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MW 35x5 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010059

GTIN/EAN: 5906301810582

5.00

Diameter Ø

35 mm [±0,1 mm]

Height

5 mm [±0,1 mm]

Weight

36.08 g

Magnetization Direction

↑ axial

Load capacity

9.25 kg / 90.73 N

Magnetic Induction

170.30 mT / 1703 Gs

Coating

[NiCuNi] Nickel

check specifications »

13.81 ZŁ with VAT / pcs + price for transport

11.23 ZŁ net + 23% VAT / pcs

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Technical details - MW 35x5 / N38 - cylindrical magnet

Specification / characteristics - MW 35x5 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010059
GTIN/EAN 5906301810582
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 35 mm [±0,1 mm]
Height 5 mm [±0,1 mm]
Weight 36.08 g
Magnetization Direction ↑ axial
Load capacity ~ ? 9.25 kg / 90.73 N
Magnetic Induction ~ ? 170.30 mT / 1703 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 35x5 / 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

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 simulation of the magnet - technical parameters

These data are the outcome of a engineering calculation. Results are based on algorithms for the class Nd2Fe14B. Real-world parameters may deviate from the simulation results. Treat these calculations as a preliminary roadmap during assembly planning.

Table 1: Static force (pull vs gap) - characteristics
MW 35x5 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1703 Gs
170.3 mT
 9.25 kg / 20.39 lbs
9250.0 g / 90.7 N
 medium risk
1 mm 1657 Gs
165.7 mT
 8.76 kg / 19.31 lbs
8759.4 g / 85.9 N
 medium risk
2 mm 1599 Gs
159.9 mT
 8.15 kg / 17.97 lbs
8152.2 g / 80.0 N
 medium risk
3 mm 1530 Gs
153.0 mT
 7.47 kg / 16.47 lbs
7468.5 g / 73.3 N
 medium risk
5 mm 1373 Gs
137.3 mT
 6.01 kg / 13.25 lbs
6011.5 g / 59.0 N
 medium risk
10 mm 959 Gs
95.9 mT
 2.93 kg / 6.47 lbs
2932.7 g / 28.8 N
 medium risk
15 mm 631 Gs
63.1 mT
 1.27 kg / 2.80 lbs
1270.4 g / 12.5 N
 weak grip
20 mm 413 Gs
41.3 mT
 0.54 kg / 1.20 lbs
544.8 g / 5.3 N
 weak grip
30 mm 190 Gs
19.0 mT
 0.12 kg / 0.25 lbs
115.2 g / 1.1 N
 weak grip
50 mm 56 Gs
5.6 mT
 0.01 kg / 0.02 lbs
10.1 g / 0.1 N
 weak grip
Grip strength weakens significantly with every mm of gap. Keep in mind that even a very thin break (e.g., dirt, varnish, dust) significantly reduces the pull force. Magnetic products operate optimally during direct contact; air break drastically cuts the power. See how quickly the pull force fall, when the product does not touch flatly to the metal substrate. When calculating the arrangement, discard unnecessary gaps.

Table 2: Slippage force (vertical surface)
MW 35x5 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 1.85 kg / 4.08 lbs
1850.0 g / 18.1 N
1 mm Stal (~0.2) 1.75 kg / 3.86 lbs
1752.0 g / 17.2 N
2 mm Stal (~0.2) 1.63 kg / 3.59 lbs
1630.0 g / 16.0 N
3 mm Stal (~0.2) 1.49 kg / 3.29 lbs
1494.0 g / 14.7 N
5 mm Stal (~0.2) 1.20 kg / 2.65 lbs
1202.0 g / 11.8 N
10 mm Stal (~0.2) 0.59 kg / 1.29 lbs
586.0 g / 5.7 N
15 mm Stal (~0.2) 0.25 kg / 0.56 lbs
254.0 g / 2.5 N
20 mm Stal (~0.2) 0.11 kg / 0.24 lbs
108.0 g / 1.1 N
30 mm Stal (~0.2) 0.02 kg / 0.05 lbs
24.0 g / 0.2 N
50 mm Stal (~0.2) 0.00 kg / 0.00 lbs
2.0 g / 0.0 N
The following data calculates the approximate shear load needed to cause the slippage of the magnet down along a vertical metal surface (assuming typical friction). This parameter is relative to the separation distance between the magnet and the metal.

Table 3: Wall mounting (shearing) - behavior on slippery surfaces
MW 35x5 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
2.78 kg / 6.12 lbs
2775.0 g / 27.2 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
1.85 kg / 4.08 lbs
1850.0 g / 18.1 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.93 kg / 2.04 lbs
925.0 g / 9.1 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
4.63 kg / 10.20 lbs
4625.0 g / 45.4 N
When hanging a magnet on a vertical surface (e.g., a car body), it you can count on only about 20%-30% of its nominal power. Gravity as well as a weak degree of grip cause that products slide down faster than they detach. Want to create a wall mount? Note that the sliding force is noticeably lower than the perpendicular breakaway force. On a slippery surface, the magnet will give way down under a significantly smaller weight. Utilizing a rubberized coating can significantly increase the grip.

Table 4: Material efficiency (saturation) - power losses
MW 35x5 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
 0.93 kg / 2.04 lbs
925.0 g / 9.1 N
1 mm
25%
 2.31 kg / 5.10 lbs
2312.5 g / 22.7 N
2 mm
50%
 4.63 kg / 10.20 lbs
4625.0 g / 45.4 N
3 mm
75%
 6.94 kg / 15.29 lbs
6937.5 g / 68.1 N
5 mm
100%
 9.25 kg / 20.39 lbs
9250.0 g / 90.7 N
10 mm
100%
 9.25 kg / 20.39 lbs
9250.0 g / 90.7 N
11 mm
100%
 9.25 kg / 20.39 lbs
9250.0 g / 90.7 N
12 mm
100%
 9.25 kg / 20.39 lbs
9250.0 g / 90.7 N
A thin sheet is unable to focus the full magnetic flux, which squanders power of the holder. Should you install a neodymium to a weak sheet, the flux will pass right through and the attraction force will be weaker. To achieve 100% of this magnet's potential, you require a sufficiently solid backing of steel. The saturation effect means that on thin elements (e.g., thin profiles), the magnet shows lower pull force. We suggest choosing the steel cross-section based on the following data.

Table 5: Thermal stability (stability) - thermal limit
MW 35x5 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 9.25 kg / 20.39 lbs
9250.0 g / 90.7 N
 OK
40 °C -2.2% 9.05 kg / 19.94 lbs
9046.5 g / 88.7 N
 OK
60 °C -4.4% 8.84 kg / 19.50 lbs
8843.0 g / 86.7 N
80 °C -6.6% 8.64 kg / 19.05 lbs
8639.5 g / 84.8 N
100 °C -28.8% 6.59 kg / 14.52 lbs
6586.0 g / 64.6 N
Ordinary NdFeB products change their properties parameters after exceeding the maximum temperature. Protect against heat – excessive heat can permanently destroy this product. As the temperature rises, the magnet's force briefly lowers. Do not use this magnet near heat sources exceeding its safe range. Exceeding the critical threshold will result in permanent loss of magnetic properties.
*Important note: Thermal stability depends not only on the material grade, as well as the dimension ratios. Thin magnets (low Pc) risk losing magnetic properties sooner than long magnets. Red status in the table indicates permanent field degradation for this specific geometry.

Table 6: Magnet-Magnet interaction (attraction) - field range
MW 35x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 17.20 kg / 37.92 lbs
3 075 Gs
2.58 kg / 5.69 lbs
2580 g / 25.3 N
 N/A
1 mm 16.78 kg / 36.99 lbs
3 364 Gs
2.52 kg / 5.55 lbs
2517 g / 24.7 N
 15.10 kg / 33.29 lbs
~0 Gs
2 mm 16.29 kg / 35.91 lbs
3 314 Gs
2.44 kg / 5.39 lbs
2443 g / 24.0 N
 14.66 kg / 32.32 lbs
~0 Gs
3 mm 15.75 kg / 34.71 lbs
3 259 Gs
2.36 kg / 5.21 lbs
2362 g / 23.2 N
 14.17 kg / 31.24 lbs
~0 Gs
5 mm 14.54 kg / 32.05 lbs
3 131 Gs
2.18 kg / 4.81 lbs
2180 g / 21.4 N
 13.08 kg / 28.84 lbs
~0 Gs
10 mm 11.18 kg / 24.64 lbs
2 746 Gs
1.68 kg / 3.70 lbs
1677 g / 16.4 N
 10.06 kg / 22.18 lbs
~0 Gs
20 mm 5.45 kg / 12.02 lbs
1 918 Gs
0.82 kg / 1.80 lbs
818 g / 8.0 N
 4.91 kg / 10.82 lbs
~0 Gs
50 mm 0.45 kg / 1.00 lbs
552 Gs
0.07 kg / 0.15 lbs
68 g / 0.7 N
 0.41 kg / 0.90 lbs
~0 Gs
60 mm 0.21 kg / 0.47 lbs
380 Gs
0.03 kg / 0.07 lbs
32 g / 0.3 N
 0.19 kg / 0.42 lbs
~0 Gs
70 mm 0.11 kg / 0.24 lbs
269 Gs
0.02 kg / 0.04 lbs
16 g / 0.2 N
 0.10 kg / 0.21 lbs
~0 Gs
80 mm 0.06 kg / 0.13 lbs
197 Gs
0.01 kg / 0.02 lbs
9 g / 0.1 N
 0.05 kg / 0.11 lbs
~0 Gs
90 mm 0.03 kg / 0.07 lbs
147 Gs
0.00 kg / 0.01 lbs
5 g / 0.0 N
 0.03 kg / 0.06 lbs
~0 Gs
100 mm 0.02 kg / 0.04 lbs
112 Gs
0.00 kg / 0.01 lbs
3 g / 0.0 N
 0.02 kg / 0.04 lbs
~0 Gs
Two magnets interact from a significantly greater distance than a magnet and sheet combination. The setup of magnet-to-magnet creates a more powerful interaction and a larger range of operation. Designing a powerful holder? Use a pair of magnets instead of one magnet and a striker plate. Exercise caution that when connecting a pair of magnets, the pinch force is extreme. The levitation is a bit weaker than the connection force, but still significant.
*Field value between like poles is approximately ~0 Gs at the geometric center between the magnets (caused by magnetic field nullification).
* Figures refer to shear force of a pair of same neodymium magnets (friction coefficient ~0.15 for Ni-Ni plating).

Table 7: Protective zones (electronics) - precautionary measures
MW 35x5 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 12.5 cm
Hearing aid 10 Gs (1.0 mT) 9.5 cm
Mechanical watch 20 Gs (2.0 mT) 7.5 cm
Mobile device 40 Gs (4.0 mT) 6.0 cm
Car key 50 Gs (5.0 mT) 5.5 cm
Payment card 400 Gs (40.0 mT) 2.5 cm
HDD hard drive 600 Gs (60.0 mT) 2.0 cm
Powerful magnet radiation poses a large risk to IT equipment as well as pacemakers. These neodymiums generate a field that prevents correct functioning of digital equipment. Remember: the invisible magnetic field passes through tissues and housings. Increased vigilance must be taken by people with hearing aids and drug dispensers. Influence will be felt by: automatic timepieces, car keys, membranes, and screens. Avoid contact with magnetic cards, hard drives, or precise measuring instruments.

Table 8: Dynamics (cracking risk) - warning
MW 35x5 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 19.08 km/h
(5.30 m/s)
 0.51 J
30 mm 28.19 km/h
(7.83 m/s)
 1.11 J
50 mm 36.13 km/h
(10.04 m/s)
 1.82 J
100 mm 51.07 km/h
(14.18 m/s)
 3.63 J
Neodymium magnets are very brittle – a collision with steel risks their cracking. Pay attention to connection velocity – a magnet released freely becomes dangerous. Kinetic force can destroy the magnet or painful pinches to fingers. Be sure to control the product during mounting so it doesn't hit with great force against the metal. A collision at high speed means shattering of the magnet. Use safety goggles when playing with large magnets.

Table 9: Corrosion resistance
MW 35x5 / 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. Improper coating selection is the most common cause of magnet failure over time.

Table 10: Construction data (Pc)
MW 35x5 / N38

Parameter Value SI Unit / Description
Magnetic Flux 20 291 Mx 202.9 µWb
Pc Coefficient 0.22 Low (Flat)
Total magnetic flux passing through the pole surface. Essential parameter when building generators and motors. The Pc coefficient determines the magnet's operating point.

Table 11: Physics of underwater searching
MW 35x5 / N38

Environment Effective steel pull Effect
Air (land) 9.25 kg Standard
Water (riverbed) 10.59 kg
(+1.34 kg buoyancy gain)
+14.5%
Corrosion warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
Contrary to myths, water does not block the magnetic field. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Vertical hold

*Caution: On a vertical wall, the magnet retains merely approx. 20-30% of its nominal pull.

2. Plate thickness effect

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

3. Heat tolerance

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

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.22

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 Pc (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 Pc 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: 010059-2026
Magnet Unit Converter
Pulling force
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The offered product is an exceptionally strong cylindrical magnet, produced from modern NdFeB material, which, with dimensions of Ø35x5 mm, guarantees maximum efficiency. This specific item boasts an accuracy of ±0.1mm and professional build quality, making it a perfect solution for professional engineers and designers. As a cylindrical magnet with impressive force (approx. 9.25 kg), this product is in stock from our warehouse in Poland, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating secures it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced sensors, and efficient magnetic separators, where maximum induction on a small surface counts. Thanks to the high power of 90.73 N with a weight of only 36.08 g, this cylindrical magnet is indispensable in miniature devices and wherever low weight is crucial.
Due to the delicate structure of the ceramic sinter, you must not use force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. 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 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 (Ø35x5), 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 Ø35x5 mm, which, at a weight of 36.08 g, makes it an element with impressive magnetic energy density. The key parameter here is the lifting capacity amounting to approximately 9.25 kg (force ~90.73 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 5 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 as well as weaknesses of rare earth magnets.

Pros

In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (in laboratory conditions),
  • Neodymium magnets are remarkably resistant to loss of magnetic properties caused by external magnetic fields,
  • Thanks to the smooth finish, the coating of nickel, gold-plated, or silver gives an visually attractive appearance,
  • Magnetic induction on the working layer of the magnet turns out to be very high,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Thanks to flexibility in constructing and the ability to modify to client solutions,
  • Huge importance in modern industrial fields – they find application in data components, electromotive mechanisms, medical equipment, also complex engineering applications.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Weaknesses

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals
  • Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
  • We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can rust. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
  • Limited possibility of making threads in the magnet and complex shapes - recommended is a housing - magnetic holder.
  • Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which gains importance in the context of child health protection. Furthermore, small components of these products can complicate diagnosis medical when they are in the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Highest magnetic holding force – what affects it?

Magnet power is the result of a measurement for optimal configuration, assuming:
  • with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
  • whose transverse dimension is min. 10 mm
  • with a surface free of scratches
  • without any insulating layer between the magnet and steel
  • during detachment in a direction vertical to the plane
  • in stable room temperature

Magnet lifting force in use – key factors

Effective lifting capacity is influenced by specific conditions, including (from priority):
  • Gap (betwixt the magnet and the plate), since even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, corrosion or debris).
  • Force direction – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
  • Base massiveness – too thin sheet causes magnetic saturation, causing part of the power to be wasted into the air.
  • Material composition – not every steel attracts identically. Alloy additives weaken the interaction with the magnet.
  • Plate texture – smooth surfaces ensure maximum contact, which improves force. Rough surfaces reduce efficiency.
  • Thermal environment – heating the magnet causes a temporary drop of induction. It is worth remembering the maximum operating temperature for a given model.

Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. Additionally, even a slight gap between the magnet and the plate reduces the lifting capacity.

H&S for magnets
Allergic reactions

It is widely known that nickel (the usual finish) is a common allergen. If you have an allergy, refrain from direct skin contact and choose encased magnets.

Medical implants

Warning for patients: Powerful magnets disrupt medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.

Conscious usage

Handle magnets with awareness. Their huge power can shock even professionals. Be vigilant and do not underestimate their power.

Magnet fragility

NdFeB magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets leads to them shattering into small pieces.

Electronic devices

Data protection: Neodymium magnets can damage data carriers and sensitive devices (heart implants, medical aids, timepieces).

Keep away from children

Only for adults. Small elements pose a choking risk, leading to serious injuries. Store out of reach of kids and pets.

Dust is flammable

Dust generated during machining of magnets is flammable. Do not drill into magnets unless you are an expert.

Operating temperature

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

Physical harm

Danger of trauma: The pulling power is so immense that it can cause hematomas, crushing, and even bone fractures. Protective gloves are recommended.

GPS Danger

A powerful magnetic field disrupts the functioning of compasses in phones and navigation systems. Do not bring magnets near a device to prevent damaging the sensors.

Safety First! Learn more about risks in the article: Magnet Safety Guide.