UMC 75x11/6x18 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320414
GTIN/EAN: 5906301814702
Diameter
75 mm [±1 mm]
internal diameter Ø
11/6 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
465 g
Load capacity
155.00 kg / 1520.03 N
Coating
[NiCuNi] Nickel
169.86 ZŁ with VAT / pcs + price for transport
138.10 ZŁ net + 23% VAT / pcs
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Technical parameters of the product - UMC 75x11/6x18 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 75x11/6x18 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320414 |
| GTIN/EAN | 5906301814702 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 75 mm [±1 mm] |
| internal diameter Ø | 11/6 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Weight | 465 g |
| Load capacity ~ ? | 155.00 kg / 1520.03 N |
| Coating | [NiCuNi] Nickel |
| 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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![UMH 20x7x35 [M4] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-20x7x35-m4-hiz.jpg "UMH 20x7x35 [M4] / N38 - magnetic holder with hook")
Advantages and disadvantages of Nd2Fe14B magnets.
Benefits
- They virtually do not lose strength, because even after 10 years the performance loss is only ~1% (based on calculations),
- They have excellent resistance to magnetic field loss when exposed to external magnetic sources,
- The use of an elegant layer of noble metals (nickel, gold, silver) causes the element to look better,
- Magnets possess huge magnetic induction on the surface,
- Thanks to resistance to high temperature, they are able to function (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to flexibility in designing and the capacity to customize to client solutions,
- Fundamental importance in electronics industry – they are used in data components, motor assemblies, medical equipment, and technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Disadvantages
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We advise keeping them in a special holder, which not only protects them against impacts but also raises their durability
- We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 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 stable to moisture, when using outdoors
- We suggest cover - magnetic holder, due to difficulties in producing threads inside the magnet and complex forms.
- Possible danger resulting from small fragments of magnets pose a threat, if swallowed, which becomes key in the context of child health protection. Furthermore, small elements of these products can complicate diagnosis medical when they are in the body.
- Due to expensive raw materials, their price is higher than average,
Holding force characteristics
Detachment force of the magnet in optimal conditions – what affects it?
- on a base made of mild steel, effectively closing the magnetic flux
- with a cross-section minimum 10 mm
- with an ground contact surface
- without the slightest air gap between the magnet and steel
- under axial application of breakaway force (90-degree angle)
- in neutral thermal conditions
Practical aspects of lifting capacity – factors
- Clearance – existence of any layer (rust, tape, air) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Pull-off angle – remember that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
- Heat – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and in frost gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 75%. In addition, even a minimal clearance between the magnet and the plate decreases the lifting capacity.
Precautions when working with neodymium magnets
Do not give to children
Neodymium magnets are not toys. Eating multiple magnets may result in them connecting inside the digestive tract, which constitutes a direct threat to life and requires immediate surgery.
Combustion hazard
Powder generated during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Beware of splinters
Beware of splinters. Magnets can explode upon uncontrolled impact, ejecting shards into the air. Wear goggles.
Physical harm
Large magnets can crush fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Demagnetization risk
Standard neodymium magnets (N-type) lose power when the temperature surpasses 80°C. The loss of strength is permanent.
Magnetic interference
A strong magnetic field interferes with the operation of compasses in phones and GPS navigation. Keep magnets close to a smartphone to prevent damaging the sensors.
Nickel coating and allergies
A percentage of the population have a hypersensitivity to Ni, which is the standard coating for neodymium magnets. Extended handling can result in an allergic reaction. We suggest wear safety gloves.
Handling guide
Before use, check safety instructions. Sudden snapping can break the magnet or hurt your hand. Think ahead.
ICD Warning
Medical warning: Strong magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.
Electronic devices
Intense magnetic fields can destroy records on credit cards, HDDs, and storage devices. Stay away of min. 10 cm.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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Płatność przy odbiorze (pobranie):
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23.00 ZŁ
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