Alnico Rod Magnet 3mm

Alnico Rod Magnet Ø3mm is a cylindrical permanent magnet made from aluminum-nickel-cobalt (AlNiCo) alloy, designed for compact sensing and precision positioning applications.
Manufactured through casting and precision machining, the rod structure provides stable dimensional control and consistent magnetic performance in small-scale assemblies.
The Ø3mm diameter allows integration into tight installation spaces such as sensor housings, micro-mechanical components, and instrument systems.
Typically magnetized along the axial direction, generating a linear magnetic field suitable for reed switch and Hall sensor activation.

Magnetic Performance Characteristics

Stable Axial Flux Output

The Alnico Rod Magnet Ø3mm generates a stable axial magnetic field along its length, providing consistent flux output from the two pole ends for sensor and positioning applications.

Consistent Sensor Response

Stable magnetic field distribution supports repeatable triggering behavior in reed switch and Hall sensor systems, ensuring uniform signal response in compact electronic assemblies.

Long-Term Magnetic Stability

The AlNiCo material maintains low magnetic drift under continuous operation, helping preserve flux consistency in long-term sensing and control devices.

OEM & Custom Manufacturing

Custom Dimensions

We provide custom diameter and length options for Alnico rod magnets to match different sensor housings, instrument structures, and micro mechanical assemblies.

Magnetization Options

Axial magnetization is standard, while directional or application-specific magnetization can be produced based on sensor design and magnetic circuit requirements.

Drawing-Based Production

Manufacturing can be carried out according to customer drawings or technical specifications, ensuring dimensional accuracy and stable magnetic performance in final assembly.

Sample Development Support

Prototype samples can be provided for magnetic testing, fit verification, and functional validation before mass production to support OEM development projects.

FAQ

What is an Alnico rod magnet used for?

Alnico rod magnets are used in reed switch systems, Hall sensors, and miniature positioning devices where a stable axial magnetic field is required for signal triggering or detection.

Is this magnet suitable for sensor applications?

Yes. It is commonly used in reed switches and Hall effect sensors for position detection, switching control, and low-force magnetic triggering systems.

Can the size be customized?

Yes. Diameter, length, and tolerances can be customized according to OEM drawings or specific device requirements.

How is magnetic consistency controlled?

Each batch is tested for magnetic flux stability and dimensional accuracy to ensure consistent performance across production for sensor applications.

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