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Neodymium magnets – strongest on the market

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UMC 60x9/5x15 / N38 - cylindrical magnetic holder

cylindrical magnetic holder

Catalog no 320413

GTIN/EAN: 5906301814696

Diameter

60 mm [±1 mm]

internal diameter Ø

9/5 mm [±1 mm]

Height

15 mm [±1 mm]

Weight

240 g

Load capacity

95.00 kg / 931.63 N

Coating

[NiCuNi] Nickel

see specifications »

64.94 ZŁ with VAT / pcs + price for transport

52.80 ZŁ net + 23% VAT / pcs

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Force as well as structure of magnets can be calculated on our our magnetic calculator.

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Technical data - UMC 60x9/5x15 / N38 - cylindrical magnetic holder

Specification / characteristics - UMC 60x9/5x15 / N38 - cylindrical magnetic holder

properties
properties values
Cat. no. 320413
GTIN/EAN 5906301814696
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 60 mm [±1 mm]
internal diameter Ø 9/5 mm [±1 mm]
Height 15 mm [±1 mm]
Weight 240 g
Load capacity ~ ? 95.00 kg / 931.63 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMC 60x9/5x15 / 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 and environmental data
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%
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: 320413-2026
Quick Unit Converter
Pulling force
Field Strength
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They are characterized by point action of the magnetic field exclusively on the front surface. Used where the magnet must be hidden deep in the material or precisely positioned.
It can also be glued or pressed (maintaining tolerance) into a prepared hole. It is a precise, durable solution enabling depth adjustment.
The thick, steel or brass housing (sleeve) effectively screens the magnetic field on the sides of the holder. 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. 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). For mounting certainty and centering, gluing or screw fastening from the back is used.

Strengths as well as weaknesses of rare earth magnets.

Pros

Besides their immense pulling force, neodymium magnets offer the following advantages:
  • They do not lose magnetism, even after approximately ten years – the decrease in power is only ~1% (based on measurements),
  • Magnets effectively defend themselves against demagnetization caused by foreign field sources,
  • The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Magnetic induction on the surface of the magnet turns out to be maximum,
  • 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 flexibility in forming and the ability to customize to complex applications,
  • Huge importance in high-tech industry – they serve a role in computer drives, electric motors, medical devices, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in compact dimensions, which makes them useful in compact constructions

Weaknesses

Disadvantages of neodymium magnets:
  • At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
  • When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size, as well as 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. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation and corrosion.
  • Due to limitations in producing nuts and complicated shapes in magnets, we recommend using cover - magnetic mount.
  • Health risk resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the context of child safety. It is also worth noting that small components of these devices are able to complicate diagnosis medical in case of swallowing.
  • Due to neodymium price, their price exceeds standard values,

Holding force characteristics

Maximum lifting force for a neodymium magnet – what contributes to it?

Magnet power is the result of a measurement for ideal contact conditions, taking into account:
  • on a plate made of mild steel, optimally conducting the magnetic field
  • with a cross-section minimum 10 mm
  • characterized by even structure
  • without the slightest air gap between the magnet and steel
  • under perpendicular force direction (90-degree angle)
  • in stable room temperature

Practical aspects of lifting capacity – factors

Effective lifting capacity impacted by working environment parameters, such as (from most important):
  • Clearance – existence of foreign body (rust, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
  • Force direction – remember that the magnet holds strongest perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
  • Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Chemical composition of the base – mild steel gives the best results. Alloy admixtures decrease magnetic properties and holding force.
  • Surface quality – the more even the plate, the better the adhesion and stronger the hold. Unevenness acts like micro-gaps.
  • Temperature – temperature increase results in weakening of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under perpendicular forces, however under shearing force the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate decreases the holding force.

Safe handling of NdFeB magnets
Respect the power

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

Nickel coating and allergies

Studies show that nickel (standard magnet coating) is a strong allergen. For allergy sufferers, prevent direct skin contact or select encased magnets.

Phone sensors

GPS units and mobile phones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.

Electronic hazard

Avoid bringing magnets near a wallet, laptop, or TV. The magnetic field can irreversibly ruin these devices and erase data from cards.

Fire warning

Dust created during cutting of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Finger safety

Pinching hazard: The attraction force is so great that it can result in hematomas, crushing, and broken bones. Use thick gloves.

Permanent damage

Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its properties and pulling force.

Beware of splinters

Neodymium magnets are sintered ceramics, which means they are fragile like glass. Impact of two magnets will cause them shattering into shards.

Keep away from children

Strictly keep magnets away from children. Ingestion danger is significant, and the effects of magnets connecting inside the body are tragic.

Medical implants

Life threat: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Warning! 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