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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
Coating
[NiCuNi] Nickel
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189.42 zł with VAT / pcs + price for transport

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Technical - 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
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 75 mm [±1 mm]
Height 34 mm [±1 mm]
Height 18 mm [±1 mm]
Weight 475 g
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
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
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%

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: 190417-2026
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It is a ready-made mounting element that allows quick creation of a magnetic point. Thanks to this, you get a solid, magnetized mounting point without welding or gluing. They are commonly used in machine building, exhibition stands, lighting, and advertising.
The threaded stud is an integral part of the steel housing, but avoid overtightening the thread. We recommend using spring washers to avoid the need for forceful tightening. The construction is durable and adapted to industrial conditions.
Standard neodymium holders are adapted to work in temperatures up to 80°C. For furnaces, dryers, and powder coating shops, we recommend other types of magnets. Remember that even momentary overheating can weaken the holder.
We use standardized threads that fit typical nuts available in every store. Stud length varies depending on the model (usually from 8 to 15 mm). 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. However, such a system works point-wise and requires direct contact with metal.

Strengths and weaknesses of rare earth magnets.

Strengths

Besides their durability, neodymium magnets are valued for these benefits:
  • They retain magnetic properties for around ten years – the drop is just ~1% (in theory),
  • They do not lose their magnetic properties even under close interference source,
  • The use of an metallic coating of noble metals (nickel, gold, silver) causes the element to look better,
  • Magnets are distinguished by excellent magnetic induction on the surface,
  • Due to their durability and thermal resistance, neodymium magnets are capable of operate (depending on the shape) even at high temperatures reaching 230°C or more...
  • In view of the ability of precise forming and adaptation to individualized requirements, neodymium magnets can be produced in a broad palette of geometric configurations, which amplifies use scope,
  • Huge importance in modern technologies – they are utilized in hard drives, electromotive mechanisms, precision medical tools, also industrial machines.
  • Thanks to concentrated force, small magnets offer high operating force, occupying minimum space,

Weaknesses

Disadvantages of NdFeB magnets:
  • Susceptibility to cracking is one of their disadvantages. Upon strong impact they can break. We advise keeping them in a special holder, which not only secures them against impacts but also raises their durability
  • We warn that neodymium magnets can reduce their strength at high temperatures. To prevent this, we recommend our specialized [AH] magnets, which work effectively even at 230°C.
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as magnets in rubber or plastics, which prevent oxidation and corrosion.
  • Due to limitations in realizing threads and complex forms in magnets, we propose using casing - magnetic holder.
  • Potential hazard to health – tiny shards of magnets pose a threat, if swallowed, which gains importance in the context of child safety. Furthermore, small elements of these products 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

Pull force analysis

Highest magnetic holding force – what affects it?

The declared magnet strength concerns the limit force, measured under laboratory conditions, namely:
  • on a plate made of mild steel, perfectly concentrating the magnetic flux
  • possessing a massiveness of min. 10 mm to ensure full flux closure
  • characterized by lack of roughness
  • under conditions of ideal adhesion (metal-to-metal)
  • during detachment in a direction perpendicular to the mounting surface
  • at standard ambient temperature

Lifting capacity in practice – influencing factors

Real force is affected by working environment parameters, including (from most important):
  • Gap between magnet and steel – every millimeter of distance (caused e.g. by varnish or unevenness) diminishes the pulling force, often by half at just 0.5 mm.
  • Direction of force – maximum parameter is obtained only during pulling at a 90° angle. The resistance to sliding of the magnet along the plate is typically several times lower (approx. 1/5 of the lifting capacity).
  • Plate thickness – insufficiently thick plate does not close the flux, causing part of the flux to be escaped into the air.
  • Material composition – not every steel reacts the same. High carbon content weaken the interaction with the magnet.
  • Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps create air cushions, weakening the magnet.
  • Heat – neodymium magnets have a sensitivity to temperature. At higher temperatures they are weaker, and at low temperatures they can be stronger (up to a certain limit).

Holding force was measured on the plate surface of 20 mm thickness, when a perpendicular force was applied, in contrast under attempts to slide the magnet the holding force is lower. In addition, even a minimal clearance between the magnet’s surface and the plate decreases the holding force.

Precautions when working with NdFeB magnets
Maximum temperature

Control the heat. Heating the magnet to high heat will destroy its properties and strength.

Magnets are brittle

Protect your eyes. Magnets can fracture upon violent connection, launching sharp fragments into the air. Wear goggles.

Mechanical processing

Powder generated during cutting of magnets is combustible. Avoid drilling into magnets unless you are an expert.

This is not a toy

NdFeB magnets are not toys. Swallowing a few magnets can lead to them attracting across intestines, which poses a severe health hazard and requires immediate surgery.

Respect the power

Handle with care. Rare earth magnets act from a distance and snap with massive power, often quicker than you can react.

Hand protection

Danger of trauma: The attraction force is so immense that it can cause blood blisters, pinching, and even bone fractures. Use thick gloves.

Cards and drives

Data protection: Strong magnets can damage payment cards and sensitive devices (heart implants, hearing aids, mechanical watches).

Avoid contact if allergic

A percentage of the population suffer from a hypersensitivity to Ni, which is the common plating for NdFeB magnets. Extended handling can result in an allergic reaction. It is best to use safety gloves.

Phone sensors

Navigation devices and mobile phones are extremely sensitive to magnetism. Direct contact with a strong magnet can permanently damage the internal compass in your phone.

Danger to pacemakers

For implant holders: Powerful magnets affect electronics. Keep minimum 30 cm distance or request help to work with the magnets.

Warning! More info about hazards in the article: Magnet Safety Guide.