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UMC 16x5/2x5 / N38 - cylindrical magnetic holder

cylindrical magnetic holder

Catalog no 320406

GTIN/EAN: 5906301814627

5.00

Diameter

16 mm [±1 mm]

internal diameter Ø

5/2 mm [±1 mm]

Height

5 mm [±1 mm]

Weight

5.5 g

Load capacity

4.00 kg / 39.23 N

Coating

[NiCuNi] Nickel

check properties »

3.33 ZŁ with VAT / pcs + price for transport

2.71 ZŁ net + 23% VAT / pcs

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Parameters and form of magnetic components can be estimated on our force calculator.

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Product card - UMC 16x5/2x5 / N38 - cylindrical magnetic holder

Specification / characteristics - UMC 16x5/2x5 / N38 - cylindrical magnetic holder

properties
properties values
Cat. no. 320406
GTIN/EAN 5906301814627
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 16 mm [±1 mm]
internal diameter Ø 5/2 mm [±1 mm]
Height 5 mm [±1 mm]
Weight 5.5 g
Load capacity ~ ? 4.00 kg / 39.23 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMC 16x5/2x5 / 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%
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: 320406-2026
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Pulling force
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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. Thanks to the long body, the magnet is stable in the hole and does not tilt.
The construction causes the magnetic flux to short-circuit inside, making the sides practically non-magnetic. This is a key feature when mounting in steel sockets so the magnet doesn't "stick" to the hole walls during insertion.
The neodymium magnet is deeply embedded (glued) in a solid block of steel or brass, making it very resistant. 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 as well as cons of Nd2Fe14B magnets.

Advantages

Besides their exceptional magnetic power, neodymium magnets offer the following advantages:
  • They virtually do not lose power, because even after ten years the performance loss is only ~1% (in laboratory conditions),
  • Neodymium magnets are distinguished by exceptionally resistant to magnetic field loss caused by magnetic disturbances,
  • Thanks to the glossy finish, the layer of nickel, gold, or silver gives an aesthetic appearance,
  • The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of exact machining as well as adjusting to precise conditions,
  • Versatile presence in electronics industry – they are commonly used in computer drives, electromotive mechanisms, medical devices, also industrial machines.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in strength. 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
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation as well as corrosion.
  • Limited possibility of making nuts in the magnet and complex forms - preferred is casing - magnetic holder.
  • Potential hazard related to microscopic parts of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Furthermore, small components of these magnets are able to disrupt the diagnostic process medical after entering 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

Lifting parameters

Detachment force of the magnet in optimal conditions – what it depends on?

The load parameter shown refers to the maximum value, measured under laboratory conditions, namely:
  • using a plate made of low-carbon steel, functioning as a magnetic yoke
  • whose transverse dimension is min. 10 mm
  • with an polished touching surface
  • under conditions of gap-free contact (metal-to-metal)
  • under vertical force vector (90-degree angle)
  • at standard ambient temperature

Determinants of lifting force in real conditions

Holding efficiency impacted by working environment parameters, mainly (from most important):
  • Air gap (between the magnet and the metal), because even a microscopic clearance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to varnish, rust or debris).
  • Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
  • Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content weaken the attraction effect.
  • Surface finish – ideal contact is obtained only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
  • Temperature influence – high temperature reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.

Holding force was checked on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the holding force.

Precautions when working with neodymium magnets
Implant safety

Patients with a pacemaker must keep an safe separation from magnets. The magnetism can stop the functioning of the life-saving device.

Protect data

Do not bring magnets close to a wallet, computer, or screen. The magnetism can destroy these devices and erase data from cards.

GPS and phone interference

A strong magnetic field disrupts the operation of compasses in phones and GPS navigation. Do not bring magnets close to a device to avoid breaking the sensors.

Do not give to children

Neodymium magnets are not toys. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.

Nickel allergy

Certain individuals experience a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Frequent touching may cause skin redness. We suggest use safety gloves.

Handling rules

Handle magnets with awareness. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their power.

Beware of splinters

Despite the nickel coating, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Do not drill into magnets

Drilling and cutting of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Serious injuries

Large magnets can smash fingers in a fraction of a second. Under no circumstances place your hand betwixt two strong magnets.

Maximum temperature

Do not overheat. NdFeB magnets are susceptible to heat. If you require resistance above 80°C, inquire about special high-temperature series (H, SH, UH).

Security! More info about hazards in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98