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【Are You Struggling with Micron-Sized Iron Contamination?】 Our high-intensity magnetic bar separators （from 2500Gs to 16000Gs） are specifically engineered to capture microscopic or millimeter-scale ferrous impurities in ultra-fine powders, high-viscosity slurries, and food production. Protect your costly downstream equipment and ensure final product purity.
Ferrous Removal for Lithium Battery Slurry & Fine Chemicals
Sanitary Filtration for Food & Pharma Powders
Protection for Plastic Granules & Pellets
Chemical Solvent Filtration
Our magnetic bar separators (also called magnetic filter bars or rods or magnetic tube) are engineered to capture both micron-scale and millimeter-scale ferrous contaminants in powders, liquids, and high-viscosity slurries. These separators ensure product purity and equipment protection in industries such as food processing, chemical processing, and recycling.
A magnetic bar separator is a permanent magnetic component typically installed in pipelines, silos, and conveyor end points to attract and capture ferrous impurities before they enter downstream equipment. These bars are used in industries that require stringent contamination control and product purity.
Common synonyms to align with search queries:
magnetic filter bar
magnetic filter rod
magnetic tube separator
magnetic bar for ferrous removal
Our magnetic bars are not just simple tubes; they are high-performance separation instruments built with precision:
Advanced Magnetic Circuit Design: Each rod is composed of high-grade permanent magnets and high-permeability iron yokes. Through a specialized magnetic circuit configuration, we maximize the surface gauss for peak contaminant capture.
Premium Material Housing: We use only 304 or 316L seamless stainless steel tubes to ensure maximum corrosion resistance and structural integrity in harsh industrial environments.
Hermetically Sealed Protection: The magnets are perfectly sealed within the tube via full-perimeter TIG welding at both ends. This 100% waterproof and airtight seal prevents internal oxidation and ensures long-term magnetic stability, meeting the strictest food and pharmaceutical safety standards.
✔ Customized Magnetic Strength Options
Choose from various core magnet types — Ferrite, NdFeB, SmCo — with surface strength ranging from ~2,500 Gs up to ~16,000 Gs for precise contaminant capture.
✔ Flexible Size & Shape Options
Magnetic bar diameters from Ø10–100 mm, customized lengths up to 2500 mm, and shapes including cylindrical, square, and threaded ends for versatile installation.
✔ Sanitary & Corrosion‑Resistant Design
Made with 316L stainless steel seamless tubes, offering mirror polishing to meet food and pharmaceutical hygiene standards and minimize contamination risks.
✔ High‑Temperature Performance
Ferrite bars operate from –40 °C to 250 °C, while NdFeB and SmCo versions cover broader temperature ranges for tough industrial environments.
✔ Multiple Mounting Configurations
Support for single‑bar, parallel bar grids, drawer‑type inserts, and swing‑out assemblies for convenient cleaning and maintenance.
Magnetic bar separators are widely used in industries where ferrous contamination damages equipment or degrades product quality. Common uses include:
Powder Processing & Granular Materials
Especially in plastics, flour, ceramics, chemicals, and minerals.
Food & Beverage Production
Ensures compliance with HACCP and FDA standards by removing metallic particles.
Lithium Battery Material Processing
Critical for coating operations where micron iron particles can compromise battery performance.
Liquid & Slurry Filtration
Used in water treatment, chemical solvent filtration, and high‑viscosity liquid systems.
For an in-depth look at the latest trends in industrial automation and magnetic separation technologies, visit MIT’s research on manufacturing efficiency. Their extensive studies highlight how advanced magnetic separation plays a critical role in improving manufacturing processes across various industries.
Our 14,000 Gs magnetic bars are the only effective way to capture sub-micron iron particles, preventing battery short-circuits and performance failure in anode/cathode material production. Link to: Magnetic Strainer
Utilizing 316L stainless steel construction and sanitary polishing, our magnetic bars ensure compliance with global food safety standards. Quick-clean design, such as jacketed magnetic rods, minimizes downtime.
Link to: Magnetic Drawer
Serving as the first line of defense, the magnetic bar removes tramp iron from plastic feedstock, significantly reducing maintenance costs and wear on expensive extruder screws and nozzles.
Link to: Hopper Magnet Filter
In critical industries like fine chemicals, petrochemicals, and high-performance material manufacturing, solvents often undergo continuous circulation. This process, while cost-effective, introduces microscopic iron-magnetic contaminants (e.g., rust, stainless steel wear particles) from circulating pumps, valves, and piping.
Our high-intensity magnetic bar separators are integrated into magnetic liquid traps or pipeline filters to serve a dual function:
Product Purity Assurance:
The ultra-high magnetic gradient generated by 16,000 Gs NdFeB magnetic bars efficiently captures sub-micron iron ions and oxide particles, preventing these contaminants from inducing side reactions, changing product color, or degrading the purity of final chemicals (e.g., electronic-grade solvents).
Protection of Precision Components:
Removing these hard, tiny particles drastically extends the lifespan of expensive downstream equipment, including high-pressure pumps, metering nozzles, filtration membranes, and catalyst beds, thereby eliminating catastrophic damage and unscheduled downtime.
For this highly corrosive environment, our solution utilizes 316L seamless stainless steel casings for chemical compatibility and offers specialized SmCo or high-temperature coated NdFeB bars for processes operating at elevated temperatures (up to 500 °C), ensuring stable magnetic performance regardless of thermal fluctuations. We also recommend Easy-Clean designs for safe, quick maintenance, minimizing operator exposure to hazardous solvents.
The magnetic bars generate a magnetic field that attracts ferrous particles into the stainless steel tube’s surface. As material flows past, contaminants are trapped, preventing them from entering downstream processes.
👉 Proven High Surface Field Strength
Our NdFeB magnetic bar separators of certain specifications achieving surface magnetic field strength exceeding 16,000 Gauss, ensuring efficient removal even of microscopic iron contaminants.
👉 Reliable Material Protection
Industrial-grade stainless steel housings protect magnetic cores and promote long service life in harsh environments.
👉 Foodsafe & Sanitary Options
316L polished construction meets stringent hygiene standards for food, beverage, and pharma applications.
👉 Custom Solutions Available
Custom diameters, lengths, end designs, and magnetic strength configurations to match your exact process needs.
| Feature | NdFeb Magnetic Bar Separator | Ferrite bar Magnet |
|---|---|---|
| Magnetic Strength | High (up to 16000 Gs) | Moderate 2500Gs |
| Temperature Resistance | Up to 150 °C | Up to 150 °C |
| Corrosion Resistance | Excellent | Excellent |
| Cost | Medium to High | Low |
| Best Uses | Powder, liquid, and slurry filtration | Tool clamping and light holding |
Q1: What’s the difference between magnetic bar separators and standard magnets?
Magnetic bar separators are integrated with housing and designed specifically for contaminant removal in process lines, with customizable strength up to 14,000 Gs or 16,000Gs.
Q2: How often should magnetic bars be cleaned?
Cleaning frequency depends on the ferrous content in the material stream. Easy-Clean designs or Automatic Design help minimize downtime.
Q3: Which core material is best for my process?
Ferrite suits larger ferrous particles; NdFeB captures micron-level impurities, and SmCo excels in high‑temperature environments.
Q4: Can magnetic bars fit in pipelines and hoppers?
Yes — they can be customized to match pipeline diameter, silo outlets, and conveyor transfer points.
⭐ NdFeB Ring Magnets — High‑strength magnetic rings for magnetic rollers and pulleys.
⭐ Plate Type Magnetic Separators — Flat grid magnets for bulk material de‑ironization.
⭐ Hopper Magnet Filters — Multi‑bar grid magnets for granular ferrous removal.
⭐ Magnetic Drawer Separators — Easy‑clean magnetic solutions for powders & granules.
| Magnetic strength | |||||||
| Diameter | 0.25T | 0.5T | 0.7T | 0.9T | 1T | 1.1T | 1.3T |
| Ø10 | √EH | √H | – | – | – | – | – |
| Ø16 | √EH | √EH | √EH | √H | √H | – | – |
| Ø19 | √EH | √EH | √EH | √H | √H | – | – |
| Ø20 | √EH | √EH | √EH | √SH | √H | √H | – |
| Ø22 | √EH | √EH | √EH | √EH | √EH | √H | – |
| Ø23 | √EH | √EH | √EH | √EH | √EH | √H | – |
| Ø25 | √EH | √EH | √EH | √EH | √EH | √EH | √H |
| Ø28 | √EH | √EH | √EH | √EH | √EH | √EH | √H |
| Ø32 | √EH | √EH | √EH | √EH | √EH | √EH | √H |
| Ø38 | √EH | √EH | √EH | √EH | √UH | √H | √H |
| Ø50 | √EH | √EH | √EH | √UH | √H | √H | √H |
| Ø76 | √EH | √EH | √EH | √H | √H | √H | √H |
| Ø100 | √EH | √EH | √H | √H | – | – | √H |
Notes: The listed values (120°C, 150°C, 180°C, 350°C) indicate the maximum operating temperature for each series.
We provide a wide range of customized magnetic bar ends to fit your specific installation needs. Whether you require Internal Threads (Female) for secure pipe mounting, Pointed Ends to divert material flow in gravity hoppers, or Tri-clamp ferrules for sanitary food processing, MAG SPRING has you covered.
Tube Materials: Standard 304 or 316L Stainless Steel.
End Configurations: Female/Male threads, Pointed tips, Eyelets, or Plain flat ends.
Thread Sizes: Metric (M6/M8/M10/M12) or Imperial (1/4″, 3/8″, etc.) available.
Finish: High-precision Mirror Polishing (Ra < 0.4μm) for food safety.
