UMC 32x11/3x8 / N38 - cylindrical magnetic holder
cylindrical magnetic holder
Catalog no 320409
GTIN/EAN: 5906301814658
Diameter
32 mm [±1 mm]
internal diameter Ø
11/3 mm [±1 mm]
Height
8 mm [±1 mm]
Weight
36 g
Magnetization Direction
↑ axial
Load capacity
23.00 kg / 225.55 N
Coating
[NiCuNi] Nickel
17.98 ZŁ with VAT / pcs + price for transport
14.62 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Call us
+48 22 499 98 98
alternatively let us know using
form
the contact form page.
Lifting power and structure of a magnet can be estimated with our
magnetic calculator.
Orders placed before 14:00 will be shipped the same business day.
Technical parameters - UMC 32x11/3x8 / N38 - cylindrical magnetic holder
Specification / characteristics - UMC 32x11/3x8 / N38 - cylindrical magnetic holder
| properties | values |
|---|---|
| Cat. no. | 320409 |
| GTIN/EAN | 5906301814658 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter | 32 mm [±1 mm] |
| internal diameter Ø | 11/3 mm [±1 mm] |
| Height | 8 mm [±1 mm] |
| Weight | 36 g |
| Magnetization Direction | ↑ axial |
| Load capacity ~ ? | 23.00 kg / 225.55 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 |
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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View more proposals
Pros as well as cons of neodymium magnets.
Advantages
- They virtually do not lose power, because even after ten years the performance loss is only ~1% (based on calculations),
- They are resistant to demagnetization induced by presence of other magnetic fields,
- In other words, due to the shiny finish of nickel, the element is aesthetically pleasing,
- They show high magnetic induction at the operating surface, which affects their effectiveness,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, enabling functioning at temperatures approaching 230°C and above...
- Possibility of precise modeling and adjusting to specific needs,
- Key role in modern industrial fields – they are used in hard drives, electric drive systems, medical equipment, also technologically advanced constructions.
- Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in small dimensions, which allows their use in miniature devices
Cons
- They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also improves its resistance to damage
- When exposed to high temperature, neodymium magnets experience a drop in force. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size and shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
- They rust in a humid environment. For use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Due to limitations in realizing threads and complex shapes in magnets, we recommend using a housing - magnetic holder.
- Possible danger to health – tiny shards of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. Additionally, small components of these devices can be problematic in diagnostics medical when they are in the body.
- With budget limitations the cost of neodymium magnets is a challenge,
Pull force analysis
Best holding force of the magnet in ideal parameters – what it depends on?
- using a sheet made of mild steel, serving as a ideal flux conductor
- with a thickness of at least 10 mm
- with an ideally smooth contact surface
- with direct contact (without coatings)
- during detachment in a direction vertical to the plane
- at conditions approx. 20°C
Determinants of practical lifting force of a magnet
- Clearance – existence of foreign body (rust, tape, gap) interrupts the magnetic circuit, which lowers power steeply (even by 50% at 0.5 mm).
- Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the surface is standardly several times lower (approx. 1/5 of the lifting capacity).
- Element thickness – to utilize 100% power, the steel must be sufficiently thick. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
- Steel type – mild steel gives the best results. Alloy admixtures reduce magnetic permeability and holding force.
- Surface finish – full contact is possible only on smooth steel. Rough texture reduce the real contact area, reducing force.
- Thermal factor – hot environment reduces pulling force. Too high temperature can permanently demagnetize the magnet.
Lifting capacity testing was performed on plates with a smooth surface of suitable thickness, under perpendicular forces, however under attempts to slide the magnet the holding force is lower. Moreover, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.
H&S for magnets
Dust is flammable
Dust generated during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Allergy Warning
Medical facts indicate that nickel (the usual finish) is a strong allergen. For allergy sufferers, refrain from direct skin contact or choose coated magnets.
Caution required
Before use, read the rules. Uncontrolled attraction can destroy the magnet or injure your hand. Be predictive.
Beware of splinters
NdFeB magnets are ceramic materials, meaning they are prone to chipping. Impact of two magnets leads to them cracking into shards.
Permanent damage
Watch the temperature. Exposing the magnet above 80 degrees Celsius will permanently weaken its magnetic structure and strength.
Magnetic media
Avoid bringing magnets close to a purse, computer, or screen. The magnetic field can irreversibly ruin these devices and wipe information from cards.
Implant safety
Medical warning: Strong magnets can deactivate pacemakers and defibrillators. Stay away if you have electronic implants.
Bone fractures
Mind your fingers. Two large magnets will snap together instantly with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!
Swallowing risk
Adult use only. Tiny parts can be swallowed, causing intestinal necrosis. Store away from kids and pets.
Phone sensors
A strong magnetic field negatively affects the operation of compasses in smartphones and GPS navigation. Maintain magnets close to a smartphone to avoid breaking the sensors.
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