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UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder
search holder
Catalog no 210337
GTIN/EAN: 5906301813965
Diameter Ø
97 mm [±1 mm]
Height
40 mm [±1 mm]
Weight
2200 g
Load capacity
380.00 kg / 3726.53 N
Coating
[NiCuNi] Nickel
Magnetic Flux
~ 10 000 Gauss [±5%]
300.00 ZŁ with VAT / pcs + price for transport
243.90 ZŁ net + 23% VAT / pcs
bulk discounts:
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Force as well as structure of a neodymium magnet can be analyzed on our
magnetic mass calculator.
Same-day processing for orders placed before 14:00.
💡 Check why professionals choose Dhit over cheap substitutes
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!
Technical parameters of the product - UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder
Specification / characteristics - UMP 97x40 [M8+M10] GW F300 kg / N38 - search holder
| properties | values |
|---|---|
| Cat. no. | 210337 |
| GTIN/EAN | 5906301813965 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 97 mm [±1 mm] |
| Height | 40 mm [±1 mm] |
| Weight | 2200 g |
| Load capacity ~ ? | 380.00 kg / 3726.53 N |
| Coating | [NiCuNi] Nickel |
| Holder Type | 2 sided |
| Material Type | Structural steel S235 (ferrous) |
| Magnetic Flux | ~ 10 000 Gauss [±5%] |
| Size/Mount Quantity | 2xM8/1xM10 |
| 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 |
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Strengths as well as weaknesses of rare earth magnets.
Strengths
- They have stable power, and over around ten years their attraction force decreases symbolically – ~1% (according to theory),
- They feature excellent resistance to magnetism drop when exposed to external fields,
- The use of an aesthetic finish of noble metals (nickel, gold, silver) causes the element to look better,
- The surface of neodymium magnets generates a unique magnetic field – this is a distinguishing feature,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for functioning at temperatures reaching 230°C and above...
- Due to the ability of flexible molding and customization to individualized projects, NdFeB magnets can be manufactured in a wide range of geometric configurations, which amplifies use scope,
- Huge importance in future technologies – they find application in magnetic memories, drive modules, precision medical tools, as well as industrial machines.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Disadvantages
- They are fragile upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
- They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in creating nuts and complex shapes in magnets, we propose using cover - magnetic mechanism.
- Health risk related to microscopic parts of magnets are risky, if swallowed, which is particularly important in the context of child health protection. It is also worth noting that tiny parts of these devices are able to 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 can limit application in large quantities
Holding force characteristics
Maximum lifting force for a neodymium magnet – what it depends on?
- using a sheet made of mild steel, functioning as a circuit closing element
- possessing a massiveness of min. 10 mm to ensure full flux closure
- characterized by smoothness
- without any air gap between the magnet and steel
- during pulling in a direction vertical to the plane
- at conditions approx. 20°C
Determinants of practical lifting force of a magnet
- Distance – existence of any layer (rust, tape, gap) acts as an insulator, which reduces capacity steeply (even by 50% at 0.5 mm).
- Direction of force – highest force is obtained only during pulling at a 90° angle. The force required to slide of the magnet along the plate is typically many times lower (approx. 1/5 of the lifting capacity).
- Wall thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface structure – the more even the surface, the better the adhesion and higher the lifting capacity. Unevenness creates an air distance.
- Operating temperature – neodymium magnets have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures gain strength (up to a certain limit).
Holding force was checked on the plate surface of 20 mm thickness, when a perpendicular force was applied, however under attempts to slide the magnet the lifting capacity is smaller. Additionally, even a minimal clearance between the magnet and the plate lowers the load capacity.
Precautions when working with neodymium magnets
Pacemakers
For implant holders: Strong magnetic fields disrupt electronics. Keep at least 30 cm distance or request help to handle the magnets.
Allergy Warning
Studies show that nickel (standard magnet coating) is a strong allergen. If your skin reacts to metals, refrain from direct skin contact or select versions in plastic housing.
Serious injuries
Large magnets can break fingers in a fraction of a second. Never place your hand between two strong magnets.
Machining danger
Powder created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Material brittleness
NdFeB magnets are ceramic materials, meaning they are very brittle. Impact of two magnets will cause them shattering into shards.
Electronic devices
Device Safety: Neodymium magnets can damage payment cards and delicate electronics (pacemakers, medical aids, mechanical watches).
Compass and GPS
Note: neodymium magnets generate a field that disrupts precision electronics. Maintain a safe distance from your mobile, device, and GPS.
Respect the power
Be careful. Rare earth magnets act from a distance and connect with massive power, often quicker than you can move away.
Keep away from children
Product intended for adults. Small elements can be swallowed, causing intestinal necrosis. Store away from kids and pets.
Demagnetization risk
Watch the temperature. Exposing the magnet to high heat will ruin its properties and pulling force.
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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