tel: +48 888 99 98 98

Neodymium magnets – strongest on the market

Want to buy really powerful magnets? We offer wide selection of disc, cylindrical and ring magnets. Perfect for for domestic applications, workshop and model making. Browse assortment with fast shipping.

discover price list and dimensions

Grips for seabed exploration

Discover your passion related to seabed exploration! Our specialized grips (F200, F400) provide safety guarantee and huge lifting capacity. Stainless steel construction and strong lines will perform in rivers and lakes.

choose your set

Industrial magnetic grips industrial

Proven solutions for mounting without drilling. Threaded mounts (external or internal) provide instant organization of work on production halls. Perfect for mounting lighting, sensors and banners.

see available threads

🚀 Lightning processing: orders by 14:00 shipped within 24h!

Dhit sp. z o.o.
Product available Ships today (order by 14:00)

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

magnetic holder internal thread

Catalog no 180319

GTIN/EAN: 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 with VAT / pcs + price for transport

19.50 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
19.50 ZŁ
23.99 ZŁ
price from 20 pcs
18.33 ZŁ
22.55 ZŁ
price from 80 pcs
17.16 ZŁ
21.11 ZŁ
Want to negotiate?

Pick up the phone and ask +48 22 499 98 98 otherwise get in touch using our online form through our site.
Parameters and appearance of magnetic components can be analyzed on our modular calculator.

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

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/EAN 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 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

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
Technical specification and ecology
Material specification
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%
Sustainability
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: 180319-2025
Measurement Calculator
Force (pull)

Magnetic Field

Other products

The steel cup acts as an armature, concentrating the magnetic flux and increasing capacity even several times. Thanks to this, the holder is more durable, resistant, and safer to mount. The bushing with internal thread allows easy screwing of any element (bolt, hook, handle).
The most important rule is choosing the appropriate length of the screw being screwed in. 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 serve as a base for hooks, cable holders, organizers, and lighting systems. 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. 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. 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 as well as weaknesses of Nd2Fe14B magnets.

Advantages
In addition to their long-term stability, neodymium magnets provide the following advantages:
  • Their magnetic field remains stable, and after around ten years it decreases only by ~1% (theoretically),
  • Neodymium magnets are characterized by highly resistant to demagnetization caused by magnetic disturbances,
  • The use of an metallic layer of noble metals (nickel, gold, silver) causes the element to be more visually attractive,
  • Neodymium magnets ensure maximum magnetic induction on a small surface, which ensures high operational effectiveness,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and are able to act (depending on the shape) even at a temperature of 230°C or more...
  • Possibility of custom forming and adapting to complex requirements,
  • Wide application in innovative solutions – they find application in HDD drives, motor assemblies, diagnostic systems, also technologically advanced constructions.
  • Thanks to concentrated force, small magnets offer high operating force, with minimal size,
Cons
Problematic aspects of neodymium magnets: application proposals
  • Brittleness is one of their disadvantages. Upon intense impact they can break. We recommend keeping them in a strong case, which not only protects them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their power at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • They rust in a humid environment - during use outdoors we suggest using waterproof magnets e.g. in rubber, plastic
  • We recommend cover - magnetic mechanism, due to difficulties in producing nuts inside the magnet and complicated forms.
  • Possible danger to health – tiny shards of magnets pose a threat, in case of ingestion, which becomes key in the context of child safety. Furthermore, tiny parts of these magnets can disrupt the diagnostic process medical in case of swallowing.
  • Due to expensive raw materials, their price is higher than average,

Lifting parameters

Maximum lifting force for a neodymium magnet – what it depends on?
Information about lifting capacity is the result of a measurement for ideal contact conditions, taking into account:
  • with the contact of a yoke made of low-carbon steel, ensuring maximum field concentration
  • whose transverse dimension reaches at least 10 mm
  • with an polished touching surface
  • under conditions of ideal adhesion (surface-to-surface)
  • under perpendicular force vector (90-degree angle)
  • in neutral thermal conditions
Lifting capacity in practice – influencing factors
Real force is influenced by specific conditions, such as (from most important):
  • Space between magnet and steel – even a fraction of a millimeter of separation (caused e.g. by varnish or dirt) drastically reduces the pulling force, often by half at just 0.5 mm.
  • Load vector – maximum parameter is reached only during pulling at a 90° angle. The shear force of the magnet along the surface is standardly several times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – to utilize 100% power, the steel must be adequately massive. Paper-thin metal limits the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. Alloy additives worsen the attraction effect.
  • Surface finish – full contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Thermal conditions – neodymium magnets have a negative temperature coefficient. When it is hot they lose power, and in frost gain strength (up to a certain limit).

Holding force was checked on a smooth steel plate of 20 mm thickness, when a perpendicular force was applied, whereas under parallel forces 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 decreases the load capacity.

Precautions when working with neodymium magnets
Avoid contact if allergic

Some people have a sensitization to nickel, which is the common plating for NdFeB magnets. Frequent touching might lead to dermatitis. We strongly advise use safety gloves.

Fire warning

Powder produced during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.

Magnets are brittle

NdFeB magnets are sintered ceramics, meaning they are very brittle. Collision of two magnets will cause them shattering into shards.

Data carriers

Intense magnetic fields can erase data on credit cards, hard drives, and other magnetic media. Stay away of at least 10 cm.

Handling guide

Before use, check safety instructions. Uncontrolled attraction can break the magnet or hurt your hand. Think ahead.

Power loss in heat

Standard neodymium magnets (N-type) undergo demagnetization when the temperature surpasses 80°C. Damage is permanent.

Bone fractures

Mind your fingers. Two powerful magnets will join instantly with a force of massive weight, crushing anything in their path. Be careful!

Pacemakers

Medical warning: Neodymium magnets can turn off pacemakers and defibrillators. Stay away if you have medical devices.

Compass and GPS

Note: rare earth magnets generate a field that disrupts precision electronics. Keep a separation from your mobile, device, and GPS.

Choking Hazard

Always store magnets away from children. Choking hazard is high, and the consequences of magnets connecting inside the body are life-threatening.

Danger! Learn more about risks in the article: Magnet Safety Guide.
Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98