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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

13.81 with VAT / pcs + price for transport

11.23 ZŁ net + 23% VAT / pcs

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Technical - 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

Technical modeling of the magnet - technical parameters

These values constitute the outcome of a mathematical analysis. Results rely on models for the class Nd2Fe14B. Real-world parameters may deviate from the simulation results. Treat these calculations as a supplementary guide when designing systems.

Table 1: Static force (pull vs gap) - power drop
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
strong
1 mm 1657 Gs
165.7 mT
8.76 kg / 19.31 LBS
8759.4 g / 85.9 N
strong
2 mm 1599 Gs
159.9 mT
8.15 kg / 17.97 LBS
8152.2 g / 80.0 N
strong
3 mm 1530 Gs
153.0 mT
7.47 kg / 16.47 LBS
7468.5 g / 73.3 N
strong
5 mm 1373 Gs
137.3 mT
6.01 kg / 13.25 LBS
6011.5 g / 59.0 N
strong
10 mm 959 Gs
95.9 mT
2.93 kg / 6.47 LBS
2932.7 g / 28.8 N
strong
15 mm 631 Gs
63.1 mT
1.27 kg / 2.80 LBS
1270.4 g / 12.5 N
safe
20 mm 413 Gs
41.3 mT
0.54 kg / 1.20 LBS
544.8 g / 5.3 N
safe
30 mm 190 Gs
19.0 mT
0.12 kg / 0.25 LBS
115.2 g / 1.1 N
safe
50 mm 56 Gs
5.6 mT
0.01 kg / 0.02 LBS
10.1 g / 0.1 N
safe

Table 2: Shear load (wall)
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

Table 3: Vertical assembly (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

Table 4: Steel thickness (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

Table 5: Thermal resistance (material behavior) - power drop
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

Table 6: Two magnets (repulsion) - field range
MW 35x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Lateral 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

Table 7: Safety (HSE) (implants) - 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
Timepiece 20 Gs (2.0 mT) 7.5 cm
Phone / Smartphone 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

Table 8: Impact energy (kinetic energy) - 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

Table 9: Surface protection spec
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)

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

Parameter Value SI Unit / Description
Magnetic Flux 20 291 Mx 202.9 µWb
Pc Coefficient 0.22 Low (Flat)

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.
1. Vertical hold

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

2. Steel saturation

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

3. Thermal stability

*For N38 material, the max working temp is 80°C.

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

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

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 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%
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: 010059-2026
Quick Unit Converter
Force (pull)

Magnetic Induction

See also proposals

The offered product is an extremely powerful cylinder magnet, composed of durable NdFeB material, which, with dimensions of Ø35x5 mm, guarantees optimal power. This specific item is characterized by high dimensional repeatability and professional build quality, making it an excellent solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 9.25 kg), this product is in stock from our European logistics center, ensuring lightning-fast order fulfillment. Moreover, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, guaranteeing an aesthetic appearance and durability for years.
It successfully proves itself in DIY projects, advanced robotics, and broadly understood industry, serving as a fastening or actuating element. Thanks to the high power of 90.73 N with a weight of only 36.08 g, this rod is indispensable in miniature devices and wherever every gram matters.
Due to the brittleness of the NdFeB material, 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 industry, anaerobic resins 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 popular standard for professional neodymium magnets, offering an optimal price-to-power ratio 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 available off-the-shelf in our warehouse.
This model is characterized by dimensions Ø35x5 mm, which, at a weight of 36.08 g, makes it an element with high magnetic energy density. The value of 90.73 N means that the magnet is capable of holding a weight many times exceeding its own mass of 36.08 g. The product has a [NiCuNi] coating, which secures it against external factors, giving it an aesthetic, silvery shine.
This cylinder is magnetized axially (along the height of 5 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 magnetic performance, neodymium magnets are valued for these benefits:
  • They retain magnetic properties for around 10 years – the loss is just ~1% (according to analyses),
  • They maintain their magnetic properties even under strong external field,
  • A magnet with a metallic nickel surface has an effective appearance,
  • The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in shaping and the ability to modify to specific needs,
  • Fundamental importance in advanced technology sectors – they are commonly used in hard drives, electric motors, diagnostic systems, also modern systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages

Drawbacks and weaknesses of neodymium magnets: tips and applications.
  • At very strong impacts they can crack, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets lose their power under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Limited possibility of making nuts in the magnet and complex forms - preferred is a housing - mounting mechanism.
  • Potential hazard related to microscopic parts of magnets are risky, when accidentally swallowed, which becomes key in the context of child safety. Additionally, tiny parts of these devices can complicate diagnosis medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Holding force characteristics

Breakaway strength of the magnet in ideal conditionswhat contributes to it?

Magnet power was defined for the most favorable conditions, assuming:
  • on a block made of mild steel, effectively closing the magnetic field
  • whose transverse dimension reaches at least 10 mm
  • with a plane perfectly flat
  • with direct contact (no impurities)
  • for force applied at a right angle (in the magnet axis)
  • in neutral thermal conditions

Practical lifting capacity: influencing factors

In practice, the actual holding force results from a number of factors, presented from most significant:
  • Clearance – the presence of foreign body (paint, tape, gap) interrupts the magnetic circuit, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
  • Plate thickness – too thin steel causes magnetic saturation, causing part of the power to be lost to the other side.
  • Material composition – not every steel reacts the same. Alloy additives weaken the attraction effect.
  • Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Temperature influence – high temperature reduces pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. Additionally, even a minimal clearance between the magnet’s surface and the plate reduces the load capacity.

Precautions when working with neodymium magnets
Risk of cracking

Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

ICD Warning

For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or request help to handle the magnets.

Electronic hazard

Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can destroy these devices and erase data from cards.

Fire warning

Drilling and cutting of NdFeB material carries a risk of fire risk. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

Physical harm

Large magnets can break fingers instantly. Do not put your hand betwixt two strong magnets.

This is not a toy

These products are not toys. Swallowing multiple magnets may result in them connecting inside the digestive tract, which poses a critical condition and requires immediate surgery.

Heat sensitivity

Watch the temperature. Exposing the magnet to high heat will ruin its properties and strength.

Metal Allergy

It is widely known that nickel (the usual finish) is a common allergen. If you have an allergy, refrain from touching magnets with bare hands or choose encased magnets.

Impact on smartphones

A powerful magnetic field interferes with the functioning of compasses in phones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.

Safe operation

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

Important! Details about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98