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UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180420
GTIN/EAN: 5906301813798
Diameter Ø
75 mm [±1 mm]
Height
33 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Load capacity
162.00 kg / 1588.68 N
189.91 ZŁ with VAT / pcs + price for transport
154.40 ZŁ net + 23% VAT / pcs
bulk discounts:
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Physical properties - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180420 |
| GTIN/EAN | 5906301813798 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| Height | 33 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 |
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 |
See also proposals
![SM 32x225 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x225-2xm8-zix.jpg "SM 32x225 [2xM8] / N52 - magnetic separator")
![SM 25x275 [2xM8] / N52 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-25x275-2xm8-vih.jpg "SM 25x275 [2xM8] / N52 - magnetic separator")
Pros and cons of rare earth magnets.
Strengths
- They retain full power for nearly 10 years – the loss is just ~1% (according to analyses),
- They show high resistance to demagnetization induced by external magnetic fields,
- Thanks to the shiny finish, the coating of Ni-Cu-Ni, gold-plated, or silver-plated gives an elegant appearance,
- Magnets possess impressive magnetic induction on the outer layer,
- 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...
- Possibility of accurate forming as well as adapting to complex applications,
- Significant place in future technologies – they are commonly used in HDD drives, motor assemblies, precision medical tools, also technologically advanced constructions.
- Thanks to concentrated force, small magnets offer high operating force, in miniature format,
Weaknesses
- 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 improves its resistance to damage
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which secure oxidation as well as corrosion.
- We recommend a housing - magnetic holder, due to difficulties in realizing threads inside the magnet and complicated forms.
- Possible danger to health – tiny shards of magnets can be dangerous, in case of ingestion, which gains importance in the aspect of protecting the youngest. Additionally, tiny parts of these devices can be problematic in diagnostics medical in case of swallowing.
- High unit price – neodymium magnets have a higher price than other types of magnets (e.g. ferrite), which increases costs of application in large quantities
Holding force characteristics
Optimal lifting capacity of a neodymium magnet – what it depends on?
- using a sheet made of mild steel, serving as a ideal flux conductor
- whose thickness is min. 10 mm
- with a surface cleaned and smooth
- without any clearance between the magnet and steel
- for force applied at a right angle (pull-off, not shear)
- at standard ambient temperature
Determinants of lifting force in real conditions
- Clearance – the presence of foreign body (rust, tape, gap) acts as an insulator, which reduces power rapidly (even by 50% at 0.5 mm).
- Force direction – remember that the magnet holds strongest perpendicularly. Under sliding down, the capacity drops drastically, often to levels of 20-30% of the nominal value.
- Steel thickness – insufficiently thick steel does not close the flux, causing part of the power to be lost into the air.
- Steel grade – the best choice is pure iron steel. Cast iron may generate lower lifting capacity.
- Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
- Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, in contrast under shearing force the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate reduces the holding force.
Safety rules for work with NdFeB magnets
Mechanical processing
Combustion risk: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this risks ignition.
Warning for allergy sufferers
A percentage of the population suffer from a sensitization to Ni, which is the common plating for NdFeB magnets. Frequent touching may cause skin redness. We recommend use safety gloves.
Data carriers
Device Safety: Strong magnets can ruin payment cards and sensitive devices (pacemakers, hearing aids, timepieces).
Fragile material
NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them cracking into shards.
Operating temperature
Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Do not underestimate power
Handle magnets with awareness. Their powerful strength can shock even professionals. Plan your moves and respect their force.
Phone sensors
Navigation devices and smartphones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can decalibrate the sensors in your phone.
Do not give to children
Strictly store magnets out of reach of children. Risk of swallowing is significant, and the effects of magnets connecting inside the body are fatal.
Warning for heart patients
People with a ICD must keep an absolute distance from magnets. The magnetism can interfere with the operation of the life-saving device.
Pinching danger
Risk of injury: The attraction force is so immense that it can result in blood blisters, pinching, and broken bones. Use thick gloves.
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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