UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

Product available Ships today (order by 14:00)

UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external 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 external thread

Catalog no 190415

GTIN/EAN: 5906301813866

5.00

Diameter Ø

48 mm [±1 mm]

Height

24 mm [±1 mm]

Height

11.5 mm [±1 mm]

Weight

140 g

Load capacity

80.00 kg / 784.53 N

59.90 ZŁ with VAT / pcs + price for transport

48.70 ZŁ net + 23% VAT / pcs

bulk discounts:

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Call us +48 22 499 98 98 otherwise let us know through our online form the contact section.
Parameters as well as structure of magnets can be reviewed with our force calculator.

Orders placed before 14:00 will be shipped the same business day.

UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

Specification / characteristics UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

properties

properties	values
Cat. no.	190415
GTIN/EAN	5906301813866
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	48 mm [±1 mm]
Height	24 mm [±1 mm]
Height	11.5 mm [±1 mm]
Weight	140 g
Load capacity ~ ?	80.00 kg / 784.53 N
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

properties	values	units
remenance Br [min. - max.] ?	12.2-12.6	kGs
remenance Br [min. - max.] ?	1220-1260	mT
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 10^-6	°C^-1
Thermal expansion perpendicular (⊥) to orientation (M)	-(1-3) x 10^-6	°C^-1
Young's modulus	1.7 x 10⁴	kg/mm²

Engineering data and GPSR

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

Safety card (GPSR)

responsible entity

Dhit sp. z o.o.

ul. Kościuszki 6A, 05-850 Ożarów Mazowiecki

tel: +48 22 499 98 98 | e-mail: bok@dhit.pl

batch number/type

id: 190415-2025

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It is a ready-made mounting element that allows quick creation of a magnetic point. Mounting consists of inserting the screw into the hole and securing with a nut (e.g., wing nut). Used for mounting sensors, panels, plates, and exhibition elements.

Too strong tightening with a wrench can cause the stud to rotate in the cup or strip the thread. Do not use the magnet as a structural bolt transferring huge mechanical loads in shear. The magnet itself is protected by a steel cup and is very resistant to impact.

Maximum operating temperature is 80 degrees Celsius for the standard version. If you need resistance to higher temperatures, ask about special versions (H, SH). Avoid mounting directly on hot engine or machine components.

Thread size (e.g., M6) is always given in the product name and technical specification. Ensure thread length is sufficient to pass through the hole in your material and tighten the nut. It is a solid threaded connection, ready for use.

The magnetic system in a cup is more energy-efficient than the magnet itself of the same dimensions. This force drops very quickly with increasing distance (air gap).

Strengths and weaknesses of Nd₂Fe₁₄B magnets.

Strengths

Apart from their superior power, neodymium magnets have these key benefits:

They retain attractive force for around ten years – the loss is just ~1% (according to analyses),
They feature excellent resistance to magnetic field loss due to external fields,
A magnet with a smooth gold surface has an effective appearance,
Magnetic induction on the surface of the magnet turns out to be strong,
Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling action at temperatures approaching 230°C and above...
Thanks to the option of accurate molding and adaptation to individualized needs, NdFeB magnets can be manufactured in a wide range of forms and dimensions, which expands the range of possible applications,
Universal use in innovative solutions – they find application in data components, brushless drives, precision medical tools, also industrial machines.
Compactness – despite small sizes they provide effective action, making them ideal for precision applications

Weaknesses

Disadvantages of NdFeB magnets:

To avoid cracks under impact, we suggest using special steel housings. Such a solution protects the magnet and simultaneously increases its durability.
When exposed to high temperature, neodymium magnets suffer a drop in strength. Often, when the temperature exceeds 80°C, their strength decreases (depending on the size, as well as shape of the magnet). For those who need magnets for extreme conditions, we offer [AH] versions withstanding up to 230°C
Magnets exposed to a humid environment can rust. Therefore while using outdoors, we suggest using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in producing nuts and complex forms in magnets, we recommend using cover - magnetic holder.
Health risk related to microscopic parts of magnets are risky, in case of ingestion, which is particularly important in the aspect of protecting the youngest. Furthermore, tiny parts of these devices can be problematic in diagnostics medical when they are in the body.
Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Breakaway force is the result of a measurement for optimal configuration, taking into account:

using a plate made of low-carbon steel, functioning as a circuit closing element
possessing a massiveness of minimum 10 mm to avoid saturation
with a surface cleaned and smooth
under conditions of ideal adhesion (metal-to-metal)
for force acting at a right angle (pull-off, not shear)
in stable room temperature

Practical lifting capacity: influencing factors

Real force is affected by specific conditions, mainly (from most important):

Gap (betwixt the magnet and the plate), as even a very small clearance (e.g. 0.5 mm) can cause a reduction in lifting capacity by up to 50% (this also applies to varnish, corrosion or dirt).
Force direction – catalog parameter refers to pulling vertically. When applying parallel force, the magnet exhibits much less (often approx. 20-30% of maximum force).
Plate thickness – too thin steel does not close the flux, causing part of the power to be escaped to the other side.
Material composition – not every steel attracts identically. Alloy additives worsen the interaction with the magnet.
Base smoothness – the more even the surface, the better the adhesion and higher the lifting capacity. Roughness creates an air distance.
Temperature – heating the magnet causes a temporary drop of force. Check the maximum operating temperature for a given model.

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, in contrast under shearing force the holding force is lower. Additionally, even a slight gap between the magnet’s surface and the plate lowers the lifting capacity.

Safety rules for work with NdFeB magnets

Warning for heart patients

Individuals with a pacemaker must maintain an absolute distance from magnets. The magnetic field can stop the operation of the life-saving device.

Dust explosion hazard

Powder generated during grinding of magnets is self-igniting. Avoid drilling into magnets unless you are an expert.

Pinching danger

Protect your hands. Two large magnets will join immediately with a force of several hundred kilograms, destroying everything in their path. Exercise extreme caution!

Heat warning

Watch the temperature. Exposing the magnet above 80 degrees Celsius will ruin its magnetic structure and strength.

This is not a toy

NdFeB magnets are not toys. Accidental ingestion of several magnets may result in them attracting across intestines, which constitutes a direct threat to life and necessitates immediate surgery.

Caution required

Be careful. Rare earth magnets attract from a distance and snap with huge force, often faster than you can react.

Electronic devices

Equipment safety: Neodymium magnets can ruin data carriers and sensitive devices (heart implants, hearing aids, mechanical watches).

Compass and GPS

Remember: rare earth magnets produce a field that disrupts precision electronics. Maintain a separation from your phone, device, and navigation systems.

Allergic reactions

Studies show that the nickel plating (standard magnet coating) is a common allergen. If you have an allergy, prevent direct skin contact and choose coated magnets.

Magnet fragility

Neodymium magnets are sintered ceramics, meaning they are prone to chipping. Clashing of two magnets will cause them breaking into small pieces.

Safety First! Want to know more? Read our article: Why are neodymium magnets dangerous?

UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

Need advice?

UMGZ 48x24x11.5 [M8] GZ / N38 - magnetic holder external thread

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Elemental analysis

Environmental data

Pulling force

Field Strength

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MPL 30x10x5 / N38 - lamellar magnet

MW 10x8 / N38 - cylindrical magnet

MPL 25x15x2 / N38 - lamellar magnet

UMH 20x7x35 [M4] / N38 - magnetic holder with hook

Strengths and weaknesses of Nd2Fe14B magnets.

Strengths

Weaknesses

Holding force characteristics

Maximum holding power of the magnet – what it depends on?

Practical lifting capacity: influencing factors

Warning for heart patients

Dust explosion hazard

Pinching danger

Heat warning

This is not a toy

Caution required

Electronic devices

Compass and GPS

Allergic reactions

Magnet fragility

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Strengths and weaknesses of Nd₂Fe₁₄B magnets.