Product on order Ships in 3-5 days CO2 GPSR PPWR REACH

UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread

magnetic holder internal thread

Catalog no 180418

GTIN/EAN: 5906301813774

5.00
Load capacity 80.00 kg / 784.53 N
Diameter Ø
48 mm [±1 mm]
Height
24 mm [±1 mm]
Height
11.5 mm [±1 mm]
Weight
140 g
Magnetization Direction
↑ axial
Coating
[NiCuNi] Nickel

How we measure these parameters — certificates and measurements

view parameters »

48.75 zł net / pcs

59.96 zł with VAT (23% VAT) / pcs

price for transport

bulk discounts:

Need more?
Quantity
Net
Gross
price from 1 pcs
48.75 zł
59.96 zł
price from 10 pcs
45.82 zł
56.36 zł
price from 40 pcs
42.90 zł
52.77 zł

Frequently asked questions

How much will a magnetic holder hold in practice?
The catalogue value assumes full contact with smooth steel at least 10 mm thick and a perpendicular pull. Thinner sheet, paint, rust and surface irregularities reduce it considerably: on 1 mm sheet about half remains. Lifting and vertical mounting call for an additional safety margin.
Will a holder work on stainless steel?
Not on austenitic grades 304 and 316 — they are effectively non-magnetic. It will not work on aluminium, copper or brass either. Those materials need a mechanical gripper.
Which coating for which conditions?
Nickel-copper-nickel (NiCuNi) is the standard and covers most applications. Epoxy is used for damp environments and outdoor work, zinc is sufficient for dry interiors. Holders in a steel housing or in rubber also protect the magnet against impact.

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.

Order by 14:00 and we’ll ship today!

Technical specification of the product - UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread

Specification / characteristics - UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal thread

properties
properties values
Cat. no. 180418
GTIN/EAN 5906301813774
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
Magnetization Direction ↑ axial
Load capacity ~ ? 80.00 kg / 784.53 N
Coating [NiCuNi] Nickel
Manufacturing Tolerance ±1 mm

Magnetic properties of material N38

Specification / characteristics UMGW 48x24x11.5 [M8] GW / N38 - magnetic holder internal 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

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: 180418-2026
Quick Unit Converter

Magnet pull force

Magnetic Field

Insert data into a field, and the rest change instantly.

Other deals

UMH 20x7x35 [M4] / N38 - magnetic holder with hook
Product on order Ships in 3-5 days

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

8.59 zł brutto / pcs
GM 100x38x13 / N52 - weapon holder
Product on order Ships in 3-5 days

GM 100x38x13 / N52 - weapon holder

65.50 zł brutto / pcs
MW 29x10 / N38 - cylindrical magnet
Product on order Ships in 3-5 days

MW 29x10 / N38 - cylindrical magnet

17.34 zł brutto / pcs
UMS 16x6.5x3.5x5 / N38 - conical magnetic holder
Product on order Ships in 3-5 days

UMS 16x6.5x3.5x5 / N38 - conical magnetic holder

4.48 zł brutto / pcs
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).
Care must be taken not to screw the bolt too deep into the magnet bushing. 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.
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. Ideal for fixing lighting on machine tools and welding tables.
This value applies to perfect adherence with the entire magnet surface. With thin sheets (e.g., car body, fridge casing), the force will be much smaller because steel cannot absorb the entire magnetic field. For side detachment (sliding), the force is only approx. 1/3 of nominal capacity.
The housing has anti-corrosion protection in the form of galvanic zinc or nickel plating. 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 and disadvantages of neodymium magnets.

Pros

Apart from their superior magnetism, neodymium magnets have these key benefits:
  • They virtually do not lose power, because even after 10 years the performance loss is only ~1% (based on calculations),
  • They are resistant to demagnetization induced by presence of other magnetic fields,
  • A magnet with a shiny nickel surface has better aesthetics,
  • Neodymium magnets deliver maximum magnetic induction on a small surface, which increases force concentration,
  • Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the form) even at a temperature of 230°C or more...
  • Thanks to the ability of free molding and adaptation to specialized solutions, magnetic components can be produced in a wide range of forms and dimensions, which expands the range of possible applications,
  • Key role in modern technologies – they are commonly used in HDD drives, electric drive systems, medical devices, also modern systems.
  • Relatively small size with high pulling force – neodymium magnets offer impressive pulling force in tiny dimensions, which allows their use in miniature devices

Cons

What to avoid - cons of neodymium magnets and ways of using them
  • To avoid cracks under impact, we recommend using special steel housings. Such a solution secures the magnet and simultaneously increases its durability.
  • When exposed to high temperature, neodymium magnets experience 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
  • When exposed to humidity, magnets usually rust. For applications outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation and corrosion.
  • Limited possibility of producing threads in the magnet and complex shapes - recommended is casing - magnetic holder.
  • Potential hazard resulting from small fragments of magnets are risky, if swallowed, which gains importance in the context of child health protection. It is also worth noting that small components of these magnets are able to disrupt the diagnostic process medical after entering the body.
  • Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications

Lifting parameters

Maximum lifting capacity of the magnet – what affects it?

Holding force of 80.00 kg is a measurement result executed under the following configuration:
  • on a base made of mild steel, optimally conducting the magnetic flux
  • possessing a thickness of min. 10 mm to avoid saturation
  • characterized by lack of roughness
  • with total lack of distance (no coatings)
  • for force applied at a right angle (in the magnet axis)
  • at temperature approx. 20 degrees Celsius

Lifting capacity in real conditions – factors

In real-world applications, the real power results from many variables, ranked from crucial:
  • Gap between magnet and steel – every millimeter of separation (caused e.g. by varnish or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Base massiveness – insufficiently thick plate does not close the flux, causing part of the power to be lost to the other side.
  • Steel grade – ideal substrate is high-permeability steel. Stainless steels may attract less.
  • Plate texture – smooth surfaces guarantee perfect abutment, which increases force. Uneven metal reduce efficiency.
  • Thermal environment – temperature increase causes a temporary drop of force. Check the thermal limit for a given model.

Lifting capacity was assessed by applying a smooth steel plate of suitable thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the lifting capacity is smaller. Moreover, even a small distance between the magnet’s surface and the plate reduces the lifting capacity.

Safety rules for work with neodymium magnets
Caution required

Before use, read the rules. Sudden snapping can break the magnet or injure your hand. Be predictive.

Skin irritation risks

A percentage of the population experience a contact allergy to Ni, which is the typical protective layer for neodymium magnets. Extended handling might lead to dermatitis. We strongly advise wear safety gloves.

Bone fractures

Large magnets can smash fingers instantly. Never place your hand betwixt two attracting surfaces.

Threat to electronics

Equipment safety: Strong magnets can ruin payment cards and delicate electronics (heart implants, hearing aids, mechanical watches).

Medical implants

Life threat: Neodymium magnets can turn off heart devices and defibrillators. Do not approach if you have electronic implants.

Precision electronics

Remember: neodymium magnets generate a field that disrupts sensitive sensors. Keep a safe distance from your phone, device, and navigation systems.

Fire warning

Combustion risk: Rare earth powder is highly flammable. Do not process magnets without safety gear as this risks ignition.

Product not for children

Neodymium magnets are not suitable for play. Accidental ingestion of multiple magnets can lead to them connecting inside the digestive tract, which poses a critical condition and requires immediate surgery.

Do not overheat magnets

Regular neodymium magnets (N-type) lose magnetization when the temperature surpasses 80°C. Damage is permanent.

Magnet fragility

Despite metallic appearance, the material is delicate and cannot withstand shocks. Avoid impacts, as the magnet may shatter into hazardous fragments.

Danger! Looking for details? Read our article: Are neodymium magnets dangerous?