UMT 29x38 white / N38 - board holder
board holder
Catalog no 230283
GTIN/EAN: 5906301814351
Diameter Ø
29 mm [±1 mm]
Height
38 mm [±1 mm]
Weight
6 g
Coating
[NiCuNi] Nickel
6.81 ZŁ with VAT / pcs + price for transport
5.54 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Give us a call
+48 888 99 98 98
or get in touch by means of
form
through our site.
Strength along with form of magnetic components can be calculated using our
online calculation tool.
Order by 14:00 and we’ll ship today!
Technical parameters - UMT 29x38 white / N38 - board holder
Specification / characteristics - UMT 29x38 white / N38 - board holder
| properties | values |
|---|---|
| Cat. no. | 230283 |
| GTIN/EAN | 5906301814351 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 29 mm [±1 mm] |
| Height | 38 mm [±1 mm] |
| Weight | 6 g |
| 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 |
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 |
See more offers
Pros and cons of rare earth magnets.
Strengths
- They virtually do not lose strength, because even after ten years the decline in efficiency is only ~1% (according to literature),
- They are extremely resistant to demagnetization induced by external disturbances,
- The use of an shiny finish of noble metals (nickel, gold, silver) causes the element to present itself better,
- Magnets exhibit extremely high magnetic induction on the active area,
- Through (adequate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
- Possibility of accurate forming and modifying to concrete applications,
- Huge importance in advanced technology sectors – they are commonly used in computer drives, electric drive systems, advanced medical instruments, also modern systems.
- Relatively small size with high pulling force – neodymium magnets offer high power in compact dimensions, which makes them useful in compact constructions
Weaknesses
- At strong impacts they can crack, 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 decrease their force 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 stability even at temperatures 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, when using outdoors
- Due to limitations in realizing threads and complicated forms in magnets, we propose using a housing - magnetic mechanism.
- Health risk to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child safety. Furthermore, tiny parts of these devices are able to be problematic in diagnostics medical after entering the body.
- With budget limitations the cost of neodymium magnets is economically unviable,
Pull force analysis
Magnetic strength at its maximum – what contributes to it?
- with the contact of a yoke made of special test steel, guaranteeing maximum field concentration
- whose transverse dimension is min. 10 mm
- with a surface cleaned and smooth
- under conditions of ideal adhesion (metal-to-metal)
- during pulling in a direction perpendicular to the plane
- at temperature room level
Practical lifting capacity: influencing factors
- Gap (betwixt the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) results in a drastic drop in force by up to 50% (this also applies to varnish, corrosion or dirt).
- Loading method – catalog parameter refers to detachment vertically. When slipping, the magnet holds significantly lower power (often approx. 20-30% of maximum force).
- Wall thickness – the thinner the sheet, the weaker the hold. Part of the magnetic field passes through the material instead of generating force.
- Material composition – different alloys attracts identically. Alloy additives worsen the attraction effect.
- Smoothness – ideal contact is possible only on smooth steel. Any scratches and bumps reduce the real contact area, weakening the magnet.
- Operating temperature – NdFeB sinters have a sensitivity to temperature. At higher temperatures they lose power, and at low temperatures they can be stronger (up to a certain limit).
Lifting capacity was assessed by applying a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a minimal clearance between the magnet and the plate decreases the load capacity.
Warnings
Electronic devices
Powerful magnetic fields can erase data on payment cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.
Serious injuries
Pinching hazard: The pulling power is so great that it can cause blood blisters, crushing, and even bone fractures. Protective gloves are recommended.
Medical interference
Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have medical devices.
Do not underestimate power
Handle magnets with awareness. Their powerful strength can shock even professionals. Stay alert and do not underestimate their force.
Protective goggles
Despite the nickel coating, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may crumble into sharp, dangerous pieces.
Do not overheat magnets
Do not overheat. Neodymium magnets are sensitive to heat. If you need operation above 80°C, ask us about HT versions (H, SH, UH).
Precision electronics
Be aware: rare earth magnets produce a field that confuses precision electronics. Keep a safe distance from your mobile, tablet, and GPS.
Danger to the youngest
Strictly store magnets away from children. Ingestion danger is significant, and the consequences of magnets clamping inside the body are fatal.
Combustion hazard
Drilling and cutting of NdFeB material carries a risk of fire hazard. Magnetic powder reacts violently with oxygen and is hard to extinguish.
Skin irritation risks
Some people suffer from a contact allergy to Ni, which is the standard coating for neodymium magnets. Frequent touching might lead to skin redness. We strongly advise use protective 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
Rate the product
Your rating