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HH 36x7.5 [M6] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370479
GTIN/EAN: 5906301814894
Diameter Ø
36 mm [±1 mm]
Height
7.5 mm [±1 mm]
Weight
36 g
Magnetization Direction
↑ axial
Load capacity
26.00 kg / 254.97 N
Coating
[NiCuNi] Nickel
38.90 ZŁ with VAT / pcs + price for transport
31.63 ZŁ net + 23% VAT / pcs
bulk discounts:
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Detailed specification - HH 36x7.5 [M6] / N38 - through hole magnetic holder
Specification / characteristics - HH 36x7.5 [M6] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370479 |
| GTIN/EAN | 5906301814894 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 36 mm [±1 mm] |
| Height | 7.5 mm [±1 mm] |
| Weight | 36 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 26.00 kg / 254.97 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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Pros as well as cons of Nd2Fe14B magnets.
Benefits
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (according to literature),
- Magnets perfectly protect themselves against loss of magnetization caused by external fields,
- By applying a smooth layer of silver, the element presents an nice look,
- Neodymium magnets ensure maximum magnetic induction on a small area, which increases force concentration,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the form) even at high temperatures reaching 230°C or more...
- Thanks to modularity in shaping and the ability to customize to complex applications,
- Significant place in electronics industry – they are used in computer drives, electric drive systems, diagnostic systems, also other advanced devices.
- Compactness – despite small sizes they generate large force, making them ideal for precision applications
Limitations
- At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage and increases the magnet's durability.
- When exposed to high temperature, neodymium magnets suffer 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
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Due to limitations in producing threads and complicated forms in magnets, we recommend using casing - magnetic mechanism.
- Health risk to health – tiny shards of magnets can be dangerous, in case of ingestion, which is particularly important in the context of child safety. Additionally, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Magnetic strength at its maximum – what contributes to it?
- with the application of a yoke made of special test steel, guaranteeing full magnetic saturation
- with a cross-section of at least 10 mm
- with a plane cleaned and smooth
- with zero gap (no paint)
- under axial application of breakaway force (90-degree angle)
- at conditions approx. 20°C
Lifting capacity in practice – influencing factors
- Gap between surfaces – even a fraction of a millimeter of separation (caused e.g. by veneer or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Load vector – highest force is reached only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly several times smaller (approx. 1/5 of the lifting capacity).
- Steel thickness – insufficiently thick steel does not accept the full field, causing part of the power to be wasted into the air.
- Steel grade – ideal substrate is high-permeability steel. Hardened steels may attract less.
- Surface finish – ideal contact is possible only on smooth steel. Rough texture reduce the real contact area, weakening the magnet.
- Heat – NdFeB sinters have a negative temperature coefficient. At higher temperatures they lose power, and in frost they can be stronger (up to a certain limit).
Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the holding force is lower. Moreover, even a small distance between the magnet’s surface and the plate lowers the holding force.
Precautions when working with NdFeB magnets
Heat warning
Regular neodymium magnets (grade N) undergo demagnetization when the temperature exceeds 80°C. This process is irreversible.
Dust is flammable
Fire hazard: Rare earth powder is explosive. Avoid machining magnets without safety gear as this may cause fire.
Medical implants
For implant holders: Powerful magnets affect electronics. Maintain at least 30 cm distance or request help to work with the magnets.
GPS and phone interference
Note: rare earth magnets generate a field that disrupts precision electronics. Keep a safe distance from your phone, tablet, and GPS.
Powerful field
Before use, check safety instructions. Uncontrolled attraction can break the magnet or injure your hand. Think ahead.
Allergic reactions
Certain individuals suffer from a hypersensitivity to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to an allergic reaction. It is best to use protective gloves.
Do not give to children
NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets can lead to them pinching intestinal walls, which constitutes a direct threat to life and necessitates urgent medical intervention.
Fragile material
Neodymium magnets are sintered ceramics, which means they are fragile like glass. Clashing of two magnets leads to them cracking into shards.
Crushing risk
Protect your hands. Two large magnets will snap together instantly with a force of several hundred kilograms, crushing anything in their path. Be careful!
Electronic hazard
Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can irreversibly ruin these devices and wipe information from cards.
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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