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HH 42x8.8 [M6] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370484
GTIN/EAN: 5906301814948
Diameter Ø
42 mm [±1 mm]
Height
8.8 mm [±1 mm]
Weight
75.2 g
Magnetization Direction
↑ axial
Load capacity
55.00 kg / 539.37 N
Coating
[NiCuNi] Nickel
29.89 ZŁ with VAT / pcs + price for transport
24.30 ZŁ net + 23% VAT / pcs
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Technical - HH 42x8.8 [M6] / N38 - through hole magnetic holder
Specification / characteristics - HH 42x8.8 [M6] / N38 - through hole magnetic holder
| properties | values |
|---|---|
| Cat. no. | 370484 |
| GTIN/EAN | 5906301814948 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 42 mm [±1 mm] |
| Height | 8.8 mm [±1 mm] |
| Weight | 75.2 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 55.00 kg / 539.37 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 |
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% |
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 and disadvantages of neodymium magnets.
Advantages
- Their magnetic field is maintained, and after approximately 10 years it drops only by ~1% (theoretically),
- Magnets perfectly defend themselves against demagnetization caused by external fields,
- Thanks to the glossy finish, the surface of Ni-Cu-Ni, gold-plated, or silver-plated gives an aesthetic appearance,
- Neodymium magnets deliver maximum magnetic induction on a small surface, which allows for strong attraction,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
- Possibility of accurate forming as well as optimizing to specific needs,
- Significant place in innovative solutions – they find application in hard drives, electric drive systems, precision medical tools, also modern systems.
- Thanks to efficiency per cm³, small magnets offer high operating force, with minimal size,
Disadvantages
- At very strong impacts they can break, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets lose force when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening 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 oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Limited possibility of producing threads in the magnet and complicated forms - recommended is casing - magnet mounting.
- Health risk related to microscopic parts of magnets pose a threat, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, small components of these products are able to be problematic in diagnostics medical after entering the body.
- With mass production the cost of neodymium magnets is economically unviable,
Holding force characteristics
Maximum lifting force for a neodymium magnet – what affects it?
- using a sheet made of low-carbon steel, functioning as a circuit closing element
- possessing a thickness of min. 10 mm to avoid saturation
- with a plane perfectly flat
- with total lack of distance (no coatings)
- under axial force vector (90-degree angle)
- at ambient temperature room level
Determinants of practical lifting force of a magnet
- Gap between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or unevenness) drastically reduces the magnet efficiency, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet holds significantly lower power (often approx. 20-30% of nominal force).
- Substrate thickness – for full efficiency, the steel must be adequately massive. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Steel grade – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Surface finish – full contact is possible only on smooth steel. Rough texture create air cushions, weakening the magnet.
- Thermal environment – temperature increase results in weakening of force. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was carried out on plates with a smooth surface of optimal thickness, under perpendicular forces, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet and the plate lowers the lifting capacity.
Safe handling of neodymium magnets
Warning for allergy sufferers
Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, immediately stop working with magnets and use protective gear.
Heat sensitivity
Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.
Finger safety
Risk of injury: The pulling power is so great that it can result in hematomas, pinching, and broken bones. Protective gloves are recommended.
Protective goggles
Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into hazardous fragments.
Fire warning
Powder created during machining of magnets is combustible. Avoid drilling into magnets without proper cooling and knowledge.
Data carriers
Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (heart implants, medical aids, timepieces).
Health Danger
Individuals with a pacemaker should keep an absolute distance from magnets. The magnetic field can disrupt the functioning of the implant.
Do not give to children
Strictly keep magnets out of reach of children. Risk of swallowing is high, and the effects of magnets connecting inside the body are life-threatening.
Handling rules
Before starting, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.
Phone sensors
Navigation devices and mobile phones are extremely susceptible to magnetic fields. Direct contact with a powerful NdFeB magnet can permanently damage the internal compass in your phone.
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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