UMS 75x19x10.5x18 / N38 - conical magnetic holder
conical magnetic holder
Catalog no 220405
GTIN/EAN: 5906301814245
Diameter Ø
75 mm [±1 mm]
cone dimension Ø
19x10.5 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
465 g
Magnetization Direction
↑ axial
Load capacity
162.00 kg / 1588.68 N
Coating
[NiCuNi] Nickel
125.56 ZŁ with VAT / pcs + price for transport
102.08 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force and appearance of a neodymium magnet can be estimated on our
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Technical parameters of the product - UMS 75x19x10.5x18 / N38 - conical magnetic holder
Specification / characteristics - UMS 75x19x10.5x18 / N38 - conical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 220405 |
| GTIN/EAN | 5906301814245 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| cone dimension Ø | 19x10.5 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Weight | 465 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 162.00 kg / 1588.68 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% |
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 rare earth magnets.
Strengths
- They virtually do not lose power, because even after 10 years the decline in efficiency is only ~1% (in laboratory conditions),
- Magnets perfectly defend themselves against demagnetization caused by foreign field sources,
- In other words, due to the glossy surface of gold, the element is aesthetically pleasing,
- Neodymium magnets ensure maximum magnetic induction on a small surface, 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 freedom in shaping and the capacity to customize to client solutions,
- Fundamental importance in high-tech industry – they are used in HDD drives, electric drive systems, medical devices, as well as modern systems.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Limitations
- To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we advise using waterproof magnets made of rubber, plastic or other material stable to moisture, when using outdoors
- Limited ability of producing threads in the magnet and complex forms - preferred is cover - magnetic holder.
- Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that tiny parts of these products can be problematic in diagnostics medical in case of swallowing.
- Due to expensive raw materials, their price exceeds standard values,
Lifting parameters
Highest magnetic holding force – what contributes to it?
- on a block made of mild steel, optimally conducting the magnetic field
- whose thickness equals approx. 10 mm
- with a surface cleaned and smooth
- with zero gap (without paint)
- for force acting at a right angle (pull-off, not shear)
- at temperature room level
Determinants of practical lifting force of a magnet
- Gap (betwixt the magnet and the metal), because even a tiny distance (e.g. 0.5 mm) leads to a decrease in force by up to 50% (this also applies to paint, corrosion or debris).
- Loading method – declared lifting capacity refers to detachment vertically. When attempting to slide, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Metal thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of generating force.
- Material composition – different alloys reacts the same. High carbon content worsen the attraction effect.
- Surface finish – full contact is possible only on polished steel. Rough texture create air cushions, reducing force.
- Temperature – temperature increase results in weakening of induction. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet and the plate lowers the load capacity.
Safety rules for work with neodymium magnets
Allergy Warning
Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation happens, immediately stop working with magnets and wear gloves.
Protect data
Do not bring magnets near a wallet, laptop, or screen. The magnetic field can irreversibly ruin these devices and erase data from cards.
Phone sensors
A powerful magnetic field interferes with the operation of magnetometers in smartphones and GPS navigation. Keep magnets near a device to avoid breaking the sensors.
Dust explosion hazard
Powder created during machining of magnets is combustible. Do not drill into magnets unless you are an expert.
Implant safety
Patients with a ICD have to maintain an large gap from magnets. The magnetic field can interfere with the operation of the implant.
Finger safety
Watch your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!
Permanent damage
Control the heat. Exposing the magnet above 80 degrees Celsius will ruin its properties and strength.
Caution required
Be careful. Rare earth magnets act from a long distance and snap with massive power, often faster than you can move away.
This is not a toy
Only for adults. Small elements can be swallowed, leading to serious injuries. Store out of reach of kids and pets.
Protective goggles
Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
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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