UMS 75x19x10.5x18 / N38 - conical magnetic holder

Product available Ships today (order by 14:00)

UMS 75x19x10.5x18 / N38 - conical magnetic holder

Name: Dhit sp. z o.o.
Address: Kościuszki 6A, Ożarów Mazowiecki, Poland, 05-850, PL
Telephone: +48 22 499 98 98
Price range: PLN 1-6500
Rating: 5

conical magnetic holder

Catalog no 220405

GTIN/EAN: 5906301814245

5.00

Diameter Ø

75 mm [±1 mm]

cone dimension Ø

19x10.5 mm [±1 mm]

Height

18 mm [±1 mm]

Weight

465 g

Magnetization Direction

↑ axial

Load capacity

162.00 kg / 1588.68 N

Coating

[NiCuNi] Nickel

technical parameters »

125.56 ZŁ with VAT / pcs + price for transport

102.08 ZŁ net + 23% VAT / pcs

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Carbon Footprint – environmental impact GPSR Regulation – product safety

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Contact us by phone +48 888 99 98 98 otherwise let us know via request form through our site.
Force along with appearance of a magnet can be reviewed with our force calculator.

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

Physical properties - UMS 75x19x10.5x18 / N38 - conical magnetic holder

Specification / characteristics - UMS 75x19x10.5x18 / N38 - conical magnetic holder

properties

properties	values
Cat. no.	220405
GTIN/EAN	5906301814245
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]
cone dimension Ø	19x10.5 mm [±1 mm]
Height	18 mm [±1 mm]
Weight	465 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 UMS 75x19x10.5x18 / N38 - conical magnetic holder

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

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 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%

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: 220405-2026

Magnet Unit Converter

Magnet pull force

Force in kg

Force in lbs

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Induction (Gs)

Tesla (T)

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It is the most popular solution for creating aesthetic, invisible door locks. The ability to flush the screw with the magnet surface allows for perfect closing without gaps. Model UMS 75x19x10.5x18 / N38 will successfully hold inspection doors, tools in the workshop, or shop display elements.

Despite the steel housing, the magnet itself is prone to cracking under strong point pressure. We recommend tightening manually with feeling (screwdriver), not an impact driver. Using too large a countersunk screw may cause the magnetic ring to crack.

For two magnets screwed with cones facing each other (faces) to attract, they must have different polarity. If you need a pair, ask about availability of complementary sets or check the description. Mounting a magnet to a plate eliminates the problem of matching poles and is easier.

The declared capacity (e.g., 162.00 kg) refers to the perpendicular force needed to detach the magnet from thick steel. In practice, when mounted on a wall (shear force), the magnet will hold significantly less (approx. 20-30% of nominal). When selecting a magnet for a cabinet, remember that the air gap (e.g., bumpers, seals) weakens the grip.

The steel housing (cup/pot) acts as a magnetic shield, directing all power to the front of the holder. The housing absorbs impacts, preventing the magnet from crumbling and cracking. A bare ring has a dispersed field on both sides but is weaker in point holding.

Advantages as well as disadvantages of neodymium magnets.

Advantages

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

They virtually do not lose power, because even after 10 years the performance loss is only ~1% (according to literature),
They are resistant to demagnetization induced by external disturbances,
A magnet with a shiny nickel surface has better aesthetics,
Magnets are distinguished by maximum magnetic induction on the outer layer,
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 option of flexible molding and adaptation to custom needs, magnetic components can be modeled in a variety of geometric configurations, which amplifies use scope,
Versatile presence in electronics industry – they are commonly used in hard drives, electromotive mechanisms, advanced medical instruments, as well as other advanced devices.
Thanks to their power density, small magnets offer high operating force, in miniature format,

Weaknesses

What to avoid - cons of neodymium magnets: application proposals

They are fragile upon too strong impacts. To avoid cracks, it is worth securing magnets in a protective case. Such protection not only protects the magnet but also improves its resistance to damage
Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their power. Therefore, we recommend our special magnets marked [AH], which maintain durability even at temperatures up to 230°C
Magnets exposed to a humid environment can rust. Therefore when using outdoors, we recommend using water-impermeable magnets made of rubber, plastic or other material protecting against moisture
Due to limitations in creating threads and complicated shapes in magnets, we recommend using casing - magnetic holder.
Possible danger to health – tiny shards of magnets are risky, when accidentally swallowed, which is particularly important in the context of child health protection. Furthermore, tiny parts of these devices can complicate diagnosis medical in case of swallowing.
High unit price – neodymium magnets cost more than other types of magnets (e.g. ferrite), which increases costs of application in large quantities

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Information about lifting capacity was determined for optimal configuration, including:

using a sheet made of mild steel, serving as a circuit closing element
whose thickness equals approx. 10 mm
with an polished touching surface
under conditions of ideal adhesion (surface-to-surface)
for force applied at a right angle (in the magnet axis)
at ambient temperature room level

Lifting capacity in real conditions – factors

In practice, the real power is determined by a number of factors, ranked from most significant:

Clearance – existence of foreign body (paint, tape, gap) acts as an insulator, which lowers capacity rapidly (even by 50% at 0.5 mm).
Force direction – note that the magnet has greatest strength perpendicularly. Under shear forces, the holding force drops drastically, often to levels of 20-30% of the nominal value.
Wall thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
Steel grade – the best choice is pure iron steel. Hardened steels may generate lower lifting capacity.
Surface condition – smooth surfaces guarantee perfect abutment, which improves field saturation. Uneven metal reduce efficiency.
Thermal environment – temperature increase results in weakening of force. Check the thermal limit for a given model.

Lifting capacity was determined by applying a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the load capacity is reduced by as much as 75%. Moreover, even a minimal clearance between the magnet and the plate reduces the holding force.

Safe handling of NdFeB magnets

ICD Warning

Life threat: Strong magnets can turn off pacemakers and defibrillators. Do not approach if you have medical devices.

Nickel allergy

Nickel alert: The Ni-Cu-Ni coating contains nickel. If an allergic reaction occurs, immediately stop handling magnets and wear gloves.

Combustion hazard

Fire hazard: Neodymium dust is highly flammable. Avoid machining magnets without safety gear as this risks ignition.

Impact on smartphones

A strong magnetic field disrupts the functioning of compasses in phones and GPS navigation. Do not bring magnets near a device to avoid breaking the sensors.

Keep away from computers

Very strong magnetic fields can corrupt files on credit cards, HDDs, and other magnetic media. Keep a distance of at least 10 cm.

Hand protection

Risk of injury: The attraction force is so immense that it can cause blood blisters, crushing, and even bone fractures. Use thick gloves.

Maximum temperature

Regular neodymium magnets (grade N) lose power when the temperature goes above 80°C. Damage is permanent.

Keep away from children

Always store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are life-threatening.

Material brittleness

Despite metallic appearance, the material is brittle and not impact-resistant. Avoid impacts, as the magnet may shatter into sharp, dangerous pieces.

Caution required

Be careful. Neodymium magnets act from a long distance and connect with massive power, often quicker than you can move away.

Security! Need more info? Check our post: Are neodymium magnets dangerous?

UMS 75x19x10.5x18 / N38 - conical magnetic holder

Physical properties - UMS 75x19x10.5x18 / N38 - conical magnetic holder

Magnetic properties of material N38

Physical properties of sintered neodymium magnets Nd2Fe14B at 20°C

Chemical composition

Sustainability

Magnet pull force

Magnetic Induction

See more products

SM 32x150 [2xM8] / N52 - magnetic separator

UMP 135x40 [M10+M12] GW F 600 kg / N38 - search holder

UMC 32x11/3x8 / N38 - cylindrical magnetic holder

MPL 25x25x10 / N38 - lamellar magnet

Advantages as well as disadvantages of neodymium magnets.

Advantages

Weaknesses

Lifting parameters

Optimal lifting capacity of a neodymium magnet – what contributes to it?

Lifting capacity in real conditions – factors

Safe handling of NdFeB magnets

ICD Warning

Nickel allergy

Combustion hazard

Impact on smartphones

Keep away from computers

Hand protection

Maximum temperature

Keep away from children

Material brittleness

Caution required

Physical properties of sintered neodymium magnets Nd₂Fe₁₄B at 20°C