UMGGW 88x8.5 [M6] GW / N38 - magnetic holder rubber internal thread
magnetic holder rubber internal thread
Catalog no 160309
GTIN: 5906301813675
Diameter Ø [±0,1 mm]
88 mm
Height [±0,1 mm]
8.5 mm
Weight
186 g
Load capacity
42.9 kg / 420.71 N
40.59 ZŁ with VAT / pcs + price for transport
33.00 ZŁ net + 23% VAT / pcs
bulk discounts:
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Magnetic properties of material N38
Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C
Shopping tips
Pros and cons of rare earth magnets.
Besides their magnetic performance, neodymium magnets are valued for these benefits:
- They do not lose strength, even during around ten years – the drop in lifting capacity is only ~1% (based on measurements),
- Magnets perfectly protect themselves against demagnetization caused by ambient magnetic noise,
- By using a decorative layer of silver, the element gains an aesthetic look,
- They show high magnetic induction at the operating surface, which improves attraction properties,
- Thanks to resistance to high temperature, they can operate (depending on the shape) even at temperatures up to 230°C and higher...
- Thanks to freedom in designing and the capacity to customize to unusual requirements,
- Versatile presence in advanced technology sectors – they are commonly used in mass storage devices, electric motors, medical equipment, as well as industrial machines.
- Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,
Disadvantages of neodymium magnets:
- To avoid cracks under impact, we suggest using special steel holders. Such a solution protects the magnet and simultaneously increases its durability.
- We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we advise our specialized [AH] magnets, which work effectively even at 230°C.
- Magnets exposed to a humid environment can rust. Therefore during using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
- Limited ability of creating nuts in the magnet and complex forms - recommended is a housing - magnet mounting.
- Health risk to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child safety. Additionally, small elements of these devices are able to disrupt the diagnostic process medical after entering the body.
- Higher cost of purchase is a significant factor to consider compared to ceramic magnets, especially in budget applications
Maximum lifting capacity of the magnet – what it depends on?
The force parameter is a measurement result conducted under specific, ideal conditions:
- with the application of a sheet made of low-carbon steel, guaranteeing full magnetic saturation
- whose transverse dimension equals approx. 10 mm
- with an polished contact surface
- without any insulating layer between the magnet and steel
- during pulling in a direction perpendicular to the plane
- in temp. approx. 20°C
Practical lifting capacity: influencing factors
In practice, the real power depends on many variables, ranked from most significant:
- Clearance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
- Force direction – remember that the magnet has greatest strength perpendicularly. Under sliding down, the holding force drops drastically, often to levels of 20-30% of the nominal value.
- Wall thickness – thin material does not allow full use of the magnet. Magnetic flux penetrates through instead of converting into lifting capacity.
- Material type – the best choice is pure iron steel. Hardened steels may have worse magnetic properties.
- Surface finish – ideal contact is obtained only on smooth steel. Any scratches and bumps create air cushions, reducing force.
- Temperature influence – hot environment weakens pulling force. Too high temperature can permanently demagnetize the magnet.
* Lifting capacity testing was performed on a smooth plate of optimal thickness, under a perpendicular pulling force, in contrast under parallel forces the load capacity is reduced by as much as fivefold. Moreover, even a small distance {between} the magnet and the plate decreases the load capacity.
Warnings
Threat to navigation
An intense magnetic field interferes with the functioning of magnetometers in phones and navigation systems. Do not bring magnets near a smartphone to prevent breaking the sensors.
Heat sensitivity
Avoid heat. Neodymium magnets are sensitive to heat. If you require resistance above 80°C, look for special high-temperature series (H, SH, UH).
Beware of splinters
Neodymium magnets are ceramic materials, meaning they are very brittle. Clashing of two magnets will cause them shattering into shards.
Health Danger
Patients with a heart stimulator have to maintain an large gap from magnets. The magnetism can interfere with the functioning of the life-saving device.
Immense force
Exercise caution. Rare earth magnets attract from a distance and connect with massive power, often faster than you can react.
Allergy Warning
Nickel alert: The nickel-copper-nickel coating consists of nickel. If skin irritation occurs, cease handling magnets and use protective gear.
Keep away from children
Only for adults. Small elements pose a choking risk, leading to serious injuries. Keep out of reach of kids and pets.
Cards and drives
Very strong magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Keep a distance of at least 10 cm.
Combustion hazard
Fire hazard: Rare earth powder is explosive. Avoid machining magnets in home conditions as this risks ignition.
Serious injuries
Danger of trauma: The pulling power is so immense that it can cause blood blisters, crushing, and broken bones. Protective gloves are recommended.
Attention!
Learn more about hazards in the article: Magnet Safety Guide.
