e-mail: bok@dhit.pl

Neodymium magnets: power you're looking for

Looking for huge power in small size? We offer rich assortment of disc, cylindrical and ring magnets. They are ideal for domestic applications, garage and model making. Check our offer in stock.

discover full offer

Equipment for treasure hunters

Discover your passion with treasure salvaging! Our specialized grips (F200, F400) provide safety guarantee and immense power. Stainless steel construction and strong lines are reliable in rivers and lakes.

choose searching equipment

Magnetic mounts for industry

Proven solutions for mounting without drilling. Threaded grips (external or internal) provide quick improvement of work on production halls. Perfect for mounting lighting, sensors and ads.

see technical specs

📦 Fast shipping: buy by 14:00, we'll ship today!

Dhit sp. z o.o.
Product available Ships tomorrow

UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180319

GTIN/EAN: 5906301813750

5.00

Diameter Ø

36 mm [±1 mm]

Height

18 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

52 g

Load capacity

40.00 kg / 392.27 N

23.99 with VAT / pcs + price for transport

19.50 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
19.50 ZŁ
23.99 ZŁ
price from 20 pcs
18.33 ZŁ
22.55 ZŁ
price from 80 pcs
17.16 ZŁ
21.11 ZŁ
Want to talk magnets?

Pick up the phone and ask +48 888 99 98 98 alternatively get in touch through our online form the contact form page.
Parameters as well as shape of a magnet can be calculated using our our magnetic calculator.

Orders submitted before 14:00 will be dispatched today!

Technical details - UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

Specification / characteristics - UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

properties
properties values
Cat. no. 180319
GTIN/EAN 5906301813750
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 36 mm [±1 mm]
Height 18 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 52 g
Load capacity ~ ? 40.00 kg / 392.27 N
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal 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%
Sustainability
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: 180319-2025
Magnet Unit Converter
Magnet pull force

Magnetic Field

View also proposals

The steel cup acts as an armature, concentrating the magnetic flux and increasing capacity even several times. Moreover, the metal housing protects the brittle neodymium magnet from cracking upon impact. The threaded hole allows creating a functional mounting point in seconds.
The most important rule is choosing the appropriate length of the screw being screwed in. We recommend checking thread depth before assembly and shortening the screw if necessary. You can use a spacer washer or lock nut to limit screwing depth.
They are used for fixing sensors, lamps, rating plates, machine guards, and installations. They enable creating demountable connections that can be easily moved. Ideal for fixing lighting on machine tools and welding tables.
This value applies to perfect adherence with the entire magnet surface. Air gap (rust, paint, dirt) also drastically lowers holding power. For side detachment (sliding), the force is only approx. 1/3 of nominal capacity.
Steel cups are usually coated with a layer of nickel (shiny) or zinc (matte/bright), providing basic protection. However, these are not fully stainless products and may corrode with constant contact with water. The whole is well protected for standard workshop and industrial applications.

Strengths as well as weaknesses of rare earth magnets.

Pros

Besides their durability, neodymium magnets are valued for these benefits:
  • They do not lose power, even after around 10 years – the reduction in strength is only ~1% (according to tests),
  • They possess excellent resistance to magnetism drop when exposed to external fields,
  • A magnet with a metallic nickel surface is more attractive,
  • Magnetic induction on the surface of the magnet turns out to be exceptional,
  • Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
  • Thanks to the option of accurate shaping and adaptation to specialized requirements, NdFeB magnets can be produced in a broad palette of geometric configurations, which increases their versatility,
  • Universal use in modern industrial fields – they are used in magnetic memories, brushless drives, diagnostic systems, and modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in miniature devices

Weaknesses

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
  • Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
  • Due to limitations in producing threads and complex forms in magnets, we propose using a housing - magnetic mount.
  • Possible danger to health – tiny shards of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, tiny parts of these magnets 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 increases costs of application in large quantities

Holding force characteristics

Best holding force of the magnet in ideal parameterswhat contributes to it?

Breakaway force is the result of a measurement for ideal contact conditions, taking into account:
  • on a plate made of mild steel, effectively closing the magnetic flux
  • with a cross-section no less than 10 mm
  • with an polished touching surface
  • under conditions of ideal adhesion (surface-to-surface)
  • during detachment in a direction vertical to the plane
  • at conditions approx. 20°C

Practical lifting capacity: influencing factors

Bear in mind that the working load will differ subject to the following factors, starting with the most relevant:
  • Distance (between the magnet and the plate), since even a very small distance (e.g. 0.5 mm) leads to a reduction in force by up to 50% (this also applies to varnish, corrosion or dirt).
  • Load vector – highest force is available only during perpendicular pulling. The shear force of the magnet along the plate is typically many times smaller (approx. 1/5 of the lifting capacity).
  • Plate thickness – too thin steel does not accept the full field, causing part of the power to be lost into the air.
  • Material composition – different alloys reacts the same. Alloy additives worsen the attraction effect.
  • Plate texture – smooth surfaces ensure maximum contact, which increases field saturation. Rough surfaces reduce efficiency.
  • Thermal factor – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

Lifting capacity was measured with the use of a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the lifting capacity is smaller. In addition, even a minimal clearance between the magnet and the plate decreases the load capacity.

Safe handling of NdFeB magnets
Respect the power

Before starting, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.

Nickel allergy

Medical facts indicate that the nickel plating (standard magnet coating) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands or opt for encased magnets.

Do not give to children

Always store magnets away from children. Ingestion danger is high, and the effects of magnets clamping inside the body are tragic.

Heat warning

Watch the temperature. Exposing the magnet to high heat will permanently weaken its properties and strength.

Fragile material

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets will cause them breaking into shards.

Warning for heart patients

Health Alert: Neodymium magnets can deactivate heart devices and defibrillators. Stay away if you have electronic implants.

Do not drill into magnets

Powder produced during machining of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Crushing force

Large magnets can smash fingers instantly. Under no circumstances put your hand between two strong magnets.

Safe distance

Intense magnetic fields can corrupt files on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Keep away from electronics

Navigation devices and mobile phones are highly susceptible to magnetic fields. Close proximity with a strong magnet can ruin the internal compass in your phone.

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

e-mail: bok@dhit.pl

tel: +48 888 99 98 98