SMZR 25x200 / N52 - magnetic separator with handle
magnetic separator with handle
Catalog no 140444
GTIN: 5906301813507
Diameter Ø [±0,1 mm]
25 mm
Height [±0,1 mm]
200 mm
Weight
0.01 g
553.50 ZŁ with VAT / pcs + price for transport
450.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material N52
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Advantages and disadvantages of NdFeB magnets.
In addition to their pulling strength, neodymium magnets provide the following advantages:
- Their power is maintained, and after approximately ten years it drops only by ~1% (theoretically),
- They have excellent resistance to weakening of magnetic properties due to external fields,
- Thanks to the shimmering finish, the layer of Ni-Cu-Ni, gold, or silver-plated gives an clean appearance,
- Neodymium magnets generate maximum magnetic induction on a their surface, which ensures high operational effectiveness,
- Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for action at temperatures reaching 230°C and above...
- Thanks to the option of accurate shaping and customization to specialized needs, neodymium magnets can be modeled in a wide range of forms and dimensions, which increases their versatility,
- Wide application in modern industrial fields – they serve a role in HDD drives, electromotive mechanisms, diagnostic systems, as well as other advanced devices.
- Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications
Disadvantages of NdFeB magnets:
- To avoid cracks under impact, we suggest using special steel holders. Such a solution secures the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can lose their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
- When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
- Limited ability of producing threads in the magnet and complicated shapes - recommended is cover - magnet mounting.
- Health risk to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small elements of these magnets can be problematic in diagnostics medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Best holding force of the magnet in ideal parameters – what affects it?
Magnet power was defined for ideal contact conditions, including:
- on a plate made of structural steel, optimally conducting the magnetic field
- with a thickness minimum 10 mm
- with a plane cleaned and smooth
- without the slightest clearance between the magnet and steel
- under axial force vector (90-degree angle)
- at standard ambient temperature
Practical lifting capacity: influencing factors
In practice, the actual lifting capacity depends on many variables, presented from crucial:
- Distance (between the magnet and the metal), as even a microscopic clearance (e.g. 0.5 mm) results in a decrease in lifting capacity by up to 50% (this also applies to varnish, corrosion or debris).
- Direction of force – maximum parameter is reached only during perpendicular pulling. The resistance to sliding of the magnet along the plate is standardly many times smaller (approx. 1/5 of the lifting capacity).
- Metal thickness – thin material does not allow full use of the magnet. Part of the magnetic field penetrates through instead of converting into lifting capacity.
- Steel type – mild steel attracts best. Alloy admixtures lower magnetic properties and lifting capacity.
- Surface finish – full contact is possible only on polished steel. Rough texture create air cushions, weakening the magnet.
- Thermal conditions – neodymium magnets have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
* Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, however under shearing force the holding force is lower. In addition, even a small distance {between} the magnet and the plate decreases the lifting capacity.
Safety rules for work with NdFeB magnets
Heat sensitivity
Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.
Respect the power
Exercise caution. Neodymium magnets attract from a long distance and snap with massive power, often quicker than you can react.
Flammability
Fire warning: Neodymium dust is highly flammable. Avoid machining magnets in home conditions as this may cause fire.
ICD Warning
Patients with a pacemaker must keep an absolute distance from magnets. The magnetic field can interfere with the operation of the implant.
Cards and drives
Avoid bringing magnets near a wallet, computer, or screen. The magnetic field can permanently damage these devices and wipe information from cards.
Protective goggles
Despite the nickel coating, neodymium is delicate and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.
Magnetic interference
A powerful magnetic field negatively affects the operation of compasses in phones and navigation systems. Do not bring magnets close to a smartphone to prevent damaging the sensors.
Product not for children
Absolutely store magnets away from children. Ingestion danger is significant, and the effects of magnets clamping inside the body are very dangerous.
Serious injuries
Large magnets can break fingers in a fraction of a second. Under no circumstances put your hand betwixt two strong magnets.
Warning for allergy sufferers
Allergy Notice: The Ni-Cu-Ni coating contains nickel. If skin irritation appears, immediately stop working with magnets and use protective gear.
Attention!
Looking for details? Read our article: Are neodymium magnets dangerous?
