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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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Specifications along with structure of a neodymium magnet can be tested on our
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Detailed specification - 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 |
Material specification
| 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View also proposals
Strengths as well as weaknesses of neodymium magnets.
Benefits
- They have stable power, and over around ten years their performance decreases symbolically – ~1% (according to theory),
- Magnets very well defend themselves against demagnetization caused by external fields,
- A magnet with a metallic nickel surface has better aesthetics,
- They show high magnetic induction at the operating surface, which improves attraction properties,
- Thanks to resistance to high temperature, they can operate (depending on the form) even at temperatures up to 230°C and higher...
- In view of the potential of accurate shaping and customization to custom projects, NdFeB magnets can be created in a variety of forms and dimensions, which amplifies use scope,
- Fundamental importance in modern technologies – they are used in mass storage devices, electric motors, diagnostic systems, as well as technologically advanced constructions.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Cons
- Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also raises their durability
- When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their power decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 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 stable to moisture, when using outdoors
- We suggest a housing - magnetic holder, due to difficulties in realizing nuts inside the magnet and complex forms.
- Possible danger related to microscopic parts of magnets are risky, when accidentally swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small components of these devices can complicate diagnosis medical after entering 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
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what affects it?
- with the contact of a sheet made of low-carbon steel, ensuring maximum field concentration
- with a cross-section minimum 10 mm
- characterized by lack of roughness
- without any air gap between the magnet and steel
- under axial force direction (90-degree angle)
- at ambient temperature approx. 20 degrees Celsius
Magnet lifting force in use – key factors
- Distance – the presence of any layer (rust, dirt, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
- Angle of force application – highest force is obtained only during perpendicular pulling. The shear force of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Plate thickness – too thin plate does not accept the full field, causing part of the power to be lost to the other side.
- Chemical composition of the base – mild steel gives the best results. Alloy steels lower magnetic permeability and holding force.
- Plate texture – smooth surfaces guarantee perfect abutment, which improves field saturation. Rough surfaces weaken the grip.
- Temperature – heating the magnet results in weakening of force. It is worth remembering the maximum operating temperature for a given model.
Lifting capacity was assessed using a polished steel plate of optimal thickness (min. 20 mm), under vertically applied force, in contrast under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a slight gap between the magnet’s surface and the plate decreases the holding force.
Precautions when working with neodymium magnets
Choking Hazard
NdFeB magnets are not intended for children. Accidental ingestion of multiple magnets may result in them attracting across intestines, which constitutes a critical condition and requires immediate surgery.
Material brittleness
Despite metallic appearance, the material is brittle and cannot withstand shocks. Do not hit, as the magnet may crumble into sharp, dangerous pieces.
Nickel allergy
It is widely known that nickel (the usual finish) is a strong allergen. For allergy sufferers, refrain from touching magnets with bare hands or opt for encased magnets.
Mechanical processing
Combustion risk: Rare earth powder is explosive. Do not process magnets without safety gear as this risks ignition.
Compass and GPS
A powerful magnetic field negatively affects the operation of magnetometers in smartphones and navigation systems. Do not bring magnets near a device to avoid damaging the sensors.
Maximum temperature
Regular neodymium magnets (grade N) lose power when the temperature exceeds 80°C. Damage is permanent.
Electronic hazard
Device Safety: Strong magnets can ruin payment cards and sensitive devices (heart implants, medical aids, mechanical watches).
Implant safety
Warning for patients: Strong magnetic fields affect electronics. Maintain at least 30 cm distance or ask another person to work with the magnets.
Do not underestimate power
Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Think ahead.
Finger safety
Big blocks can break fingers in a fraction of a second. Do not put your hand between two strong magnets.
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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