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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
bulk discounts:
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Technical of the product - 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 |
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Advantages as well as disadvantages of neodymium magnets.
Benefits
- Their strength remains stable, and after approximately 10 years it decreases only by ~1% (theoretically),
- They possess excellent resistance to magnetism drop due to external fields,
- Thanks to the reflective finish, the surface of nickel, gold-plated, or silver gives an visually attractive appearance,
- Magnets have extremely high magnetic induction on the outer side,
- 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...
- Possibility of exact forming and adjusting to atypical needs,
- Huge importance in advanced technology sectors – they are commonly used in HDD drives, brushless drives, medical devices, as well as industrial machines.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in small systems
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can fracture. We recommend keeping them in a strong case, which not only secures them against impacts but also raises their durability
- Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of strength (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
- They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited ability of creating threads in the magnet and complex forms - recommended is casing - magnet mounting.
- Potential hazard to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Additionally, small components of these magnets are able to complicate diagnosis medical after entering the body.
- With large orders the cost of neodymium magnets can be a barrier,
Lifting parameters
Detachment force of the magnet in optimal conditions – what affects it?
- using a sheet made of high-permeability steel, functioning as a circuit closing element
- with a thickness minimum 10 mm
- characterized by even structure
- under conditions of no distance (surface-to-surface)
- during pulling in a direction perpendicular to the mounting surface
- at room temperature
Determinants of practical lifting force of a magnet
- Gap (betwixt the magnet and the metal), as even a tiny clearance (e.g. 0.5 mm) results in a reduction in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Element thickness – for full efficiency, the steel must be sufficiently thick. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
- Surface finish – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity testing was conducted on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate reduces the holding force.
H&S for magnets
This is not a toy
Only for adults. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of kids and pets.
Dust is flammable
Drilling and cutting of NdFeB material carries a risk of fire hazard. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Protect data
Device Safety: Strong magnets can damage payment cards and delicate electronics (heart implants, medical aids, mechanical watches).
Medical implants
Individuals with a pacemaker have to maintain an large gap from magnets. The magnetic field can stop the operation of the implant.
Avoid contact if allergic
Medical facts indicate that the nickel plating (the usual finish) is a strong allergen. If your skin reacts to metals, prevent direct skin contact or select versions in plastic housing.
Beware of splinters
Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Wear goggles.
Operating temperature
Control the heat. Exposing the magnet to high heat will ruin its properties and strength.
Respect the power
Before starting, check safety instructions. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
Finger safety
Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, destroying anything in their path. Be careful!
Threat to navigation
Be aware: rare earth magnets generate a field that interferes with precision electronics. Keep a separation from your mobile, device, and GPS.
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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