The FM400 centrifugal oil filter adopts filter-element-free centrifugal separation technology. Driven by oil pressure, its rotor rotates at high speed to capture ultra-fine metal wear particles and carbon deposits below 1μm, greatly extending lubricant service life and cutting overall equipment operation & maintenance costs.
1. Product Description
The FM400 centrifugal oil filter adopts filter-element-free centrifugal separation technology. Driven by oil pressure, its rotor rotates at high speed to capture ultra-fine metal wear particles and carbon deposits below 1μm, greatly extending lubricant service life and cutting overall equipment operation & maintenance costs.
Equipped with a large 4-liter dirt holding chamber, it matches medium-to-large lubrication systems with an oil capacity of 200–1500L. No frequent filter element replacement is required, bringing near-zero long-term consumable expenses.
Featuring a quick-opening clamp sealing structure, one single operator can disassemble and clean the unit within 3 minutes, making it suitable for 7×24h continuous heavy-duty operations on vessels, generator sets and construction machinery.
Internal Structure Sectional View
2. Specifications Table
| Item | Technical Parameter |
| Model | FM400 (FM400-23) |
| Filtration Principle | Oil-pressure driven centrifugal separation, no filter media required |
| Rated Flow Rate | 55L/min |
| Rotor Dirt Holding Volume | 4L |
| Rotor Oil Storage Volume | 4.5L |
| Matched Lubrication System Volume | 200–1500L |
| Operating Oil Pressure Range | 3–7bar, optimal working pressure: 6bar |
| Max Rotation Speed of Rotor | 4500–5000r/min |
| Minimum Inlet Pipe Inner Diameter | 19mm |
| Filtration Precision | Separates solid particles above 1μm |
| Main Material | Die-cast aluminum base + anti-corrosion coated carbon steel housing |
| Net Weight | 22kg |
| Overall Dimension | Height: 401mm, Max Outer Diameter: 294mm |
| Sealing Method | O-ring quick-release clamp sealing |
| Compatible Oil Types | Diesel engine oil, hydraulic oil, gear oil, turbine oil |
3.Key Features
Zero filter element consumption, drastically reduce long-term costs
Impurities are separated via centrifugal force without paper or metal filter elements. Only regular rotor flushing is needed, eliminating continuous filter purchasing expense. It can save over 70% of lubrication filter consumable costs within 3 years.
Large dirt holding capacity, extended maintenance intervals
4-liter large-capacity dirt collection chamber doubles the cleaning cycle compared with smaller FM200 model under identical working conditions, minimizing shutdown maintenance frequency and guaranteeing continuous equipment operation.
Micron-level deep purification to protect engine components
Captures ultra-fine wear debris, oil sludge and carbon deposits as small as 1μm, reducing abrasion on cylinder blocks, bearings and oil pumps, and prolonging engine overhaul cycles.
Quick-open clamp design for time-saving & labor-free cleaning
Side locking quick-release clamp requires no extra tools; operators can open the cover and remove dirt rapidly, cutting disassembly & assembly time by 80% versus traditional bolt flange designs.
Anti-corrosion & durable for full-range harsh working environments
Electrostatic anti-rust coating on housing and oil-resistant die-cast aluminum base deliver excellent resistance to seawater salt spray, high temperature and vibration, perfect for heavy-duty scenarios including ships, mining and power plants.
4. Customization Options
Port Customization: Import & export thread (G/PT/NPT) flange, extended base pipelines, modified side/bottom oil outlets
Appearance Customization: Custom housing color, printing customer enterprise LOGO, personalized brand nameplates
Working Condition Adaptation: Low-flow LF version, high-temperature oil-resistant seal kits, upgraded explosion-proof housing
Optional Accessories: Visual inspection sight glass, pressure monitoring port, integrated installation bracket
Packaging Customization: Neutral unbranded export package, exclusive customer color boxes, pallet packaging solutions
Marine Shipping Industry: Main & auxiliary marine diesel generators, marine gearboxes, marine hydraulic lubrication systems, heavy fuel oil power units
Generator Sets: Large diesel power stations, biogas generators, industrial standby generator lubricant purification
Construction Machinery: Large mining trucks, tunnel boring machines, loaders, tracked heavy equipment lubrication systems
Industrial Power Equipment: Steam turbines, air compressors, large hydraulic stations, gear reduction units
Energy Industry: Offshore platform power units, oilfield diesel power equipment, underground mining power machinery
The FM400 centrifugal filter has passed multiple internationally authoritative certifications, complying with global industrial and marine equipment access standards:
Marine Classification Society Approval: Type approval by CCS China Classification Society and BV Bureau Veritas, eligible for domestic and overseas marine supporting export.
Quality Management System: ISO9001 international quality system certification, standardized full-process production control.
Material Test: Third-party salt spray test reports for aluminum alloy and housing anti-corrosion coating to resist marine corrosion.
Mechanical Safety: Full machine pressure resistance and dynamic balance safety test certificates, suitable for continuous 7bar oil pressure working conditions.
Export Compliance: Customs self-operated import & export filing, RoHS eco-friendly material testing, fully compliant for EU market access.
Minimum Order Quantity
Standard stock version: MOQ 1 unit for retail price; bulk discount available for orders ≥5 units; factory direct special price for orders ≥100 units.
Custom modified models: Minimum order quantity 10 units, production lead time 15–20 working days.
Packaging Solution
Single unit package: Shockproof thick foam inner lining + fumigated solid wooden case, waterproof, moisture-proof and rust-proof.
Full container bulk shipment: Palletized packaging reinforced with steel bands, ideal for sea freight export.
Standard package accessories: Installation manual, spare O-rings, cleaning tools, warning labels.
We are an original manufacturer with 12 years of experience in centrifugal filtration equipment, manufacturing products matching Mann Hummel original standards. Equipped with full CNC production lines, our monthly output exceeds 10,000 units, supplying marine and power equipment manufacturers worldwide stably.
Complete quality inspection process: Each unit undergoes pressure resistance testing, rotor dynamic balance calibration and water immersion leakage test before delivery to eliminate oil leakage and rotor shaking failures.
Full export support: Self-operated import & export rights, proficient in sea freight and customs clearance document preparation. We provide Certificate of Origin, commodity inspection documents and support FOB/CIF/EXW trade terms.
Professional technical after-sales team: 24/7 online support for model selection guidance and installation commissioning solutions. Remote technical support is available for overseas projects, with a 12-month warranty for the whole machine.
Ready stock warehouse: Full range standard inventory for FM200/FM400/FM600 series. Standard stock orders ship within 3 working days, priority production for rush orders.
Q1: How to select between FM200, FM400 and FM600 models?
A: FM200 fits small engines with lubrication volume under 200L; FM400 matches medium & large lubrication systems of 200–1500L with balanced flow rate and compact size; FM600 is designed for ultra-large capacity units over 1500L and heavy fuel oil marine main engines. You can select directly based on your total engine oil volume.
Q2: Does this filter require replacement filter elements? How often should I clean it?
A: No traditional filter elements are needed; impurities are separated via centrifugal force. For standard diesel generator sets, clean and flush the rotor every 2000–3000 operating hours. For marine heavy fuel oil working conditions, cleaning every 1000–1500 hours is recommended.
Q3: Are there requirements for installation oil pressure? Will the rotor stop spinning if pressure is insufficient?
A: Minimum startup oil pressure is 3bar, and 6bar delivers optimal filtration performance. If pressure drops below 3bar, rotor speed will decrease and filtration efficiency will decline. We suggest installing a pressure regulating valve on the pipeline to stabilize oil pressure.
Q4: Can this unit replace original Mann Hummel FM400? Are spare parts interchangeable?
A: Dimensions, flow rate and mounting ports are fully interchangeable with OEM FM400. Sealing O-rings and rotor spare parts are universal, with filtration performance equivalent to original brand while cutting your procurement costs significantly.
Q5: Can you supply neutral unbranded export packaging? What is the production lead time?
A: Neutral logo-free packaging and customer OEM branding are supported. Standard stock orders ship within 3 working days; customized modified models take 15–20 working days, and we can arrange production schedules to match your full-container shipment plan.
Q6: What is the warranty period? How to solve oil leakage issues?
A: The whole machine comes with a 12-month warranty; free spare parts will be provided for non-artificial damage. Oil leakage is usually caused by aged O-rings or loosely locked clamps. Spare sealing kits are included with each shipment, and our after-sales team will offer remote step-by-step guidance for fast troubleshooting.
Q7: Can this filter process hydraulic oil, diesel engine oil and gear oil simultaneously?
A: Yes, it is compatible with all mineral lubricating oils and hydraulic oils. However, we recommend using an independent filter for each oil type to avoid cross-contamination of impurities between different lubricants.
