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UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread
magnetic holder external thread
Catalog no 190415
GTIN/EAN: 5906301813866
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
59.90 ZŁ with VAT / pcs + price for transport
48.70 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread
Specification / characteristics - UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 190415 |
| GTIN/EAN | 5906301813866 |
| 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 |
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Advantages as well as disadvantages of Nd2Fe14B magnets.
Pros
- They do not lose strength, even over nearly 10 years – the reduction in lifting capacity is only ~1% (based on measurements),
- Neodymium magnets are distinguished by exceptionally resistant to magnetic field loss caused by external magnetic fields,
- By covering with a shiny coating of silver, the element presents an aesthetic look,
- Neodymium magnets achieve maximum magnetic induction on a contact point, which increases force concentration,
- Neodymium magnets are characterized by extremely high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
- Considering the option of free forming and adaptation to custom requirements, neodymium magnets can be manufactured in a broad palette of geometric configurations, which expands the range of possible applications,
- Huge importance in electronics industry – they serve a role in magnetic memories, brushless drives, medical equipment, and technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in tiny dimensions, which enables their usage in compact constructions
Limitations
- To avoid cracks under impact, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength 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 when using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
- Limited ability of making threads in the magnet and complex forms - preferred is casing - magnetic holder.
- Health risk resulting from small fragments of magnets pose a threat, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Additionally, small elements of these magnets can disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Detachment force of the magnet in optimal conditions – what contributes to it?
- using a sheet made of low-carbon steel, serving as a circuit closing element
- possessing a massiveness of minimum 10 mm to avoid saturation
- with a plane perfectly flat
- with direct contact (no paint)
- during pulling in a direction vertical to the plane
- at standard ambient temperature
Impact of factors on magnetic holding capacity in practice
- Space between magnet and steel – even a fraction of a millimeter of distance (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits much less (typically approx. 20-30% of maximum force).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Steel grade – ideal substrate is high-permeability steel. Cast iron may attract less.
- Base smoothness – the smoother and more polished the plate, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
- Heat – neodymium magnets have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, in contrast under parallel forces the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate lowers the load capacity.
Safety rules for work with NdFeB magnets
Life threat
Medical warning: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.
Do not give to children
These products are not intended for children. Swallowing multiple magnets may result in them attracting across intestines, which constitutes a direct threat to life and necessitates urgent medical intervention.
GPS Danger
Remember: neodymium magnets produce a field that confuses precision electronics. Maintain a safe distance from your mobile, tablet, and navigation systems.
Permanent damage
Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.
Hand protection
Protect your hands. Two powerful magnets will snap together instantly with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Do not drill into magnets
Dust generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.
Magnetic media
Very strong magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Stay away of at least 10 cm.
Allergic reactions
Studies show that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, prevent touching magnets with bare hands or select encased magnets.
Protective goggles
Watch out for shards. Magnets can fracture upon uncontrolled impact, launching sharp fragments into the air. We recommend safety glasses.
Immense force
Before starting, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
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
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