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MW 45x30 / 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 010073

GTIN/EAN: 5906301810728

Diameter Ø

45 mm [±0,1 mm]

Height

30 mm [±0,1 mm]

Weight

357.85 g

Magnetization Direction

↑ axial

Load capacity

69.46 kg / 681.39 N

Magnetic Induction

495.87 mT / 4959 Gs

Coating

[NiCuNi] Nickel

product specifications »

136.80 ZŁ with VAT / pcs + price for transport

111.22 ZŁ net + 23% VAT / pcs

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Contact us by phone +48 22 499 98 98 alternatively drop us a message using form the contact page.
Lifting power as well as appearance of a neodymium magnet can be estimated using our power calculator.

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Physical properties - MW 45x30 / N38 - cylindrical magnet

Specification / characteristics - MW 45x30 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010073
GTIN/EAN	5906301810728
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	30 mm [±0,1 mm]
Weight	357.85 g
Magnetization Direction	↑ axial
Load capacity ~ ?	69.46 kg / 681.39 N
Magnetic Induction ~ ?	495.87 mT / 4959 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 45x30 / 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 assembly - report

The following information represent the outcome of a physical calculation. Results rely on models for the class Nd₂Fe₁₄B. Real-world performance may deviate from the simulation results. Treat these calculations as a supplementary guide for designers.

Table 1: Static pull force (force vs distance) - interaction chart
MW 45x30 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	4958 Gs 495.8 mT	69.46 kg / 153.13 LBS 69460.0 g / 681.4 N	crushing
1 mm	4742 Gs 474.2 mT	63.55 kg / 140.11 LBS 63553.9 g / 623.5 N	crushing
2 mm	4523 Gs 452.3 mT	57.81 kg / 127.44 LBS 57805.8 g / 567.1 N	crushing
3 mm	4303 Gs 430.3 mT	52.33 kg / 115.36 LBS 52327.7 g / 513.3 N	crushing
5 mm	3870 Gs 387.0 mT	42.33 kg / 93.32 LBS 42329.9 g / 415.3 N	crushing
10 mm	2886 Gs 288.6 mT	23.53 kg / 51.88 LBS 23531.8 g / 230.8 N	crushing
15 mm	2106 Gs 210.6 mT	12.54 kg / 27.64 LBS 12537.0 g / 123.0 N	crushing
20 mm	1535 Gs 153.5 mT	6.66 kg / 14.68 LBS 6657.1 g / 65.3 N	medium risk
30 mm	845 Gs 84.5 mT	2.02 kg / 4.45 LBS 2018.9 g / 19.8 N	medium risk
50 mm	315 Gs 31.5 mT	0.28 kg / 0.62 LBS 279.5 g / 2.7 N	safe

Pulling power weakens significantly with every subsequent millimeter of gap. Remember that even the smallest gap (e.g., dirt, varnish, rust) strongly weakens the grip. Neodymiums hold strongest in perfect adhesion; gap weakens the force. See how flashily the parameters plummet, when the magnet does not adhere directly to the metal substrate. When calculating the arrangement, avoid redundant distances.

Table 2: Sliding capacity (vertical surface)
MW 45x30 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	13.89 kg / 30.63 LBS 13892.0 g / 136.3 N
1 mm	Stal (~0.2)	12.71 kg / 28.02 LBS 12710.0 g / 124.7 N
2 mm	Stal (~0.2)	11.56 kg / 25.49 LBS 11562.0 g / 113.4 N
3 mm	Stal (~0.2)	10.47 kg / 23.07 LBS 10466.0 g / 102.7 N
5 mm	Stal (~0.2)	8.47 kg / 18.66 LBS 8466.0 g / 83.1 N
10 mm	Stal (~0.2)	4.71 kg / 10.37 LBS 4706.0 g / 46.2 N
15 mm	Stal (~0.2)	2.51 kg / 5.53 LBS 2508.0 g / 24.6 N
20 mm	Stal (~0.2)	1.33 kg / 2.94 LBS 1332.0 g / 13.1 N
30 mm	Stal (~0.2)	0.40 kg / 0.89 LBS 404.0 g / 4.0 N
50 mm	Stal (~0.2)	0.06 kg / 0.12 LBS 56.0 g / 0.5 N

The table below defines the approximate holding capacity required to cause the downward movement of the magnet downwards along a vertical steel plate (considering standard friction). This parameter is a function of the air gap between the magnet and the surface.

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 45x30 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	20.84 kg / 45.94 LBS 20838.0 g / 204.4 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	13.89 kg / 30.63 LBS 13892.0 g / 136.3 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	6.95 kg / 15.31 LBS 6946.0 g / 68.1 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	34.73 kg / 76.57 LBS 34730.0 g / 340.7 N

When hanging a magnet on a upright plane (e.g., a car body), it will maintain barely approx. 1/5 of its nominal power. Gravitational force as well as a low friction coefficient influence the fact that magnets slip faster than they detach. Designing a hanger? Consider that the sliding force is significantly lower than the maximum static pull force. On a painted metal, the element will slip down under a significantly smaller load. Using a rubber coating can drastically raise the stability.

Table 4: Material efficiency (substrate influence) - power losses
MW 45x30 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	3%	2.32 kg / 5.10 LBS 2315.3 g / 22.7 N
1 mm	8%	5.79 kg / 12.76 LBS 5788.3 g / 56.8 N
2 mm	17%	11.58 kg / 25.52 LBS 11576.7 g / 113.6 N
3 mm	25%	17.37 kg / 38.28 LBS 17365.0 g / 170.4 N
5 mm	42%	28.94 kg / 63.81 LBS 28941.7 g / 283.9 N
10 mm	83%	57.88 kg / 127.61 LBS 57883.3 g / 567.8 N
11 mm	92%	63.67 kg / 140.37 LBS 63671.7 g / 624.6 N
12 mm	100%	69.46 kg / 153.13 LBS 69460.0 g / 681.4 N

A thin sheet is incapable of focus the full magnetic flux, which squanders power of the magnet. If you attach a powerful product to a weak sheet, the field will penetrate right through and the holding will be smaller. To utilize 100% of this magnet's power, you need a suitably thick element of metal. The saturation phenomenon causes that on thin elements (e.g., thin profiles), the product holds weaker. We suggest choosing the steel cross-section according to the table below.

Table 5: Working in heat (stability) - resistance threshold
MW 45x30 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	69.46 kg / 153.13 LBS 69460.0 g / 681.4 N	OK
40 °C	-2.2%	67.93 kg / 149.76 LBS 67931.9 g / 666.4 N	OK
60 °C	-4.4%	66.40 kg / 146.40 LBS 66403.8 g / 651.4 N	OK
80 °C	-6.6%	64.88 kg / 143.03 LBS 64875.6 g / 636.4 N
100 °C	-28.8%	49.46 kg / 109.03 LBS 49455.5 g / 485.2 N

Classic neodymiums irreversibly lose strength after exceeding the maximum temperature. Watch out for overheating – high temperature can irreversibly destroy this product. As the temperature rises, the neodymium's force temporarily lowers. Refrain from using this magnet close to ovens higher than its operating temperature limit. Exceeding the critical threshold will cause permanent loss of magnetic properties.

*Important note: Thermal stability depends not only on the material grade, and the Permeance Coefficient Pc. Flat magnets (low permeance coefficient) may lose charge permanently at lower temperatures than long magnets. Warning indicator in the table indicates permanent field degradation for this specific geometry.

Table 6: Two magnets (attraction) - field collision
MW 45x30 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Strength (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	241.01 kg / 531.33 LBS 5 803 Gs	36.15 kg / 79.70 LBS 36151 g / 354.6 N	N/A
1 mm	230.79 kg / 508.80 LBS 9 703 Gs	34.62 kg / 76.32 LBS 34618 g / 339.6 N	207.71 kg / 457.92 LBS ~0 Gs
2 mm	220.52 kg / 486.16 LBS 9 485 Gs	33.08 kg / 72.92 LBS 33078 g / 324.5 N	198.47 kg / 437.54 LBS ~0 Gs
3 mm	210.44 kg / 463.94 LBS 9 265 Gs	31.57 kg / 69.59 LBS 31566 g / 309.7 N	189.39 kg / 417.54 LBS ~0 Gs
5 mm	190.94 kg / 420.95 LBS 8 826 Gs	28.64 kg / 63.14 LBS 28641 g / 281.0 N	171.85 kg / 378.86 LBS ~0 Gs
10 mm	146.87 kg / 323.80 LBS 7 741 Gs	22.03 kg / 48.57 LBS 22031 g / 216.1 N	132.19 kg / 291.42 LBS ~0 Gs
20 mm	81.65 kg / 180.01 LBS 5 771 Gs	12.25 kg / 27.00 LBS 12247 g / 120.1 N	73.48 kg / 162.01 LBS ~0 Gs
50 mm	12.52 kg / 27.60 LBS 2 260 Gs	1.88 kg / 4.14 LBS 1878 g / 18.4 N	11.27 kg / 24.84 LBS ~0 Gs
60 mm	7.01 kg / 15.44 LBS 1 690 Gs	1.05 kg / 2.32 LBS 1051 g / 10.3 N	6.30 kg / 13.90 LBS ~0 Gs
70 mm	4.06 kg / 8.95 LBS 1 287 Gs	0.61 kg / 1.34 LBS 609 g / 6.0 N	3.66 kg / 8.06 LBS ~0 Gs
80 mm	2.44 kg / 5.38 LBS 998 Gs	0.37 kg / 0.81 LBS 366 g / 3.6 N	2.20 kg / 4.84 LBS ~0 Gs
90 mm	1.51 kg / 3.34 LBS 786 Gs	0.23 kg / 0.50 LBS 227 g / 2.2 N	1.36 kg / 3.01 LBS ~0 Gs
100 mm	0.97 kg / 2.14 LBS 629 Gs	0.15 kg / 0.32 LBS 145 g / 1.4 N	0.87 kg / 1.92 LBS ~0 Gs

Two magnetic products interact from a wider radius than a magnet and sheet setup. Such a system of magnet-to-magnet generates a stronger field and a further horizon of action. Want to build a solid fastener? Apply two magnets instead of a neodymium and a steel. Be careful that when attracting two neodymiums, the impact force is massive. The levitation is slightly lower than the connection force, but still large.
*Flux density between like poles is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Important: Results demonstrate shear force of a pair of matching neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Safety (HSE) (implants) - warnings
MW 45x30 / N38

Object / Device	Limit (Gauss) / mT	Safe distance
Pacemaker	5 Gs (0.5 mT)	25.5 cm
Hearing aid	10 Gs (1.0 mT)	20.0 cm
Timepiece	20 Gs (2.0 mT)	15.5 cm
Phone / Smartphone	40 Gs (4.0 mT)	12.0 cm
Remote	50 Gs (5.0 mT)	11.0 cm
Payment card	400 Gs (40.0 mT)	4.5 cm
HDD hard drive	600 Gs (60.0 mT)	4.0 cm

Extremely neodym field poses a real danger to electronic devices as well as pacemakers. These neodymiums produce a field that prevents correct functioning of digital equipment. Remember: the unseen radiation acts through matter and plastic. Special caution must be taken by people with hearing aids and drug dispensers. Influence will be felt by: mechanical watches, remotes, membranes, and screens. Avoid contact with magnetic cards, hard drives, or sensitive navigation tools.

Table 8: Impact energy (kinetic energy) - warning
MW 45x30 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	16.76 km/h (4.66 m/s)	3.88 J
30 mm	24.77 km/h (6.88 m/s)	8.47 J
50 mm	31.50 km/h (8.75 m/s)	13.70 J
100 mm	44.44 km/h (12.34 m/s)	27.26 J

Magnetic elements are very brittle – a collision with steel causes immediate chipping. Watch the impact speed – 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 bringing near metal so it doesn't hit with great force against the steel surface. A collision at high speed ends with a crack of the magnet. Wear safety glasses when playing with powerful specimens.

Table 9: Surface protection spec
MW 45x30 / 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. Moisture resistance is crucial for installations in bathrooms or outdoors.

Table 10: Construction data (P_c)
MW 45x30 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	79 446 Mx	794.5 µWb
P_c Coefficient	0.71	High (Stable)

Total magnetic flux passing through the pole surface. Key data in coil applications and motors. The P_c coefficient determines the magnet's operating point.

Table 11: Hydrostatics and buoyancy
MW 45x30 / N38

Environment	Effective steel pull	Effect
Air (land)	69.46 kg	Standard
Water (riverbed)	79.53 kg (+10.07 kg buoyancy gain)	+14.5%

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

The magnetic field penetrates through water without any losses. However, remember the water resistance when pulling the rope quickly.

1. Sliding resistance

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

2. Plate thickness effect

*Thin steel (e.g. computer case) significantly limits the holding force.

3. Temperature resistance

*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) = 0.71

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 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%

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: 010073-2026

Measurement Calculator

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MW 12x8 / N38 - cylindrical magnet

2.47 ZŁ brutto / pcs

The presented product is a very strong rod magnet, composed of advanced NdFeB material, which, with dimensions of Ø45x30 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 69.46 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Additionally, its triple-layer Ni-Cu-Ni coating effectively protects it against corrosion in standard operating conditions, guaranteeing 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 high power of 681.39 N with a weight of only 357.85 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 professional component. To ensure long-term durability in industry, anaerobic resins are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.

Magnets N38 are suitable for the majority of applications in modeling and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø45x30), 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 Ø45x30 mm, which, at a weight of 357.85 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 69.46 kg (force ~681.39 N), which, with such compact dimensions, proves the high power of the NdFeB material. The product has a [NiCuNi] coating, which secures it against oxidation, giving it an aesthetic, silvery shine.

This cylinder is magnetized axially (along the height of 30 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.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:

They retain attractive force for almost ten years – the drop is just ~1% (in theory),
They are extremely resistant to demagnetization induced by presence of other magnetic fields,
Thanks to the shimmering finish, the layer of nickel, gold, or silver-plated gives an aesthetic appearance,
Magnets have extremely high magnetic induction on the outer layer,
Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures approaching 230°C and above...
Possibility of custom modeling as well as adjusting to concrete needs,
Universal use in modern industrial fields – they are used in computer drives, drive modules, advanced medical instruments, as well as technologically advanced constructions.
Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Cons

Drawbacks and weaknesses of neodymium magnets: weaknesses and usage proposals

At very strong impacts they can break, therefore we recommend 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 force. Therefore, we recommend our special magnets marked [AH], which maintain stability 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 ability of creating threads in the magnet and complicated forms - preferred is a housing - mounting mechanism.
Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Additionally, small elements of these magnets can be problematic in diagnostics medical after entering the body.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

The force parameter is a measurement result executed under specific, ideal conditions:

using a base made of low-carbon steel, functioning as a ideal flux conductor
whose transverse dimension is min. 10 mm
characterized by lack of roughness
without any air gap between the magnet and steel
under perpendicular force vector (90-degree angle)
at temperature approx. 20 degrees Celsius

What influences lifting capacity in practice

During everyday use, the real power results from many variables, listed from most significant:

Clearance – the presence of foreign body (paint, dirt, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (often approx. 20-30% of nominal force).
Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
Steel grade – ideal substrate is high-permeability steel. Stainless steels may have worse magnetic properties.
Smoothness – full contact is obtained only on polished steel. Rough texture reduce the real contact area, reducing force.
Temperature – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, in contrast under shearing force the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate decreases the holding force.

H&S for magnets

Magnets are brittle

NdFeB magnets are ceramic materials, meaning they are very brittle. Clashing of two magnets leads to them cracking into small pieces.

Power loss in heat

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

Medical implants

Medical warning: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Machining danger

Drilling and cutting of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Threat to electronics

Avoid bringing magnets close to a purse, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.

Handling rules

Be careful. Neodymium magnets attract from a distance and connect with huge force, often faster than you can move away.

Precision electronics

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

Crushing force

Mind your fingers. Two large magnets will snap together immediately with a force of massive weight, crushing anything in their path. Be careful!

Danger to the youngest

Adult use only. Small elements pose a choking risk, causing intestinal necrosis. Keep away from children and animals.

Warning for allergy sufferers

Some people suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching might lead to an allergic reaction. We strongly advise wear protective gloves.

Safety First! Details about hazards in the article: Safety of working with magnets.

MW 45x30 / N38 - cylindrical magnet

Physical properties - MW 45x30 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Technical simulation of the assembly - report

Table 1: Static pull force (force vs distance) - interaction chart MW 45x30 / N38

Table 2: Sliding capacity (vertical surface) MW 45x30 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces MW 45x30 / N38

Table 4: Material efficiency (substrate influence) - power losses MW 45x30 / N38

Table 5: Working in heat (stability) - resistance threshold MW 45x30 / N38

Table 6: Two magnets (attraction) - field collision MW 45x30 / N38

Table 7: Safety (HSE) (implants) - warnings MW 45x30 / N38

Table 8: Impact energy (kinetic energy) - warning MW 45x30 / N38

Table 9: Surface protection spec MW 45x30 / N38

Table 10: Construction data (Pc) MW 45x30 / N38

Table 11: Hydrostatics and buoyancy MW 45x30 / N38

1. Sliding resistance

2. Plate thickness effect

3. Temperature resistance

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

Material specification

Environmental data

Force (pull)

Field Strength

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SM 25x150 [2xM8] / N52 - magnetic separator

MW 12x8 / N38 - cylindrical magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Pros

Cons

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

What influences lifting capacity in practice

H&S for magnets

Magnets are brittle

Power loss in heat

Medical implants

Machining danger

Threat to electronics

Handling rules

Precision electronics

Crushing force

Danger to the youngest

Warning for allergy sufferers

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (force vs distance) - interaction chart
MW 45x30 / N38

Table 2: Sliding capacity (vertical surface)
MW 45x30 / N38

Table 3: Vertical assembly (shearing) - behavior on slippery surfaces
MW 45x30 / N38

Table 4: Material efficiency (substrate influence) - power losses
MW 45x30 / N38

Table 5: Working in heat (stability) - resistance threshold
MW 45x30 / N38

Table 6: Two magnets (attraction) - field collision
MW 45x30 / N38

Table 7: Safety (HSE) (implants) - warnings
MW 45x30 / N38

Table 8: Impact energy (kinetic energy) - warning
MW 45x30 / N38

Table 9: Surface protection spec
MW 45x30 / N38

Table 10: Construction data (P_c)
MW 45x30 / N38

Table 11: Hydrostatics and buoyancy
MW 45x30 / N38

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.