Pleated Filter Cartridges for Dust Collection Systems

Dust collector pleated filter cartridges provide the primary filtration stage in industrial dust extraction units, capturing airborne particulates before they reach the fan or downstream equipment. Their pleated geometry increases effective media area while maintaining a compact cylindrical footprint, allowing high airflow with manageable pressure loss.

Filtration Performance Characteristics

Typical cartridges achieve a filtration efficiency of 99.9% at 0.3 µm when tested according to ISO 16890, with a corresponding MERV rating of 15‑16 depending on media selection. The pressure drop across a clean cartridge at nominal airflow ranges from 120 Pa to 250 Pa, rising predictably as dust loading increases.

Media and Construction Materials

Filter media are selected based on the chemical and thermal environment of the application. Common options include spunbond polyester (rated to 120 °C continuous), PTFE‑laminated polyester (up to 200 °C), and aramid blends for hot‑gas streams exceeding 250 °C. The media is bonded to a perforated metal support core (usually galvanized steel or stainless steel) and sealed with urethane or thermoplastic end caps that incorporate a sealing gasket.

Design Geometry and Mechanical Stability

Pleat depth typically ranges from 20 mm to 30 mm, with pleat counts between 80 and 150 per cartridge depending on diameter. Standard outer diameters are 140 mm, 160 mm, and 200 mm, while lengths vary from 500 mm to 1500 mm. The pleated pack is designed to resist collapse under differential pressures up to 5 kPa, ensuring consistent airflow distribution throughout service life.

Typical Applications

• Woodworking shops – captures fine sawdust and prevents explosion‑risk accumulation.
• Metal grinding and polishing – handles metallic fumes and abrasive particles without rapid media blinding.
• Pharmaceutical powder handling – provides high efficiency containment of potent compounds.
• Food processing – meets hygiene standards with washable media options.

Quality Assurance and Testing

Each cartridge undergoes bubble point testing to verify pore integrity, airflow resistance measurement at defined flow rates, and burst strength evaluation under over‑pressure conditions. Dimensional checks confirm pleat uniformity and end‑cap concentricity within ±0.5 mm tolerances.

Technical Specifications

Customization Options

• Alternative end‑cap materials (e.g., stainless steel 316 for corrosive environments)
• Anti‑static or conductive surface treatment for explosive dust atmospheres
• Special gasket compounds (Viton, silicone) for high‑temperature sealing
• Pre‑coated media with oleophobic layer to resist oil mist
• Variable pleat height to adjust media area for specific pressure‑drop targets

Procurement, Lead Time and Support

Standard cartridges are typically available from stock within 10‑15 working days for diameters up to 200 mm. Custom geometries or special media require additional engineering review, with lead times ranging from 4 to 6 weeks. Technical datasheets, CAD models, and sample units can be provided upon request to facilitate fit‑validation.

Frequently Asked Questions

Contact for Technical Inquiry

For further specifications, sample requests, or application‑specific engineering support, please reach out via the contact form.