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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
Load capacity 162.00 kg / 1588.68 N
Diameter Ø
75 mm [±1 mm]
Height
33 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel
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189.91 zł with VAT / pcs + price for transport

154.40 zł net + 23% VAT / pcs

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Parameters along with form of a neodymium magnet can be analyzed using our force calculator.

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Technical of the product - 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%

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: 180420-2026
Measurement Calculator

Magnet pull force

Field Strength

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A magnetic holder (magnet in a steel cup) is much stronger on one side than a bare magnet of the same dimensions. Moreover, the metal housing protects the brittle neodymium magnet from cracking upon impact. The threaded hole allows creating a functional mounting point in seconds.
Too long a screw can pass through the bushing and push out or damage the magnet glued into the bottom of the cup. If the screw reaches the bottom of the bushing and is further tightened forcefully, it will destroy the magnet. 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 allow mounting without drilling in steel substrate, which is crucial in rented spaces. 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. We always recommend choosing a magnet with power reserve, especially if the surface is not ideal.
The housing has anti-corrosion protection in the form of galvanic zinc or nickel plating. In rain and frost, the coating may degrade over time if not protected. The whole is well protected for standard workshop and industrial applications.

Advantages and disadvantages of neodymium magnets.

Benefits

In addition to their long-term stability, neodymium magnets provide the following advantages:
  • They do not lose strength, even over nearly 10 years – the drop in lifting capacity is only ~1% (theoretically),
  • Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
  • The use of an shiny coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
  • Neodymium magnets achieve maximum magnetic induction on a small area, which increases force concentration,
  • Thanks to resistance to high temperature, they are able to function (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in forming and the ability to adapt to client solutions,
  • Universal use in future technologies – they are utilized in computer drives, electromotive mechanisms, medical equipment, also technologically advanced constructions.
  • Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in compact constructions

Limitations

Disadvantages of neodymium magnets:
  • To avoid cracks upon strong impacts, we suggest using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • Neodymium magnets lose their force under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
  • They oxidize in a humid environment - during use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
  • Due to limitations in realizing nuts and complicated shapes in magnets, we propose using cover - magnetic holder.
  • Potential hazard resulting from small fragments of magnets can be dangerous, if swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these devices can disrupt the diagnostic process medical when they are in the body.
  • High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Holding force characteristics

Magnetic strength at its maximum – what contributes to it?

Magnet power was determined for the most favorable conditions, including:
  • with the application of a sheet made of low-carbon steel, ensuring full magnetic saturation
  • whose transverse dimension equals approx. 10 mm
  • characterized by lack of roughness
  • without the slightest air gap between the magnet and steel
  • under perpendicular force vector (90-degree angle)
  • at temperature room level

Magnet lifting force in use – key factors

Bear in mind that the magnet holding may be lower depending on the following factors, in order of importance:
  • Distance – the presence of any layer (paint, tape, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
  • Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (typically approx. 20-30% of nominal force).
  • Base massiveness – insufficiently thick plate causes magnetic saturation, causing part of the flux to be lost to the other side.
  • Steel type – mild steel gives the best results. Higher carbon content decrease magnetic permeability and lifting capacity.
  • Plate texture – ground elements guarantee perfect abutment, which increases force. Uneven metal weaken the grip.
  • Temperature influence – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.

Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular pulling force, whereas under parallel forces the load capacity is reduced by as much as 75%. In addition, even a small distance between the magnet’s surface and the plate decreases the load capacity.

Warnings
Safe distance

Device Safety: Strong magnets can damage data carriers and delicate electronics (pacemakers, medical aids, timepieces).

Physical harm

Big blocks can break fingers in a fraction of a second. Do not place your hand betwixt two strong magnets.

Fire warning

Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.

Keep away from children

Absolutely keep magnets out of reach of children. Ingestion danger is significant, and the effects of magnets connecting inside the body are life-threatening.

Thermal limits

Do not overheat. Neodymium magnets are susceptible to temperature. If you need operation above 80°C, look for HT versions (H, SH, UH).

Skin irritation risks

Studies show that nickel (the usual finish) is a potent allergen. If you have an allergy, refrain from touching magnets with bare hands or select encased magnets.

GPS and phone interference

Note: neodymium magnets produce a field that disrupts precision electronics. Maintain a separation from your mobile, device, and navigation systems.

Magnet fragility

Despite the nickel coating, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may crumble into hazardous fragments.

Warning for heart patients

Medical warning: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have electronic implants.

Caution required

Before use, check safety instructions. Sudden snapping can destroy the magnet or injure your hand. Be predictive.

Danger! Details about hazards in the article: Safety of working with magnets.