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MW 5x2 / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010085

GTIN/EAN: 5906301810841

5.00
Load capacity 0.70 kg / 6.83 N Magnetic Induction 386.50 mT / 3865 Gs
Diameter Ø
5 mm [±0,1 mm]
Height
2 mm [±0,1 mm]
Weight
0.29 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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price from 1 pcs
0.1500 zł
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price from 4000 pcs
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0.1734 zł
price from 17000 pcs
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Frequently asked questions

What is the maximum working temperature of a disc magnet?
Standard N-series grades work up to 80 °C. Grades N50, N52 and N54 have a lower limit of 60 °C, because coercivity falls as BHmax rises. Higher temperatures require the H (120 °C), SH (150 °C), UH (180 °C), EH (200 °C) or AH (230 °C) series. Within the working range the magnet loses about 0.11% of its induction per degree, and that loss is reversible.
What is the difference between N38, N42 and N52?
The number after N is the energy product BHmax. Moving from N38 to N52 raises it by several tens of percent, but the real holding force increases by roughly 20%, because force also depends on geometry and on the magnetic circuit. N52 costs about twice as much as N42, so for most mounting work N38–N42 is the best price-to-force ratio.
What is the dimensional tolerance?
±0.1 mm as standard, ±0.05 mm to order. The tolerance is stated next to the dimensions on every product page.

Engineering report for this magnet

Full PDF analysis: pull and shear force, effect of distance, temperature and plate thickness, safety distances and the demagnetization curve.

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Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical specification - MW 5x2 / N38 - cylindrical magnet

Specification / characteristics - MW 5x2 / N38 - cylindrical magnet

properties
properties values
Cat. no. 010085
GTIN/EAN 5906301810841
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 5 mm [±0,1 mm]
Height 2 mm [±0,1 mm]
Weight 0.29 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.70 kg / 6.83 N
Magnetic Induction ~ ? 386.50 mT / 3865 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 5x2 / N38 - cylindrical magnet
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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

Engineering simulation of the product - data

These values constitute the outcome of a mathematical simulation. Values were calculated on algorithms for the class Nd2Fe14B. Real-world conditions might slightly differ. Use these calculations as a preliminary roadmap when designing systems.

Table 1: Static force (force vs gap) - characteristics
MW 5x2 / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 3860 Gs
386.0 mT
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
weak grip
1 mm 2460 Gs
246.0 mT
0.28 kg / 0.63 LBS
284.4 g / 2.8 N
weak grip
2 mm 1384 Gs
138.4 mT
0.09 kg / 0.20 LBS
90.0 g / 0.9 N
weak grip
3 mm 782 Gs
78.2 mT
0.03 kg / 0.06 LBS
28.8 g / 0.3 N
weak grip
5 mm 293 Gs
29.3 mT
0.00 kg / 0.01 LBS
4.0 g / 0.0 N
weak grip
10 mm 55 Gs
5.5 mT
0.00 kg / 0.00 LBS
0.1 g / 0.0 N
weak grip
15 mm 18 Gs
1.8 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
20 mm 8 Gs
0.8 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
30 mm 3 Gs
0.3 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 LBS
0.0 g / 0.0 N
weak grip

Table 2: Sliding hold (wall)
MW 5x2 / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Stal (~0.2) 0.14 kg / 0.31 LBS
140.0 g / 1.4 N
1 mm Stal (~0.2) 0.06 kg / 0.12 LBS
56.0 g / 0.5 N
2 mm Stal (~0.2) 0.02 kg / 0.04 LBS
18.0 g / 0.2 N
3 mm Stal (~0.2) 0.01 kg / 0.01 LBS
6.0 g / 0.1 N
5 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
10 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
15 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
20 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
30 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N
50 mm Stal (~0.2) 0.00 kg / 0.00 LBS
0.0 g / 0.0 N

Table 3: Vertical assembly (sliding) - vertical pull
MW 5x2 / N38

Surface type Friction coefficient / % Mocy Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% Nominalnej Siły
0.21 kg / 0.46 LBS
210.0 g / 2.1 N
Painted steel (standard)
µ = 0.2 20% Nominalnej Siły
0.14 kg / 0.31 LBS
140.0 g / 1.4 N
Oily/slippery steel
µ = 0.1 10% Nominalnej Siły
0.07 kg / 0.15 LBS
70.0 g / 0.7 N
Magnet with anti-slip rubber
µ = 0.5 50% Nominalnej Siły
0.35 kg / 0.77 LBS
350.0 g / 3.4 N

Table 4: Material efficiency (saturation) - sheet metal selection
MW 5x2 / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.07 kg / 0.15 LBS
70.0 g / 0.7 N
1 mm
25%
0.18 kg / 0.39 LBS
175.0 g / 1.7 N
2 mm
50%
0.35 kg / 0.77 LBS
350.0 g / 3.4 N
3 mm
75%
0.52 kg / 1.16 LBS
525.0 g / 5.2 N
5 mm
100%
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
10 mm
100%
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
11 mm
100%
0.70 kg / 1.54 LBS
700.0 g / 6.9 N
12 mm
100%
0.70 kg / 1.54 LBS
700.0 g / 6.9 N

Table 5: Thermal stability (stability) - resistance threshold
MW 5x2 / N38

Ambient temp. (°C) Power loss Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.70 kg / 1.54 LBS
700.0 g / 6.9 N
OK
40 °C -2.2% 0.68 kg / 1.51 LBS
684.6 g / 6.7 N
OK
60 °C -4.4% 0.67 kg / 1.48 LBS
669.2 g / 6.6 N
80 °C -6.6% 0.65 kg / 1.44 LBS
653.8 g / 6.4 N
100 °C -28.8% 0.50 kg / 1.10 LBS
498.4 g / 4.9 N

Table 6: Two magnets (attraction) - field collision
MW 5x2 / N38

Gap (mm) Attraction (kg/lbs) (N-S) Shear Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 1.80 kg / 3.98 LBS
5 236 Gs
0.27 kg / 0.60 LBS
271 g / 2.7 N
N/A
1 mm 1.21 kg / 2.68 LBS
6 336 Gs
0.18 kg / 0.40 LBS
182 g / 1.8 N
1.09 kg / 2.41 LBS
~0 Gs
2 mm 0.73 kg / 1.62 LBS
4 921 Gs
0.11 kg / 0.24 LBS
110 g / 1.1 N
0.66 kg / 1.45 LBS
~0 Gs
3 mm 0.42 kg / 0.92 LBS
3 711 Gs
0.06 kg / 0.14 LBS
62 g / 0.6 N
0.37 kg / 0.83 LBS
~0 Gs
5 mm 0.13 kg / 0.29 LBS
2 071 Gs
0.02 kg / 0.04 LBS
19 g / 0.2 N
0.12 kg / 0.26 LBS
~0 Gs
10 mm 0.01 kg / 0.02 LBS
587 Gs
0.00 kg / 0.00 LBS
2 g / 0.0 N
0.01 kg / 0.02 LBS
~0 Gs
20 mm 0.00 kg / 0.00 LBS
110 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
50 mm 0.00 kg / 0.00 LBS
9 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
60 mm 0.00 kg / 0.00 LBS
5 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
70 mm 0.00 kg / 0.00 LBS
3 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
80 mm 0.00 kg / 0.00 LBS
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
90 mm 0.00 kg / 0.00 LBS
2 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs
100 mm 0.00 kg / 0.00 LBS
1 Gs
0.00 kg / 0.00 LBS
0 g / 0.0 N
0.00 kg / 0.00 LBS
~0 Gs

Table 7: Safety (HSE) (electronics) - warnings
MW 5x2 / N38

Object / Device Limit (Gauss) / mT Safe distance
Pacemaker 5 Gs (0.5 mT) 2.5 cm
Hearing aid 10 Gs (1.0 mT) 2.0 cm
Timepiece 20 Gs (2.0 mT) 1.5 cm
Mobile device 40 Gs (4.0 mT) 1.5 cm
Remote 50 Gs (5.0 mT) 1.5 cm
Payment card 400 Gs (40.0 mT) 0.5 cm
HDD hard drive 600 Gs (60.0 mT) 0.5 cm

Table 8: Collisions (cracking risk) - collision effects
MW 5x2 / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 25.34 km/h
(7.04 m/s)
0.01 J
30 mm 25.35 km/h
(7.04 m/s)
0.01 J
50 mm 25.35 km/h
(7.04 m/s)
0.01 J
100 mm 25.35 km/h
(7.04 m/s)
0.01 J

Table 9: Corrosion resistance
MW 5x2 / 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 5x2 / N38

Parameter Value SI Unit / Description
Magnetic Flux 785 Mx 7.9 µWb
Pc Coefficient 0.50 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 5x2 / N38

Environment Effective steel pull Effect
Air (land) 0.70 kg Standard
Water (riverbed) 0.80 kg
(+0.10 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. Sliding resistance

*Caution: On a vertical wall, the magnet retains just ~20% of its max power.

2. Plate thickness effect

*Thin steel (e.g. 0.5mm PC case) significantly weakens the holding force.

3. Power loss vs temp

*For standard magnets, the max working temp is 80°C.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.50

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 specification and ecology

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%

Ecology and recycling (GPSR)

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: 010085-2026
Measurement Calculator

Magnet pull force


Magnetic Induction

Check out also products

The offered product is an incredibly powerful cylinder magnet, composed of advanced NdFeB material, which, with dimensions of Ø5x2 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and professional build quality, making it a perfect solution for professional engineers and designers. As a magnetic rod with impressive force (approx. 0.70 kg), this product is in stock from our warehouse in Poland, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating effectively protects it against corrosion in typical operating conditions, ensuring an aesthetic appearance and durability for years.
This model is perfect for building electric motors, advanced Hall effect sensors, and efficient filters, where field concentration on a small surface counts. Thanks to the high power of 6.83 N with a weight of only 0.29 g, this rod is indispensable in miniature devices and wherever low weight is crucial.
Due to the brittleness of the NdFeB material, we absolutely advise against force-fitting (so-called press-fit), as this risks immediate cracking of this professional component. To ensure stability in automation, anaerobic resins are used, which are safe for nickel 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 (Ø5x2), contact us regarding higher grades (e.g., N50, N52), however, N38 is the standard available off-the-shelf in our warehouse.
The presented product is a neodymium magnet with precisely defined parameters: diameter 5 mm and height 2 mm. The value of 6.83 N means that the magnet is capable of holding a weight many times exceeding its own mass of 0.29 g. The product has a [NiCuNi] coating, which protects the surface against external factors, giving it an aesthetic, silvery shine.
Standardly, the magnetic axis runs through the center of the cylinder, causing the greatest attraction force to occur on the bases with a diameter of 5 mm. 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.

Pros as well as cons of Nd2Fe14B magnets.

Benefits

Apart from their superior holding force, neodymium magnets have these key benefits:
  • They have unchanged lifting capacity, and over more than 10 years their attraction force decreases symbolically – ~1% (according to theory),
  • They are noted for resistance to demagnetization induced by external magnetic fields,
  • Thanks to the reflective finish, the coating of nickel, gold, or silver gives an clean appearance,
  • Magnetic induction on the surface of the magnet turns out to be very high,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of accurate modeling and adapting to atypical requirements,
  • Significant place in modern technologies – they find application in magnetic memories, brushless drives, advanced medical instruments, and industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, in case of application outdoors
  • We recommend casing - magnetic mount, due to difficulties in producing threads inside the magnet and complicated shapes.
  • Potential hazard resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small components of these magnets can complicate diagnosis medical after entering the body.
  • Due to neodymium price, their price is higher than average,

Lifting parameters

Detachment force of the magnet in optimal conditionswhat affects it?

The declared magnet strength concerns the peak performance, measured under ideal test conditions, specifically:
  • with the application of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with an ideally smooth contact surface
  • with zero gap (without coatings)
  • under perpendicular application of breakaway force (90-degree angle)
  • in stable room temperature

Practical lifting capacity: influencing factors

Effective lifting capacity is influenced by specific conditions, mainly (from priority):
  • Clearance – the presence of foreign body (paint, tape, air) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Steel thickness – too thin sheet causes magnetic saturation, causing part of the flux to be lost into the air.
  • Plate material – mild steel gives the best results. Alloy admixtures reduce magnetic properties and lifting capacity.
  • Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness creates an air distance.
  • Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a smooth steel plate of optimal thickness (min. 20 mm), under vertically applied force, however under parallel forces the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet and the plate decreases the load capacity.

Safe handling of NdFeB magnets
Sensitization to coating

It is widely known that nickel (the usual finish) is a strong allergen. If you have an allergy, prevent touching magnets with bare hands or select coated magnets.

Risk of cracking

Beware of splinters. Magnets can explode upon violent connection, ejecting sharp fragments into the air. Wear goggles.

Respect the power

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

Combustion hazard

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.

Bone fractures

Pinching hazard: The attraction force is so great that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.

Demagnetization risk

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

Compass and GPS

GPS units and smartphones are highly susceptible to magnetic fields. Close proximity with a strong magnet can permanently damage the internal compass in your phone.

Magnetic media

Do not bring magnets near a wallet, laptop, or TV. The magnetism can permanently damage these devices and wipe information from cards.

Swallowing risk

Always keep magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are tragic.

Pacemakers

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

Important! Need more info? Check our post: Why are neodymium magnets dangerous?