![Magnetic holder with external thread UMGZ 20x15x7 [M4] GZ / N38](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnetic holder with external thread UMGZ 20x15x7 [M4] GZ / N38")
![UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread](https://cdn3.dhit.pl/graphics/products/um-20x15x7-m4-gz-vaf.jpg)
![UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread - ujęcie 2](https://cdn3.dhit.pl/graphics/products/umgw-20x15x7-m4-gz-jeb.jpg)
UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread
magnetic holder external thread
Catalog no 190322
GTIN/EAN: 5906301813811
Diameter Ø
20 mm [±1 mm]
Height
15 mm [±1 mm]
Height
7 mm [±1 mm]
Weight
14 g
Load capacity
9.00 kg / 88.26 N
7.22 ZŁ with VAT / pcs + price for transport
5.87 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
if you prefer let us know by means of
our online form
the contact page.
Lifting power as well as appearance of a neodymium magnet can be reviewed with our
magnetic calculator.
Orders placed before 14:00 will be shipped the same business day.
Technical of the product - UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread
Specification / characteristics - UMGZ 20x15x7 [M4] GZ / N38 - magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 190322 |
| GTIN/EAN | 5906301813811 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 20 mm [±1 mm] |
| Height | 15 mm [±1 mm] |
| Height | 7 mm [±1 mm] |
| Weight | 14 g |
| Load capacity ~ ? | 9.00 kg / 88.26 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 |
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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
See more offers
![UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread](https://cdn3.dhit.pl/graphics/products/umgw-75x33x18-m10-gw-cak.jpg "UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread")
![SM 18x175 [2xM5] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-18x175-2xm5-rov.jpg "SM 18x175 [2xM5] / N42 - magnetic separator")
Pros as well as cons of Nd2Fe14B magnets.
Pros
- They retain full power for nearly 10 years – the loss is just ~1% (according to analyses),
- Neodymium magnets remain exceptionally resistant to loss of magnetic properties caused by external field sources,
- By applying a lustrous coating of silver, the element gains an aesthetic look,
- Magnets are distinguished by exceptionally strong magnetic induction on the working surface,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
- Considering the potential of free molding and adaptation to individualized requirements, neodymium magnets can be created in a wide range of shapes and sizes, which expands the range of possible applications,
- Huge importance in modern technologies – they are used in data components, drive modules, medical equipment, also other advanced devices.
- Compactness – despite small sizes they provide effective action, making them ideal for precision applications
Disadvantages
- At very strong impacts they can break, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage and increases the magnet's durability.
- Neodymium magnets demagnetize 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 very resistant to heat
- Magnets exposed to a humid environment can corrode. Therefore during using outdoors, we advise using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
- We recommend a housing - magnetic holder, due to difficulties in creating threads inside the magnet and complicated forms.
- Potential hazard resulting from small fragments of magnets can be dangerous, in case of ingestion, which becomes key in the context of child safety. Furthermore, small elements of these devices can complicate diagnosis medical when they are in the body.
- High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which hinders application in large quantities
Lifting parameters
Detachment force of the magnet in optimal conditions – what contributes to it?
- using a plate made of high-permeability steel, functioning as a circuit closing element
- with a thickness of at least 10 mm
- characterized by smoothness
- with zero gap (without paint)
- for force applied at a right angle (in the magnet axis)
- at ambient temperature room level
Determinants of lifting force in real conditions
- Clearance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
- Force direction – declared lifting capacity refers to detachment vertically. When applying parallel force, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Base massiveness – insufficiently thick sheet causes magnetic saturation, causing part of the flux to be escaped into the air.
- Chemical composition of the base – low-carbon steel gives the best results. Alloy admixtures decrease magnetic properties and lifting capacity.
- Plate texture – ground elements ensure maximum contact, which increases field saturation. Uneven metal weaken the grip.
- Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, however under attempts to slide the magnet the holding force is lower. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.
Precautions when working with neodymium magnets
Protective goggles
Despite the nickel coating, the material is delicate and not impact-resistant. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Nickel allergy
Certain individuals have a sensitization to Ni, which is the common plating for NdFeB magnets. Frequent touching may cause an allergic reaction. It is best to use protective gloves.
Conscious usage
Exercise caution. Neodymium magnets attract from a distance and snap with huge force, often quicker than you can react.
Phone sensors
An intense magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Keep magnets near a smartphone to prevent breaking the sensors.
Finger safety
Large magnets can crush fingers instantly. Under no circumstances place your hand between two strong magnets.
Demagnetization risk
Keep cool. Neodymium magnets are susceptible to heat. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).
Warning for heart patients
Health Alert: Strong magnets can deactivate heart devices and defibrillators. Do not approach if you have medical devices.
Cards and drives
Device Safety: Neodymium magnets can ruin data carriers and delicate electronics (pacemakers, hearing aids, mechanical watches).
Fire warning
Drilling and cutting of neodymium magnets poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Choking Hazard
Product intended for adults. Small elements pose a choking risk, leading to serious injuries. Store away from children and animals.
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
Rate the product
Your rating