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UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
magnetic holder internal thread
Catalog no 180420
GTIN/EAN: 5906301813798
Diameter Ø
75 mm [±1 mm]
Height
33 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Load capacity
162.00 kg / 1588.68 N
189.91 ZŁ with VAT / pcs + price for transport
154.40 ZŁ net + 23% VAT / pcs
bulk discounts:
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Technical of the product - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
Specification / characteristics - UMGW 75x33x18 [M10] GW / N38 - magnetic holder internal thread
| properties | values |
|---|---|
| Cat. no. | 180420 |
| GTIN/EAN | 5906301813798 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 75 mm [±1 mm] |
| Height | 33 mm [±1 mm] |
| Height | 18 mm [±1 mm] |
| Weight | 475 g |
| Load capacity ~ ? | 162.00 kg / 1588.68 N |
| 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% |
Sustainability
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
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Pros as well as cons of rare earth magnets.
Benefits
- They retain magnetic properties for nearly ten years – the loss is just ~1% (in theory),
- They show high resistance to demagnetization induced by presence of other magnetic fields,
- In other words, due to the reflective surface of gold, the element is aesthetically pleasing,
- They are known for high magnetic induction at the operating surface, which increases their power,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the form) even at a temperature of 230°C or more...
- Possibility of detailed modeling as well as adjusting to complex applications,
- Wide application in electronics industry – they find application in data components, motor assemblies, diagnostic systems, as well as multitasking production systems.
- Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Weaknesses
- Susceptibility to cracking is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a special holder, which not only protects them against impacts but also increases their durability
- When exposed to high temperature, neodymium magnets suffer a drop in power. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- Due to limitations in producing threads and complex shapes in magnets, we recommend using casing - magnetic mechanism.
- Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which is particularly important in the context of child health protection. Furthermore, small elements of these magnets can disrupt the diagnostic process medical in case of swallowing.
- Due to neodymium price, their price exceeds standard values,
Pull force analysis
Highest magnetic holding force – what affects it?
- with the contact of a yoke made of special test steel, ensuring full magnetic saturation
- possessing a thickness of minimum 10 mm to ensure full flux closure
- with an ground contact surface
- with total lack of distance (no paint)
- under axial force vector (90-degree angle)
- at conditions approx. 20°C
Determinants of lifting force in real conditions
- Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
- Force direction – declared lifting capacity refers to pulling vertically. When attempting to slide, the magnet exhibits much less (often approx. 20-30% of maximum force).
- Element thickness – for full efficiency, the steel must be adequately massive. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
- Material composition – different alloys reacts the same. Alloy additives worsen the interaction with the magnet.
- Surface finish – full contact is possible only on smooth steel. Any scratches and bumps create air cushions, weakening the magnet.
- Heat – NdFeB sinters have a negative temperature coefficient. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, in contrast under attempts to slide the magnet the lifting capacity is smaller. In addition, even a minimal clearance between the magnet’s surface and the plate reduces the lifting capacity.
Safe handling of neodymium magnets
Material brittleness
Protect your eyes. Magnets can explode upon violent connection, launching shards into the air. Wear goggles.
Adults only
These products are not intended for children. Swallowing several magnets may result in them connecting inside the digestive tract, which constitutes a severe health hazard and requires urgent medical intervention.
Keep away from computers
Data protection: Strong magnets can damage payment cards and sensitive devices (heart implants, medical aids, timepieces).
Heat warning
Standard neodymium magnets (grade N) lose magnetization when the temperature surpasses 80°C. Damage is permanent.
Pinching danger
Big blocks can smash fingers instantly. Never place your hand between two strong magnets.
Machining danger
Fire hazard: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.
GPS and phone interference
A powerful magnetic field interferes with the functioning of compasses in phones and navigation systems. Maintain magnets near a device to prevent damaging the sensors.
Life threat
For implant holders: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.
Do not underestimate power
Use magnets consciously. Their immense force can surprise even professionals. Be vigilant and respect their force.
Nickel coating and allergies
Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If an allergic reaction appears, immediately stop handling magnets and use protective gear.
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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