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HH 32x7.8 [M5] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370483
GTIN/EAN: 5906301814931
Diameter Ø
32 mm [±1 mm]
Height
7.8 mm [±1 mm]
Weight
37.8 g
Magnetization Direction
↑ axial
Load capacity
27.00 kg / 264.78 N
Coating
[NiCuNi] Nickel
17.96 ZŁ with VAT / pcs + price for transport
14.60 ZŁ net + 23% VAT / pcs
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Detailed specification - HH 32x7.8 [M5] / N38 - through hole magnetic holder
Specification / characteristics - HH 32x7.8 [M5] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370483 |
| GTIN/EAN | 5906301814931 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 32 mm [±1 mm] |
| Height | 7.8 mm [±1 mm] |
| Weight | 37.8 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 27.00 kg / 264.78 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 |
Material specification
| 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other products
Pros and cons of Nd2Fe14B magnets.
Advantages
- They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
- They do not lose their magnetic properties even under strong external field,
- A magnet with a metallic silver surface is more attractive,
- The surface of neodymium magnets generates a intense magnetic field – this is one of their assets,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
- Possibility of exact forming and adjusting to defined requirements,
- Key role in modern industrial fields – they serve a role in magnetic memories, brushless drives, precision medical tools, and industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which allows their use in compact constructions
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only secures them against impacts but also raises their durability
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
- We suggest a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complex forms.
- Health risk resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. It is also worth noting that tiny parts of these magnets are able to be problematic in diagnostics medical after entering the body.
- With large orders the cost of neodymium magnets is a challenge,
Pull force analysis
Breakaway strength of the magnet in ideal conditions – what contributes to it?
- using a base made of high-permeability steel, functioning as a circuit closing element
- possessing a massiveness of minimum 10 mm to avoid saturation
- characterized by even structure
- under conditions of ideal adhesion (metal-to-metal)
- for force applied at a right angle (pull-off, not shear)
- at conditions approx. 20°C
Key elements affecting lifting force
- Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the maximum value.
- Plate thickness – insufficiently thick plate does not close the flux, causing part of the power to be wasted to the other side.
- Material type – ideal substrate is pure iron steel. Stainless steels may attract less.
- Base smoothness – the more even the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
- Temperature influence – hot environment reduces magnetic field. Exceeding the limit temperature can permanently demagnetize the magnet.
Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces the holding force is lower. Moreover, even a slight gap between the magnet and the plate lowers the load capacity.
Precautions when working with NdFeB magnets
Risk of cracking
Despite metallic appearance, neodymium is brittle and not impact-resistant. Avoid impacts, as the magnet may crumble into hazardous fragments.
Heat warning
Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.
Safe operation
Exercise caution. Neodymium magnets act from a distance and connect with huge force, often faster than you can react.
Electronic devices
Very strong magnetic fields can erase data on payment cards, HDDs, and other magnetic media. Stay away of min. 10 cm.
Adults only
Adult use only. Small elements pose a choking risk, causing serious injuries. Keep out of reach of children and animals.
Health Danger
Patients with a heart stimulator must keep an absolute distance from magnets. The magnetism can disrupt the operation of the life-saving device.
Dust explosion hazard
Machining of neodymium magnets poses a fire risk. Magnetic powder oxidizes rapidly with oxygen and is difficult to extinguish.
Precision electronics
An intense magnetic field disrupts the functioning of magnetometers in smartphones and navigation systems. Do not bring magnets close to a device to prevent damaging the sensors.
Nickel allergy
Some people have a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Prolonged contact may cause an allergic reaction. We strongly advise wear protective gloves.
Crushing risk
Mind your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!
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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