HH 16x5.3 [M3] / N38 - through hole magnetic holder
through hole magnetic holder
Catalog no 370480
GTIN: 5906301814900
Diameter Ø [±0,1 mm]
16 mm
Height [±0,1 mm]
5.3 mm
Weight
6.4 g
Magnetization Direction
↑ axial
Load capacity
4 kg / 39.23 N
Coating
[NiCuNi] nickel
3.32 ZŁ with VAT / pcs + price for transport
2.70 ZŁ net + 23% VAT / pcs
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Strengths and weaknesses of neodymium magnets.
Besides their durability, neodymium magnets are valued for these benefits:
- They have constant strength, and over around ten years their performance decreases symbolically – ~1% (in testing),
- Magnets very well defend themselves against loss of magnetization caused by external fields,
- The use of an elegant coating of noble metals (nickel, gold, silver) causes the element to have aesthetics,
- Neodymium magnets deliver maximum magnetic induction on a their surface, 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...
- Considering the ability of precise molding and customization to specialized solutions, neodymium magnets can be modeled in a wide range of forms and dimensions, which increases their versatility,
- Fundamental importance in future technologies – they are used in data components, electric motors, precision medical tools, also complex engineering applications.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Cons of neodymium magnets: tips and applications.
- Brittleness is one of their disadvantages. Upon intense impact they can break. We advise keeping them in a strong case, which not only secures them against impacts but also raises their durability
- Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
- They oxidize in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited possibility of making nuts in the magnet and complicated forms - preferred is cover - magnet mounting.
- Potential hazard resulting from small fragments of magnets are risky, in case of ingestion, which becomes key in the aspect of protecting the youngest. Furthermore, small elements of these magnets are able to complicate diagnosis medical after entering the body.
- Due to neodymium price, their price is higher than average,
Maximum holding power of the magnet – what contributes to it?
The force parameter is a measurement result conducted under specific, ideal conditions:
- on a block made of mild steel, effectively closing the magnetic field
- whose transverse dimension is min. 10 mm
- with an ground touching surface
- with total lack of distance (no impurities)
- for force applied at a right angle (in the magnet axis)
- in neutral thermal conditions
Determinants of lifting force in real conditions
It is worth knowing that the working load may be lower influenced by elements below, in order of importance:
- Distance (betwixt the magnet and the plate), as even a microscopic clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, rust or debris).
- 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.
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
- Chemical composition of the base – mild steel gives the best results. Alloy steels reduce magnetic permeability and lifting capacity.
- Surface condition – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces reduce efficiency.
- Temperature – heating the magnet results in weakening of force. It is worth remembering the thermal limit for a given model.
* Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, whereas under attempts to slide the magnet the lifting capacity is smaller. In addition, even a slight gap {between} the magnet and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Shattering risk
Protect your eyes. Magnets can explode upon violent connection, ejecting shards into the air. Eye protection is mandatory.
Product not for children
Strictly store magnets out of reach of children. Ingestion danger is high, and the effects of magnets clamping inside the body are very dangerous.
Heat warning
Avoid heat. Neodymium magnets are susceptible to heat. If you require resistance above 80°C, ask us about HT versions (H, SH, UH).
Pacemakers
Warning for patients: Strong magnetic fields affect medical devices. Maintain minimum 30 cm distance or ask another person to work with the magnets.
GPS Danger
GPS units and mobile phones are extremely susceptible to magnetism. Direct contact with a powerful NdFeB magnet can permanently damage the sensors in your phone.
Dust explosion hazard
Drilling and cutting of NdFeB material poses a fire hazard. Magnetic powder oxidizes rapidly with oxygen and is hard to extinguish.
Serious injuries
Big blocks can break fingers in a fraction of a second. Under no circumstances put your hand between two strong magnets.
Keep away from computers
Avoid bringing magnets near a wallet, computer, or TV. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Do not underestimate power
Use magnets consciously. Their powerful strength can surprise even professionals. Be vigilant and do not underestimate their power.
Nickel allergy
Certain individuals experience a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Prolonged contact can result in skin redness. We strongly advise wear protective gloves.
Important!
Need more info? Read our article: Why are neodymium magnets dangerous?
