MW 8x8 / N38 - cylindrical magnet

Strengths as well as weaknesses of Nd2Fe14B magnets.

Pros

Weaknesses

Holding force characteristics

Maximum magnetic pulling force – what contributes to it?

Lifting capacity in practice – influencing factors

H&S for magnets

GPS and phone interference

Fire risk

No play value

Handling rules

Protective goggles

Thermal limits

Warning for allergy sufferers

Safe distance

Pacemakers

Pinching danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (force vs gap) - power drop
MW 20x2 / N38

Table 2: Shear force (wall)
MW 20x2 / N38

Table 3: Vertical assembly (shearing) - vertical pull
MW 20x2 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 20x2 / N38

Table 5: Thermal resistance (stability) - power drop
MW 20x2 / N38

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 20x2 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 20x2 / N38

Table 8: Impact energy (kinetic energy) - collision effects
MW 20x2 / N38

Table 9: Coating parameters (durability)
MW 20x2 / N38

Table 10: Electrical data (Flux)
MW 20x2 / N38

Table 11: Submerged application
MW 20x2 / N38

Strengths as well as weaknesses of Nd₂Fe₁₄B magnets.