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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

technical specifications »

13.81 ZŁ with VAT / pcs + price for transport

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Technical of the product - 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 - report

These data constitute the direct effect of a engineering calculation. Values are based on algorithms for the class Nd2Fe14B. Actual parameters might slightly differ from theoretical values. Use these calculations as a reference point for designers.

Table 1: Static pull 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
 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
 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
Grip strength weakens significantly with every mm of distance. Note that even a microscopic distance (e.g., dirt, varnish, dust) significantly reduces the pull force. Neodymiums operate optimally in perfect adhesion; gap drastically cuts the force. Observe how quickly the pull force drop, when the product does not touch flatly to the metal substrate. When calculating the mounting, eliminate redundant distances.

Table 2: Shear capacity (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 table below presents the theoretical shear load needed to cause the sliding of the magnet vertically on a upright steel plate (assuming standard friction). This parameter varies with the air gap between the magnet and the metal.

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
When placing a element on a vertical wall (e.g., a car body), it you can count on only about 1/5 of its maximum pull force. Gravity as well as a weak degree of grip mean that products move down faster than they pop off the substrate. Want to create a wall mount? Consider that the shear force is significantly lower than the perpendicular breakaway force. On a smooth steel, the holder will slide down under a noticeably lighter weight. Using a rubber coating can effectively increase the grip.

Table 4: Steel thickness (substrate influence) - 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 incapable of conduct the entire magnetic field, which squanders power of the magnet. If you install a neodymium to a weak sheet, the flux will penetrate right through and the attraction force will be weaker. To squeeze the maximum of this neodymium's potential, you need a suitably thick element of steel. The material oversaturation means that on thin elements (e.g., car bodies), the product holds weaker. We advise picking the steel thickness from these parameters.

Table 5: Thermal stability (stability) - 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
Classic neodymiums irreversibly lose power above the temperature limit. Avoid high temperatures – high temperature can irreversibly demagnetize this magnet. With increasing heat, the neodymium's capacity momentarily lowers. Avoid using this product close to ovens higher than its safe range. Exceeding the critical threshold will cause irreversible degradation of magnetism.
*Technical advisory: Heat tolerance depends not only on the material grade, but also on the magnet's shape. Low-profile magnets (pancake types) may lose charge permanently under lower heat stress compared to rod magnets. Warning indicator in the table indicates permanent field degradation for this particular item.

Table 6: Magnet-Magnet interaction (repulsion) - forces in the system
MW 35x5 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Strength (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 strong neodymiums attract each other from a wider radius than a neodymium and metal setup. The connection of two magnets produces a massive flux and a wider radius of action. Designing a powerful holder? Apply two magnets instead of a neodymium and a striker plate. Be careful that when connecting a pair of magnets, the pinch force is massive. The repulsion force is a bit weaker than the attraction, but still significant.
*The magnetic induction for N-N configuration drops to ~0 Gs at the geometric center of the gap (resulting from vector opposition).
Attention: Estimates demonstrate sliding force of two matching magnets (friction ~0.15 for Ni-Ni layer).

Table 7: Hazards (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
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
A strong magnetic field poses a serious hazard to IT equipment as well as pacemakers. These neodymiums produce a flux that destroys function of digital equipment. Be aware: the unseen radiation passes through tissues and plastic. 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. Do not bring the product near payment cards, hard drives, or sensitive navigation tools.

Table 8: Collisions (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
NdFeB products are delicate – a violent impact against metal risks their cracking. Control the attraction moment – a magnet released freely speeds with massive force. Striking energy can trigger coating fragments or injury to skin. Be sure to control the product during installation so it doesn't hit violently against the metal. A collision at high speed almost guarantees destruction of the magnet. Use safety goggles when playing with powerful specimens.

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)
The following table defines the conditions under which this product can be safely used. Note the thickness of the protective layer.

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

Parameter Value SI Unit / Description
Magnetic Flux 20 291 Mx 202.9 µWb
Pc Coefficient 0.22 Low (Flat)
Flux value passing through the magnet pole. Key data when building generators and motors. The Pc coefficient defines the magnet's operating point.

Table 11: Submerged application
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%
Warning: Standard nickel requires drying after every contact with moisture; lack of maintenance will lead to rust spots.
In water, the magnet feels stronger thanks to Archimedes' principle. As a result, your magnet will pull a heavier object from the bottom than if you lifted it in the air.
1. Sliding resistance

*Caution: On a vertical surface, the magnet retains only a fraction of its max power.

2. Steel thickness impact

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

3. Heat tolerance

*For standard magnets, the critical 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 specification and ecology
Chemical composition
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
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The presented product is a very strong cylindrical magnet, composed of advanced NdFeB material, which, at dimensions of Ø35x5 mm, guarantees the highest energy density. This specific item features high dimensional repeatability and professional build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 9.25 kg), this product is available off-the-shelf from our warehouse in Poland, ensuring quick 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 ideal for building electric motors, advanced sensors, and efficient magnetic separators, where field concentration 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 electronics and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, you must not use force-fitting (so-called press-fit), as this risks chipping the coating of this professional component. To ensure long-term durability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Magnets N38 are suitable for 90% of applications in automation and machine building, where extreme miniaturization with maximum force is not required. If you need even stronger 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 diametrically if your project requires it.

Pros and cons of Nd2Fe14B magnets.

Benefits

Besides their stability, neodymium magnets are valued for these benefits:
  • They do not lose power, even over approximately 10 years – the drop in strength is only ~1% (according to tests),
  • They maintain their magnetic properties even under close interference source,
  • Thanks to the glossy finish, the plating of Ni-Cu-Ni, gold-plated, or silver-plated gives an visually attractive appearance,
  • Magnets have extremely high magnetic induction on the active area,
  • Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in shaping and the ability to adapt to client solutions,
  • Huge importance in future technologies – they are commonly used in HDD drives, electromotive mechanisms, advanced medical instruments, as well as technologically advanced constructions.
  • Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Weaknesses

Characteristics of disadvantages of neodymium magnets: application proposals
  • At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
  • Neodymium magnets decrease their force 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
  • When exposed to humidity, magnets usually rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
  • Due to limitations in realizing nuts and complex forms in magnets, we recommend using casing - magnetic mechanism.
  • Health risk related to microscopic parts of magnets pose a threat, if swallowed, which becomes key in the context of child safety. Additionally, tiny parts of these devices are able to disrupt the diagnostic process medical in case of swallowing.
  • With mass production the cost of neodymium magnets is economically unviable,

Lifting parameters

Maximum magnetic pulling force – what it depends on?

The lifting capacity listed is a measurement result performed under the following configuration:
  • on a base made of structural steel, perfectly concentrating the magnetic field
  • whose thickness reaches at least 10 mm
  • with a plane perfectly flat
  • under conditions of gap-free contact (metal-to-metal)
  • during pulling in a direction vertical to the plane
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

Bear in mind that the application force will differ influenced by the following factors, starting with the most relevant:
  • Distance (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) can cause a drastic drop in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
  • Pull-off angle – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Chemical composition of the base – mild steel gives the best results. Alloy admixtures lower magnetic properties and holding force.
  • Surface structure – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness acts like micro-gaps.
  • Operating temperature – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost they can be stronger (up to a certain limit).

Holding force was tested on a smooth steel plate of 20 mm thickness, when the force acted perpendicularly, however under parallel forces the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate reduces the lifting capacity.

Precautions when working with neodymium magnets
Dust is flammable

Mechanical processing of neodymium magnets carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.

This is not a toy

Product intended for adults. Tiny parts can be swallowed, leading to intestinal necrosis. Keep away from children and animals.

Cards and drives

Very strong magnetic fields can erase data on payment cards, HDDs, and storage devices. Keep a distance of min. 10 cm.

Pinching danger

Risk of injury: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Allergy Warning

Studies show that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, refrain from direct skin contact and select coated magnets.

Permanent damage

Control the heat. Exposing the magnet to high heat will destroy its properties and pulling force.

Danger to pacemakers

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Do not underestimate power

Handle magnets consciously. Their huge power can shock even professionals. Be vigilant and respect their force.

Protective goggles

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

Magnetic interference

Navigation devices and smartphones are highly sensitive to magnetism. Direct contact with a strong magnet can ruin the internal compass in your phone.

Danger! Learn more about risks in the article: Safety of working with magnets.