SMZR 25x200 / N52 - magnetic separator with handle
magnetic separator with handle
Catalog no 140444
GTIN: 5906301813507
Diameter Ø
25 mm [±1 mm]
Height
200 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 9 500 Gauss [±5%]
553.50 ZŁ with VAT / pcs + price for transport
450.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Specifications as well as shape of neodymium magnets can be reviewed on our
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Magnetic properties of material N52
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros as well as cons of neodymium magnets.
Besides their stability, neodymium magnets are valued for these benefits:
- Their magnetic field is maintained, and after approximately 10 years it decreases only by ~1% (according to research),
- Magnets perfectly protect themselves against loss of magnetization caused by external fields,
- In other words, due to the reflective layer of gold, the element becomes visually attractive,
- The surface of neodymium magnets generates a unique magnetic field – this is a key feature,
- 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 individual creating as well as modifying to specific requirements,
- Versatile presence in future technologies – they are used in HDD drives, motor assemblies, precision medical tools, also modern systems.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Characteristics of disadvantages of neodymium magnets and ways of using them
- Brittleness is one of their disadvantages. Upon strong impact they can fracture. We recommend keeping them in a steel housing, which not only secures them against impacts but also increases their durability
- Neodymium magnets lose their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain stability even at temperatures up to 230°C
- They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
- Limited possibility of creating threads in the magnet and complicated shapes - preferred is cover - magnetic holder.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. It is also worth noting that tiny parts of these magnets can disrupt the diagnostic process medical after entering the body.
- With mass production the cost of neodymium magnets is a challenge,
Best holding force of the magnet in ideal parameters – what affects it?
The declared magnet strength refers to the peak performance, measured under optimal environment, namely:
- with the use of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- possessing a massiveness of at least 10 mm to avoid saturation
- characterized by lack of roughness
- with total lack of distance (no impurities)
- for force applied at a right angle (in the magnet axis)
- at temperature room level
Practical lifting capacity: influencing factors
Effective lifting capacity impacted by specific conditions, mainly (from most important):
- Distance – the presence of any layer (paint, tape, gap) interrupts the magnetic circuit, which lowers capacity rapidly (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When applying parallel force, 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 penetrates through instead of converting into lifting capacity.
- Metal type – different alloys reacts the same. High carbon content worsen the interaction with the magnet.
- Surface finish – ideal contact is obtained only on polished steel. Rough texture create air cushions, weakening the magnet.
- Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost they can be stronger (up to a certain limit).
* Lifting capacity testing was carried out on plates with a smooth surface of suitable thickness, under a perpendicular pulling force, whereas under parallel forces the lifting capacity is smaller. Moreover, even a slight gap {between} the magnet’s surface and the plate decreases the holding force.
Safety rules for work with NdFeB magnets
Impact on smartphones
A powerful magnetic field interferes with the functioning of compasses in phones and navigation systems. Keep magnets close to a device to avoid breaking the sensors.
This is not a toy
These products are not intended for children. Eating a few magnets can lead to them connecting inside the digestive tract, which poses a direct threat to life and requires immediate surgery.
Fire risk
Mechanical processing of NdFeB material carries a risk of fire risk. Magnetic powder reacts violently with oxygen and is difficult to extinguish.
Warning for allergy sufferers
Certain individuals experience a contact allergy to Ni, which is the common plating for NdFeB magnets. Frequent touching may cause a rash. We strongly advise use protective gloves.
Threat to electronics
Avoid bringing magnets near a purse, laptop, or TV. The magnetism can permanently damage these devices and erase data from cards.
Do not underestimate power
Before use, check safety instructions. Sudden snapping can break the magnet or injure your hand. Be predictive.
Fragile material
Despite the nickel coating, neodymium is brittle and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.
Bone fractures
Risk of injury: The pulling power is so immense that it can cause hematomas, pinching, and even bone fractures. Protective gloves are recommended.
Demagnetization risk
Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Implant safety
Individuals with a heart stimulator have to maintain an absolute distance from magnets. The magnetic field can disrupt the operation of the life-saving device.
Caution!
Looking for details? Read our article: Why are neodymium magnets dangerous?
