UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread

Pros as well as cons of rare earth magnets.

Besides their durability, neodymium magnets are valued for these benefits:

• They retain full power for almost ten years – the loss is just ~1% (based on simulations),
• They do not lose their magnetic properties even under close interference source,
• In other words, due to the smooth layer of nickel, the element gains a professional look,
• Neodymium magnets deliver maximum magnetic induction on a small area, which allows for strong attraction,
• Made from properly selected components, these magnets show impressive resistance to high heat, enabling them to function (depending on their form) at temperatures up to 230°C and above...
• Thanks to modularity in forming and the ability to adapt to unusual requirements,
• Wide application in innovative solutions – they are commonly used in data components, electric motors, advanced medical instruments, also multitasking production systems.
• Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Problematic aspects of neodymium magnets: tips and applications.

• They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only shields the magnet but also increases its resistance to damage
• Neodymium magnets lose their power 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 durability even at temperatures up to 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 creating threads and complicated shapes in magnets, we propose using cover - magnetic holder.
• Possible danger resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the aspect of protecting the youngest. It is also worth noting that small elements of these devices are able to be problematic in diagnostics medical in case of swallowing.
• High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which hinders application in large quantities

Maximum lifting capacity of the magnet – what affects it?

Information about lifting capacity was determined for ideal contact conditions, including:

• with the contact of a sheet made of special test steel, guaranteeing maximum field concentration
• possessing a massiveness of at least 10 mm to avoid saturation
• with a surface free of scratches
• with total lack of distance (without coatings)
• during detachment in a direction vertical to the mounting surface
• at standard ambient temperature

Lifting capacity in real conditions – factors

Bear in mind that the working load will differ subject to elements below, starting with the most relevant:

• Clearance – existence of any layer (paint, tape, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
• Pull-off angle – note that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
• Base massiveness – too thin sheet causes magnetic saturation, causing part of the power to be escaped to the other side.
• Steel grade – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
• Surface structure – the smoother and more polished the surface, the larger the contact zone and stronger the hold. Unevenness acts like micro-gaps.
• Thermal environment – temperature increase causes a temporary drop 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, whereas under parallel forces the lifting capacity is smaller. Additionally, even a slight gap {between} the magnet and the plate lowers the load capacity.