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UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread
magnetic holder external thread
Catalog no 190321
GTIN/EAN: 5906301813804
Diameter Ø
16 mm [±1 mm]
Height
13 mm [±1 mm]
Height
5 mm [±1 mm]
Weight
7 g
Load capacity
5.00 kg / 49.03 N
3.89 ZŁ with VAT / pcs + price for transport
3.16 ZŁ net + 23% VAT / pcs
bulk discounts:
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Product card - UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread
Specification / characteristics - UMGZ 16x13x5 [M4] GZ / N38 - magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 190321 |
| GTIN/EAN | 5906301813804 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 16 mm [±1 mm] |
| Height | 13 mm [±1 mm] |
| Height | 5 mm [±1 mm] |
| Weight | 7 g |
| Load capacity ~ ? | 5.00 kg / 49.03 N |
| 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 |
See also products
![UMH 75x18x68 [M8] / N38 - magnetic holder with hook](https://cdn3.dhit.pl/graphics/products/umh-75x18x68-m8-wag.jpg "UMH 75x18x68 [M8] / N38 - magnetic holder with hook")
Pros as well as cons of Nd2Fe14B magnets.
Advantages
- They have constant strength, and over more than ten years their performance decreases symbolically – ~1% (according to theory),
- They are noted for resistance to demagnetization induced by external disturbances,
- In other words, due to the smooth finish of gold, the element gains visual value,
- The surface of neodymium magnets generates a concentrated magnetic field – this is a key feature,
- Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling action at temperatures reaching 230°C and above...
- Thanks to freedom in constructing and the ability to customize to client solutions,
- Huge importance in modern technologies – they are used in HDD drives, brushless drives, medical equipment, as well as industrial machines.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation as well as corrosion.
- Limited possibility of creating threads in the magnet and complicated shapes - preferred is a housing - magnetic holder.
- Potential hazard resulting from small fragments of magnets pose a threat, if swallowed, which is particularly important in the aspect of protecting the youngest. It is also worth noting that small components of these magnets can complicate diagnosis medical after entering the body.
- With budget limitations the cost of neodymium magnets can be a barrier,
Lifting parameters
Maximum lifting force for a neodymium magnet – what affects it?
- using a base made of low-carbon steel, functioning as a circuit closing element
- whose thickness equals approx. 10 mm
- with an ideally smooth touching surface
- with zero gap (no paint)
- under vertical force vector (90-degree angle)
- at temperature approx. 20 degrees Celsius
Impact of factors on magnetic holding capacity in practice
- Gap between surfaces – 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 – catalog parameter refers to detachment vertically. When slipping, the magnet holds much less (often approx. 20-30% of nominal force).
- Substrate thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the attraction force (the magnet "punches through" it).
- Material composition – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Surface structure – the smoother and more polished the surface, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
- Thermal environment – heating the magnet results in weakening of induction. It is worth remembering the thermal limit for a given model.
Lifting capacity testing was performed on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a slight gap between the magnet and the plate lowers the holding force.
Safe handling of neodymium magnets
Finger safety
Protect your hands. Two large magnets will snap together immediately with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Medical implants
For implant holders: Strong magnetic fields disrupt medical devices. Maintain at least 30 cm distance or ask another person to handle the magnets.
Danger to the youngest
Strictly keep magnets out of reach of children. Choking hazard is high, and the effects of magnets connecting inside the body are life-threatening.
Heat sensitivity
Avoid heat. NdFeB magnets are sensitive to heat. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).
Electronic devices
Very strong magnetic fields can destroy records on credit cards, HDDs, and other magnetic media. Maintain a gap of at least 10 cm.
Metal Allergy
Some people experience a sensitization to Ni, which is the standard coating for NdFeB magnets. Prolonged contact may cause dermatitis. We suggest use protective gloves.
Impact on smartphones
Remember: neodymium magnets generate a field that confuses precision electronics. Maintain a safe distance from your phone, device, and GPS.
Do not drill into magnets
Dust created during machining of magnets is self-igniting. Do not drill into magnets without proper cooling and knowledge.
Magnet fragility
Neodymium magnets are sintered ceramics, meaning they are fragile like glass. Collision of two magnets will cause them cracking into small pieces.
Do not underestimate power
Handle with care. Rare earth magnets act from a distance and connect with huge force, often quicker than you can move away.
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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