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neodymium magnets

We provide red color magnets Nd2Fe14B - our store's offer. Practically all magnesy neodymowe on our website are available for immediate delivery (check the list). Check out the magnet pricing for more details see the magnet price list

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  3. ext. thread holder umgz 75x34x18 [m10] gz / n38
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UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190417

GTIN/EAN: 5906301813880

5.00

Diameter Ø

75 mm [±1 mm]

Height

34 mm [±1 mm]

Height

18 mm [±1 mm]

Weight

475 g

Load capacity

162.00 kg / 1588.68 N

189.42 ZŁ with VAT / pcs + price for transport

154.00 ZŁ net + 23% VAT / pcs

bulk discounts:

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Specifications and shape of a neodymium magnet can be analyzed on our magnetic calculator.

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UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

Specification / characteristics UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190417
GTIN/EAN 5906301813880
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 75 mm [±1 mm]
Height 34 mm [±1 mm]
Height 18 mm [±1 mm]
Weight 475 g
Load capacity ~ ? 162.00 kg / 1588.68 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread
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: 190417-2025
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It is a ready-made mounting element that allows quick creation of a magnetic point. Just pass the thread through the hole in the element and tighten the nut on the other side. They are commonly used in machine building, exhibition stands, lighting, and advertising.
Too strong tightening with a wrench can cause the stud to rotate in the cup or strip the thread. When assembling, use a torque wrench or tighten with feeling. The construction is durable and adapted to industrial conditions.
Above this temperature, the magnet may irreversibly lose some of its power. We also offer holders made of ferrite magnets (resistant up to 200°C) or special high-temperature versions. Avoid mounting directly on hot engine or machine components.
Thread size (e.g., M6) is always given in the product name and technical specification. Exact screw dimensions can be found in the product technical table. The thread is made of galvanized steel, ensuring corrosion resistance.
Yes, the steel housing (cup) focuses the magnetic field, significantly increasing attraction force on the active side. This force drops very quickly with increasing distance (air gap).

Advantages and disadvantages of rare earth magnets.

Advantages
In addition to their pulling strength, neodymium magnets provide the following advantages:
  • They retain attractive force for nearly 10 years – the loss is just ~1% (based on simulations),
  • They do not lose their magnetic properties even under external field action,
  • Thanks to the shiny finish, the surface of Ni-Cu-Ni, gold, or silver-plated gives an professional appearance,
  • They feature high magnetic induction at the operating surface, making them more effective,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
  • Possibility of exact forming and optimizing to atypical conditions,
  • Versatile presence in future technologies – they are commonly used in HDD drives, drive modules, medical equipment, and complex engineering applications.
  • Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Limitations
Cons of neodymium magnets: weaknesses and usage proposals
  • At strong impacts they can break, therefore we advise placing them in special holders. 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 strength. Often, when the temperature exceeds 80°C, their strength 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 start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
  • Due to limitations in realizing nuts and complex shapes in magnets, we recommend using a housing - magnetic mount.
  • Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, small components of these products can disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Pull force analysis

Magnetic strength at its maximum – what affects it?
The specified lifting capacity represents the maximum value, measured under laboratory conditions, namely:
  • with the application of a yoke made of low-carbon steel, guaranteeing maximum field concentration
  • possessing a thickness of minimum 10 mm to avoid saturation
  • with a plane cleaned and smooth
  • without the slightest insulating layer between the magnet and steel
  • during detachment in a direction perpendicular to the plane
  • in neutral thermal conditions
Key elements affecting lifting force
Holding efficiency is influenced by specific conditions, such as (from most important):
  • Distance – existence of foreign body (rust, dirt, air) acts as an insulator, which lowers power steeply (even by 50% at 0.5 mm).
  • Force direction – declared lifting capacity refers to detachment vertically. When slipping, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Plate thickness – too thin plate causes magnetic saturation, causing part of the flux to be lost to the other side.
  • Material composition – different alloys reacts the same. Alloy additives weaken the interaction with the magnet.
  • Base smoothness – the more even the plate, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
  • Thermal environment – heating the magnet causes a temporary drop of force. It is worth remembering the thermal limit for a given model.

Lifting capacity was assessed with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the holding force is lower. Moreover, even a small distance between the magnet and the plate decreases the holding force.

Safe handling of neodymium magnets
Threat to navigation

Navigation devices and mobile phones are extremely sensitive to magnetic fields. Direct contact with a strong magnet can ruin the sensors in your phone.

Fire risk

Fire hazard: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Allergic reactions

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If your skin reacts to metals, refrain from direct skin contact or select versions in plastic housing.

Protect data

Very strong magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Maintain a gap of min. 10 cm.

Adults only

Product intended for adults. Small elements can be swallowed, causing serious injuries. Keep out of reach of kids and pets.

Protective goggles

NdFeB magnets are sintered ceramics, meaning they are very brittle. Impact of two magnets will cause them breaking into shards.

Handling rules

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

ICD Warning

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.

Do not overheat magnets

Regular neodymium magnets (N-type) lose power when the temperature surpasses 80°C. Damage is permanent.

Crushing force

Big blocks can crush fingers instantly. Never put your hand betwixt two strong magnets.

Safety First! Need more info? Read our article: Are neodymium magnets dangerous?
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98