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MW 28.9x10 / 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 010051

GTIN/EAN: 5906301810506

Diameter Ø

28.9 mm [±0,1 mm]

Height

10 mm [±0,1 mm]

Weight

49.2 g

Magnetization Direction

→ diametrical

Load capacity

20.74 kg / 203.46 N

Magnetic Induction

352.70 mT / 3527 Gs

Coating

[NiCuNi] Nickel

technical specifications »

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Technical parameters of the product - MW 28.9x10 / N38 - cylindrical magnet

Specification / characteristics - MW 28.9x10 / N38 - cylindrical magnet

properties

properties	values
Cat. no.	010051
GTIN/EAN	5906301810506
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	28.9 mm [±0,1 mm]
Height	10 mm [±0,1 mm]
Weight	49.2 g
Magnetization Direction	→ diametrical
Load capacity ~ ?	20.74 kg / 203.46 N
Magnetic Induction ~ ?	352.70 mT / 3527 Gs
Coating	[NiCuNi] Nickel
Manufacturing Tolerance	±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 28.9x10 / 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 analysis of the assembly - technical parameters

The following information represent the result of a engineering calculation. Results rely on models for the material Nd₂Fe₁₄B. Real-world performance may differ from theoretical values. Treat these data as a reference point when designing systems.

Table 1: Static pull force (pull vs gap) - power drop
MW 28.9x10 / N38

Distance (mm)	Induction (Gauss) / mT	Pull Force (kg/lbs/g/N)	Risk Status
0 mm	3526 Gs 352.6 mT	20.74 kg / 45.72 LBS 20740.0 g / 203.5 N	dangerous!
1 mm	3327 Gs 332.7 mT	18.47 kg / 40.71 LBS 18466.2 g / 181.2 N	dangerous!
2 mm	3111 Gs 311.1 mT	16.14 kg / 35.59 LBS 16142.6 g / 158.4 N	dangerous!
3 mm	2886 Gs 288.6 mT	13.90 kg / 30.63 LBS 13895.8 g / 136.3 N	dangerous!
5 mm	2438 Gs 243.8 mT	9.91 kg / 21.85 LBS 9912.0 g / 97.2 N	medium risk
10 mm	1497 Gs 149.7 mT	3.74 kg / 8.24 LBS 3739.6 g / 36.7 N	medium risk
15 mm	903 Gs 90.3 mT	1.36 kg / 3.00 LBS 1359.1 g / 13.3 N	low risk
20 mm	560 Gs 56.0 mT	0.52 kg / 1.15 LBS 523.5 g / 5.1 N	low risk
30 mm	245 Gs 24.5 mT	0.10 kg / 0.22 LBS 100.4 g / 1.0 N	low risk
50 mm	71 Gs 7.1 mT	0.01 kg / 0.02 LBS 8.5 g / 0.1 N	low risk

Grip strength weakens significantly per each millimeter of gap. Keep in mind that even a very thin break (e.g., dirt, paint, dust) significantly diminishes the holding power. Magnets hold optimally at the point of direct contact; gap kills the power. Analyze how quickly the pull force drop, when the product does not touch directly to the steel surface. When planning the mounting, avoid additional spacers.

Table 2: Sliding load (vertical surface)
MW 28.9x10 / N38

Distance (mm)	Friction coefficient	Pull Force (kg/lbs/g/N)
0 mm	Stal (~0.2)	4.15 kg / 9.14 LBS 4148.0 g / 40.7 N
1 mm	Stal (~0.2)	3.69 kg / 8.14 LBS 3694.0 g / 36.2 N
2 mm	Stal (~0.2)	3.23 kg / 7.12 LBS 3228.0 g / 31.7 N
3 mm	Stal (~0.2)	2.78 kg / 6.13 LBS 2780.0 g / 27.3 N
5 mm	Stal (~0.2)	1.98 kg / 4.37 LBS 1982.0 g / 19.4 N
10 mm	Stal (~0.2)	0.75 kg / 1.65 LBS 748.0 g / 7.3 N
15 mm	Stal (~0.2)	0.27 kg / 0.60 LBS 272.0 g / 2.7 N
20 mm	Stal (~0.2)	0.10 kg / 0.23 LBS 104.0 g / 1.0 N
30 mm	Stal (~0.2)	0.02 kg / 0.04 LBS 20.0 g / 0.2 N
50 mm	Stal (~0.2)	0.00 kg / 0.00 LBS 2.0 g / 0.0 N

The following data indicates the approximate holding capacity required to start the slippage of the magnet downwards along a upright metal surface (assuming standard friction). This value is relative to the distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - vertical pull
MW 28.9x10 / N38

Surface type	Friction coefficient / % Mocy	Max load (kg/lbs/g/N)
Raw steel	µ = 0.3 30% Nominalnej Siły	6.22 kg / 13.72 LBS 6222.0 g / 61.0 N
Painted steel (standard)	µ = 0.2 20% Nominalnej Siły	4.15 kg / 9.14 LBS 4148.0 g / 40.7 N
Oily/slippery steel	µ = 0.1 10% Nominalnej Siły	2.07 kg / 4.57 LBS 2074.0 g / 20.3 N
Magnet with anti-slip rubber	µ = 0.5 50% Nominalnej Siły	10.37 kg / 22.86 LBS 10370.0 g / 101.7 N

When placing a element on a upright surface (e.g., a fridge), it will maintain just approx. 20%-30% of its maximum pull force. Gravitational force and a low friction coefficient cause that magnets move down faster than they pop off the substrate. Want to create a vertical fastening? Consider that the sliding force is significantly lower than the perpendicular breakaway force. On a painted metal, the magnet will give way down under a much lighter weight. Utilizing a rubberized coating can drastically raise the stability.

Table 4: Material efficiency (saturation) - power losses
MW 28.9x10 / N38

Steel thickness (mm)	% power	Real pull force (kg/lbs/g/N)
0.5 mm	5%	1.04 kg / 2.29 LBS 1037.0 g / 10.2 N
1 mm	13%	2.59 kg / 5.72 LBS 2592.5 g / 25.4 N
2 mm	25%	5.19 kg / 11.43 LBS 5185.0 g / 50.9 N
3 mm	38%	7.78 kg / 17.15 LBS 7777.5 g / 76.3 N
5 mm	63%	12.96 kg / 28.58 LBS 12962.5 g / 127.2 N
10 mm	100%	20.74 kg / 45.72 LBS 20740.0 g / 203.5 N
11 mm	100%	20.74 kg / 45.72 LBS 20740.0 g / 203.5 N
12 mm	100%	20.74 kg / 45.72 LBS 20740.0 g / 203.5 N

A thin metal plate is incapable of focus the entire magnetic field, which wastes potential of the holder. If you mount a strong magnet to a thin surface, the magnetism will pass right through and the pull force will drop sharply. To achieve full efficiency of this neodymium's power, you need a suitably thick element of steel. The saturation phenomenon means that on sheet metal structures (e.g., thin profiles), the magnet shows lower pull force. We recommend selecting the steel cross-section based on the following data.

Table 5: Working in heat (material behavior) - thermal limit
MW 28.9x10 / N38

Ambient temp. (°C)	Power loss	Remaining pull (kg/lbs/g/N)	Status
20 °C	0.0%	20.74 kg / 45.72 LBS 20740.0 g / 203.5 N	OK
40 °C	-2.2%	20.28 kg / 44.72 LBS 20283.7 g / 199.0 N	OK
60 °C	-4.4%	19.83 kg / 43.71 LBS 19827.4 g / 194.5 N
80 °C	-6.6%	19.37 kg / 42.71 LBS 19371.2 g / 190.0 N
100 °C	-28.8%	14.77 kg / 32.56 LBS 14766.9 g / 144.9 N

Ordinary NdFeB products change their properties parameters above the temperature limit. Protect against heat – excessive heat can irreversibly destroy this magnet. With increasing heat, the magnet's capacity temporarily lowers. Do not use this product in hot environments exceeding its safe range. Exceeding the critical threshold will result in destruction of magnetic properties.

*Engineering note: Temperature resistance depends not only on the material grade, but also on the magnet's shape. Thin magnets (low permeance coefficient) may lose charge permanently under lower heat stress than taller cylinders. Warning indicator in the table points to a risk of irreversible loss for this particular item.

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 28.9x10 / N38

Gap (mm)	Attraction (kg/lbs) (N-S)	Shear Force (kg/lbs/g/N)	Repulsion (kg/lbs) (N-N)
0 mm	50.29 kg / 110.86 LBS 5 022 Gs	7.54 kg / 16.63 LBS 7543 g / 74.0 N	N/A
1 mm	47.58 kg / 104.90 LBS 6 860 Gs	7.14 kg / 15.74 LBS 7138 g / 70.0 N	42.83 kg / 94.41 LBS ~0 Gs
2 mm	44.77 kg / 98.71 LBS 6 655 Gs	6.72 kg / 14.81 LBS 6716 g / 65.9 N	40.30 kg / 88.84 LBS ~0 Gs
3 mm	41.95 kg / 92.48 LBS 6 441 Gs	6.29 kg / 13.87 LBS 6292 g / 61.7 N	37.75 kg / 83.23 LBS ~0 Gs
5 mm	36.38 kg / 80.20 LBS 5 999 Gs	5.46 kg / 12.03 LBS 5457 g / 53.5 N	32.74 kg / 72.18 LBS ~0 Gs
10 mm	24.03 kg / 52.98 LBS 4 876 Gs	3.60 kg / 7.95 LBS 3605 g / 35.4 N	21.63 kg / 47.69 LBS ~0 Gs
20 mm	9.07 kg / 19.99 LBS 2 995 Gs	1.36 kg / 3.00 LBS 1360 g / 13.3 N	8.16 kg / 17.99 LBS ~0 Gs
50 mm	0.53 kg / 1.17 LBS 726 Gs	0.08 kg / 0.18 LBS 80 g / 0.8 N	0.48 kg / 1.06 LBS ~0 Gs
60 mm	0.24 kg / 0.54 LBS 491 Gs	0.04 kg / 0.08 LBS 37 g / 0.4 N	0.22 kg / 0.48 LBS ~0 Gs
70 mm	0.12 kg / 0.26 LBS 345 Gs	0.02 kg / 0.04 LBS 18 g / 0.2 N	0.11 kg / 0.24 LBS ~0 Gs
80 mm	0.06 kg / 0.14 LBS 250 Gs	0.01 kg / 0.02 LBS 9 g / 0.1 N	0.06 kg / 0.13 LBS ~0 Gs
90 mm	0.04 kg / 0.08 LBS 187 Gs	0.01 kg / 0.01 LBS 5 g / 0.1 N	0.03 kg / 0.07 LBS ~0 Gs
100 mm	0.02 kg / 0.05 LBS 143 Gs	0.00 kg / 0.01 LBS 3 g / 0.0 N	0.02 kg / 0.04 LBS ~0 Gs

Two magnets attract each other from a much further distance than a magnet and sheet setup. Such a system of magnet-to-magnet creates a more powerful interaction and a larger range of performance. Designing a solid fastener? Use a pair of magnets instead of a neodymium and a striker plate. Remember that when bringing together two magnets, the pinch force is huge. The repulsion force is a bit weaker than the attraction, but still large.
*Flux density in repulsion mode reaches ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
Important: Results refer to friction force of dual matching magnets (friction ~0.15 for Ni-Ni plating).

Table 7: Protective zones (implants) - warnings
MW 28.9x10 / N38

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

Extremely neodym field poses a real danger to IT equipment as well as medical implants. These neodymiums generate a flux that disrupts operation of digital equipment. Notice: the invisible magnetic field penetrates the body and glass. Special caution must be taken by people with cochlear implants and insulin pumps. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Do not place the magnet near cards, hard drives, or precise measuring instruments.

Table 8: Collisions (cracking risk) - warning
MW 28.9x10 / N38

Start from (mm)	Speed (km/h)	Energy (J)
10 mm	22.92 km/h (6.37 m/s)	1.00 J
30 mm	35.97 km/h (9.99 m/s)	2.46 J
50 mm	46.31 km/h (12.86 m/s)	4.07 J
100 mm	65.48 km/h (18.19 m/s)	8.14 J

NdFeB products are very brittle – a violent impact against metal causes immediate chipping. Control the attraction moment – a neodymium left loose becomes dangerous. Striking energy can cause material chips or painful pinches to skin. Be sure to control the product during bringing near metal so it doesn't hit violently against the metal. A collision at high speed means shattering of the neodymium. Wear safety glasses when working with large magnets.

Table 9: Corrosion resistance
MW 28.9x10 / 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 SST (salt spray test) is an industry standard for determining coating lifespan in harsh conditions. Note the thickness of the protective layer.

Table 10: Construction data (Flux)
MW 28.9x10 / N38

Parameter	Value	SI Unit / Description
Magnetic Flux	24 347 Mx	243.5 µWb
P_c Coefficient	0.45	Low (Flat)

Flux value emitted by the pole surface. Essential parameter when building generators and motors. P_c value defines the working geometry.

Table 11: Submerged application
MW 28.9x10 / N38

Environment	Effective steel pull	Effect
Air (land)	20.74 kg	Standard
Water (riverbed)	23.75 kg (+3.01 kg buoyancy gain)	+14.5%

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

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

1. Vertical hold

*Note: On a vertical wall, the magnet holds only ~20% of its max power.

2. Plate thickness effect

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

3. Temperature resistance

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

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

chart generated for the permeance coefficient P_c (Permeance Coefficient) = 0.45

The chart above illustrates the magnetic characteristics of the material within the second quadrant of the hysteresis loop. The solid red line represents the demagnetization curve (material potential), while the dashed blue line is the load line based on the magnet's geometry. The P_c (Permeance Coefficient), also known as the load line slope, is a dimensionless value that describes the relationship between the magnet's shape and its magnetic stability. The intersection of these two lines (the black dot) is the operating point — it determines the actual magnetic flux density generated by the magnet in this specific configuration. A higher P_c value means the magnet is more 'slender' (tall relative to its area), resulting in a higher operating point and better resistance to irreversible demagnetization caused by external fields or temperature. A value of 0.42 is relatively low (typical for flat magnets), meaning the operating point is closer to the 'knee' of the curve — caution is advised when operating at temperatures near the maximum limit to avoid strength loss.

Technical specification and ecology

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: 010051-2026

Magnet Unit Converter

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Input your value in just one slot to see the conversion for all other fields at once.

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The offered product is an extremely powerful cylindrical magnet, produced from modern NdFeB material, which, at dimensions of Ø28.9x10 mm, guarantees maximum efficiency. This specific item features a tolerance of ±0.1mm and professional build quality, making it an ideal solution for professional engineers and designers. As a cylindrical magnet with significant force (approx. 20.74 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Moreover, 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 generators, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 203.46 N with a weight of only 49.2 g, this rod is indispensable in electronics and wherever every gram matters.

Due to the delicate structure of the ceramic sinter, we absolutely advise against force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in automation, anaerobic resins are used, which do not react with the nickel coating and fill the gap, guaranteeing durability of the connection.

Magnets NdFeB grade N38 are strong enough for 90% of applications in automation and machine building, where excessive miniaturization with maximum force is not required. If you need the strongest magnets in the same volume (Ø28.9x10), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard in continuous sale in our warehouse.

This model is characterized by dimensions Ø28.9x10 mm, which, at a weight of 49.2 g, makes it an element with impressive magnetic energy density. The key parameter here is the holding force amounting to approximately 20.74 kg (force ~203.46 N), which, with such compact dimensions, proves the high grade 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 10 mm), which means that the N and S poles are located on the flat, circular surfaces. Such an arrangement is most desirable when connecting magnets in stacks (e.g., in filters) or when mounting in sockets at the bottom of a hole. On request, we can also produce versions magnetized through the diameter if your project requires it.

Pros as well as cons of rare earth magnets.

Advantages

In addition to their magnetic efficiency, neodymium magnets provide the following advantages:

Their strength is maintained, and after approximately ten years it decreases only by ~1% (according to research),
They are resistant to demagnetization induced by presence of other magnetic fields,
In other words, due to the reflective finish of nickel, the element becomes visually attractive,
The surface of neodymium magnets generates a strong magnetic field – this is a distinguishing feature,
Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
Thanks to flexibility in designing and the ability to adapt to individual projects,
Wide application in high-tech industry – they are commonly used in magnetic memories, brushless drives, medical devices, as well as multitasking production systems.
Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which makes them useful in compact constructions

Weaknesses

Drawbacks and weaknesses of neodymium magnets and ways of using them

At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
Limited possibility of making threads in the magnet and complicated forms - preferred is casing - magnetic holder.
Possible danger related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child health protection. It is also worth noting that small components of these devices can complicate diagnosis medical in case of swallowing.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

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

Breakaway force is the result of a measurement for ideal contact conditions, assuming:

with the application of a sheet made of special test steel, ensuring full magnetic saturation
with a cross-section minimum 10 mm
characterized by even structure
without any insulating layer between the magnet and steel
under perpendicular application of breakaway force (90-degree angle)
at conditions approx. 20°C

Lifting capacity in real conditions – factors

Real force impacted by working environment parameters, mainly (from priority):

Clearance – the presence of any layer (paint, tape, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
Angle of force application – highest force is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is usually many times smaller (approx. 1/5 of the lifting capacity).
Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
Plate material – mild steel attracts best. Higher carbon content reduce magnetic properties and holding force.
Surface finish – full contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
Temperature – temperature increase results in weakening of induction. Check the thermal limit for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Safe handling of neodymium magnets

Handling rules

Before use, read the rules. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Data carriers

Powerful magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.

Shattering risk

Watch out for shards. Magnets can explode upon violent connection, ejecting shards into the air. We recommend safety glasses.

Nickel allergy

Warning for allergy sufferers: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction happens, cease working with magnets and wear gloves.

Bodily injuries

Danger of trauma: The attraction force is so great that it can result in hematomas, crushing, and even bone fractures. Protective gloves are recommended.

Medical implants

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

Fire warning

Dust generated during grinding of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.

Threat to navigation

Navigation devices and smartphones are highly sensitive to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.

This is not a toy

Absolutely store magnets out of reach of children. Choking hazard is high, and the consequences of magnets connecting inside the body are very dangerous.

Heat sensitivity

Do not overheat. NdFeB magnets are sensitive to temperature. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).

Attention! More info about hazards in the article: Safety of working with magnets.

MW 28.9x10 / N38 - cylindrical magnet

Technical parameters of the product - MW 28.9x10 / N38 - cylindrical magnet

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Physical analysis of the assembly - technical parameters

Table 1: Static pull force (pull vs gap) - power drop MW 28.9x10 / N38

Table 2: Sliding load (vertical surface) MW 28.9x10 / N38

Table 3: Wall mounting (shearing) - vertical pull MW 28.9x10 / N38

Table 4: Material efficiency (saturation) - power losses MW 28.9x10 / N38

Table 5: Working in heat (material behavior) - thermal limit MW 28.9x10 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system MW 28.9x10 / N38

Table 7: Protective zones (implants) - warnings MW 28.9x10 / N38

Table 8: Collisions (cracking risk) - warning MW 28.9x10 / N38

Table 9: Corrosion resistance MW 28.9x10 / N38

Table 10: Construction data (Flux) MW 28.9x10 / N38

Table 11: Submerged application MW 28.9x10 / N38

1. Vertical hold

2. Plate thickness effect

3. Temperature resistance

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

Elemental analysis

Environmental data

Pulling force

Field Strength

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SM 32x375 [2xM8] / N42 - magnetic separator

MW 70x20 / N38 - cylindrical magnet

MPL 50x50x25 / N38 - lamellar magnet

Pros as well as cons of rare earth magnets.

Advantages

Weaknesses

Pull force analysis

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

Lifting capacity in real conditions – factors

Safe handling of neodymium magnets

Handling rules

Data carriers

Shattering risk

Nickel allergy

Bodily injuries

Medical implants

Fire warning

Threat to navigation

This is not a toy

Heat sensitivity

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Table 1: Static pull force (pull vs gap) - power drop
MW 28.9x10 / N38

Table 2: Sliding load (vertical surface)
MW 28.9x10 / N38

Table 3: Wall mounting (shearing) - vertical pull
MW 28.9x10 / N38

Table 4: Material efficiency (saturation) - power losses
MW 28.9x10 / N38

Table 5: Working in heat (material behavior) - thermal limit
MW 28.9x10 / N38

Table 6: Magnet-Magnet interaction (attraction) - forces in the system
MW 28.9x10 / N38

Table 7: Protective zones (implants) - warnings
MW 28.9x10 / N38

Table 8: Collisions (cracking risk) - warning
MW 28.9x10 / N38

Table 9: Corrosion resistance
MW 28.9x10 / N38

Table 10: Construction data (Flux)
MW 28.9x10 / N38

Table 11: Submerged application
MW 28.9x10 / N38