Stainless Steel Magnetic Filter Grid

Structure and Materials

 

Every Stainless Steel Magnetic Grate Separator manufactured by MagnetGlobal is constructed using a heavy-duty stainless steel support frame paired with multiple high-intensity magnetic rods. Each integrated rod consists of a seamless, heavy-wall stainless steel tube enclosing an internal, high-performance permanent magnetic core. The magnetic bars are aligned in a parallel layout at precisely calculated geometric intervals to optimize the balance between material flow velocity and magnetic capture depth. The specific spacing between these bars can be fully customized according to the particle characteristics of your material, whether handling fine cohesive powders, free-flowing granules, or large bulk materials. For extreme purity requirements, multi-layer staggered configurations are available to provide complete, gap-free magnetic coverage across the entire material stream. These standard magnetic grills are heavily utilized across global industries, typically installed directly at the gravity feeding inlets or discharge outlets of injection molding machinery, industrial dryers, hoppers, and automated material handling equipment.

 

Working Principle

 

The magnetic grate projects a dense, uniform magnetic field across the entire cross-section of the material flow through an array of high-flux permanent magnetic tubes. As raw material drops or flows through the grid by gravity or pneumatic pressure, ferrous contaminants — rust particles, iron filings, and fine mechanical wear — are drawn to the rod surfaces and held there on contact. This physical capture mechanism isolates metallic contamination from the active product stream, protecting final product purity and preventing blockages or damage to downstream equipment.

 

 

Features and Specifications

 

• Frame and rod material: SUS304 or SUS316L stainless steel, selected according to chemical resistance requirements
• Mechanical durability: Rigid construction withstands continuous material impact and equipment vibration without deformation
• Power requirement: None — fully passive permanent-magnet design, eliminating electrical failure risk and wiring/control cabinet costs
• Surface Gauss rating: 6,000–14,000 Gauss, depending on rod grade and configuration
• Flow resistance: Cylindrical rod profiles minimize resistance and prevent material stagnation; streamlined or teardrop-shaped rods available on request for high-viscosity or sticky materials
• Operating temperature: Standard ≤80°C; high-temperature cores available up to 350°C; custom ratings available on request
• Cleaning method: Available in Regular (manual wipe-down) or Easy-Clean (faster-release design for reduced downtime) configurations

 

Technical Parameters and Flexible Specifications

 

Our standard product line includes versatile models such as the MG-100 for laboratory or low-flow applications up to the heavy-duty MG-300 designed for continuous high-output production lines and high-contamination environments. The grate diameters range from 100 millimeters to 300 millimeters, housing between 3 and 13 high-intensity pipes across dual layers. These models accommodate hopper capacities from 12 kilograms up to 250 kilograms and are compatible with inlet diameters spanning 140 millimeters to 600 millimeters. While standard models utilize cylindrical magnetic bars, specialized streamlined or teardrop-shaped profiles can be integrated upon request to further minimize material resistance and eliminate flow stagnation.

 

Model	Grate Diameter	Magnetic Rod Diameter / Quantity	Number of Layers	Surface Gauss	Hopper Capacity (kg)	Compatible Inlet Diameter (mm)	Application Scenario
MG-100	D100 mm	Φ25 / 3 pipes	2	6000–14000	≤12	≤Φ140	Laboratory use, small equipment, low material flow
MG-150	D150 mm	Φ25 / 5 pipes	2	6000–14000	12–25	Φ140–200	Small to medium production lines, standard granular materials
MG-190	D190 mm	Φ25 / 7 pipes	2	6000–14000	25–75	Φ200–300	Medium production lines, moderate ferrous contamination
MG-240	D240 mm	Φ25 / 9 pipes	2	6000–14000	75–150	Φ300–400	Medium to large production lines, medium to high flow / fine powder
MG-270	D270 mm	Φ25 / 11 pipes	2	6000–14000	150–200	Φ400–500	Large production lines, high flow rate / fine powder
MG-300	D300 mm	Φ25 / 13 pipes	2	6000–14000	200–250	Φ500–600	Continuous production with high output capacity, high-contamination environments

Rod counts shown reflect the total across both layers; standard models use cylindrical rods, with streamlined or teardrop profiles available on request.

 

 

 

Key Advantages

 

1. High-Strength, Full-Coverage Capture

Surface field strength of 6,000–14,000 Gauss captures not only coarse ferrous debris like scrap and nails, but also fine iron powder and weakly magnetic stainless steel particles. Precise rod spacing ensures the magnetic field covers the entire flow cross-section with no gaps for contaminants to slip through — a meaningful efficiency advantage over conventional single-row separators.

 

2. Zero Running Cost

As a fully permanent-magnet system, the grid consumes no electricity and has no consumable parts to replace. Magnetic field strength remains stable with minimal decay even after 5–10 years of continuous service. Standard (Regular) units clean with a simple manual wipe-down, while Easy-Clean configurations are designed to reduce downtime further for lines requiring frequent servicing.

 

3. Flexible, Non-Invasive Installation

Available in suspended, drawer-type, and insert-style configurations, the grate can be fitted directly at hopper outlets, pipeline sections, or conveyor discharge points without welding, cutting, or modifying existing equipment.

 

4. Built for Continuous Duty

The stainless steel frame is engineered to absorb constant material impact and equipment vibration without structural fatigue, supporting uninterrupted 24/7 operation across demanding production environments.

 

5. Wide Operating Range

Standard units operate to 80°C, with high-temperature cores rated to 350°C for installation near dryers or extrusion lines. Cylindrical rod profiles keep flow resistance low across a wide range of material viscosities.

 

6. Low Flow Resistance and Wide Temperature Range

Cylindrical magnetic rods (teardrop-shaped rods also available on request) feature smooth surfaces that reduce material resistance and prevent blockages.
Standard operating temperature is ≤80°C, with a maximum of 350°C. Customized temperature ratings are also available based on specific material conditions.

 

Application,s Target Applications and Industrial Value

 

These high-performance Stainless Steel Magnetic Filter Grids provide essential contamination control across the plastics, food processing, pharmaceutical, chemical, animal feed, and agricultural grain industries. They excel at processing fine powders, granular aggregates, and industrial liquids, offering a critical line of defense that protects expensive processing screws, pumps, millers, and screens from costly mechanical damage. By continuously eliminating ferrous materials, these separators significantly extend the operational life of your manufacturing assets while guaranteeing that your final product meets the highest international quality and purity standards.