UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

Product available Ships today (order by 14:00)

UMGW 36x18x8 [M8] 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 180319

GTIN: 5906301813750

5.00

Diameter Ø

36 mm [±1 mm]

Height

18 mm [±1 mm]

Height

8 mm [±1 mm]

Weight

52 g

Load capacity

40.00 kg / 392.27 N

23.99 ZŁ with VAT / pcs + price for transport

19.50 ZŁ net + 23% VAT / pcs

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Weight as well as structure of neodymium magnets can be tested on our power calculator.

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UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

Specification / characteristics UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

properties

properties	values
Cat. no.	180319
GTIN	5906301813750
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	36 mm [±1 mm]
Height	18 mm [±1 mm]
Height	8 mm [±1 mm]
Weight	52 g
Load capacity ~ ?	40.00 kg / 392.27 N
Manufacturing Tolerance	±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 36x18x8 [M8] 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

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Induction (Gs)

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A magnetic holder (magnet in a steel cup) is much stronger on one side than a bare magnet of the same dimensions. 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).

Too long a screw can pass through the bushing and push out or damage the magnet glued into the bottom of the cup. Neodymium magnets are brittle, and direct pressure from a screw can cause them to crack or detach. You can use a spacer washer or lock nut to limit screwing depth.

They are used for fixing sensors, lamps, rating plates, machine guards, and installations. 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.

This value applies to perfect adherence with the entire magnet surface. Air gap (rust, paint, dirt) also drastically lowers holding power. We always recommend choosing a magnet with power reserve, especially if the surface is not ideal.

Standard coating effectively protects against moisture in indoor conditions. In rain and frost, the coating may degrade over time if not protected. The whole is well protected for standard workshop and industrial applications.

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.

Strengths

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

They retain magnetic properties for almost ten years – the loss is just ~1% (based on simulations),
They have excellent resistance to magnetism drop when exposed to external fields,
In other words, due to the shiny surface of nickel, the element gains a professional look,
Magnetic induction on the working part of the magnet turns out to be strong,
Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can work (depending on the form) even at a temperature of 230°C or more...
Possibility of exact forming and adapting to individual conditions,
Versatile presence in innovative solutions – they serve a role in computer drives, electric motors, precision medical tools, and complex engineering applications.
Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which allows their use in miniature devices

Cons

Drawbacks and weaknesses of neodymium magnets and ways of using them

They are prone to damage upon heavy impacts. To avoid cracks, it is worth securing magnets in special housings. Such protection not only shields the magnet but also increases its resistance to damage
When exposed to high temperature, neodymium magnets suffer a drop in force. 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
They oxidize in a humid environment. For use outdoors we recommend using waterproof magnets e.g. in rubber, plastic
Due to limitations in realizing threads and complex forms in magnets, we propose using a housing - magnetic holder.
Potential hazard resulting from small fragments of magnets can be dangerous, when accidentally swallowed, which becomes key in the context of child health protection. Additionally, small components of these devices are able to disrupt the diagnostic process medical in case of swallowing.
Due to neodymium price, their price is higher than average,

Pull force analysis

Best holding force of the magnet in ideal parameters – what contributes to it?

Holding force of 40.00 kg is a theoretical maximum value performed under specific, ideal conditions:

using a base made of low-carbon steel, acting as a circuit closing element
possessing a thickness of at least 10 mm to avoid saturation
with an polished touching surface
without the slightest clearance between the magnet and steel
during detachment in a direction perpendicular to the mounting surface
in neutral thermal conditions

Key elements affecting lifting force

In real-world applications, the actual lifting capacity depends on a number of factors, presented from most significant:

Clearance – the presence of any layer (rust, tape, gap) interrupts the magnetic circuit, which reduces power steeply (even by 50% at 0.5 mm).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the capacity drops drastically, often to levels of 20-30% of the maximum value.
Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the attraction force (the magnet "punches through" it).
Steel type – mild steel attracts best. Alloy steels lower magnetic permeability and lifting capacity.
Smoothness – full contact is obtained only on polished steel. Rough texture reduce the real contact area, weakening the magnet.
Operating temperature – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and at low temperatures gain strength (up to a certain limit).

Lifting capacity was determined using a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under shearing force the holding force is lower. Additionally, even a minimal clearance between the magnet and the plate reduces the load capacity.

Safe handling of neodymium magnets

Material brittleness

Protect your eyes. Magnets can explode upon uncontrolled impact, ejecting sharp fragments into the air. Eye protection is mandatory.

Avoid contact if allergic

Warning for allergy sufferers: The Ni-Cu-Ni coating contains nickel. If skin irritation occurs, cease working with magnets and wear gloves.

Pacemakers

People with a pacemaker should keep an large gap from magnets. The magnetism can interfere with the functioning of the life-saving device.

Electronic devices

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

Machining danger

Dust produced during grinding of magnets is combustible. Do not drill into magnets without proper cooling and knowledge.

This is not a toy

Product intended for adults. Tiny parts can be swallowed, causing severe trauma. Store away from children and animals.

Bone fractures

Big blocks can crush fingers in a fraction of a second. Never put your hand between two strong magnets.

Power loss in heat

Avoid heat. Neodymium magnets are sensitive to heat. If you require operation above 80°C, look for special high-temperature series (H, SH, UH).

GPS and phone interference

A powerful magnetic field disrupts the operation of magnetometers in phones and GPS navigation. Keep magnets close to a device to avoid damaging the sensors.

Conscious usage

Use magnets with awareness. Their huge power can surprise even professionals. Plan your moves and respect their force.

Safety First! Looking for details? Check our post: Are neodymium magnets dangerous?

UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

Not sure about your choice?

UMGW 36x18x8 [M8] GW / N38 - magnetic holder internal thread

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Force (Pull)

Magnetic Induction

Other products

SM 25x400 [2xM8] / N52 - magnetic separator

UMGGW 22x6 [M4] GW / N38 - magnetic holder rubber internal thread

BM 380x180x70 [4x M8] - magnetic beam

MW 14.9x10 / N38 - cylindrical magnet

Advantages as well as disadvantages of Nd2Fe14B magnets.

Strengths

Cons

Pull force analysis

Best holding force of the magnet in ideal parameters – what contributes to it?

Key elements affecting lifting force

Material brittleness

Avoid contact if allergic

Pacemakers

Electronic devices

Machining danger

This is not a toy

Bone fractures

Power loss in heat

GPS and phone interference

Conscious usage

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C

Advantages as well as disadvantages of Nd₂Fe₁₄B magnets.