Custom N52 Tiny Neodymium 1mm Rod Magnets

We supply N52 Neodymium rod magnets with diameters as small as 1.0mm.
Perfect for miniaturized electronics, medical devices, and precision sensors.
These micro-magnets deliver maximum magnetic strength in the smallest possible size.

Magnets this small require specialized manufacturing.
We use high-precision slicing and micro-grinding (not standard cutting) to maintain strict dimensional tolerances.
Every component meets rigorous industrial standards, no matter how small.

Why N52 Grade? (Size vs. Power)

At the micro-scale (1mm), volume is limited.
To achieve functional holding force or sensor actuation, you need the strongest available material.

Standard:
– N52 (Maximum Energy Product).
– This is our default recommendation for 1mm rods to maximize performance.

High-Temp Options:
– If your application involves soldering or high-heat environments (micro-motors), no problem.
– We can supply N42SH or N35UH (stable up to 150°C-180°C) to prevent demagnetization.

Dimensional Precision & Tolerances

For 1mm parts, a standard tolerance of +/- 0.05mm is often too large (that’s a 5% error!).
So, we offer better – +/- 0.005mm

Diameter (Ø): 1.00mm ±0.005mm
Length (L): 1mm – 50mm ±0.05mm

Aspect Ratio:
– Standard 1:1 to 1:10
Long Rods:
– We can supply 1mm x 20mm+ rods
– Note: Extremely fragile.

Surface Coating: The “Thickness” Factor

This is the #1 technical issue with micro-magnets.
Standard Nickel plating adds ~15-20 microns, which can ruin a tight fit.

We offer specialized coatings for micro-applications:

Parylene (Recommended):
– It is an ultra-thin (2–5 microns) vacuum deposition coating.
Benefit:
– It adds almost zero thickness to the 1mm diameter.
– And provides superior waterproofing/biocompatibility (FDA approved for medical use).

Gold (Ni-Cu-Ni-Au):
– Excellent electrical conductivity.
– Benefit: Ideal for magnetic pogo-pins, connectors, and PCB applications.

Standard Nickel (Ni-Cu-Ni):
– Durable, but adds approx. 0.015mm to the diameter.
– Please account for this in your housing design and applications.

Magnetization Direction

Axial:
– Magnetized through the length (North/South on the tiny flat ends).
– Most common for sensors/actuators.

Diametric:
– Magnetized through the diameter (North/South on the curved sides).
– Used for micro-rotors.

Critical Production Note regarding Pole Marking:
– Such micro rod magnet has very small surface.
– We cannot print or laser mark polarity dots on 1mm magnets.

Solution:

We package them in “Row Packed” plastic tubes where all magnets are oriented in the same direction
This allows for easy integration into your assembly lines.

Packaging & Handling

If you dump 1,000 1mm magnets in a bag, they become an unusable “magnetic sludge.”
You must sell your packaging.

We solve the handling headache of micro-magnets:

Tube Packing:
– Magnets are stacked in rigid plastic tubes.
– This keeps them aligned and makes them easy to dispense one by one.

Vacuum Trays:
– For automated pick-and-place assembly machines.

Anti-Static Bags:
– Used for Parylene/Gold coated parts to ensure cleanliness.

Non-Magnetic Tweezers:
– We strongly recommend using plastic or ceramic tweezers for handling.
– Metal tools will make installation nearly impossible.

Application Examples

– Electronics: Magnetic pogo-pin connectors.
– Sensors: Hall effect triggers in smartwatches/wearables.
– Medical: Catheter navigation tips (using Parylene coating).
– Hobbies: Miniature wargaming models (weapon swaps) and RC micro-components.

Ordering Guide

To get a quick quote for 1mm rods, please confirm:

1). Length: (e.g., 1mm x 2mm, 1mm x 10mm).
2). Tolerance: Is standard ±0.05mm okay? Or do you need precision ±0.005mm?
3). Coating: Nickel, Gold, or Parylene?
4). Quantity: (Due to setup times, MOQ for micro-magnets is typically higher, e.g., 500+ pcs).