UMT 29x38 white / N38 - board holder
board holder
Catalog no 230283
GTIN/EAN: 5906301814351
Diameter Ø
29 mm [±1 mm]
Height
38 mm [±1 mm]
Weight
6 g
Coating
[NiCuNi] Nickel
6.81 ZŁ with VAT / pcs + price for transport
5.54 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical - UMT 29x38 white / N38 - board holder
Specification / characteristics - UMT 29x38 white / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230283 |
| GTIN/EAN | 5906301814351 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 29 mm [±1 mm] |
| Height | 38 mm [±1 mm] |
| Weight | 6 g |
| 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 |
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 |
Other proposals
![UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/umgw-75x33x18-m10-gw-cak.jpg "UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread")
Strengths and weaknesses of Nd2Fe14B magnets.
Strengths
- They do not lose power, even over around 10 years – the drop in lifting capacity is only ~1% (theoretically),
- They have excellent resistance to magnetism drop when exposed to external magnetic sources,
- By covering with a lustrous layer of silver, the element presents an modern look,
- Magnets possess very high magnetic induction on the outer layer,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Due to the potential of flexible shaping and adaptation to custom solutions, NdFeB magnets can be produced in a wide range of forms and dimensions, which increases their versatility,
- Universal use in modern technologies – they find application in HDD drives, electric drive systems, medical equipment, as well as modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in tiny dimensions, which allows their use in miniature devices
Weaknesses
- At very strong impacts they can crack, therefore we advise placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we suggest using waterproof magnets made of rubber, plastic or other material resistant to moisture
- We suggest cover - magnetic holder, due to difficulties in producing threads inside the magnet and complicated shapes.
- Potential hazard related to microscopic parts of magnets pose a threat, in case of ingestion, which becomes key in the aspect of protecting the youngest. Additionally, small components of these products are able to be problematic in diagnostics medical after entering the body.
- With large orders the cost of neodymium magnets can be a barrier,
Pull force analysis
Optimal lifting capacity of a neodymium magnet – what contributes to it?
- using a sheet made of mild steel, acting as a ideal flux conductor
- possessing a massiveness of at least 10 mm to avoid saturation
- characterized by even structure
- without the slightest clearance between the magnet and steel
- for force applied at a right angle (in the magnet axis)
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Clearance – the presence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces power rapidly (even by 50% at 0.5 mm).
- Angle of force application – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the surface is usually several times lower (approx. 1/5 of the lifting capacity).
- Steel thickness – too thin sheet does not close the flux, causing part of the power to be escaped into the air.
- Steel grade – the best choice is pure iron steel. Cast iron may attract less.
- Surface quality – the more even the plate, the better the adhesion and higher the lifting capacity. Unevenness acts like micro-gaps.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. At higher temperatures they are weaker, and in frost they can be stronger (up to a certain limit).
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate decreases the load capacity.
H&S for magnets
Bodily injuries
Big blocks can break fingers instantly. Do not put your hand betwixt two strong magnets.
Heat warning
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
Health Danger
Patients with a heart stimulator should keep an safe separation from magnets. The magnetism can disrupt the functioning of the implant.
Do not underestimate power
Handle with care. Neodymium magnets act from a long distance and snap with massive power, often quicker than you can react.
Magnet fragility
Watch out for shards. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.
Safe distance
Avoid bringing magnets near a wallet, computer, or TV. The magnetism can irreversibly ruin these devices and erase data from cards.
Do not give to children
Product intended for adults. Tiny parts pose a choking risk, causing serious injuries. Keep out of reach of kids and pets.
Fire warning
Machining of neodymium magnets poses a fire hazard. Neodymium dust reacts violently with oxygen and is difficult to extinguish.
GPS Danger
An intense magnetic field disrupts the functioning of compasses in smartphones and navigation systems. Keep magnets close to a device to prevent breaking the sensors.
Avoid contact if allergic
Studies show that the nickel plating (the usual finish) is a potent allergen. If you have an allergy, prevent direct skin contact and opt for encased magnets.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
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14.99 ZŁ
InPost Paczkomaty 24/7
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Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
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