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Product available Ships tomorrow

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
technical specifications »

21.49 zł with VAT / pcs + price for transport

17.47 zł net + 23% VAT / pcs

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Technical data - 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

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%

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: 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. Thanks to side shielding, they do not "catch" the walls of the mounting hole, which facilitates installation.
These holders usually have an internal thread (blind or through) on the back wall. Thanks to the long body, the magnet is stable in the hole and does not tilt.
The thick, steel or brass housing (sleeve) effectively screens the magnetic field on the sides of the holder. It enables precise point action without side interference.
The steel housing provides excellent mechanical protection for the brittle magnet against impacts. Suitable for working in difficult workshop and industrial conditions.
These holders are produced with standard tolerance for industrial magnets (usually ±0.1 mm or h6). It is an industrial product, not a precise machine element, although the execution is careful.

Pros and cons of rare earth magnets.

Benefits

Apart from their strong magnetic energy, neodymium magnets have these key benefits:
  • Their strength is maintained, and after approximately ten years it decreases only by ~1% (according to research),
  • Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
  • In other words, due to the smooth finish of gold, the element gains visual value,
  • Magnetic induction on the top side of the magnet is very high,
  • Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
  • Thanks to the possibility of precise shaping and adaptation to custom solutions, NdFeB magnets can be produced in a variety of shapes and sizes, which makes them more universal,
  • Versatile presence in innovative solutions – they are utilized in data components, electric drive systems, medical devices, also modern systems.
  • Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Limitations

Disadvantages of neodymium magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
  • When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
  • Magnets exposed to a humid environment can corrode. Therefore while using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited possibility of making threads in the magnet and complex shapes - recommended is a housing - magnetic holder.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the context of child safety. It is also worth noting that small components 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

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

The lifting capacity listed is a theoretical maximum value performed under the following configuration:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • whose transverse dimension reaches at least 10 mm
  • with a plane free of scratches
  • under conditions of ideal adhesion (metal-to-metal)
  • during pulling in a direction perpendicular to the mounting surface
  • at room temperature

Lifting capacity in practice – influencing factors

Please note that the working load will differ subject to elements below, in order of importance:
  • Clearance – existence of foreign body (rust, dirt, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Steel thickness – too thin sheet does not close the flux, causing part of the flux to be lost to the other side.
  • Steel grade – ideal substrate is high-permeability steel. Cast iron may generate lower lifting capacity.
  • Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Additionally, even a small distance between the magnet’s surface and the plate decreases the lifting capacity.

Precautions when working with neodymium magnets
Product not for children

Absolutely store magnets away from children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are fatal.

Bodily injuries

Protect your hands. Two large magnets will join instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Do not overheat magnets

Watch the temperature. Exposing the magnet to high heat will permanently weaken its magnetic structure and pulling force.

Nickel coating and allergies

Medical facts indicate that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and choose versions in plastic housing.

Conscious usage

Use magnets consciously. Their powerful strength can surprise even professionals. Stay alert and do not underestimate their power.

Medical interference

For implant holders: Powerful magnets disrupt electronics. Maintain minimum 30 cm distance or request help to work with the magnets.

Phone sensors

Navigation devices and smartphones are extremely susceptible to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

Material brittleness

Neodymium magnets are sintered ceramics, which means they are fragile like glass. Impact of two magnets leads to them breaking into small pieces.

Electronic hazard

Powerful magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Maintain a gap of at least 10 cm.

Dust is flammable

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

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