Product available Ships today (order by 14:00)

MW 45x20 / 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 010071

GTIN/EAN: 5906301810704

5.00

Diameter Ø

45 mm [±0,1 mm]

Height

20 mm [±0,1 mm]

Weight

238.56 g

Magnetization Direction

↑ axial

Load capacity

60.94 kg / 597.79 N

Magnetic Induction

411.81 mT / 4118 Gs

Coating

[NiCuNi] Nickel

see properties »

84.45 ZŁ with VAT / pcs + price for transport

68.66 ZŁ net + 23% VAT / pcs

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Physical properties - MW 45x20 / N38 - cylindrical magnet

Specification / characteristics - MW 45x20 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010071
GTIN/EAN	5906301810704
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	45 mm [±0,1 mm]
Height	20 mm [±0,1 mm]
Weight	238.56 g
Magnetization Direction	↑ axial
Load capacity ~ ?	60.94 kg / 597.79 N
Magnetic Induction ~ ?	411.81 mT / 4118 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 45x20 / 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

Physical modeling of the assembly - report

The following information represent the direct effect of a mathematical simulation. Values were calculated on models for the material Nd₂Fe₁₄B. Real-world performance might slightly differ. Treat these data as a preliminary roadmap for designers.

Table 1: Static force (pull vs distance) - power drop
MW 45x20 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4117 Gs 411.7 mT	60.94 kg / 134.35 lbs 60940.0 g / 597.8 N	critical level
1 mm	3955 Gs 395.5 mT	56.23 kg / 123.96 lbs 56228.7 g / 551.6 N	critical level
2 mm	3786 Gs 378.6 mT	51.51 kg / 113.57 lbs 51512.3 g / 505.3 N	critical level
3 mm	3613 Gs 361.3 mT	46.91 kg / 103.42 lbs 46911.0 g / 460.2 N	critical level
5 mm	3263 Gs 326.3 mT	38.28 kg / 84.40 lbs 38282.6 g / 375.6 N	critical level
10 mm	2442 Gs 244.2 mT	21.43 kg / 47.26 lbs 21434.6 g / 210.3 N	critical level
15 mm	1776 Gs 177.6 mT	11.34 kg / 25.00 lbs 11340.0 g / 111.2 N	critical level
20 mm	1285 Gs 128.5 mT	5.93 kg / 13.08 lbs 5932.8 g / 58.2 N	medium risk
30 mm	694 Gs 69.4 mT	1.73 kg / 3.82 lbs 1730.8 g / 17.0 N	safe
50 mm	249 Gs 24.9 mT	0.22 kg / 0.49 lbs 222.3 g / 2.2 N	safe

Magnetic force weakens sharply with every mm of gap. Keep in mind that even a microscopic distance (e.g., dirt, varnish, dust) significantly reduces the pull force. Neodymiums hold strongest at the point of direct contact; gap kills the power. Analyze how rapidly the pull force fall, when the magnet does not adhere flatly to the metal substrate. When designing the mounting, eliminate unnecessary gaps.

Table 2: Shear force (vertical surface)
MW 45x20 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	12.19 kg / 26.87 lbs 12188.0 g / 119.6 N
1 mm	Stal (~0.2)	11.25 kg / 24.79 lbs 11246.0 g / 110.3 N
2 mm	Stal (~0.2)	10.30 kg / 22.71 lbs 10302.0 g / 101.1 N
3 mm	Stal (~0.2)	9.38 kg / 20.68 lbs 9382.0 g / 92.0 N
5 mm	Stal (~0.2)	7.66 kg / 16.88 lbs 7656.0 g / 75.1 N
10 mm	Stal (~0.2)	4.29 kg / 9.45 lbs 4286.0 g / 42.0 N
15 mm	Stal (~0.2)	2.27 kg / 5.00 lbs 2268.0 g / 22.2 N
20 mm	Stal (~0.2)	1.19 kg / 2.61 lbs 1186.0 g / 11.6 N
30 mm	Stal (~0.2)	0.35 kg / 0.76 lbs 346.0 g / 3.4 N
50 mm	Stal (~0.2)	0.04 kg / 0.10 lbs 44.0 g / 0.4 N

The following data defines the approximate holding capacity sufficient to initiate the sliding of the magnet downwards against a upright steel wall (assuming typical friction coefficient). This value is a function of the distance between the magnet and the metal.

Table 3: Wall mounting (sliding) - vertical pull
MW 45x20 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	18.28 kg / 40.30 lbs 18282.0 g / 179.3 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	12.19 kg / 26.87 lbs 12188.0 g / 119.6 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	6.09 kg / 13.43 lbs 6094.0 g / 59.8 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	30.47 kg / 67.17 lbs 30470.0 g / 298.9 N

When mounting a magnet on a vertical plane (e.g., a fridge), it will only hold only approx. 20%-30% of nominal attraction strength. Gravitational force and a weak degree of grip influence the fact that products slide down faster than they pull off. Want to create a vertical fastening? Remember that the sliding force is noticeably lower than the maximum static pull force. On a smooth steel, the holder will slip down under a much lighter cargo. Application of an anti-slip layer can drastically raise the stability.

Table 4: Material efficiency (saturation) - sheet metal selection
MW 45x20 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	2.03 kg / 4.48 lbs 2031.3 g / 19.9 N
1 mm	8%	5.08 kg / 11.20 lbs 5078.3 g / 49.8 N
2 mm	17%	10.16 kg / 22.39 lbs 10156.7 g / 99.6 N
3 mm	25%	15.24 kg / 33.59 lbs 15235.0 g / 149.5 N
5 mm	42%	25.39 kg / 55.98 lbs 25391.7 g / 249.1 N
10 mm	83%	50.78 kg / 111.96 lbs 50783.3 g / 498.2 N
11 mm	92%	55.86 kg / 123.15 lbs 55861.7 g / 548.0 N
12 mm	100%	60.94 kg / 134.35 lbs 60940.0 g / 597.8 N

A too thin steel cannot take in the full magnetic flux, which squanders power of the magnet. Should you install a neodymium to a thin surface, the field will pass right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's power, you require a sufficiently solid element of metal. The material oversaturation causes that on delicate walls (e.g., thin profiles), the magnet works worse. We suggest choosing the steel thickness from these parameters.

Table 5: Working in heat (stability) - resistance threshold
MW 45x20 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	60.94 kg / 134.35 lbs 60940.0 g / 597.8 N	OK
40 °C	-2.2%	59.60 kg / 131.39 lbs 59599.3 g / 584.7 N	OK
60 °C	-4.4%	58.26 kg / 128.44 lbs 58258.6 g / 571.5 N
80 °C	-6.6%	56.92 kg / 125.48 lbs 56918.0 g / 558.4 N
100 °C	-28.8%	43.39 kg / 95.66 lbs 43389.3 g / 425.6 N

Standard neodymium magnets lose strength above the temperature limit. Watch out for overheating – excessive heat can irreversibly demagnetize this product. As the temperature rises, the neodymium's force briefly decreases. Avoid using this product close to heaters exceeding its safe range. Too high temperature will cause irreversible degradation of magnetic properties.

*Technical advisory: Thermal stability is determined by both grade, but also on the magnet's shape. Thin magnets (pancake types) are more susceptible to demagnetization at lower temperatures than long magnets. Red status in the table indicates permanent field degradation for this particular item.

Table 6: Two magnets (repulsion) - field range
MW 45x20 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Sliding Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	166.23 kg / 366.47 lbs 5 401 Gs	24.93 kg / 54.97 lbs 24934 g / 244.6 N	N/A
1 mm	159.87 kg / 352.45 lbs 8 076 Gs	23.98 kg / 52.87 lbs 23980 g / 235.2 N	143.88 kg / 317.20 lbs ~0 Gs
2 mm	153.38 kg / 338.14 lbs 7 910 Gs	23.01 kg / 50.72 lbs 23007 g / 225.7 N	138.04 kg / 304.33 lbs ~0 Gs
3 mm	146.92 kg / 323.90 lbs 7 742 Gs	22.04 kg / 48.58 lbs 22038 g / 216.2 N	132.23 kg / 291.51 lbs ~0 Gs
5 mm	134.19 kg / 295.83 lbs 7 399 Gs	20.13 kg / 44.37 lbs 20128 g / 197.5 N	120.77 kg / 266.25 lbs ~0 Gs
10 mm	104.43 kg / 230.22 lbs 6 527 Gs	15.66 kg / 34.53 lbs 15664 g / 153.7 N	93.98 kg / 207.20 lbs ~0 Gs
20 mm	58.47 kg / 128.90 lbs 4 884 Gs	8.77 kg / 19.34 lbs 8770 g / 86.0 N	52.62 kg / 116.01 lbs ~0 Gs
50 mm	8.61 kg / 18.98 lbs 1 874 Gs	1.29 kg / 2.85 lbs 1291 g / 12.7 N	7.75 kg / 17.08 lbs ~0 Gs
60 mm	4.72 kg / 10.41 lbs 1 388 Gs	0.71 kg / 1.56 lbs 708 g / 6.9 N	4.25 kg / 9.37 lbs ~0 Gs
70 mm	2.68 kg / 5.91 lbs 1 046 Gs	0.40 kg / 0.89 lbs 402 g / 3.9 N	2.41 kg / 5.32 lbs ~0 Gs
80 mm	1.58 kg / 3.48 lbs 803 Gs	0.24 kg / 0.52 lbs 237 g / 2.3 N	1.42 kg / 3.14 lbs ~0 Gs
90 mm	0.96 kg / 2.12 lbs 627 Gs	0.14 kg / 0.32 lbs 145 g / 1.4 N	0.87 kg / 1.91 lbs ~0 Gs
100 mm	0.61 kg / 1.34 lbs 497 Gs	0.09 kg / 0.20 lbs 91 g / 0.9 N	0.55 kg / 1.20 lbs ~0 Gs

Two magnetic products interact from a much further distance than a neodymium and metal combination. The connection of two magnets produces a massive flux and a larger range of action. Designing a powerful holder? Apply two magnets instead of one magnet and a steel. Remember that when bringing together two magnets, the pinch force is massive. The repulsion force is a bit weaker than the connection force, but still significant.
*Field value in repulsion mode reaches ~0 Gs at the geometric center of the gap (due to field cancellation).
Attention: Estimates refer to friction force of two identical neodymium magnets (friction ~0.15 for Ni-Ni coating).

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 45x20 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	22.5 cm
Hearing aid	10 Gs (1.0 mT)	17.5 cm
Mechanical watch	20 Gs (2.0 mT)	14.0 cm
Phone / Smartphone	40 Gs (4.0 mT)	10.5 cm
Remote	50 Gs (5.0 mT)	10.0 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	3.5 cm

Powerful magnet radiation is a real danger to electronic devices and medical implants. These NdFeB products produce a flux that disrupts operation of sensitive medical devices. Notice: the unseen radiation passes through tissues and housings. Special caution must be taken by people with hearing aids and insulin pumps. The risk also applies to: automatic timepieces, car keys, membranes, and displays. Avoid contact with magnetic cards, HDD media, or sensitive navigation tools.

Table 8: Dynamics (cracking risk) - collision effects
MW 45x20 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	19.34 km/h (5.37 m/s)	3.44 J
30 mm	28.41 km/h (7.89 m/s)	7.43 J
50 mm	36.12 km/h (10.03 m/s)	12.01 J
100 mm	50.98 km/h (14.16 m/s)	23.92 J

Neodymium magnets are prone to chipping – a violent impact against metal can result in shattering. Control the attraction moment – a magnet released freely speeds with massive force. Kinetic force can trigger coating fragments or painful pinches to skin. Always hold the magnet during bringing near metal so it doesn't hit violently against the steel surface. A contact at a velocity of dozens of km/h almost guarantees destruction of the magnet. Wear safety glasses when playing with large magnets.

Table 9: Coating parameters (durability)
MW 45x20 / 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 following table defines the conditions under which this product can be safely used. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Flux)
MW 45x20 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	66 952 Mx	669.5 µWb
P_c Coefficient	0.54	Low (Flat)

Flux value passing through the magnet pole. Key data in coil applications and motors. The P_c coefficient defines the working geometry.

Table 11: Hydrostatics and buoyancy
MW 45x20 / N38

Environment	Effective steel pull	Effect
Air (land)	60.94 kg	Standard
Water (riverbed)	69.78 kg (+8.84 kg buoyancy gain)	+14.5%

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

In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.

1. Vertical hold

*Warning: On a vertical wall, the magnet holds just a fraction of its max power.

2. Steel saturation

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.54

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

Material specification

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

Sustainability

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

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

batch number/type

id: 010071-2026

Quick Unit Converter

Force (pull)

Force (N)

Pounds (lbs)

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Gauss (Gs)

Simply complete one field, and the converter calculate everything else automatically.

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The offered product is an extremely powerful rod magnet, composed of durable NdFeB material, which, at dimensions of Ø45x20 mm, guarantees the highest energy density. The MW 45x20 / N38 model is characterized by high dimensional repeatability and industrial build quality, making it an excellent solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 60.94 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Additionally, its triple-layer 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 automation, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 597.79 N with a weight of only 238.56 g, this rod is indispensable in electronics and wherever low weight is crucial.

Since our magnets have a very precise dimensions, the best method is to glue them into holes with a slightly larger diameter (e.g., 45.1 mm) using epoxy glues. To ensure long-term durability in automation, specialized industrial adhesives are used, which do not react with the nickel coating and fill the gap, guaranteeing high repeatability 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 (Ø45x20), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our store.

The presented product is a neodymium magnet with precisely defined parameters: diameter 45 mm and height 20 mm. The value of 597.79 N means that the magnet is capable of holding a weight many times exceeding its own mass of 238.56 g. The product has a [NiCuNi] coating, which protects the surface against external factors, 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.

Strengths and weaknesses of neodymium magnets.

Benefits

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

They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
They are resistant to demagnetization induced by presence of other magnetic fields,
By covering with a shiny layer of gold, the element gains an elegant look,
They feature high magnetic induction at the operating surface, making them more effective,
Through (adequate) combination of ingredients, they can achieve high thermal strength, allowing for operation at temperatures reaching 230°C and above...
Thanks to freedom in shaping and the ability to adapt to complex applications,
Wide application in high-tech industry – they are commonly used in hard drives, brushless drives, precision medical tools, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Cons

Cons of neodymium magnets: weaknesses and usage proposals

They are prone to damage upon heavy impacts. To avoid cracks, it is worth protecting magnets using a steel holder. Such protection not only shields the magnet but also improves its resistance to damage
Neodymium magnets decrease their force 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 recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
Due to limitations in creating nuts and complicated forms in magnets, we recommend using casing - magnetic mount.
Health risk related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child health protection. Furthermore, tiny parts of these products are able to disrupt the diagnostic process medical when they are in the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

The specified lifting capacity refers to the maximum value, recorded under ideal test conditions, namely:

on a block made of structural steel, perfectly concentrating the magnetic field
whose thickness is min. 10 mm
with a plane cleaned and smooth
with direct contact (without paint)
under perpendicular application of breakaway force (90-degree angle)
at ambient temperature approx. 20 degrees Celsius

Key elements affecting lifting force

In practice, the actual lifting capacity depends on a number of factors, ranked from most significant:

Clearance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
Angle of force application – maximum parameter is obtained only during perpendicular pulling. The resistance to sliding of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of converting into lifting capacity.
Material type – ideal substrate is high-permeability steel. Stainless steels may attract less.
Smoothness – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
Thermal environment – temperature increase results in weakening of induction. Check the maximum operating temperature for a given model.

Lifting capacity was determined using a polished steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the holding force.

Precautions when working with neodymium magnets

Swallowing risk

NdFeB magnets are not toys. Eating several magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.

Dust is flammable

Mechanical processing of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Magnetic media

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

Danger to pacemakers

Health Alert: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Shattering risk

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.

Do not underestimate power

Exercise caution. Rare earth magnets attract from a distance and snap with huge force, often quicker than you can move away.

Nickel allergy

Certain individuals have a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching can result in a rash. We suggest wear safety gloves.

Do not overheat magnets

Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. The loss of strength is permanent.

Phone sensors

GPS units and mobile phones are extremely sensitive to magnetic fields. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Bone fractures

Pinching hazard: The pulling power is so great that it can cause hematomas, pinching, and broken bones. Protective gloves are recommended.

Attention! More info about hazards in the article: Magnet Safety Guide.

MW 45x20 / N38 - cylindrical magnet

Physical properties - MW 45x20 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical modeling of the assembly - report

Table 1: Static force (pull vs distance) - power drop MW 45x20 / N38

Table 2: Shear force (vertical surface) MW 45x20 / N38

Table 3: Wall mounting (sliding) - vertical pull MW 45x20 / N38

Table 4: Material efficiency (saturation) - sheet metal selection MW 45x20 / N38

Table 5: Working in heat (stability) - resistance threshold MW 45x20 / N38

Table 6: Two magnets (repulsion) - field range MW 45x20 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures MW 45x20 / N38

Table 8: Dynamics (cracking risk) - collision effects MW 45x20 / N38

Table 9: Coating parameters (durability) MW 45x20 / N38

Table 10: Construction data (Flux) MW 45x20 / N38

Table 11: Hydrostatics and buoyancy MW 45x20 / N38

1. Vertical hold

2. Steel saturation

3. Temperature resistance

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

Material specification

Sustainability

Force (pull)

Field Strength

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Strengths and weaknesses of neodymium magnets.

Benefits

Cons

Holding force characteristics

Maximum lifting force for a neodymium magnet – what affects it?

Key elements affecting lifting force

Precautions when working with neodymium magnets

Swallowing risk

Dust is flammable

Magnetic media

Danger to pacemakers

Shattering risk

Do not underestimate power

Nickel allergy

Do not overheat magnets

Phone sensors

Bone fractures

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static force (pull vs distance) - power drop
MW 45x20 / N38

Table 2: Shear force (vertical surface)
MW 45x20 / N38

Table 3: Wall mounting (sliding) - vertical pull
MW 45x20 / N38

Table 4: Material efficiency (saturation) - sheet metal selection
MW 45x20 / N38

Table 5: Working in heat (stability) - resistance threshold
MW 45x20 / N38

Table 6: Two magnets (repulsion) - field range
MW 45x20 / N38

Table 7: Safety (HSE) (electronics) - precautionary measures
MW 45x20 / N38

Table 8: Dynamics (cracking risk) - collision effects
MW 45x20 / N38

Table 9: Coating parameters (durability)
MW 45x20 / N38

Table 10: Construction data (Flux)
MW 45x20 / N38

Table 11: Hydrostatics and buoyancy
MW 45x20 / N38