UMH 60x15x69 [M8] / N38 - magnetic holder with hook
magnetic holder with hook
Catalog no 310431
GTIN/EAN: 5906301814603
Diameter Ø
60 mm [±1 mm]
Height
69 mm [±1 mm]
Height
15 mm [±1 mm]
Weight
300 g
Magnetization Direction
↑ axial
Load capacity
112.00 kg / 1098.34 N
Coating
[NiCuNi] Nickel
143.91 ZŁ with VAT / pcs + price for transport
117.00 ZŁ net + 23% VAT / pcs
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Technical of the product - UMH 60x15x69 [M8] / N38 - magnetic holder with hook
Specification / characteristics - UMH 60x15x69 [M8] / N38 - magnetic holder with hook
| properties | values |
|---|---|
| Cat. no. | 310431 |
| GTIN/EAN | 5906301814603 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 60 mm [±1 mm] |
| Height | 69 mm [±1 mm] |
| Height | 15 mm [±1 mm] |
| Weight | 300 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 112.00 kg / 1098.34 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 |
Other products
Pros and cons of neodymium magnets.
Pros
- They retain magnetic properties for almost ten years – the loss is just ~1% (according to analyses),
- Neodymium magnets are distinguished by extremely resistant to demagnetization caused by external magnetic fields,
- By using a reflective layer of gold, the element gains an nice look,
- Neodymium magnets achieve maximum magnetic induction on a their surface, which allows for strong attraction,
- Thanks to resistance to high temperature, they are capable of working (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to flexibility in shaping and the capacity to adapt to complex applications,
- Huge importance in innovative solutions – they are used in mass storage devices, electric motors, advanced medical instruments, and other advanced devices.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Limitations
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a strong case, which not only protects them against impacts but also increases their durability
- NdFeB 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
- Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- Due to limitations in creating threads and complicated forms in magnets, we recommend using cover - magnetic holder.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that tiny parts of these products are able to complicate diagnosis medical after entering the body.
- With large orders the cost of neodymium magnets is a challenge,
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- using a base made of high-permeability steel, acting as a ideal flux conductor
- whose thickness reaches at least 10 mm
- with an ideally smooth contact surface
- under conditions of gap-free contact (metal-to-metal)
- during detachment in a direction vertical to the plane
- at ambient temperature approx. 20 degrees Celsius
Practical aspects of lifting capacity – factors
- Gap (between the magnet and the plate), as even a microscopic clearance (e.g. 0.5 mm) leads to a decrease in lifting capacity by up to 50% (this also applies to paint, rust or dirt).
- Pull-off angle – note that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops significantly, often to levels of 20-30% of the nominal value.
- Plate thickness – insufficiently thick plate does not close the flux, causing part of the power to be lost to the other side.
- Material type – the best choice is pure iron steel. Hardened steels may attract less.
- Surface finish – full contact is obtained only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Thermal factor – high temperature weakens pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under vertically applied force, however under shearing force the holding force is lower. In addition, even a small distance between the magnet and the plate decreases the lifting capacity.
Safety rules for work with neodymium magnets
Keep away from computers
Very strong magnetic fields can erase data on credit cards, hard drives, and storage devices. Keep a distance of at least 10 cm.
GPS and phone interference
A powerful magnetic field negatively affects the functioning of magnetometers in smartphones and GPS navigation. Maintain magnets close to a device to prevent damaging the sensors.
Warning for heart patients
Patients with a pacemaker have to keep an large gap from magnets. The magnetic field can disrupt the operation of the life-saving device.
Pinching danger
Big blocks can break fingers instantly. Never put your hand betwixt two strong magnets.
Warning for allergy sufferers
Studies show that nickel (the usual finish) is a common allergen. If you have an allergy, avoid touching magnets with bare hands and opt for coated magnets.
Fragile material
Despite metallic appearance, neodymium is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Heat warning
Standard neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Fire warning
Fire hazard: Neodymium dust is explosive. Do not process magnets in home conditions as this risks ignition.
Powerful field
Be careful. Neodymium magnets act from a distance and snap with massive power, often faster than you can react.
This is not a toy
Strictly keep magnets away from children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are very dangerous.
