MW 14x10 / N38 - cylindrical magnet
cylindrical magnet
Catalog no 010391
GTIN: 5906301811084
Diameter Ø
14 mm [±0,1 mm]
Height
10 mm [±0,1 mm]
Weight
11.55 g
Magnetization Direction
↑ axial
Load capacity
7.74 kg / 75.9 N
Magnetic Induction
507.48 mT
Coating
[NiCuNi] nickel
6.84 ZŁ with VAT / pcs + price for transport
5.56 ZŁ net + 23% VAT / pcs
bulk discounts:
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Specifications as well as structure of neodymium magnets can be tested using our
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Strengths as well as weaknesses of NdFeB magnets.
Apart from their consistent holding force, neodymium magnets have these key benefits:
- They virtually do not lose strength, because even after ten years the performance loss is only ~1% (according to literature),
- Neodymium magnets remain highly resistant to demagnetization caused by external interference,
- Thanks to the metallic finish, the surface of nickel, gold-plated, or silver-plated gives an modern appearance,
- Neodymium magnets create maximum magnetic induction on a small surface, which ensures high operational effectiveness,
- Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
- Thanks to modularity in designing and the ability to customize to complex applications,
- Fundamental importance in electronics industry – they serve a role in data components, electromotive mechanisms, diagnostic systems, and multitasking production systems.
- Thanks to their power density, small magnets offer high operating force, occupying minimum space,
Disadvantages of neodymium magnets:
- They are prone to damage upon too strong impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only protects the magnet but also improves its resistance to damage
- We warn that neodymium magnets can reduce 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 start to rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
- Due to limitations in producing nuts and complicated shapes in magnets, we propose using a housing - magnetic mechanism.
- Potential hazard resulting from small fragments of magnets pose a threat, in case of ingestion, which gains importance in the context of child health protection. Additionally, tiny parts of these products can complicate diagnosis medical when they are in the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Maximum holding power of the magnet – what affects it?
Information about lifting capacity was defined for optimal configuration, including:
- using a plate made of mild steel, acting as a ideal flux conductor
- with a thickness of at least 10 mm
- characterized by even structure
- with direct contact (no impurities)
- for force applied at a right angle (in the magnet axis)
- in neutral thermal conditions
Lifting capacity in practice – influencing factors
Bear in mind that the application force may be lower influenced by the following factors, in order of importance:
- Space between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) diminishes the magnet efficiency, often by half at just 0.5 mm.
- Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Plate thickness – insufficiently thick steel does not accept the full field, causing part of the flux to be lost to the other side.
- Material type – the best choice is high-permeability steel. Cast iron may have worse magnetic properties.
- Base smoothness – the smoother and more polished the plate, the larger the contact zone and higher the lifting capacity. Roughness acts like micro-gaps.
- Thermal factor – high temperature reduces pulling force. Exceeding the limit temperature can permanently demagnetize the magnet.
* Lifting capacity testing was carried out on a smooth plate of suitable thickness, under a perpendicular pulling force, whereas under attempts to slide the magnet the holding force is lower. In addition, even a slight gap {between} the magnet and the plate reduces the load capacity.
H&S for magnets
Beware of splinters
Neodymium magnets are ceramic materials, meaning they are prone to chipping. Clashing of two magnets leads to them shattering into shards.
Phone sensors
An intense magnetic field negatively affects the operation of compasses in phones and GPS navigation. Maintain magnets near a smartphone to prevent breaking the sensors.
Safe distance
Intense magnetic fields can destroy records on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.
Heat sensitivity
Regular neodymium magnets (grade N) lose magnetization when the temperature goes above 80°C. This process is irreversible.
Warning for allergy sufferers
Some people experience a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Frequent touching can result in dermatitis. We strongly advise use safety gloves.
Warning for heart patients
For implant holders: Powerful magnets disrupt medical devices. Keep at least 30 cm distance or ask another person to work with the magnets.
Bone fractures
Risk of injury: The pulling power is so great that it can result in blood blisters, pinching, and even bone fractures. Protective gloves are recommended.
Conscious usage
Before use, read the rules. Sudden snapping can destroy the magnet or injure your hand. Be predictive.
Danger to the youngest
Always store magnets out of reach of children. Choking hazard is high, and the effects of magnets connecting inside the body are tragic.
Combustion hazard
Powder created during machining of magnets is flammable. Avoid drilling into magnets unless you are an expert.
Security!
More info about hazards in the article: Safety of working with magnets.
