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UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder
search holder
Catalog no 210421
GTIN/EAN: 5906301814061
Diameter Ø
75 mm [±1 mm]
Height
25 mm [±1 mm]
Weight
900 g
Load capacity
310.00 kg / 3040.06 N
Coating
[NiCuNi] Nickel
Magnetic Flux
~ 8 000 Gauss [±5%]
150.00 ZŁ with VAT / pcs + price for transport
121.95 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Pick up the phone and ask
+48 22 499 98 98
otherwise send us a note by means of
contact form
our website.
Force as well as form of neodymium magnets can be checked with our
our magnetic calculator.
Same-day shipping for orders placed before 14:00.
💡 Guide: How to choose a decent magnet and not get ripped off?
Instead of believing fairy tales on YouTube with tests on uncertified equipment, see what really determines your magnet's power:
- 📏 Magnet thickness in the casing (min. 10mm) – This is what matters most! Thin magnets are weak. Thanks to the 1cm thickness of N52 neodymium, your magnet "sees" metal even through thick rust and mud.
- 🛡️ Armored protection (Black Epoxy) – Forget about rust. This coating doesn't chip when hitting rocks and protects the magnet in water much better than regular nickel, which fails quickly.
- 🧲 Eyelets that don't steal power – Made of special non-magnetic steel, so they don't stick to the magnet and don't block the force. Important: mount only one eyelet at a time! Using 3 at once is a mistake that weakens the magnet.
- 🧶 Certified rope (min. 8mm) – You gain the certainty that your gear won't stay at the bottom. It's thick and comfortable, so it doesn't cut your fingers when pulling out heavy scrap metal.
- 🚀 Our advantage: We are the only ones combining the strongest N52 neodymium (10mm thick) with non-magnetic eyelets. This is real power and durability you won't find anywhere else.
Invest in solid equipment and enjoy the results!
Product card - UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder
Specification / characteristics - UMP 75x25 [M10x3] GW F200 GOLD / N42 - search holder
| properties | values |
|---|---|
| Cat. no. | 210421 |
| GTIN/EAN | 5906301814061 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| Height | 25 mm [±1 mm] |
| Weight | 900 g |
| Load capacity ~ ? | 310.00 kg / 3040.06 N |
| Coating | [NiCuNi] Nickel |
| Series | GOLD |
| Holder Type | 2 sided |
| Material Type | Structural steel S235 (ferrous) |
| Magnetic Flux | ~ 8 000 Gauss [±5%] |
| Size/Mount Quantity | 3xM10 |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N42
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.9-13.2 | kGs |
| remenance Br [min. - max.] ? | 1290-1320 | mT |
| coercivity bHc ? | 10.8-12.0 | kOe |
| coercivity bHc ? | 860-955 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 40-42 | BH max MGOe |
| energy density [min. - max.] ? | 318-334 | 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 |
Other products
Advantages as well as disadvantages of neodymium magnets.
Advantages
- They retain attractive force for nearly 10 years – the drop is just ~1% (according to analyses),
- Magnets very well protect themselves against demagnetization caused by foreign field sources,
- In other words, due to the aesthetic layer of gold, the element gains visual value,
- Neodymium magnets deliver maximum magnetic induction on a small area, which allows for strong attraction,
- 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 custom shaping and adapting to individual conditions,
- Fundamental importance in high-tech industry – they are used in magnetic memories, electromotive mechanisms, medical devices, as well as industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Disadvantages
- To avoid cracks upon strong impacts, we recommend using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- When exposed to high temperature, neodymium magnets suffer a drop in force. Often, when the temperature exceeds 80°C, their strength 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 recommend using waterproof magnets made of rubber, plastic or other material stable to moisture, in case of application outdoors
- Due to limitations in producing nuts and complicated shapes in magnets, we recommend using casing - magnetic mount.
- Potential hazard related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child health protection. Additionally, tiny parts of these magnets can complicate diagnosis medical when they are in the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Pull force analysis
Maximum holding power of the magnet – what affects it?
- using a plate made of high-permeability steel, functioning as a magnetic yoke
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with a surface free of scratches
- under conditions of no distance (surface-to-surface)
- under perpendicular force vector (90-degree angle)
- at room temperature
Lifting capacity in real conditions – factors
- Distance (between the magnet and the metal), since even a tiny distance (e.g. 0.5 mm) results in a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- Load vector – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the surface is usually many times lower (approx. 1/5 of the lifting capacity).
- Metal thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of converting into lifting capacity.
- Steel type – low-carbon steel attracts best. Alloy steels lower magnetic permeability and lifting capacity.
- Base smoothness – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
- Temperature – temperature increase results in weakening of induction. Check the thermal limit for a given model.
Lifting capacity testing was carried out on a smooth plate of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the lifting capacity.
H&S for magnets
Operating temperature
Regular neodymium magnets (N-type) undergo demagnetization when the temperature goes above 80°C. The loss of strength is permanent.
Caution required
Use magnets consciously. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their power.
Nickel allergy
It is widely known that the nickel plating (standard magnet coating) is a strong allergen. For allergy sufferers, avoid touching magnets with bare hands and opt for versions in plastic housing.
Electronic hazard
Intense magnetic fields can corrupt files on credit cards, HDDs, and storage devices. Maintain a gap of min. 10 cm.
Fire risk
Powder generated during grinding of magnets is flammable. Do not drill into magnets unless you are an expert.
Medical implants
Patients with a heart stimulator have to keep an large gap from magnets. The magnetic field can disrupt the functioning of the life-saving device.
No play value
Always keep magnets away from children. Choking hazard is high, and the effects of magnets connecting inside the body are fatal.
Fragile material
Watch out for shards. Magnets can explode upon uncontrolled impact, launching sharp fragments into the air. Eye protection is mandatory.
Threat to navigation
Remember: neodymium magnets produce a field that interferes with precision electronics. Maintain a safe distance from your phone, device, and navigation systems.
Physical harm
Pinching hazard: The pulling power is so great that it can cause hematomas, crushing, and even bone fractures. 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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