UMH 48x11x65 [M6] / N38 - magnetic holder with hook
magnetic holder with hook
Catalog no 310430
GTIN/EAN: 5906301814597
Diameter Ø
48 mm [±1 mm]
Height
65 mm [±1 mm]
Height
11 mm [±1 mm]
Weight
145 g
Magnetization Direction
↑ axial
Load capacity
88.00 kg / 862.99 N
Coating
[NiCuNi] Nickel
68.88 ZŁ with VAT / pcs + price for transport
56.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Lifting power along with shape of neodymium magnets can be analyzed on our
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Physical properties - UMH 48x11x65 [M6] / N38 - magnetic holder with hook
Specification / characteristics - UMH 48x11x65 [M6] / N38 - magnetic holder with hook
| properties | values |
|---|---|
| Cat. no. | 310430 |
| GTIN/EAN | 5906301814597 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 48 mm [±1 mm] |
| Height | 65 mm [±1 mm] |
| Height | 11 mm [±1 mm] |
| Weight | 145 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 88.00 kg / 862.99 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
Other proposals
Advantages and disadvantages of neodymium magnets.
Benefits
- They have constant strength, and over more than ten years their performance decreases symbolically – ~1% (in testing),
- Neodymium magnets are remarkably resistant to loss of magnetic properties caused by external magnetic fields,
- A magnet with a metallic gold surface looks better,
- Magnetic induction on the working layer of the magnet turns out to be exceptional,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to flexibility in shaping and the ability to customize to unusual requirements,
- Universal use in advanced technology sectors – they are used in computer drives, drive modules, diagnostic systems, as well as modern systems.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Weaknesses
- Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a steel housing, which not only protects them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength 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
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- We suggest cover - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
- Possible danger related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Furthermore, tiny parts of these products can complicate diagnosis medical after entering the body.
- Due to expensive raw materials, their price exceeds standard values,
Pull force analysis
Best holding force of the magnet in ideal parameters – what it depends on?
- on a block made of structural steel, effectively closing the magnetic field
- possessing a thickness of min. 10 mm to avoid saturation
- with an ideally smooth touching surface
- without any clearance between the magnet and steel
- under axial application of breakaway force (90-degree angle)
- at standard ambient temperature
Lifting capacity in practice – influencing factors
- Clearance – existence of foreign body (rust, tape, air) acts as an insulator, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Substrate 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 attracts identically. Alloy additives worsen the attraction effect.
- Surface condition – ground elements guarantee perfect abutment, which increases field saturation. Uneven metal weaken the grip.
- Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures gain strength (up to a certain limit).
Holding force was measured on the plate surface of 20 mm thickness, when the force acted perpendicularly, whereas under shearing force the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance between the magnet and the plate decreases the lifting capacity.
Precautions when working with neodymium magnets
Bone fractures
Large magnets can break fingers instantly. Under no circumstances place your hand between two strong magnets.
Implant safety
Warning for patients: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to work with the magnets.
Caution required
Handle magnets consciously. Their powerful strength can surprise even professionals. Plan your moves and do not underestimate their power.
Nickel allergy
It is widely known that nickel (standard magnet coating) is a common allergen. If you have an allergy, refrain from touching magnets with bare hands and select coated magnets.
Compass and GPS
GPS units and smartphones are extremely susceptible to magnetic fields. Direct contact with a strong magnet can permanently damage the sensors in your phone.
Swallowing risk
Strictly store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are fatal.
Operating temperature
Do not overheat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, inquire about special high-temperature series (H, SH, UH).
Machining danger
Dust produced during grinding of magnets is flammable. Do not drill into magnets without proper cooling and knowledge.
Magnet fragility
Neodymium magnets are ceramic materials, meaning they are fragile like glass. Clashing of two magnets will cause them breaking into shards.
Protect data
Equipment safety: Strong magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, timepieces).
