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UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder

search holder

Catalog no 210335

GTIN/EAN: 5906301813941

5.00

Diameter Ø

67 mm [±1 mm]

Height

28 mm [±1 mm]

Weight

700 g

Load capacity

180.00 kg / 1765.20 N

Coating

[NiCuNi] Nickel

view parameters »

110.00 ZŁ with VAT / pcs + price for transport

89.43 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety
Not sure which magnet to buy?

Call us now +48 22 499 98 98 alternatively drop us a message using contact form our website.
Force and appearance of a magnet can be checked with our modular calculator.

Same-day processing for orders placed before 14:00.

💡 Guide: How to choose a decent magnet and not get ripped off?

Don't be fooled by amateur online tests – go for certified quality and specific parameters that guarantee success:

  • 📏 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 of the product - UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder

Specification / characteristics - UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder

properties
properties values
Cat. no. 210335
GTIN/EAN 5906301813941
Production/Distribution Dhit sp. z o.o.
ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 67 mm [±1 mm]
Height 28 mm [±1 mm]
Weight 700 g
Load capacity ~ ? 180.00 kg / 1765.20 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMP 67x28 [M8+M10] GW F120 kg / N38 - search holder
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

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
Engineering data and GPSR
Chemical composition
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%
Environmental data
recyclability (EoL) 100%
recycled raw materials ~10% (pre-cons)
carbon footprint low / zredukowany
waste code (EWC) 16 02 16
Safety card (GPSR)
responsible entity
Dhit sp. z o.o.
ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki
tel: +48 22 499 98 98 | e-mail: bok@dhit.pl
batch number/type
id: 210335-2026
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It is worth betting on proven F200, F300, or F550 models from our offer, which guarantee real power. Model UMP 67x28 [M8+M10] GW F120 kg / N38 offers an optimal weight-to-pull force ratio, which is important for repeated throwing. For beginners, we recommend lighter single-sided models (F80-F200), for advanced users - heavier double-sided (Two-Side) ones.
Double-sided holders (Two-Side) have two active magnetic surfaces and two mounting holes. Side mounting is ideal for throwing from the shore, as the magnet drags flat along the bottom. Single-sided magnets are usually lighter and cheaper but less effective for long throws.
The magnet is glued into a solid steel cup and sealed with epoxy resin, protecting it from water. Despite solid construction, neodymium is a brittle material and can chip upon very strong impact (e.g., against concrete). Maintenance (e.g., WD-40) prevents surface corrosion of the steel housing.
Check the product title and description to see if you are buying just the magnet or the XL set. We often add thread glue to secure the eyelet against unscrewing in water. Using thread glue is crucial to not lose the magnet in silt.
It is a technical parameter defining perpendicular break force, not the weight of an object in water. In a river, objects are often rusty, silted, or irregular in shape (e.g., pipes), which drastically reduces grip strength. A large power reserve is essential in real search conditions.
If you find a dangerous object (unexploded ordnance) or an antique, you have a legal obligation to report it to appropriate services (Police, conservator). We recommend familiarizing yourself with current local regulations and heritage protection laws.
It is the best value because for the same money, you obtain a premium mount that will last for many seasons than generic imports.
Most magnets on the market have weak shells that deform during the any strong impact against concrete or rocks.
Many distributors employ a tactic by advertising the power tested only on the top hook. GOLD mounts guarantees full transparency by providing the real parameters of the gear, so you avoid disappointment during treasure hunting.
{In contrast to competitors importing from China, Dhit provides full support and real warranty help, which is crucial after the purchase. Every product is individually inspected before shipping, which guarantees that you receive equipment of the defect-free.

Strengths as well as weaknesses of neodymium magnets.

Benefits

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They have constant strength, and over more than 10 years their attraction force decreases symbolically – ~1% (in testing),
  • Magnets effectively resist against loss of magnetization caused by external fields,
  • The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to present itself better,
  • Magnetic induction on the top side of the magnet remains strong,
  • Due to their durability and thermal resistance, neodymium magnets can operate (depending on the form) even at high temperatures reaching 230°C or more...
  • Thanks to flexibility in designing and the ability to modify to complex applications,
  • Key role in modern technologies – they are used in HDD drives, brushless drives, diagnostic systems, as well as modern systems.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Disadvantages

Disadvantages of neodymium magnets:
  • They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets using a steel holder. Such protection not only protects the magnet but also improves its resistance to damage
  • We warn that neodymium magnets can lose their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • We suggest cover - magnetic holder, due to difficulties in producing threads inside the magnet and complex shapes.
  • Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Additionally, small components of these products can be problematic in diagnostics medical in case of swallowing.
  • Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications

Pull force analysis

Breakaway strength of the magnet in ideal conditions – what affects it?

The declared magnet strength refers to the peak performance, obtained under laboratory conditions, specifically:
  • on a plate made of mild steel, effectively closing the magnetic field
  • with a cross-section no less than 10 mm
  • with a surface free of scratches
  • under conditions of no distance (metal-to-metal)
  • under perpendicular application of breakaway force (90-degree angle)
  • in stable room temperature

Impact of factors on magnetic holding capacity in practice

During everyday use, the actual lifting capacity depends on a number of factors, listed from most significant:
  • Clearance – existence of foreign body (paint, tape, air) acts as an insulator, which reduces power steeply (even by 50% at 0.5 mm).
  • Pull-off angle – note that the magnet holds strongest perpendicularly. Under shear forces, the capacity drops significantly, often to levels of 20-30% of the nominal value.
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux passes through the material instead of generating force.
  • Material type – ideal substrate is pure iron steel. Stainless steels may have worse magnetic properties.
  • Surface quality – the smoother and more polished the plate, the better the adhesion and stronger the hold. Roughness acts like micro-gaps.
  • Thermal environment – temperature increase causes a temporary drop of induction. Check the maximum operating temperature for a given model.

Lifting capacity was assessed by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, however under shearing force the holding force is lower. In addition, even a small distance between the magnet’s surface and the plate decreases the holding force.

Safety rules for work with NdFeB magnets
This is not a toy

Product intended for adults. Small elements pose a choking risk, causing intestinal necrosis. Store out of reach of children and animals.

Keep away from electronics

Remember: neodymium magnets produce a field that disrupts sensitive sensors. Keep a separation from your phone, tablet, and navigation systems.

Serious injuries

Watch your fingers. Two powerful magnets will snap together instantly with a force of massive weight, crushing anything in their path. Exercise extreme caution!

ICD Warning

For implant holders: Powerful magnets disrupt electronics. Keep minimum 30 cm distance or ask another person to handle the magnets.

Power loss in heat

Watch the temperature. Exposing the magnet to high heat will ruin its properties and strength.

Do not underestimate power

Handle with care. Rare earth magnets attract from a long distance and connect with huge force, often faster than you can move away.

Threat to electronics

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, timepieces).

Nickel allergy

A percentage of the population suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Prolonged contact may cause dermatitis. It is best to use safety gloves.

Beware of splinters

Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to them cracking into small pieces.

Mechanical processing

Combustion risk: Rare earth powder is highly flammable. Avoid machining magnets in home conditions as this may cause fire.

Safety First! More info about hazards in the article: Magnet Safety Guide.