![Magnet for screw UMGW 48x24x11.5 [M8] GW / N38](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnet for screw UMGW 48x24x11.5 [M8] GW / N38")
![UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/umgw-48x24x11.5-m8-gw-val.jpg)
UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180418
GTIN/EAN: 5906301813774
Diameter Ø
48 mm [±1 mm]
Height
24 mm [±1 mm]
Height
11.5 mm [±1 mm]
Weight
140 g
Load capacity
80.00 kg / 784.53 N
59.96 ZŁ with VAT / pcs + price for transport
48.75 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us now
+48 22 499 98 98
alternatively contact us via
request form
the contact page.
Force and appearance of a neodymium magnet can be estimated with our
power calculator.
Same-day processing for orders placed before 14:00.
Product card - UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180418 |
| GTIN/EAN | 5906301813774 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 48 mm [±1 mm] |
| Height | 24 mm [±1 mm] |
| Height | 11.5 mm [±1 mm] |
| Weight | 140 g |
| Load capacity ~ ? | 80.00 kg / 784.53 N |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N38
| 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
| 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 |
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 |
Other proposals
![UI 45x13x6 [C321] / N38 - badge holder](https://cdn3.dhit.pl/graphics/products/ui45x13x6-c321-jic.jpg "UI 45x13x6 [C321] / N38 - badge holder")
Pros and cons of Nd2Fe14B magnets.
Strengths
- They do not lose strength, even after nearly 10 years – the decrease in lifting capacity is only ~1% (based on measurements),
- Magnets effectively protect themselves against loss of magnetization caused by foreign field sources,
- In other words, due to the aesthetic surface of silver, the element looks attractive,
- Neodymium magnets achieve maximum magnetic induction on a contact point, which ensures high operational effectiveness,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Possibility of accurate shaping and optimizing to precise applications,
- Huge importance in electronics industry – they are used in mass storage devices, electric drive systems, precision medical tools, and complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Weaknesses
- At very strong impacts they can crack, therefore we advise placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets experience a drop in power. Often, when the temperature exceeds 80°C, their power 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
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- We suggest cover - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated forms.
- Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these products are able to be problematic in diagnostics medical when they are in the body.
- Due to expensive raw materials, their price exceeds standard values,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what it depends on?
- with the use of a sheet made of special test steel, ensuring maximum field concentration
- possessing a thickness of min. 10 mm to avoid saturation
- with a surface cleaned and smooth
- without the slightest air gap between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- in neutral thermal conditions
Lifting capacity in practice – influencing factors
- Distance (betwixt the magnet and the plate), since even a very small distance (e.g. 0.5 mm) results in a decrease in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops significantly, often to levels of 20-30% of the maximum value.
- Base massiveness – insufficiently thick sheet does not accept the full field, causing part of the flux to be wasted to the other side.
- Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
- Surface finish – full contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Temperature influence – high temperature weakens magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity was assessed with the use of a polished steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the lifting capacity is smaller. Additionally, even a slight gap between the magnet’s surface and the plate decreases the holding force.
H&S for magnets
Machining danger
Mechanical processing of neodymium magnets carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Material brittleness
Neodymium magnets are ceramic materials, which means they are very brittle. Clashing of two magnets leads to them cracking into shards.
This is not a toy
NdFeB magnets are not suitable for play. Swallowing multiple magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.
Cards and drives
Avoid bringing magnets close to a purse, computer, or screen. The magnetism can irreversibly ruin these devices and erase data from cards.
Warning for heart patients
People with a ICD have to keep an absolute distance from magnets. The magnetism can stop the functioning of the implant.
Caution required
Handle magnets with awareness. Their immense force can shock even professionals. Stay alert and do not underestimate their power.
Warning for allergy sufferers
Allergy Notice: The nickel-copper-nickel coating consists of nickel. If an allergic reaction appears, cease handling magnets and use protective gear.
Impact on smartphones
GPS units and smartphones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
Bone fractures
Big blocks can smash fingers instantly. Do not place your hand betwixt two attracting surfaces.
Heat warning
Keep cool. NdFeB magnets are sensitive to temperature. If you need operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
Rate the product
Your rating