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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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Strength along with shape of a neodymium magnet can be tested with our
magnetic calculator.
Orders placed before 14:00 will be shipped the same business day.
Physical properties - 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% |
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 and cons of neodymium magnets.
Advantages
- They retain magnetic properties for nearly 10 years – the drop is just ~1% (based on simulations),
- They show high resistance to demagnetization induced by presence of other magnetic fields,
- A magnet with a shiny gold surface looks better,
- Neodymium magnets generate maximum magnetic induction on a small surface, which ensures high operational effectiveness,
- 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...
- Possibility of custom machining and adjusting to concrete requirements,
- Versatile presence in advanced technology sectors – they find application in computer drives, electric drive systems, medical equipment, as well as multitasking production systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Limitations
- To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Due to the susceptibility of magnets to corrosion in a humid environment, we suggest using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- We recommend cover - magnetic mount, due to difficulties in producing nuts inside the magnet and complex shapes.
- Possible danger to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, small elements of these products are able to complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which can limit application in large quantities
Pull force analysis
Highest magnetic holding force – what affects it?
- using a base made of low-carbon steel, functioning as a ideal flux conductor
- with a cross-section no less than 10 mm
- with a plane free of scratches
- with zero gap (no impurities)
- under vertical force direction (90-degree angle)
- in neutral thermal conditions
Practical aspects of lifting capacity – factors
- Distance – existence of any layer (rust, dirt, gap) acts as an insulator, which lowers power rapidly (even by 50% at 0.5 mm).
- Loading method – declared lifting capacity refers to detachment vertically. When slipping, the magnet holds significantly lower power (typically approx. 20-30% of maximum force).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Thin sheet restricts the lifting capacity (the magnet "punches through" it).
- Metal type – different alloys reacts the same. Alloy additives weaken the attraction effect.
- Smoothness – full contact is possible only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
- Thermal factor – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.
Holding force was measured on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under attempts to slide the magnet the load capacity is reduced by as much as 5 times. Moreover, even a slight gap between the magnet’s surface and the plate reduces the load capacity.
Safe handling of NdFeB magnets
Impact on smartphones
Navigation devices and smartphones are extremely sensitive to magnetism. Close proximity with a strong magnet can permanently damage the sensors in your phone.
Swallowing risk
Product intended for adults. Tiny parts can be swallowed, causing intestinal necrosis. Keep away from children and animals.
Protective goggles
Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them breaking into small pieces.
Bodily injuries
Big blocks can smash fingers instantly. Under no circumstances place your hand between two strong magnets.
Safe distance
Very strong magnetic fields can erase data on credit cards, HDDs, and storage devices. Stay away of min. 10 cm.
Heat warning
Monitor thermal conditions. Heating the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.
Handling guide
Handle magnets with awareness. Their immense force can surprise even professionals. Be vigilant and do not underestimate their force.
Implant safety
Individuals with a pacemaker must maintain an large gap from magnets. The magnetic field can stop the operation of the implant.
Allergy Warning
A percentage of the population have a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching might lead to skin redness. We recommend wear safety gloves.
Fire warning
Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this may cause fire.
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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