tel: +48 22 499 98 98

neodymium magnets

We offer blue color magnets Nd2Fe14B - our offer. Practically all magnesy on our website are in stock for immediate delivery (check the list). See the magnet pricing for more details check the magnet price list

Magnets for water searching F200 GOLD

Where to purchase very strong magnet? Magnet holders in airtight and durable enclosure are ideally suited for use in challenging climate conditions, including during rain and snow see...

magnetic holders

Holders with magnets can be used to enhance production processes, underwater discoveries, or searching for meteorites made of metal see more...

Shipping is shipped if the order is placed by 2:00 PM on weekdays.

Dhit sp. z o.o.
Product available Ships tomorrow

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

conical magnetic holder

Catalog no 220326

GTIN: 5906301814160

5

Diameter Ø [±0,1 mm]

16 mm

cone dimension Ø [±0,1 mm]

6.5x3.5 mm

Height [±0,1 mm]

5 mm

Weight

5.5 g

Magnetization Direction

↑ axial

Load capacity

5 kg / 49.03 N

Coating

[NiCuNi] nickel

4.48 with VAT / pcs + price for transport

3.64 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
3.64 ZŁ
4.48 ZŁ
price from 100 pcs
3.09 ZŁ
3.81 ZŁ
price from 250 pcs
2.37 ZŁ
2.91 ZŁ

Need advice?

Contact us by phone +48 888 99 98 98 alternatively send us a note via inquiry form the contact page.
Lifting power along with shape of a neodymium magnet can be verified on our online calculation tool.

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

UMS 16x6.5x3.5x5 / N38 - conical magnetic holder
Specification/characteristics UMS 16x6.5x3.5x5 / N38 - conical magnetic holder
properties
values
Cat. no.
220326
GTIN
5906301814160
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
16 mm [±0,1 mm]
cone dimension Ø
6.5x3.5 mm [±0,1 mm]
Height
5 mm [±0,1 mm]
Weight
5.5 g [±0,1 mm]
Magnetization Direction
↑ axial
Load capacity ~ ?
5 kg / 49.03 N
Coating
[NiCuNi] nickel
Manufacturing Tolerance
± 0.1 mm

Magnetic properties of material N38

properties
values
units
remenance Br [Min. - Max.] ?
12.2-12.6
kGs
remenance Br [Min. - Max.] ?
1220-1260
T
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 106
°C-1
Thermal expansion perpendicular (⊥) to orientation (M)
-(1-3) x 10-6
°C-1
Young's modulus
1.7 x 104
kg/mm²

Shopping tips

This type of holder is perfect for mounting magnetic latches in cabinets, doors, and flaps. The holder can be screwed directly to wood, wall, metal, or plastic. Model UMS 16x6.5x3.5x5 / N38 will successfully hold inspection doors, tools in the workshop, or shop display elements.
Remember that neodymium breaks easily if the screw is tightened too hard. We recommend tightening manually with feeling (screwdriver), not an impact driver. Using too large a countersunk screw may cause the magnetic ring to crack.
To create a pair (magnet-magnet), you need one holder with an N pole on the chamfer and another with an S pole. Often a more convenient and cheaper solution is using one magnet and a steel washer (plate) as an armature. Mounting a magnet to a plate eliminates the problem of matching poles and is easier.
This value is the maximum achievement a magnet can obtain on a thick sheet. To increase friction and prevent sliding, it is worth sticking a piece of rubber or anti-slip tape on the magnet. Paint or veneer on metal also reduces effective attraction force.
Thanks to the metal cup, the magnetic field is concentrated on the active side, which significantly increases force. It is a more durable and safer solution in everyday use than a bare ring. A bare ring has a dispersed field on both sides but is weaker in point holding.

Pros and cons of neodymium magnets.

In addition to their pulling strength, neodymium magnets provide the following advantages:

  • They do not lose strength, even over approximately 10 years – the decrease in lifting capacity is only ~1% (based on measurements),
  • They maintain their magnetic properties even under close interference source,
  • In other words, due to the smooth surface of nickel, the element gains a professional look,
  • They are known for high magnetic induction at the operating surface, making them more effective,
  • Through (appropriate) combination of ingredients, they can achieve high thermal resistance, enabling operation at temperatures reaching 230°C and above...
  • Possibility of exact shaping as well as modifying to defined applications,
  • Key role in innovative solutions – they serve a role in magnetic memories, electric drive systems, medical equipment, also industrial machines.
  • Thanks to efficiency per cm³, small magnets offer high operating force, occupying minimum space,

Problematic aspects of neodymium magnets and proposals for their use:

  • At strong impacts they can crack, therefore we recommend placing them in special holders. A metal housing provides additional protection against damage, as well as increases the magnet's 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.
  • When exposed to humidity, magnets start to rust. To use them in conditions outside, it is recommended to use protective magnets, such as those in rubber or plastics, which prevent oxidation as well as corrosion.
  • Limited ability of producing nuts in the magnet and complicated forms - recommended is a housing - magnet mounting.
  • Potential hazard related to microscopic parts of magnets can be dangerous, when accidentally swallowed, which is particularly important in the context of child safety. Furthermore, small elements of these products are able to 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

Detachment force of the magnet in optimal conditionswhat contributes to it?

The load parameter shown concerns the peak performance, measured under optimal environment, specifically:

  • using a plate made of high-permeability steel, functioning as a ideal flux conductor
  • with a thickness minimum 10 mm
  • with a plane perfectly flat
  • with zero gap (without coatings)
  • under axial application of breakaway force (90-degree angle)
  • in stable room temperature

Key elements affecting lifting force

Please note that the working load may be lower subject to the following factors, starting with the most relevant:

  • Space between surfaces – every millimeter of distance (caused e.g. by veneer or unevenness) significantly weakens the pulling force, often by half at just 0.5 mm.
  • Force direction – catalog parameter refers to detachment vertically. When applying parallel force, the magnet holds much less (typically approx. 20-30% of maximum force).
  • Metal thickness – the thinner the sheet, the weaker the hold. Magnetic flux penetrates through instead of converting into lifting capacity.
  • Metal type – different alloys reacts the same. High carbon content weaken the attraction effect.
  • Plate texture – smooth surfaces ensure maximum contact, which improves field saturation. Rough surfaces weaken the grip.
  • Temperature – temperature increase causes a temporary drop of induction. Check the thermal limit for a given model.

* Holding force was tested 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. Moreover, even a small distance {between} the magnet’s surface and the plate lowers the load capacity.

Precautions when working with neodymium magnets

Heat sensitivity

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

Protective goggles

Beware of splinters. Magnets can fracture upon uncontrolled impact, ejecting sharp fragments into the air. We recommend safety glasses.

Do not drill into magnets

Fire hazard: Rare earth powder is explosive. Do not process magnets in home conditions as this risks ignition.

Product not for children

NdFeB magnets are not intended for children. Eating multiple magnets can lead to them connecting inside the digestive tract, which constitutes a critical condition and requires urgent medical intervention.

Pacemakers

Patients with a pacemaker should keep an absolute distance from magnets. The magnetic field can stop the functioning of the implant.

Allergy Warning

Certain individuals suffer from a contact allergy to nickel, which is the typical protective layer for NdFeB magnets. Frequent touching might lead to a rash. It is best to wear safety gloves.

Phone sensors

Note: neodymium magnets generate a field that disrupts precision electronics. Keep a safe distance from your phone, device, and navigation systems.

Conscious usage

Exercise caution. Rare earth magnets attract from a long distance and snap with massive power, often faster than you can react.

Magnetic media

Device Safety: Neodymium magnets can damage data carriers and delicate electronics (pacemakers, hearing aids, timepieces).

Bodily injuries

Mind your fingers. Two large magnets will snap together immediately with a force of several hundred kilograms, crushing anything in their path. Be careful!

Warning!

More info about risks in the article: Safety of working with magnets.

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98