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UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread
magnetic holder external thread
Catalog no 190417
GTIN/EAN: 5906301813880
Diameter Ø
75 mm [±1 mm]
Height
34 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Load capacity
162.00 kg / 1588.68 N
189.42 ZŁ with VAT / pcs + price for transport
154.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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+48 888 99 98 98
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Strength along with appearance of a neodymium magnet can be checked on our
magnetic mass calculator.
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Physical properties - UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread
Specification / characteristics - UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread
| properties | values |
|---|---|
| Cat. no. | 190417 |
| GTIN/EAN | 5906301813880 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| Height | 34 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Weight | 475 g |
| Load capacity ~ ? | 162.00 kg / 1588.68 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% |
Ecology and recycling (GPSR)
| 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.
Strengths
- They do not lose strength, even after around 10 years – the reduction in lifting capacity is only ~1% (based on measurements),
- They retain their magnetic properties even under external field action,
- A magnet with a smooth silver surface has an effective appearance,
- Magnets are characterized by impressive magnetic induction on the active area,
- Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
- Possibility of exact modeling as well as optimizing to concrete requirements,
- Huge importance in modern technologies – they serve a role in HDD drives, electric motors, medical equipment, and industrial machines.
- Thanks to their power density, small magnets offer high operating force, in miniature format,
Weaknesses
- At very strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage and increases the magnet's durability.
- We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material resistant to moisture
- Due to limitations in producing nuts and complex shapes in magnets, we recommend using casing - magnetic mechanism.
- Potential hazard related to microscopic parts of magnets pose a threat, if swallowed, which gains importance in the aspect of protecting the youngest. Additionally, small elements of these magnets can complicate diagnosis medical in case of swallowing.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Holding force characteristics
Maximum lifting force for a neodymium magnet – what contributes to it?
- on a plate made of structural steel, effectively closing the magnetic field
- whose thickness equals approx. 10 mm
- with an ideally smooth touching surface
- without the slightest air gap between the magnet and steel
- during detachment in a direction perpendicular to the mounting surface
- at standard ambient temperature
Determinants of practical lifting force of a magnet
- Gap (between the magnet and the plate), since even a very small distance (e.g. 0.5 mm) leads to a drastic drop in lifting capacity by up to 50% (this also applies to varnish, rust or dirt).
- Direction of force – highest force is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is typically many times smaller (approx. 1/5 of the lifting capacity).
- Element thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Steel type – low-carbon steel attracts best. Higher carbon content decrease magnetic permeability and lifting capacity.
- Smoothness – ideal contact is possible only on polished steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Thermal conditions – NdFeB sinters have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
Lifting capacity was determined using a polished steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, in contrast under shearing force the load capacity is reduced by as much as fivefold. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.
Safety rules for work with neodymium magnets
Magnets are brittle
NdFeB magnets are sintered ceramics, meaning they are prone to chipping. Impact of two magnets leads to them breaking into small pieces.
Metal Allergy
A percentage of the population suffer from a hypersensitivity to Ni, which is the typical protective layer for neodymium magnets. Frequent touching might lead to an allergic reaction. We recommend use safety gloves.
Crushing risk
Watch your fingers. Two powerful magnets will join immediately with a force of massive weight, crushing anything in their path. Be careful!
Heat sensitivity
Regular neodymium magnets (grade N) lose magnetization when the temperature exceeds 80°C. The loss of strength is permanent.
Pacemakers
For implant holders: Strong magnetic fields affect electronics. Keep minimum 30 cm distance or ask another person to work with the magnets.
Threat to electronics
Intense magnetic fields can destroy records on payment cards, HDDs, and other magnetic media. Keep a distance of min. 10 cm.
Do not underestimate power
Before starting, read the rules. Sudden snapping can destroy the magnet or hurt your hand. Think ahead.
Adults only
Product intended for adults. Tiny parts can be swallowed, causing serious injuries. Keep away from children and animals.
Combustion hazard
Drilling and cutting of NdFeB material poses a fire risk. Neodymium dust reacts violently with oxygen and is hard to extinguish.
Compass and GPS
GPS units and smartphones are extremely susceptible to magnetism. Close proximity with a powerful NdFeB magnet can permanently damage the sensors in your phone.
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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