Product Overview
Our NdFeB Column Magnet is a cylindrical rare‑earth permanent magnet produced from sintered Nd–Fe–B alloy, designed to deliver strong, stable magnetic performance in applications where space constraints or cylindrical integration are required. Thanks to its geometry and high‑energy material, this magnet rod is well suited for motor rotors, linear actuators, sensor modules, magnetic couplings, and other precision applications. We offer standard sizes and customizable rods to match various design specifications - making this product ideal for OEMs, automation equipment makers, and system integrators requiring reliable magnet supply in volume.
Technical Specifications & Material Properties
- Magnetic Material: Sintered Nd–Fe–B (Neodymium‑Iron‑Boron) - recognized as the strongest commercially available permanent magnet material.
- Magnet Grade Options: From N35 up to N52 (other grades / high‑temperature grades available on request)
- Shape: Cylindrical rod / column - diameter and length fully customisable according to your assembly or motor design needs.
- Coating / Finish: Standard Ni‑Cu‑Ni (nickel‑copper‑nickel) plating to protect against corrosion; alternative coatings (zinc, epoxy) can be provided for specific environment requirements.
- Magnetization Direction & Options: Axial or radial magnetization depending on application (rotor/stator, magnetic coupling, sensor) - provided per drawing or design input.
- Batch & Quality Control: Each batch tested for residual flux, coercivity and dimensional tolerance; custom batches can come with test/QA documentation.
(Custom sizes, magnetization orientation, coating and tolerances can be adjusted upon request through our custom magnet services.)
Typical Applications & Use Cases
- Electric motors and generators: As rotor or stator magnets where cylindrical shape fits shaft or rotor core, delivering stable magnetic flux and high torque density.
- Linear actuators and sensors: Column magnets embedded in actuator housings or sensor modules for precise magnetic actuation or detection.
- Magnetic couplings and clutches: Cylindrical magnets allow compact coupling designs for shafts and rotating assemblies.
- Automation & industrial equipment: Used in robotic modules, magnetic chucks, fixture systems, and assemblies where space is limited and magnetic force is critical.
- Custom magnetic assemblies: For any bespoke magnetic design requiring rod/column geometry - we can produce per drawing to suit requirements.
Advantages for OEM & Bulk Buyers
- Efficient space utilization: Cylindrical Rod geometry is easier to embed into round housings or shaft-based assemblies, reducing need for complex machining or adapter parts.
- High magnetic performance per volume: Using Nd–Fe–B material, column magnets deliver strong magnetic energy even in small diameters - beneficial for small motors, compact actuators, or precision devices.
- Customizable & scalable supply: We support bulk orders and custom runs. Whether you need hundreds or thousands, each magnet meets consistent specs and comes with quality verification.
- Flexible coating & durability: With nickel plating and optional coatings, the magnets remain corrosion-resistant and durable - suitable for industrial environments or assemblies exposed to moisture.
- Simplified assembly and integration: With pre-machined cylindrical shape and consistent tolerances, integration into your device or mechanism is straightforward, saving assembly time and costs.
Packaging, Quality Control & Supply Chain Support
Each magnet rod is individually separated to avoid magnetic clumping, wrapped, and packed in anti‑magnetic padding for safe transport. Bulk orders are palletized, labeled with batch numbers and QC documentation. We offer full traceability, batch reports (magnetic flux, dimensions, coating verification) to support your procurement and quality audit processes. Custom packaging - trays, ESD-safe boxes, or assembly‑ready kits - is available on request for large-volume contracts.
Frequently Asked Questions
Q1: Can you produce column magnets with custom diameter and length according to our drawing?
Yes. We accept CAD or technical drawings and can manufacture magnets with custom size, magnetization direction, coating and tolerance as per your requirements.
Q2: What grades are available and what difference do they make?
We offer standard grades from N35 to N52. Higher grades like N50–N52 deliver stronger magnetic energy and better performance per volume - ideal for compact designs or high flux demand. For higher temperature or special requirements, alternative grades can be provided.
Q3: Are the magnets coated for corrosion resistance?
Yes - standard Ni‑Cu‑Ni plating is applied. If your application involves humidity, chemicals or harsh environments, we can apply epoxy or zinc coatings upon request for enhanced protection.
Q4: Can you support small sample orders as well as large volume orders?
Absolutely. We welcome both small prototype orders and bulk industrial orders. Every order is processed with the same quality standards, and batch documentation is provided for traceability.
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