UMC 20x6/3x7 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320407
GTIN/EAN: 5906301814634
Diameter
20 mm [±1 mm]
internal diameter Ø
6/3 mm [±1 mm]
Height
7 mm [±1 mm]
Weight
12 g
Load capacity
6.00 kg / 58.84 N
Coating
[NiCuNi] Nickel
6.99 ZŁ with VAT / pcs + price for transport
5.68 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical details - UMC 20x6/3x7 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 20x6/3x7 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320407 |
| GTIN/EAN | 5906301814634 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 20 mm [±1 mm] |
| internal diameter Ø | 6/3 mm [±1 mm] |
| Height | 7 mm [±1 mm] |
| Weight | 12 g |
| Load capacity ~ ? | 6.00 kg / 58.84 N |
| Coating | [NiCuNi] Nickel |
| 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 |
Elemental analysis
| 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 and weaknesses of Nd2Fe14B magnets.
Pros
- They do not lose power, even during nearly 10 years – the reduction in strength is only ~1% (based on measurements),
- They have excellent resistance to magnetism drop as a result of external fields,
- Thanks to the smooth finish, the plating of nickel, gold, or silver gives an clean appearance,
- Magnets possess extremely high magnetic induction on the working surface,
- Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures reaching 230°C and above...
- Possibility of exact forming as well as modifying to complex needs,
- Huge importance in high-tech industry – they serve a role in mass storage devices, electromotive mechanisms, diagnostic systems, and complex engineering applications.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Weaknesses
- At strong impacts they can break, therefore we recommend placing them in strong housings. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets lose power when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of power (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- Due to the susceptibility of magnets to corrosion in a humid environment, we recommend using waterproof magnets made of rubber, plastic or other material immune to moisture, when using outdoors
- Due to limitations in realizing threads and complex shapes in magnets, we recommend using a housing - magnetic mechanism.
- Possible danger resulting from small fragments of magnets can be dangerous, if swallowed, which becomes key in the context of child health protection. It is also worth noting that tiny parts of these magnets are able to complicate diagnosis medical in case of swallowing.
- With budget limitations the cost of neodymium magnets can be a barrier,
Holding force characteristics
Maximum holding power of the magnet – what it depends on?
- using a plate made of mild steel, serving as a ideal flux conductor
- possessing a massiveness of min. 10 mm to avoid saturation
- characterized by smoothness
- under conditions of no distance (surface-to-surface)
- under perpendicular force direction (90-degree angle)
- in stable room temperature
Key elements affecting lifting force
- Air gap (between the magnet and the plate), because even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to paint, corrosion or dirt).
- Angle of force application – highest force is available only during perpendicular pulling. The force required to slide of the magnet along the plate is standardly several times lower (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be adequately massive. Thin sheet limits the lifting capacity (the magnet "punches through" it).
- Chemical composition of the base – low-carbon steel attracts best. Alloy admixtures lower magnetic permeability and holding force.
- Surface quality – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness acts like micro-gaps.
- Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently demagnetize the magnet.
Lifting capacity was measured by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular detachment force, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.
H&S for magnets
Precision electronics
A strong magnetic field disrupts the functioning of magnetometers in phones and navigation systems. Maintain magnets close to a smartphone to avoid damaging the sensors.
Protect data
Avoid bringing magnets near a wallet, laptop, or TV. The magnetism can permanently damage these devices and erase data from cards.
Fragile material
Beware of splinters. Magnets can fracture upon violent connection, ejecting shards into the air. Wear goggles.
Respect the power
Handle magnets with awareness. Their immense force can surprise even experienced users. Stay alert and respect their power.
Permanent damage
Regular neodymium magnets (N-type) undergo demagnetization when the temperature exceeds 80°C. Damage is permanent.
No play value
Neodymium magnets are not toys. Eating a few magnets may result in them connecting inside the digestive tract, which poses a direct threat to life and necessitates immediate surgery.
Physical harm
Protect your hands. Two powerful magnets will snap together instantly with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Machining danger
Powder created during grinding of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.
Skin irritation risks
Nickel alert: The Ni-Cu-Ni coating consists of nickel. If an allergic reaction occurs, cease handling magnets and use protective gear.
Pacemakers
People with a heart stimulator should keep an safe separation from magnets. The magnetism can disrupt the functioning of the life-saving device.
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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