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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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Parameters as well as form of neodymium magnets can be analyzed using our
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Physical properties - 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 |
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 |
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Advantages and disadvantages of neodymium magnets.
Pros
- Their power is durable, and after around 10 years it decreases only by ~1% (according to research),
- They have excellent resistance to magnetic field loss when exposed to external fields,
- The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to present itself better,
- Neodymium magnets ensure maximum magnetic induction on a their surface, which increases force concentration,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
- Considering the option of free molding and customization to individualized needs, magnetic components can be manufactured in a wide range of geometric configurations, which expands the range of possible applications,
- Versatile presence in innovative solutions – they are commonly used in data components, motor assemblies, precision medical tools, and modern systems.
- Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which makes them useful in compact constructions
Weaknesses
- At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Limited possibility of creating threads in the magnet and complicated forms - recommended is a housing - mounting mechanism.
- Potential hazard related to microscopic parts of magnets are risky, in case of ingestion, which becomes key in the context of child health protection. It is also worth noting that small components of these products are able to be problematic in diagnostics 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
Optimal lifting capacity of a neodymium magnet – what it depends on?
- on a plate made of structural steel, perfectly concentrating the magnetic flux
- possessing a massiveness of at least 10 mm to avoid saturation
- with an polished contact surface
- under conditions of ideal adhesion (metal-to-metal)
- during detachment in a direction perpendicular to the plane
- at ambient temperature room level
Determinants of practical lifting force of a magnet
- Distance – existence of any layer (rust, tape, gap) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the maximum value.
- Substrate thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the attraction force (the magnet "punches through" it).
- Metal type – not every steel attracts identically. Alloy additives worsen the attraction effect.
- Base smoothness – the more even the plate, the larger the contact zone and stronger the hold. Unevenness creates an air distance.
- Thermal factor – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Lifting capacity was determined using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under shearing force the load capacity is reduced by as much as 5 times. Moreover, even a minimal clearance between the magnet’s surface and the plate decreases the lifting capacity.
Warnings
Mechanical processing
Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this risks ignition.
Avoid contact if allergic
A percentage of the population suffer from a contact allergy to nickel, which is the common plating for neodymium magnets. Frequent touching might lead to an allergic reaction. We recommend wear safety gloves.
Health Danger
People with a pacemaker should maintain an absolute distance from magnets. The magnetism can interfere with the functioning of the implant.
Magnetic media
Powerful magnetic fields can corrupt files on payment cards, HDDs, and storage devices. Keep a distance of at least 10 cm.
Danger to the youngest
These products are not intended for children. Swallowing several magnets can lead to them pinching intestinal walls, which poses a critical condition and requires immediate surgery.
Do not overheat magnets
Avoid heat. Neodymium magnets are sensitive to temperature. If you need operation above 80°C, look for HT versions (H, SH, UH).
Shattering risk
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them shattering into shards.
Respect the power
Handle with care. Rare earth magnets attract from a distance and connect with massive power, often quicker than you can move away.
Crushing risk
Big blocks can crush fingers instantly. Under no circumstances place your hand between two strong magnets.
Keep away from electronics
A powerful magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Maintain magnets near a smartphone to avoid damaging the sensors.
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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