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UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

magnetic holder external thread

Catalog no 190417

GTIN/EAN: 5906301813880

5.00
Load capacity 162.00 kg / 1588.68 N
Diameter Ø
75 mm [±1 mm]
Height
34 mm [±1 mm]
Height
18 mm [±1 mm]
Weight
475 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

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154.00 zł net / pcs

189.42 zł with VAT (23% VAT) / pcs

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154.00 zł
189.42 zł
price from 5 pcs
144.76 zł
178.05 zł
price from 10 pcs
135.52 zł
166.69 zł

Frequently asked questions

Which magnetic holder is suitable for moving metal parts in a workshop?
Choose a device designed for the intended handling task and check its rated conditions, attachment point and the steel being gripped. A basic permanent-magnet holder is not a certified device for lifting a load over people.
How do I choose a holder for hanging a heavy item and check its real grip?
Compare the catalogue pull rating with the actual steel thickness, surface condition, gap and load direction. Grip along a vertical surface differs from perpendicular pull. Add an independent mechanical safeguard where falling would cause harm.
Which magnetic holders can be used outdoors?
Check the coating, housing and permitted operating conditions on the individual product card. Rubber can help protect a painted surface, but do not assume that every holder is suitable for permanent immersion or salt spray.
How should I choose a strong threaded holder for field work?
Select an internal or external thread to match the part being attached. Then check the holder dimensions, pull rating, surface condition and moisture protection. Dirt and gaps can reduce practical grip.

Guides from the knowledge base

Want to talk magnets?

Call us now +48 888 99 98 98 alternatively let us know using contact form the contact section.
Specifications and structure of a neodymium magnet can be estimated using our power calculator.

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Physical properties - UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

Specification / characteristics - UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread

properties
properties values
Cat. no. 190417
GTIN/EAN 5906301813880
Distributor Dhit sp. z o.o.
Country of origin Poland / China / Germany
Customs code 85059029
Diameter Ø 75 mm [±1 mm]
Height 34 mm [±1 mm]
Height 18 mm [±1 mm]
Weight 475 g
Magnetization Direction ↑ axial
Load capacity ~ ? 162.00 kg / 1588.68 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGZ 75x34x18 [M10] GZ / N38 - magnetic holder external thread
properties values units
Remanence Br ? 12.2-12.6 kGs
Remanence Br ? 1220-1260 mT
Coercivity bHc ? 10.8-11.5 kOe
Coercivity bHc ? 860-915 kA/m
Intrinsic coercivity iHc ≥ 12 kOe
Intrinsic coercivity iHc ≥ 955 kA/m
Energy product BHmax ? 36-38 BH max MGOe
Energy product BHmax ? 287-303 BH max KJ/m
Maximum working 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 310 °C
Curie Temperature TF 590 °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 and environmental data

Chemical composition

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: 190417-2026
Magnet Unit Converter

Force (pull)

Field Strength

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This type of holder has a protruding threaded stud (screw), making it ideal for mounting in through holes. Mounting consists of inserting the screw into the hole and securing with a nut (e.g., wing nut). They are commonly used in machine building, exhibition stands, lighting, and advertising.
Too strong tightening with a wrench can cause the stud to rotate in the cup or strip the thread. We recommend using spring washers to avoid the need for forceful tightening. The magnet itself is protected by a steel cup and is very resistant to impact.
Standard neodymium holders are adapted to work in temperatures up to 80°C. If you need resistance to higher temperatures, ask about special versions (H, SH). Remember that even momentary overheating can weaken the holder.
Thread size (e.g., M6) is always given in the product name and technical specification. Exact screw dimensions can be found in the product technical table. The thread is made of galvanized steel, ensuring corrosion resistance.
Yes, the steel housing (cup) focuses the magnetic field, significantly increasing attraction force on the active side. However, such a system works point-wise and requires direct contact with metal.

Advantages and disadvantages of Nd2Fe14B magnets.

Strengths

In addition to their magnetic capacity, neodymium magnets provide the following advantages:
  • They do not lose power, even after around 10 years – the drop in lifting capacity is only ~1% (according to tests),
  • They feature excellent resistance to magnetism drop as a result of external fields,
  • By using a smooth coating of nickel, the element gains an elegant look,
  • Magnets possess maximum magnetic induction on the outer side,
  • Thanks to resistance to high temperature, they are capable of working (depending on the form) even at temperatures up to 230°C and higher...
  • Thanks to versatility in constructing and the capacity to adapt to unusual requirements,
  • Universal use in modern technologies – they are used in computer drives, brushless drives, diagnostic systems, also industrial machines.
  • Relatively small size with high pulling force – neodymium magnets offer strong magnetic field in compact dimensions, which makes them useful in compact constructions

Cons

Disadvantages of neodymium magnets:
  • To avoid cracks under impact, we suggest using special steel housings. Such a solution secures the magnet and simultaneously improves its durability.
  • Do not exceed this material temperature limit: 80°C. Overheating may permanently weaken the magnet.
  • Magnets exposed to a humid environment can corrode. Therefore when using outdoors, we recommend using waterproof magnets made of rubber, plastic or other material protecting against moisture
  • Due to limitations in realizing nuts and complicated forms in magnets, we recommend using cover - magnetic mount.
  • Potential hazard to health – tiny shards of magnets are risky, if swallowed, which becomes key in the aspect of protecting the youngest. Furthermore, tiny parts of these products can disrupt the diagnostic process medical after entering the body.
  • With large orders the cost of neodymium magnets can be a barrier,

Holding force characteristics

Maximum holding power of the magnet – what contributes to it?

The lifting capacity listed is a theoretical maximum value performed under the following configuration:
  • on a block made of structural steel, optimally conducting the magnetic field
  • with a cross-section minimum 10 mm
  • with an ground contact surface
  • without the slightest air gap between the magnet and steel
  • during detachment in a direction perpendicular to the mounting surface
  • at ambient temperature room level

What influences lifting capacity in practice

Real force is affected by specific conditions, including (from most important):
  • Space between surfaces – every millimeter of distance (caused e.g. by varnish or dirt) diminishes the magnet efficiency, often by half at just 0.5 mm.
  • Load vector – highest force is obtained only during pulling at a 90° angle. The shear force of the magnet along the plate is usually several times smaller (approx. 1/5 of the lifting capacity).
  • Substrate thickness – for full efficiency, the steel must be sufficiently thick. Paper-thin metal restricts the lifting capacity (the magnet "punches through" it).
  • Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
  • Surface quality – the more even the plate, the larger the contact zone and stronger the hold. Roughness acts like micro-gaps.
  • Temperature – heating the magnet causes a temporary drop of induction. It is worth remembering the thermal limit for a given model.

Lifting capacity was measured using a steel plate with a smooth surface of optimal thickness (min. 20 mm), under perpendicular detachment force, however under parallel forces the lifting capacity is smaller. In addition, even a slight gap between the magnet’s surface and the plate decreases the load capacity.

Precautions when working with neodymium magnets
Metal Allergy

Studies show that nickel (standard magnet coating) is a common allergen. If you have an allergy, avoid touching magnets with bare hands or choose coated magnets.

Adults only

Product intended for adults. Tiny parts pose a choking risk, leading to serious injuries. Keep away from kids and pets.

Fire risk

Powder created during machining of magnets is self-igniting. Avoid drilling into magnets without proper cooling and knowledge.

Hand protection

Pinching hazard: The pulling power is so great that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Implant safety

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

Thermal limits

Do not exceed the maximum operating temperature stated in the specifications of the particular product. The limit depends on the material, geometry and operating arrangement; there is no single threshold for all neodymium magnets. Overheating can permanently weaken a magnet.

Data carriers

Equipment safety: Strong magnets can damage data carriers and sensitive devices (pacemakers, medical aids, timepieces).

Threat to navigation

An intense magnetic field interferes with the operation of compasses in phones and navigation systems. Maintain magnets close to a device to avoid breaking the sensors.

Powerful field

Handle magnets with awareness. Their huge power can shock even experienced users. Plan your moves and do not underestimate their power.

Fragile material

NdFeB magnets are sintered ceramics, which means they are prone to chipping. Collision of two magnets will cause them cracking into shards.

Safety First! Want to know more? Check our post: Why are neodymium magnets dangerous?