tel: +48 888 99 98 98

neodymium magnets

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

Magnets for water searching F200 GOLD

Where to purchase strong magnet? Magnet holders in airtight and durable steel casing are perfect for use in difficult, demanding climate conditions, including during rain and snow see

magnetic holders

Holders with magnets can be used to improve production processes, underwater discoveries, or finding meteorites made of ore read...

Order is always shipped on the day of purchase before 2:00 PM on business days.

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

UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread

rubber magnetic holder external thread

Catalog no 340313

GTIN: 5906301814757

5

Diameter Ø [±0,1 mm]

88 mm

Height [±0,1 mm]

8.5 mm

Weight

193 g

Load capacity

42.9 kg / 420.71 N

40.59 with VAT / pcs + price for transport

33.00 ZŁ net + 23% VAT / pcs

bulk discounts:

Need more?

price from 1 pcs
33.00 ZŁ
40.59 ZŁ
price from 10 pcs
31.02 ZŁ
38.15 ZŁ
price from 30 pcs
29.04 ZŁ
35.72 ZŁ

Need advice?

Call us now +48 888 99 98 98 or contact us by means of form our website.
Force and shape of magnetic components can be analyzed on our modular calculator.

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

UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
Specification/characteristics UMGGZ 88x8.5 [M8] GZ / N38 - rubber magnetic holder external thread
properties
values
Cat. no.
340313
GTIN
5906301814757
Production/Distribution
Dhit sp. z o.o.
Country of origin
Poland / China / Germany
Customs code
85059029
Diameter Ø
88 mm [±0,1 mm]
Height
8.5 mm [±0,1 mm]
Weight
193 g [±0,1 mm]
Load capacity ~ ?
42.9 kg / 420.71 N
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 standard when mounting lighting (beacons), antennas, searchlights, and cameras on a car roof. Ideally suited for outdoor, off-road applications and on special vehicles.
Yes, these holders are completely resistant to weather conditions thanks to the hermetic Santoprene rubber coating. The rubber is resistant to UV radiation and does not crack in the sun.
Soft rubber provides a barrier between the hard magnet and the paint, eliminating the risk of scratches. However, it is worth remembering to wipe the roof of dust and sand before mounting so that it does not get under the magnet.
The length of the protruding screw is usually from 8 to 15 mm (you will find the exact dimension in the technical specification). Allows easy lamp mounting by passing the screw through the hole in the holder and tightening the nut.
Thanks to the multi-pole system (Multi-Pole), force is concentrated at the surface, giving a strong grip. For secure mounting on a car roof, we recommend using several holders (e.g., 3-4 pieces per lamp).

Strengths as well as weaknesses of NdFeB magnets.

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

  • Their power remains stable, and after around ten years it decreases only by ~1% (theoretically),
  • Magnets effectively protect themselves against demagnetization caused by ambient magnetic noise,
  • In other words, due to the reflective surface of nickel, the element gains visual value,
  • Magnets are distinguished by very high magnetic induction on the active area,
  • Through (adequate) combination of ingredients, they can achieve high thermal resistance, allowing for operation at temperatures reaching 230°C and above...
  • In view of the possibility of accurate molding and adaptation to individualized needs, magnetic components can be created in a wide range of geometric configurations, which makes them more universal,
  • Versatile presence in innovative solutions – they are used in hard drives, electric motors, medical devices, as well as multitasking production systems.
  • Thanks to their power density, small magnets offer high operating force, in miniature format,

Disadvantages of NdFeB magnets:

  • To avoid cracks upon strong impacts, we suggest using special steel holders. Such a solution protects the magnet and simultaneously improves its durability.
  • Neodymium magnets decrease their strength under the influence of heating. As soon as 80°C is exceeded, many of them start losing their force. 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 corrode. Therefore when using outdoors, we advise using waterproof magnets made of rubber, plastic or other material resistant to moisture
  • Limited ability of creating threads in the magnet and complex shapes - preferred is a housing - mounting mechanism.
  • Possible danger resulting from small fragments of magnets are risky, when accidentally swallowed, which gains importance in the context of child safety. Additionally, tiny parts of these devices can be problematic in diagnostics medical after entering the body.
  • With budget limitations the cost of neodymium magnets can be a barrier,

Magnetic strength at its maximum – what contributes to it?

Magnet power was determined for the most favorable conditions, assuming:

  • with the use of a yoke made of low-carbon steel, guaranteeing full magnetic saturation
  • possessing a massiveness of minimum 10 mm to ensure full flux closure
  • with an ground contact surface
  • without the slightest clearance between the magnet and steel
  • for force applied at a right angle (in the magnet axis)
  • at room temperature

Key elements affecting lifting force

Please note that the application force will differ depending on the following factors, starting with the most relevant:

  • Distance (between the magnet and the plate), as even a microscopic distance (e.g. 0.5 mm) can cause a reduction in force by up to 50% (this also applies to paint, corrosion or debris).
  • Pull-off angle – remember that the magnet holds strongest perpendicularly. Under sliding down, the holding force drops significantly, often to levels of 20-30% of the nominal value.
  • Steel thickness – too thin steel does not accept the full field, causing part of the power to be wasted to the other side.
  • Steel grade – the best choice is pure iron steel. Cast iron may attract less.
  • Surface condition – ground elements guarantee perfect abutment, which improves field saturation. Uneven metal weaken the grip.
  • Temperature influence – high temperature weakens pulling force. Exceeding the limit temperature can permanently damage the magnet.

* Lifting capacity was determined using a smooth steel plate of optimal thickness (min. 20 mm), under perpendicular detachment force, whereas under parallel forces the holding force is lower. Additionally, even a small distance {between} the magnet and the plate decreases the load capacity.

Safe handling of neodymium magnets

Magnet fragility

Neodymium magnets are ceramic materials, which means they are fragile like glass. Collision of two magnets leads to them cracking into shards.

Do not drill into magnets

Powder produced during grinding of magnets is flammable. Avoid drilling into magnets without proper cooling and knowledge.

ICD Warning

Patients with a pacemaker must maintain an large gap from magnets. The magnetic field can interfere with the operation of the life-saving device.

Nickel allergy

Certain individuals have a contact allergy to nickel, which is the common plating for neodymium magnets. Frequent touching might lead to skin redness. We strongly advise wear protective gloves.

Cards and drives

Data protection: Strong magnets can ruin data carriers and delicate electronics (pacemakers, medical aids, mechanical watches).

Bone fractures

Big blocks can break fingers instantly. Do not put your hand between two strong magnets.

Respect the power

Exercise caution. Neodymium magnets act from a long distance and snap with huge force, often faster than you can react.

Do not overheat magnets

Avoid heat. NdFeB magnets are susceptible to heat. If you require operation above 80°C, ask us about HT versions (H, SH, UH).

Magnetic interference

GPS units and mobile phones are highly sensitive to magnetic fields. Close proximity with a strong magnet can ruin the sensors in your phone.

Keep away from children

Strictly store magnets out of reach of children. Risk of swallowing is high, and the consequences of magnets connecting inside the body are very dangerous.

Security!

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

Dhit sp. z o.o.

e-mail: bok@dhit.pl

tel: +48 888 99 98 98