UMGB 75x28 [M10x3] GW F200 PLATINIUM + Lina GOBLIN / N52 - goblin magnetic holder

Advantages as well as disadvantages of NdFeB magnets.

Besides their remarkable magnetic power, neodymium magnets offer the following advantages:

• Their strength remains stable, and after approximately 10 years it drops only by ~1% (theoretically),
• Neodymium magnets remain exceptionally resistant to magnetic field loss caused by external magnetic fields,
• A magnet with a shiny nickel surface looks better,
• Neodymium magnets ensure maximum magnetic induction on a small area, which increases force concentration,
• Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their shape) at temperatures up to 230°C and above...
• Considering the ability of precise molding and customization to custom needs, neodymium magnets can be modeled in a wide range of geometric configurations, which expands the range of possible applications,
• Fundamental importance in future technologies – they find application in computer drives, motor assemblies, medical equipment, and modern systems.
• Thanks to concentrated force, small magnets offer high operating force, in miniature format,

Disadvantages of NdFeB magnets:

• They are fragile upon heavy impacts. To avoid cracks, it is worth protecting magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
• We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we suggest our specialized [AH] magnets, which work effectively even at 230°C.
• They oxidize in a humid environment - during use outdoors we advise using waterproof magnets e.g. in rubber, plastic
• Due to limitations in producing nuts and complicated shapes in magnets, we propose using casing - magnetic mechanism.
• Health risk resulting from small fragments of magnets pose a threat, when accidentally swallowed, which becomes key in the context of child safety. It is also worth noting that small elements of these magnets are able to disrupt the diagnostic process medical in case of swallowing.
• Due to complex production process, their price is higher than average,

Magnetic strength at its maximum – what affects it?

The lifting capacity listed is a measurement result conducted under specific, ideal conditions:

• with the use of a sheet made of special test steel, guaranteeing full magnetic saturation
• with a cross-section no less than 10 mm
• with an ideally smooth contact surface
• with total lack of distance (no impurities)
• for force applied at a right angle (in the magnet axis)
• at ambient temperature room level

Practical lifting capacity: influencing factors

Effective lifting capacity is affected by specific conditions, including (from priority):

• Clearance – the presence of foreign body (paint, tape, gap) acts as an insulator, which lowers capacity steeply (even by 50% at 0.5 mm).
• Direction of force – maximum parameter is available only during perpendicular pulling. The force required to slide of the magnet along the surface is typically several times lower (approx. 1/5 of the lifting capacity).
• Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the attraction force (the magnet "punches through" it).
• Steel grade – the best choice is pure iron steel. Cast iron may attract less.
• Smoothness – full contact is possible only on polished steel. Rough texture create air cushions, reducing force.
• Temperature – heating the magnet results in weakening of force. Check the maximum operating temperature for a given model.

* Holding force was tested on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the load capacity is reduced by as much as fivefold. Moreover, even a minimal clearance {between} the magnet’s surface and the plate decreases the load capacity.