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UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180420

GTIN/EAN: 5906301813798

5.00

Diameter Ø

75 mm [±1 mm]

Height

33 mm [±1 mm]

Height

18 mm [±1 mm]

Weight

475 g

Magnetization Direction

↑ axial

Load capacity

162.00 kg / 1588.68 N

Coating

[NiCuNi] Nickel

technical details »

189.91 ZŁ with VAT / pcs + price for transport

154.40 ZŁ net + 23% VAT / pcs

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Force along with structure of magnetic components can be reviewed on our force calculator.

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Physical properties - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

Specification / characteristics - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread

properties
properties values
Cat. no. 180420
GTIN/EAN 5906301813798
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 33 mm [±1 mm]
Height 18 mm [±1 mm]
Weight 475 g
Magnetization Direction ↑ axial
Load capacity ~ ? 162.00 kg / 1588.68 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 75x33x18 [M10] 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
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%
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: 180420-2026
Magnet Unit Converter
Force (pull)
Magnetic Induction
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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). Thanks to this, the holder is more durable, resistant, and safer to mount. The bushing with internal thread allows easy screwing of any element (bolt, hook, handle).
Too long a screw can pass through the bushing and push out or damage the magnet glued into the bottom of the cup. We recommend checking thread depth before assembly and shortening the screw if necessary. It is worth securing the thread with thread glue if the connection is to be durable and resistant to vibrations.
They are used for fixing sensors, lamps, rating plates, machine guards, and installations. They enable creating demountable connections that can be easily moved. In the workshop, they can serve as mounting points for tools or measuring instruments.
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.
Standard coating effectively protects against moisture in indoor conditions. For outdoor applications, we recommend additional protection with varnish or choosing a rubberized (hermetic) version. The neodymium magnet itself inside is also nickel-plated.

Pros and cons of neodymium magnets.

Pros

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • Their power remains stable, and after approximately 10 years it decreases only by ~1% (according to research),
  • Magnets perfectly defend themselves against loss of magnetization caused by foreign field sources,
  • A magnet with a metallic silver surface has better aesthetics,
  • Neodymium magnets create maximum magnetic induction on a contact point, which increases force concentration,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • Possibility of custom modeling and adapting to precise applications,
  • Versatile presence in innovative solutions – they find application in data components, electromotive mechanisms, precision medical tools, and complex engineering applications.
  • Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,

Limitations

Characteristics of disadvantages of neodymium magnets: tips and applications.
  • Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
  • NdFeB magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (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
  • Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
  • We suggest a housing - magnetic mechanism, due to difficulties in creating threads inside the magnet and complicated forms.
  • Possible danger resulting from small fragments of magnets are risky, if swallowed, which becomes key in the context of child safety. It is also worth noting that small components of these products are able to complicate diagnosis medical when they are in the body.
  • Due to neodymium price, their price exceeds standard values,

Lifting parameters

Highest magnetic holding force – what it depends on?

The load parameter shown refers to the limit force, obtained under laboratory conditions, meaning:
  • using a sheet made of low-carbon steel, functioning as a ideal flux conductor
  • possessing a thickness of at least 10 mm to avoid saturation
  • with an ground touching surface
  • under conditions of no distance (metal-to-metal)
  • during pulling in a direction vertical to the mounting surface
  • at standard ambient temperature

Practical aspects of lifting capacity – factors

In real-world applications, the actual holding force is determined by several key aspects, presented from most significant:
  • Gap (between the magnet and the plate), as even a very small distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to varnish, rust or dirt).
  • Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (typically approx. 20-30% of nominal force).
  • Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content weaken the interaction with the magnet.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, reducing force.
  • Heat – neodymium magnets have a sensitivity to temperature. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was measured with the use of a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

Safe handling of NdFeB magnets
Crushing force

Big blocks can smash fingers instantly. Under no circumstances place your hand betwixt two attracting surfaces.

Compass and GPS

Navigation devices and mobile phones are highly susceptible to magnetism. Close proximity with a strong magnet can decalibrate the sensors in your phone.

Fragile material

Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Do not overheat magnets

Monitor thermal conditions. Exposing the magnet above 80 degrees Celsius will permanently weaken its properties and pulling force.

Nickel coating and allergies

Medical facts indicate that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, avoid direct skin contact or opt for versions in plastic housing.

Conscious usage

Exercise caution. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can react.

Danger to the youngest

Neodymium magnets are not intended for children. Eating several magnets can lead to them connecting inside the digestive tract, which poses a severe health hazard and necessitates urgent medical intervention.

Implant safety

For implant holders: Strong magnetic fields affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.

Electronic devices

Data protection: Strong magnets can ruin payment cards and sensitive devices (pacemakers, medical aids, timepieces).

Dust explosion hazard

Combustion risk: Rare earth powder is explosive. Avoid machining magnets without safety gear as this risks ignition.

Warning! Want to know more? Read our article: Are neodymium magnets dangerous?