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UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180318

GTIN/EAN: 5906301813743

5.00

Diameter Ø

32 mm [±1 mm]

Height

18 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

42 g

Magnetization Direction

↑ axial

Load capacity

34.00 kg / 333.43 N

Coating

[NiCuNi] Nickel

technical specifications »

15.22 ZŁ with VAT / pcs + price for transport

12.37 ZŁ net + 23% VAT / pcs

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Specifications and structure of magnetic components can be tested using our modular calculator.

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Technical parameters of the product - UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

Specification / characteristics - UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

properties
properties values
Cat. no. 180318
GTIN/EAN 5906301813743
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 32 mm [±1 mm]
Height 18 mm [±1 mm]
Height 8 mm [±1 mm]
Weight 42 g
Magnetization Direction ↑ axial
Load capacity ~ ? 34.00 kg / 333.43 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 32x18x8 [M6] 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 and environmental data
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: 180318-2026
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The steel housing shields the magnetic field from the sides and top, directing all its power downwards (to the active side). Moreover, the metal housing protects the brittle neodymium magnet from cracking upon impact. The threaded hole allows creating a functional mounting point in seconds.
Care must be taken not to screw the bolt too deep into the magnet bushing. If the screw reaches the bottom of the bushing and is further tightened forcefully, it will destroy the magnet. It is worth securing the thread with thread glue if the connection is to be durable and resistant to vibrations.
These holders are commonly used in industry, advertising, and construction for quick mounting. They serve as a base for hooks, cable holders, organizers, and lighting systems. Ideal for fixing lighting on machine tools and welding tables.
Nominal capacity (for this model approx. 34.00 kg) is measured in ideal conditions: perpendicular detachment from thick steel (min. 10mm). With thin sheets (e.g., car body, fridge casing), the force will be much smaller because steel cannot absorb the entire magnetic field. We always recommend choosing a magnet with power reserve, especially if the surface is not ideal.
Standard coating effectively protects against moisture in indoor conditions. In rain and frost, the coating may degrade over time if not protected. The whole is well protected for standard workshop and industrial applications.

Strengths and weaknesses of Nd2Fe14B magnets.

Advantages

Apart from their strong magnetism, neodymium magnets have these key benefits:
  • Their magnetic field is maintained, and after approximately 10 years it drops only by ~1% (according to research),
  • They have excellent resistance to magnetic field loss when exposed to external magnetic sources,
  • Thanks to the smooth finish, the surface of nickel, gold-plated, or silver gives an aesthetic appearance,
  • The surface of neodymium magnets generates a unique magnetic field – this is one of their assets,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of exact forming and modifying to individual needs,
  • Fundamental importance in high-tech industry – they find application in magnetic memories, drive modules, medical devices, and multitasking production systems.
  • Thanks to efficiency per cm³, small magnets offer high operating force, in miniature format,

Disadvantages

Disadvantages of NdFeB magnets:
  • To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing threads and complicated forms in magnets, we recommend using casing - magnetic mount.
  • Health risk related to microscopic parts of magnets are risky, if swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these magnets are able to disrupt the diagnostic process medical when they are in 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?

Breakaway force is the result of a measurement for ideal contact conditions, assuming:
  • with the application of a yoke made of special test steel, ensuring maximum field concentration
  • possessing a thickness of at least 10 mm to ensure full flux closure
  • characterized by smoothness
  • with direct contact (no impurities)
  • during pulling in a direction perpendicular to the mounting surface
  • at ambient temperature room level

Lifting capacity in real conditions – factors

During everyday use, the actual holding force depends on many variables, presented from the most important:
  • Space between surfaces – even a fraction of a millimeter of distance (caused e.g. by veneer or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
  • Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits significantly lower power (often approx. 20-30% of nominal force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field penetrates through instead of generating force.
  • Material type – the best choice is high-permeability steel. Stainless steels may attract less.
  • Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Roughness creates an air distance.
  • Thermal factor – hot environment reduces magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. Additionally, even a small distance between the magnet’s surface and the plate decreases the holding force.

Precautions when working with neodymium magnets
Swallowing risk

These products are not intended for children. Accidental ingestion of several magnets can lead to them connecting inside the digestive tract, which constitutes a direct threat to life and necessitates immediate surgery.

Avoid contact if allergic

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If redness appears, cease handling magnets and use protective gear.

Medical interference

Warning for patients: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to handle the magnets.

Flammability

Dust created during machining of magnets is combustible. Avoid drilling into magnets unless you are an expert.

Respect the power

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

Fragile material

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

GPS Danger

Note: neodymium magnets produce a field that confuses sensitive sensors. Maintain a safe distance from your mobile, device, and GPS.

Keep away from computers

Equipment safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, timepieces).

Heat warning

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

Crushing risk

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

Security! Looking for details? Check our post: Are neodymium magnets dangerous?