![Magnetic bar SM 18x125 [2xM5] / N42](https://cdn3.dhit.pl/graphics/banners/magnet.webp "Magnetic bar SM 18x125 [2xM5] / N42")
![SM 18x125 [2xM5] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-18x125-2xm5-cij.jpg)
SM 18x125 [2xM5] / N42 - magnetic separator
magnetic separator
Catalog no 130270
GTIN/EAN: 5906301812722
Diameter Ø
18 mm [±1 mm]
Height
125 mm [±1 mm]
Weight
0.01 g
Magnetic Flux
~ 5 400 Gauss [±5%]
276.75 ZŁ with VAT / pcs + price for transport
225.00 ZŁ net + 23% VAT / pcs
bulk discounts:
Need more?
Contact us by phone
+48 888 99 98 98
if you prefer let us know using
inquiry form
through our site.
Parameters as well as structure of a magnet can be estimated with our
modular calculator.
Same-day shipping for orders placed before 14:00.
Technical parameters of the product - SM 18x125 [2xM5] / N42 - magnetic separator
Specification / characteristics - SM 18x125 [2xM5] / N42 - magnetic separator
| properties | values |
|---|---|
| Cat. no. | 130270 |
| GTIN/EAN | 5906301812722 |
| Production/Distribution | Dhit sp. z o.o. |
| Country of origin | Poland / China / Germany |
| Customs code | 85059029 |
| Diameter Ø | 18 mm [±1 mm] |
| Height | 125 mm [±1 mm] |
| Weight | 0.01 g |
| Material Type | Stainless steel AISI 304 / A2 |
| Magnetic Flux | ~ 5 400 Gauss [±5%] |
| Size/Mount Quantity | 2xM5 |
| Polarity | circumferential - 6 poles |
| Casing Tube Thickness | 1 mm |
| Manufacturing Tolerance | ±1 mm |
Magnetic properties of material N42
| properties | values | units |
|---|---|---|
| remenance Br [min. - max.] ? | 12.9-13.2 | kGs |
| remenance Br [min. - max.] ? | 1290-1320 | mT |
| coercivity bHc ? | 10.8-12.0 | kOe |
| coercivity bHc ? | 860-955 | kA/m |
| actual internal force iHc | ≥ 12 | kOe |
| actual internal force iHc | ≥ 955 | kA/m |
| energy density [min. - max.] ? | 40-42 | BH max MGOe |
| energy density [min. - max.] ? | 318-334 | 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 |
Table 1: Rod construction
SM 18x125 [2xM5] / N42
| Parameter | Value | Description / Unit |
|---|---|---|
| Diameter (Ø) | 18 | mm |
| Total length | 125 | mm (L) |
| Active length | 89 | mm |
| Section count | 3 | modules |
| Dead zone | 36 | mm (2x 18mm starter) |
| Weight (est.) | ~242 | g |
| Active area | 50 | cm² (Area) |
| Housing material | AISI 304 | 1.4301 (Inox) |
| Surface finish | Ra < 0.8 µm | Polished |
| Temp. class | 80°C | Standard (N) |
| Force loss (at max °C) | -12.8% | Reversible loss (physics) |
| Force (calculated) | 3.8 | kg (theor.) |
| Induction (surface) | ~5 400 | Gauss (Max) |
Chart 2: Field profile (3 sections)
Chart 3: Temperature performance
Material specification
| 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% |
Ecology and recycling (GPSR)
| recyclability (EoL) | 100% |
| recycled raw materials | ~10% (pre-cons) |
| carbon footprint | low / zredukowany |
| waste code (EWC) | 16 02 16 |
View more offers
![SM 32x300 [2xM8] / N42 - magnetic separator](https://cdn3.dhit.pl/graphics/products/sm-32x300-2xm8-pel.jpg "SM 32x300 [2xM8] / N42 - magnetic separator")
Strengths as well as weaknesses of neodymium magnets.
Pros
- Their power is maintained, and after around 10 years it drops only by ~1% (according to research),
- Magnets effectively defend themselves against demagnetization caused by ambient magnetic noise,
- Thanks to the glossy finish, the coating of nickel, gold-plated, or silver gives an modern appearance,
- The surface of neodymium magnets generates a powerful magnetic field – this is a distinguishing feature,
- Neodymium magnets are characterized by very high magnetic induction on the magnet surface and can function (depending on the shape) even at a temperature of 230°C or more...
- Possibility of detailed machining as well as modifying to individual conditions,
- Wide application in electronics industry – they are commonly used in hard drives, electric motors, diagnostic systems, also technologically advanced constructions.
- Thanks to their power density, small magnets offer high operating force, with minimal size,
Limitations
- At very strong impacts they can crack, therefore we advise placing them in steel cases. A metal housing provides additional protection against damage, as well as increases the magnet's durability.
- Neodymium magnets demagnetize when exposed to high temperatures. After reaching 80°C, many of them experience permanent weakening of strength (a factor is the shape and dimensions of the magnet). We offer magnets specially adapted to work at temperatures up to 230°C marked [AH], which are very resistant to heat
- They oxidize in a humid environment. For use outdoors we advise using waterproof magnets e.g. in rubber, plastic
- We recommend a housing - magnetic mount, due to difficulties in realizing nuts inside the magnet and complex forms.
- Possible danger resulting from small fragments of magnets are risky, in case of ingestion, which is particularly important in the context of child safety. Additionally, small components of these devices are able to be problematic in diagnostics medical after entering the body.
- Higher cost of purchase is one of the disadvantages compared to ceramic magnets, especially in budget applications
Pull force analysis
Maximum magnetic pulling force – what contributes to it?
- using a base made of high-permeability steel, serving as a circuit closing element
- with a cross-section of at least 10 mm
- characterized by lack of roughness
- without the slightest insulating layer between the magnet and steel
- during pulling in a direction vertical to the mounting surface
- at room temperature
Magnet lifting force in use – key factors
- Distance – existence of any layer (rust, tape, air) interrupts the magnetic circuit, which reduces capacity rapidly (even by 50% at 0.5 mm).
- Force direction – catalog parameter refers to detachment vertically. When attempting to slide, the magnet exhibits significantly lower power (typically approx. 20-30% of nominal force).
- Plate thickness – too thin sheet causes magnetic saturation, causing part of the power to be wasted to the other side.
- Metal type – different alloys attracts identically. High carbon content worsen the interaction with the magnet.
- Surface finish – ideal contact is obtained only on polished steel. Any scratches and bumps reduce the real contact area, reducing force.
- Thermal conditions – NdFeB sinters have a sensitivity to temperature. When it is hot they are weaker, and in frost gain strength (up to a certain limit).
Lifting capacity was determined with the use of a steel plate with a smooth surface of suitable thickness (min. 20 mm), under perpendicular pulling force, however under attempts to slide the magnet the load capacity is reduced by as much as fivefold. In addition, even a minimal clearance between the magnet’s surface and the plate lowers the load capacity.
Safety rules for work with neodymium magnets
Powerful field
Be careful. Rare earth magnets act from a distance and snap with massive power, often quicker than you can react.
Protect data
Device Safety: Strong magnets can ruin data carriers and sensitive devices (pacemakers, hearing aids, timepieces).
Life threat
For implant holders: Powerful magnets affect medical devices. Keep at least 30 cm distance or ask another person to handle the magnets.
Dust explosion hazard
Powder created during cutting of magnets is self-igniting. Do not drill into magnets unless you are an expert.
Nickel allergy
Some people have a hypersensitivity to nickel, which is the common plating for NdFeB magnets. Extended handling can result in dermatitis. We recommend use protective gloves.
Phone sensors
Remember: rare earth magnets generate a field that interferes with precision electronics. Keep a safe distance from your mobile, tablet, and navigation systems.
Bone fractures
Protect your hands. Two powerful magnets will join instantly with a force of massive weight, destroying everything in their path. Exercise extreme caution!
Eye protection
NdFeB magnets are ceramic materials, meaning they are very brittle. Impact of two magnets leads to them breaking into small pieces.
Permanent damage
Standard neodymium magnets (grade N) undergo demagnetization when the temperature surpasses 80°C. The loss of strength is permanent.
Do not give to children
NdFeB magnets are not intended for children. Eating several magnets can lead to them attracting across intestines, which constitutes a critical condition and necessitates immediate surgery.
Tabela kosztu i czasu dostawy
Płatność przed wysyłką:
GLS kurier
Przesyłka będzie u Ciebie za 2-3 dni
14.99 ZŁ
InPost Paczkomaty 24/7
Przesyłka będzie u Ciebie za 1-2 dni
12.30 ZŁ
Płatność przy odbiorze (pobranie):
GLS kurier
Przesyłka będzie u Ciebie za 1-2 dni
23.00 ZŁ
Rate the product
Your rating