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UMC 36x6/4X8 / N38 - cylindrical magnetic holder

cylindrical magnetic holder

Catalog no 320410

GTIN/EAN: 5906301814665

5.00
Load capacity 29.00 kg / 284.39 N
Diameter
36 mm [±1 mm]
internal diameter Ø
6/4 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
45 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
check parameters »

21.49 zł with VAT / pcs + price for transport

17.47 zł net + 23% VAT / pcs

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Give us a call +48 22 499 98 98 alternatively get in touch using our online form the contact form page.
Specifications as well as shape of neodymium magnets can be estimated using our magnetic mass calculator.

Orders placed before 14:00 will be shipped the same business day.

Detailed specification - UMC 36x6/4X8 / N38 - cylindrical magnetic holder

Specification / characteristics - UMC 36x6/4X8 / N38 - cylindrical magnetic holder

properties
properties values
Cat. no. 320410
GTIN/EAN 5906301814665
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 36 mm [±1 mm]
internal diameter Ø 6/4 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 45 g
Magnetization Direction ↑ axial
Load capacity ~ ? 29.00 kg / 284.39 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMC 36x6/4X8 / N38 - cylindrical magnetic holder
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 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%

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: 320410-2026
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These are magnets in the shape of a rod in a brass or steel sleeve, ideal for embedding in deep sockets. Used where the magnet must be hidden deep in the material or precisely positioned.
These holders usually have an internal thread (blind or through) on the back wall. It is a precise, durable solution enabling depth adjustment.
The construction causes the magnetic flux to short-circuit inside, making the sides practically non-magnetic. It increases attraction force in the magnet axis and facilitates assembly in ferromagnetic blocks.
The steel housing provides excellent mechanical protection for the brittle magnet against impacts. The risk of magnet cracking with normal use is minimal as it is shielded.
These holders are produced with standard tolerance for industrial magnets (usually ±0.1 mm or h6). If high precision is required, measure the specific batch with a caliper before machining sockets.

Advantages and disadvantages of neodymium magnets.

Benefits

Besides their stability, neodymium magnets are valued for these benefits:
  • They have constant strength, and over nearly 10 years their performance decreases symbolically – ~1% (in testing),
  • Neodymium magnets are distinguished by exceptionally resistant to demagnetization caused by external interference,
  • Thanks to the shiny finish, the coating of nickel, gold-plated, or silver-plated gives an elegant appearance,
  • Magnetic induction on the working part of the magnet is exceptional,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Possibility of custom creating and adapting to complex requirements,
  • Wide application in innovative solutions – they find application in mass storage devices, brushless drives, medical devices, as well as multitasking production systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which enables their usage in compact constructions

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture, in case of application outdoors
  • Limited possibility of making nuts in the magnet and complicated forms - preferred is cover - magnet mounting.
  • Potential hazard to health – tiny shards of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Additionally, small components of these devices can be problematic in diagnostics medical after entering the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities

Holding force characteristics

Best holding force of the magnet in ideal parameters – what it depends on?

The load parameter shown refers to the maximum value, measured under laboratory conditions, meaning:
  • on a base made of structural steel, effectively closing the magnetic field
  • whose thickness reaches at least 10 mm
  • with a surface cleaned and smooth
  • with total lack of distance (no paint)
  • during pulling in a direction vertical to the mounting surface
  • at room temperature

Practical lifting capacity: influencing factors

It is worth knowing that the working load may be lower influenced by elements below, in order of importance:
  • Distance – the presence of foreign body (paint, tape, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
  • Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Steel thickness – insufficiently thick sheet causes magnetic saturation, causing part of the power to be escaped to the other side.
  • Chemical composition of the base – mild steel gives the best results. Alloy steels decrease magnetic permeability and holding force.
  • Plate texture – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
  • 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).

Lifting capacity testing was performed on plates with a smooth surface of optimal thickness, under a perpendicular pulling force, whereas under parallel forces the holding force is lower. Moreover, even a minimal clearance between the magnet and the plate decreases the holding force.

Safety rules for work with NdFeB magnets
Dust is flammable

Mechanical processing of NdFeB material carries a risk of fire risk. Neodymium dust oxidizes rapidly with oxygen and is difficult to extinguish.

Fragile material

NdFeB magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.

Pinching danger

Big blocks can break fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.

Electronic hazard

Data protection: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, timepieces).

Impact on smartphones

GPS units and smartphones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.

Power loss in heat

Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. Damage is permanent.

Danger to the youngest

NdFeB magnets are not intended for children. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a critical condition and requires urgent medical intervention.

Allergy Warning

It is widely known that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or choose versions in plastic housing.

Respect the power

Use magnets consciously. Their immense force can shock even professionals. Stay alert and do not underestimate their force.

Health Danger

For implant holders: Powerful magnets affect medical devices. Maintain at least 30 cm distance or ask another person to work with the magnets.

Security! Details about hazards in the article: Safety of working with magnets.