Our bar magnets are engineered with a proprietary sintering process that ensures consistent magnetic flux density along the entire length – a critical advantage for linear applications. Unlike competitors’ bar magnets with uneven flux distribution, our products deliver ≤2% variance in remanence (Br) across the bar, reducing performance inconsistencies in your end products.
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bar magnets
With 30 years of expertise as a direct magnet manufacturing specialist, our high-performance bar magnets are engineered for consistent magnetic strength and dimensional precision across industrial, automotive, and renewable energy applications. Produced via full vertical integration from high-purity neodymium raw materials (≥95% purity, no recycled content), our bar magnets deliver exceptional axial magnetic performance, tight tolerance control (±0.01mm), and long-term stability, complying with global quality standards for export to Europe, North America, and Asia.
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Product Description
Industrial Grade Bar Magnets: High-Strength Neodymium for Critical Applications
Key Advantages of Our Bar Magnets
Uniform Magnetic Performance
Extreme Temperature Resilience
We formulate our bar magnets with high-grade dysprosium iron (not low-cost holmium iron) to enhance high-temperature stability. Our SH-grade bar magnets maintain 90% of their magnetic strength at 150°C, while UH-grade variants withstand 180°C – perfect for under-hood automotive bar magnet applications and industrial heating equipment.
Custom Length & Profile Options
Our CNC machining centers produce bar magnets with lengths from 0.2mm (ultra-thin) to 300mm (large-format), and cross-sections including rectangular, square, and tapered profiles. Every bar magnet is finished with a uniform Ni-Cu-Ni triple-layer plating (5μm per layer) for corrosion resistance, passing 720-hour salt spray tests with no degradation.
Technical Specifications of Standard Bar Magnets
The table below outlines our most commonly requested bar magnet configurations. Custom grades, dimensions, and coatings (Zn, Epoxy, Au) are available to meet your specific application needs, including high-corrosion or high-temperature environments.
| Grade | Bar Dimensions (L x W x H) mm | Remanence (Br) mT | Coercivity (Hcj) kA/m | Max Temp (°C) | Typical Applications |
|---|---|---|---|---|---|
| N40 | 20x5x3, 50x10x5, 80x15x8 | 1260-1280 | ≥955 | 80 | Consumer electronics, small linear actuators |
| N45H | 30x8x4, 60x12x6, 100x20x10 | 1390-1410 | ≥1380 | 120 | Automotive sensors, HVAC linear motors |
| N50SH | 40x10x5, 80x15x8, 150x25x12 | 1450-1470 | ≥1620 | 150 | Industrial magnetic separators, servo motors |
| N42UH | 60x12x6, 100x20x10, 200x30x15 | 1310-1330 | ≥2010 | 180 | Aerospace linear actuators, high-temp equipment |
Quality Assurance for Global Bar Magnet Markets
Every batch of bar magnets undergoes a 14-step quality control process, from raw material composition analysis (via X-ray fluorescence spectrometry) to final magnetic performance testing with digital gauss meters. We track every bar magnet via lot numbers, ensuring full traceability from raw material sourcing to final shipment. Our bar magnets comply with IATF 16949 (automotive), ISO 9001, REACH, and RoHS 2.0, enabling seamless export to Europe, North America, and Asia-Pacific regions.
IATF 16949:2016 ISO 9001:2015 REACH Compliant RoHS 2.0 Certified SGS 300+ Tests Passed
Packaging & Delivery for Bar Magnets
Our bar magnets are packaged to prevent bending, chipping, and magnetic interference during global shipping. Each bar magnet is individually wrapped in anti-static film and placed in custom foam inserts (cut to match bar length) within 8-cell reinforced plastic trays, then packed into export-grade corrugated cartons. We offer flexible delivery: free sample shipments (5-10 standard bar magnets) with 3-5 day express delivery, small-batch production (1-2 weeks lead time), and mass production (2-4 weeks lead time) with T/T, L/C, and PayPal payment options.
Source Custom Bar Magnets Direct from the Factory
Whether you need standard bar magnets or fully customized linear magnetic solutions, our engineering team provides free technical support – including magnetic circuit design, material selection, and sample testing. With 30 years of focus on magnetic materials, we deliver bar magnets that balance performance, cost, and reliability for your most critical applications.
Contact us 24/7 via WhatsApp/WeChat/Tel: +86-18226620303 | Sample delivery: 3-5 business days
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