UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

Product available Ships today (order by 14:00)

UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: 1-6500
Rating: 5

magnetic holder internal thread

Catalog no 180318

GTIN/EAN: 5906301813743

5.00

Diameter Ø

32 mm [±1 mm]

Height

18 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

42 g

Load capacity

34.00 kg / 333.43 N

15.22 ZŁ with VAT / pcs + price for transport

12.37 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

Specification / characteristics UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

properties

properties	values
Cat. no.	180318
GTIN/EAN	5906301813743
Production/Distribution	Dhit sp. z o.o. ul. Zielona 14 05-850 Ożarów Mazowiecki PL
Country of origin	Poland / China / Germany
Customs code	85059029
Diameter Ø	32 mm [±1 mm]
Height	18 mm [±1 mm]
Height	8 mm [±1 mm]
Weight	42 g
Load capacity ~ ?	34.00 kg / 333.43 N
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

properties	values	units
remenance Br [Min. - Max.] ?	12.2-12.6	kGs
remenance Br [Min. - Max.] ?	1220-1260	T
coercivity bHc ?	10.8-11.5	kOe
coercivity bHc ?	860-915	kA/m
actual internal force iHc	≥ 12	kOe
actual internal force iHc	≥ 955	kA/m
energy density [Min. - Max.] ?	36-38	BH max MGOe
energy density [Min. - Max.] ?	287-303	BH max KJ/m
max. temperature ?	≤ 80	°C

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

properties	values	units
Vickers hardness	≥550	Hv
Density	≥7.4	g/cm³
Curie Temperature TC	312 - 380	°C
Curie Temperature TF	593 - 716	°F
Specific resistance	150	μΩ⋅Cm
Bending strength	250	Mpa
Compressive strength	1000~1100	Mpa
Thermal expansion parallel (∥) to orientation (M)	(3-4) x 106	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10-6	°C^-1
Young's modulus	1.7 x 104	kg/mm²

Technical and environmental data

Elemental analysis

iron (Fe)	64% – 68%
neodymium (Nd)	29% – 32%
boron (B)	1.1% – 1.2%
dysprosium (Dy)	0.5% – 2.0%
coating (Ni-Cu-Ni)	< 0.05%

Environmental data

recyclability (EoL)	100%
recycled raw materials	~10% (pre-cons)
carbon footprint	low / zredukowany
waste code (EWC)	16 02 16

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e-mail: kontakt@dhit.pl

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The steel cup acts as an armature, concentrating the magnetic flux and increasing capacity even several times. Moreover, the metal housing protects the brittle neodymium magnet from cracking upon impact. The bushing with internal thread allows easy screwing of any element (bolt, hook, handle).

Care must be taken not to screw the bolt too deep into the magnet bushing. Neodymium magnets are brittle, and direct pressure from a screw can cause them to crack or detach. It is worth securing the thread with thread glue if the connection is to be durable and resistant to vibrations.

These holders are commonly used in industry, advertising, and construction for quick mounting. They allow mounting without drilling in steel substrate, which is crucial in rented spaces. In the workshop, they can serve as mounting points for tools or measuring instruments.

The stated force is the maximum laboratory value obtained on a clean, smooth sheet. With thin sheets (e.g., car body, fridge casing), the force will be much smaller because steel cannot absorb the entire magnetic field. We always recommend choosing a magnet with power reserve, especially if the surface is not ideal.

Steel cups are usually coated with a layer of nickel (shiny) or zinc (matte/bright), providing basic protection. For outdoor applications, we recommend additional protection with varnish or choosing a rubberized (hermetic) version. The whole is well protected for standard workshop and industrial applications.

Strengths and weaknesses of neodymium magnets.

Advantages

Besides their magnetic performance, neodymium magnets are valued for these benefits:

They do not lose power, even over approximately ten years – the reduction in lifting capacity is only ~1% (according to tests),
They do not lose their magnetic properties even under strong external field,
Thanks to the reflective finish, the coating of nickel, gold, or silver gives an visually attractive appearance,
Magnets are characterized by exceptionally strong magnetic induction on the outer layer,
Through (appropriate) combination of ingredients, they can achieve high thermal strength, enabling operation at temperatures approaching 230°C and above...
Possibility of exact machining as well as adjusting to atypical requirements,
Fundamental importance in innovative solutions – they serve a role in data components, motor assemblies, advanced medical instruments, and other advanced devices.
Compactness – despite small sizes they offer powerful magnetic field, making them ideal for precision applications

Disadvantages

Characteristics of disadvantages of neodymium magnets: weaknesses and usage proposals

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
NdFeB magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent drop of power (a factor is the shape as well as dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are extremely resistant to heat
When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which secure oxidation and corrosion.
Due to limitations in realizing nuts and complex shapes in magnets, we recommend using casing - magnetic holder.
Potential hazard to health – tiny shards of magnets can be dangerous, when accidentally swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
High unit price – neodymium magnets are more expensive than other types of magnets (e.g. ferrite), which can limit application in large quantities

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

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

with the contact of a yoke made of low-carbon steel, ensuring full magnetic saturation
whose transverse dimension equals approx. 10 mm
characterized by lack of roughness
without any clearance between the magnet and steel
for force acting at a right angle (in the magnet axis)
at ambient temperature room level

Key elements affecting lifting force

During everyday use, the real power is determined by several key aspects, listed from most significant:

Air gap (between the magnet and the metal), as even a microscopic distance (e.g. 0.5 mm) leads to a drastic drop in force by up to 50% (this also applies to paint, rust or dirt).
Loading method – catalog parameter refers to detachment vertically. When applying parallel force, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
Base massiveness – insufficiently thick plate does not accept the full field, causing part of the power to be wasted to the other side.
Plate material – mild steel gives the best results. Alloy steels decrease magnetic permeability and lifting capacity.
Surface structure – the smoother and more polished the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Thermal factor – hot environment weakens magnetic field. Too high temperature can permanently damage the magnet.

Lifting capacity testing was conducted on a smooth plate of optimal thickness, under perpendicular forces, in contrast under shearing force the load capacity is reduced by as much as 5 times. In addition, even a slight gap between the magnet’s surface and the plate reduces the lifting capacity.

Warnings

Avoid contact if allergic

A percentage of the population have a sensitization to nickel, which is the typical protective layer for NdFeB magnets. Extended handling might lead to skin redness. We recommend wear safety gloves.

Beware of splinters

Despite metallic appearance, the material is delicate and cannot withstand shocks. Do not hit, as the magnet may shatter into hazardous fragments.

Medical interference

Life threat: Strong magnets can deactivate heart devices and defibrillators. Stay away if you have medical devices.

Do not give to children

Always store magnets away from children. Risk of swallowing is high, and the consequences of magnets clamping inside the body are life-threatening.

Safe distance

Equipment safety: Neodymium magnets can damage data carriers and delicate electronics (heart implants, medical aids, timepieces).

Bodily injuries

Watch your fingers. Two powerful magnets will join instantly with a force of several hundred kilograms, destroying anything in their path. Be careful!

Power loss in heat

Regular neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. This process is irreversible.

Impact on smartphones

GPS units and mobile phones are extremely sensitive to magnetism. Close proximity with a powerful NdFeB magnet can decalibrate the sensors in your phone.

Powerful field

Before use, check safety instructions. Uncontrolled attraction can destroy the magnet or hurt your hand. Be predictive.

Machining danger

Combustion risk: Neodymium dust is explosive. Avoid machining magnets without safety gear as this may cause fire.

Warning! Learn more about hazards in the article: Magnet Safety Guide.

UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

Need advice?

UMGW 32x18x8 [M6] GW / N38 - magnetic holder internal thread

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Magnet Pull Force

Magnetic Induction

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UMGZ 36x18x8 [M6] GZ / N38 - magnetic holder external thread

Strengths and weaknesses of neodymium magnets.

Advantages

Disadvantages

Pull force analysis

Maximum lifting capacity of the magnet – what it depends on?

Key elements affecting lifting force

Avoid contact if allergic

Beware of splinters

Medical interference

Do not give to children

Safe distance

Bodily injuries

Power loss in heat

Impact on smartphones

Powerful field

Machining danger

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C