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MW 9.5x1 zestaw 4000 szt. / N38 - cylindrical magnet

cylindrical magnet

Catalog no 010557

GTIN/EAN: 5906301815495

Load capacity 0.40 kg / 3.96 N Magnetic Induction 127.68 mT / 1277 Gs
Diameter Ø
9.5 mm [±0,1 mm]
Height
1 mm [±0,1 mm]
Weight
2120 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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Gross
price from 1 pcs
865.04 zł
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price from 5 pcs
761.24 zł
936.32 zł

Frequently asked questions

Where can I buy strong cylindrical neodymium magnets?
See the available cylinders in the DHIT catalogue. Compare dimensions, grade and the pull-force value on each product card; grade alone does not determine the pull force of a finished magnet.
Can a small cylindrical magnet provide a strong grip for precise workshop work?
Yes, but size alone is not enough to predict the result. Geometry, the steel surface and the direction of load affect the grip. Compare the specifications of the selected dimensions on their product cards.
Which cylindrical magnet can work at a higher temperature?
Check the operating-temperature limit of the particular model rather than assuming one limit for all N grades. The offered N52 models are rated up to 60°C. For hotter applications, ask for a product with a confirmed specification for the actual working temperature.

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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Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Technical parameters - MW 9.5x1 zestaw 4000 szt. / N38 - cylindrical magnet

Specification / characteristics - MW 9.5x1 zestaw 4000 szt. / N38 - cylindrical magnet

properties
properties values
Cat. no. 010557
GTIN/EAN 5906301815495
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 9.5 mm [±0,1 mm]
Height 1 mm [±0,1 mm]
Weight 2120 g
Magnetization Direction ↑ axial
Load capacity ~ ? 0.40 kg / 3.96 N
Magnetic Induction ~ ? 127.68 mT / 1277 Gs
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±0.1 mm

Magnetic properties of material N38

Specification / characteristics MW 9.5x1 zestaw 4000 szt. / 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

Physical modeling of the assembly - report

These information represent the direct effect of a engineering analysis. Results were calculated on models for the class Nd2Fe14B. Actual parameters might slightly differ. Please consider these data as a preliminary roadmap for designers.

Table 1: Static pull force (force vs distance) - power drop
MW 9.5x1 zestaw 4000 szt. / N38

Distance (mm) Induction (Gauss) / mT Pull Force (kg/lbs/g/N) Risk Status
0 mm 1276 Gs
127.6 mT
0.40 kg / 0.88 pounds
400.0 g / 3.9 N
weak grip
1 mm 1129 Gs
112.9 mT
0.31 kg / 0.69 pounds
312.8 g / 3.1 N
weak grip
2 mm 905 Gs
90.5 mT
0.20 kg / 0.44 pounds
201.0 g / 2.0 N
weak grip
3 mm 683 Gs
68.3 mT
0.11 kg / 0.25 pounds
114.5 g / 1.1 N
weak grip
5 mm 366 Gs
36.6 mT
0.03 kg / 0.07 pounds
32.9 g / 0.3 N
weak grip
10 mm 92 Gs
9.2 mT
0.00 kg / 0.00 pounds
2.1 g / 0.0 N
weak grip
15 mm 33 Gs
3.3 mT
0.00 kg / 0.00 pounds
0.3 g / 0.0 N
weak grip
20 mm 15 Gs
1.5 mT
0.00 kg / 0.00 pounds
0.1 g / 0.0 N
weak grip
30 mm 5 Gs
0.5 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip
50 mm 1 Gs
0.1 mT
0.00 kg / 0.00 pounds
0.0 g / 0.0 N
weak grip

Table 2: Slippage hold (vertical surface)
MW 9.5x1 zestaw 4000 szt. / N38

Distance (mm) Friction coefficient Pull Force (kg/lbs/g/N)
0 mm Raw steel (µ ≈ 0.2) 0.08 kg / 0.18 pounds
80.0 g / 0.8 N
1 mm Raw steel (µ ≈ 0.2) 0.06 kg / 0.14 pounds
62.0 g / 0.6 N
2 mm Raw steel (µ ≈ 0.2) 0.04 kg / 0.09 pounds
40.0 g / 0.4 N
3 mm Raw steel (µ ≈ 0.2) 0.02 kg / 0.05 pounds
22.0 g / 0.2 N
5 mm Raw steel (µ ≈ 0.2) 0.01 kg / 0.01 pounds
6.0 g / 0.1 N
10 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
15 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
20 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
30 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N
50 mm Raw steel (µ ≈ 0.2) 0.00 kg / 0.00 pounds
0.0 g / 0.0 N

Table 3: Wall mounting (sliding) - vertical pull
MW 9.5x1 zestaw 4000 szt. / N38

Surface type Friction coefficient / % Max load (kg/lbs/g/N)
Raw steel
µ = 0.3 30% of nominal force
0.12 kg / 0.26 pounds
120.0 g / 1.2 N
Painted steel (standard)
µ = 0.2 20% of nominal force
0.08 kg / 0.18 pounds
80.0 g / 0.8 N
Oily/slippery steel
µ = 0.1 10% of nominal force
0.04 kg / 0.09 pounds
40.0 g / 0.4 N
Magnet with anti-slip rubber
µ = 0.5 50% of nominal force
0.20 kg / 0.44 pounds
200.0 g / 2.0 N

Table 4: Material efficiency (substrate influence) - sheet metal selection
MW 9.5x1 zestaw 4000 szt. / N38

Steel thickness (mm) % power Real pull force (kg/lbs/g/N)
0.5 mm
10%
0.04 kg / 0.09 pounds
40.0 g / 0.4 N
1 mm
25%
0.10 kg / 0.22 pounds
100.0 g / 1.0 N
2 mm
50%
0.20 kg / 0.44 pounds
200.0 g / 2.0 N
3 mm
75%
0.30 kg / 0.66 pounds
300.0 g / 2.9 N
5 mm
100%
0.40 kg / 0.88 pounds
400.0 g / 3.9 N
10 mm
100%
0.40 kg / 0.88 pounds
400.0 g / 3.9 N
11 mm
100%
0.40 kg / 0.88 pounds
400.0 g / 3.9 N
12 mm
100%
0.40 kg / 0.88 pounds
400.0 g / 3.9 N

Table 5: Thermal resistance (stability) - resistance threshold
MW 9.5x1 zestaw 4000 szt. / N38

Magnet temperature (°C) Force change relative to 20°C Remaining pull (kg/lbs/g/N) Status
20 °C 0.0% 0.40 kg / 0.88 pounds
400.0 g / 3.9 N
Estimate
40 °C -4.4% 0.38 kg / 0.84 pounds
382.6 g / 3.8 N
Estimate
60 °C -8.6% 0.37 kg / 0.81 pounds
365.6 g / 3.6 N
Estimate
80 °C -12.8% 0.35 kg / 0.77 pounds
348.9 g / 3.4 N
Material limit
100 °C — — Out of range — no model

Table 6: Two magnets (repulsion) - field collision
MW 9.5x1 zestaw 4000 szt. / N38

Gap (mm) Attraction (kg/lbs) (N-S) Sliding Force (kg/lbs/g/N) Repulsion (kg/lbs) (N-N)
0 mm 0.71 kg / 1.57 pounds
2 403 Gs
0.11 kg / 0.24 pounds
107 g / 1.0 N
N/A
1 mm 0.65 kg / 1.43 pounds
2 436 Gs
0.10 kg / 0.21 pounds
97 g / 1.0 N
0.58 kg / 1.29 pounds
~0 Gs
2 mm 0.56 kg / 1.23 pounds
2 257 Gs
0.08 kg / 0.18 pounds
84 g / 0.8 N
0.50 kg / 1.10 pounds
~0 Gs
3 mm 0.46 kg / 1.00 pounds
2 041 Gs
0.07 kg / 0.15 pounds
68 g / 0.7 N
0.41 kg / 0.90 pounds
~0 Gs
5 mm 0.27 kg / 0.60 pounds
1 580 Gs
0.04 kg / 0.09 pounds
41 g / 0.4 N
0.25 kg / 0.54 pounds
~0 Gs
10 mm 0.06 kg / 0.13 pounds
732 Gs
0.01 kg / 0.02 pounds
9 g / 0.1 N
0.05 kg / 0.12 pounds
~0 Gs
20 mm 0.00 kg / 0.01 pounds
183 Gs
0.00 kg / 0.00 pounds
1 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
50 mm 0.00 kg / 0.00 pounds
16 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
60 mm 0.00 kg / 0.00 pounds
10 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
70 mm 0.00 kg / 0.00 pounds
6 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
80 mm 0.00 kg / 0.00 pounds
4 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
90 mm 0.00 kg / 0.00 pounds
3 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs
100 mm 0.00 kg / 0.00 pounds
2 Gs
0.00 kg / 0.00 pounds
0 g / 0.0 N
0.00 kg / 0.00 pounds
~0 Gs

Table 7: Axial field levels — not safety zones
MW 9.5x1 zestaw 4000 szt. / N38

Field level (Gs) mT Model distance (cm)
< 5 Gs < 0.5 mT 3.0 cm
< 10 Gs < 1.0 mT 2.5 cm
< 20 Gs < 2.0 mT 2.0 cm
< 40 Gs < 4.0 mT 1.5 cm
< 50 Gs < 5.0 mT 1.5 cm
< 400 Gs < 40.0 mT 0.5 cm
< 600 Gs < 60.0 mT 0.5 cm

Table 8: Impact energy (cracking risk) - warning
MW 9.5x1 zestaw 4000 szt. / N38

Start from (mm) Speed (km/h) Energy (J) Predicted outcome
10 mm 0.34 km/h
(0.09 m/s)
0.01 J
30 mm 0.34 km/h
(0.09 m/s)
0.01 J
50 mm 0.34 km/h
(0.09 m/s)
0.01 J
100 mm 0.34 km/h
(0.09 m/s)
0.01 J

Table 9: Corrosion resistance
MW 9.5x1 zestaw 4000 szt. / 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: Construction data (Pc)
MW 9.5x1 zestaw 4000 szt. / N38

Parameter Value SI Unit / Description
Magnetic Flux 1 184 Mx 11.8 µWb
Pc Coefficient 0.16 Low (Flat)

Table 11: Hydrostatics and buoyancy
MW 9.5x1 zestaw 4000 szt. / N38

Environment Effective steel pull Effect
Air (land) 0.40 kg Standard
Water (riverbed) 0.46 kg
(+0.06 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!

1. Wall mount (shear)

*Note: On a vertical surface, the magnet retains just a fraction of its perpendicular strength.

2. Steel thickness impact

*Thin steel (e.g. 0.5mm PC case) drastically reduces the holding force.

3. Temperature resistance

N38: the maximum material working temperature is 80°C. Permitted conditions also depend on the shape and magnetic circuit.

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

chart generated for the permeance coefficient Pc (Permeance Coefficient) = 0.16

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.

Engineering data and GPSR

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: 010557-2026
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Magnet pull force


Magnetic Field

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This product is an extremely powerful rod magnet, composed of modern NdFeB material, which, with dimensions of Ø9.5x1 mm, guarantees maximum efficiency. This specific item is characterized by high dimensional repeatability and industrial build quality, making it an ideal solution for the most demanding engineers and designers. As a cylindrical magnet with impressive force (approx. 0.40 kg), this product is in stock from our European logistics center, ensuring quick order fulfillment. Furthermore, its Ni-Cu-Ni coating shields it against corrosion in standard operating conditions, ensuring an aesthetic appearance and durability for years.
It finds application in DIY projects, advanced robotics, and broadly understood industry, serving as a positioning or actuating element. Thanks to the high power of 3.96 N with a weight of only 2120 g, this rod is indispensable in electronics and wherever low weight is crucial.
Since our magnets have a very precise dimensions, the recommended way is to glue them into holes with a slightly larger diameter (e.g., 9.5.1 mm) using epoxy glues. To ensure stability in automation, specialized industrial adhesives are used, which are safe for nickel and fill the gap, guaranteeing high repeatability of the connection.
Choose the material grade together with the dimensions and working conditions. A grade designation alone does not determine the pull force of the finished magnet. Check the properties and working temperature of this specific model on its product card; contact us before ordering for an unusual application.
The presented product is a neodymium magnet with precisely defined parameters: diameter 9.5 mm and height 1 mm. The value of 3.96 N means that the magnet is capable of holding a weight many times exceeding its own mass of 2120 g. 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 1 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.

Advantages and disadvantages of neodymium magnets.

Strengths

Besides their remarkable field intensity, neodymium magnets offer the following advantages:
  • They do not lose strength, even after nearly ten years – the decrease in lifting capacity is only ~1% (based on measurements),
  • They possess excellent resistance to magnetism drop due to opposing magnetic fields,
  • In other words, due to the shiny surface of nickel, the element becomes visually attractive,
  • Magnets exhibit huge magnetic induction on the outer layer,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of custom machining as well as adapting to atypical conditions,
  • Significant place in innovative solutions – they are used in hard drives, brushless drives, precision medical tools, also other advanced devices.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Weaknesses

Problematic aspects of neodymium magnets and proposals for their use:
  • At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • They rust in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • We suggest cover - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
  • Possible danger to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Furthermore, small components of these products can be problematic in diagnostics medical when they are in the body.
  • With large orders the cost of neodymium magnets is a challenge,

Pull force analysis

Highest magnetic holding force – what affects it?

The load parameter shown represents the peak performance, recorded under optimal environment, meaning:
  • using a sheet made of mild steel, acting as a magnetic yoke
  • whose thickness equals approx. 10 mm
  • with a plane free of scratches
  • without any insulating layer between the magnet and steel
  • during detachment in a direction perpendicular to the mounting surface
  • at room temperature

Lifting capacity in real conditions – factors

Effective lifting capacity impacted by specific conditions, including (from most important):
  • Distance (between the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) can cause a decrease in force by up to 50% (this also applies to varnish, corrosion or debris).
  • Force direction – catalog parameter refers to pulling vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of maximum force).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Material composition – not every steel reacts the same. High carbon content weaken the attraction effect.
  • Surface quality – the smoother and more polished the surface, the larger the contact zone and higher the lifting capacity. Unevenness creates an air distance.
  • Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).

Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, in contrast under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the load capacity.

Warnings
Keep away from computers

Do not bring magnets near a purse, computer, or screen. The magnetic field can destroy these devices and wipe information from cards.

Respect the power

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.

Crushing force

Watch your fingers. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!

Combustion hazard

Mechanical processing of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is difficult to extinguish.

Threat to navigation

A strong magnetic field interferes with the operation of compasses in smartphones and navigation systems. Do not bring magnets close to a smartphone to avoid damaging the sensors.

Danger to the youngest

Always keep magnets out of reach of children. Ingestion danger is significant, and the consequences of magnets connecting inside the body are very dangerous.

Medical interference

Individuals with a pacemaker have to maintain an safe separation from magnets. The magnetism can interfere with the operation of the implant.

Permanent damage

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Magnets are brittle

Despite metallic appearance, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.

Skin irritation risks

Nickel alert: The Ni-Cu-Ni coating consists of nickel. If skin irritation occurs, cease working with magnets and wear gloves.

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