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UMS 60x18x8.5x15 / N38 - conical magnetic holder

conical magnetic holder

Catalog no 220404

GTIN/EAN: 5906301814238

5.00
Load capacity 112.00 kg / 1098.34 N
Diameter Ø
60 mm [±1 mm]
cone dimension Ø
18x8.5 mm [±1 mm]
Height
15 mm [±1 mm]
Weight
250 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
view technical specifications »

62.78 zł with VAT / pcs + price for transport

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Parameters as well as shape of a neodymium magnet can be tested with our our magnetic calculator.

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Physical properties - UMS 60x18x8.5x15 / N38 - conical magnetic holder

Specification / characteristics - UMS 60x18x8.5x15 / N38 - conical magnetic holder

properties
properties values
Cat. no. 220404
GTIN/EAN 5906301814238
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 Ø 60 mm [±1 mm]
cone dimension Ø 18x8.5 mm [±1 mm]
Height 15 mm [±1 mm]
Weight 250 g
Magnetization Direction ↑ axial
Load capacity ~ ? 112.00 kg / 1098.34 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMS 60x18x8.5x15 / N38 - conical 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

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: 220404-2026
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This type of holder is perfect for mounting magnetic latches in cabinets, doors, and flaps. The ability to flush the screw with the magnet surface allows for perfect closing without gaps. The steel cup strengthens the magnet force and protects it from cracking upon impact.
Neodymium magnets are sintered ceramics, which means they are very hard but also brittle. Avoid forceful tightening when you feel resistance. The screw head should not protrude above the magnet surface, but it cannot burst it either.
For two magnets screwed with cones facing each other (faces) to attract, they must have different polarity. If you need a pair, ask about availability of complementary sets or check the description. A set of magnet + plate is cheaper and holds just as strongly.
The declared capacity (e.g., 112.00 kg) refers to the perpendicular force needed to detach the magnet from thick steel. In practice, when mounted on a wall (shear force), the magnet will hold significantly less (approx. 20-30% of nominal). Paint or veneer on metal also reduces effective attraction force.
Thanks to the metal cup, the magnetic field is concentrated on the active side, which significantly increases force. It is a more durable and safer solution in everyday use than a bare ring. The countersunk holder is a professional mounting solution with increased durability.

Pros as well as cons of neodymium magnets.

Benefits

Besides their stability, neodymium magnets are valued for these benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
  • They are resistant to demagnetization induced by external field influence,
  • By applying a decorative layer of silver, the element presents an proper look,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
  • Thanks to flexibility in shaping and the ability to customize to individual projects,
  • Key role in electronics industry – they are utilized in data components, electromotive mechanisms, medical devices, and complex engineering applications.
  • Thanks to their power density, small magnets offer high operating force, occupying minimum space,

Cons

Disadvantages of NdFeB magnets:
  • At 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 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
  • 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 prevent oxidation and corrosion.
  • We recommend cover - magnetic mechanism, due to difficulties in creating threads inside the magnet and complex forms.
  • Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the context of child safety. Furthermore, small components of these devices can be problematic in diagnostics medical in case of swallowing.
  • High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which hinders application in large quantities

Lifting parameters

Maximum magnetic pulling force – what it depends on?

The load parameter shown refers to the limit force, recorded under laboratory conditions, specifically:
  • using a plate made of mild steel, acting as a magnetic yoke
  • whose transverse dimension reaches at least 10 mm
  • with an ground touching surface
  • under conditions of no distance (surface-to-surface)
  • for force applied at a right angle (in the magnet axis)
  • in stable room temperature

Practical aspects of lifting capacity – factors

Real force is affected by specific conditions, mainly (from priority):
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Angle of force application – maximum parameter is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
  • Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
  • Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
  • Heat – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, however under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet and the plate decreases the load capacity.

Safety rules for work with neodymium magnets
Do not overheat magnets

Avoid heat. Neodymium magnets are susceptible to temperature. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Respect the power

Handle magnets consciously. Their powerful strength can surprise even experienced users. Be vigilant and do not underestimate their force.

Medical interference

Patients with a heart stimulator must keep an absolute distance from magnets. The magnetic field can disrupt the functioning of the implant.

Phone sensors

A strong magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.

Avoid contact if allergic

Certain individuals experience a contact allergy to Ni, which is the common plating for neodymium magnets. Frequent touching can result in skin redness. We suggest wear safety gloves.

Fragile material

Beware of splinters. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.

Electronic hazard

Equipment safety: Neodymium magnets can ruin payment cards and sensitive devices (heart implants, hearing aids, timepieces).

This is not a toy

Always store magnets out of reach of children. Ingestion danger is high, and the consequences of magnets connecting inside the body are fatal.

Finger safety

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

Flammability

Dust generated during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

Danger! Need more info? Read our article: Why are neodymium magnets dangerous?