Product Overview
Part 6.4334.0 (also marked 6.4334.0/G1) is spin‑on screw‑in coalescing oil separator cartridge for Kaeser SX‑series and Airtower‑C compact flooded screw compressors. Its core job is capturing sub‑micron oil mist after primary centrifugal separation, lowering residual oil content in compressed‑air output and reducing frequent lubricant top‑up work.
A very well‑known maintenance pitfall on these compact Kaeser units: installing brand‑new separator cartridge but still suffering oil carry‑over. In most cases this is NOT caused by defective separator. The tiny siphon return tube inside separator housing gets blocked by carbon sludge, and separated oil cannot flow back into compressor oil circuit. This hidden fault is frequently overlooked by maintenance technicians.
Running beyond service reference hours or ignoring rising differential pressure will blind glass‑fiber media. Consequences include high oil consumption, oil stain defects for painting / food‑grade production, premature failure of downstream filters. Timely replacement of 6.4334.0 cartridge protects your whole compressed‑air station.
★Important Note: This is coalescing separator for oil‑injected screw compressor. It cannot deliver ISO 8573‑1 Class‑0 oil‑free air; Class‑0 rating applies for oil‑free compressor hardware only. Service hour figure is reference value under clean indoor operating environment.
Compatibility & Critical Pre‑Order Verification
Manufacturer Part Number：6.4334.0 / 6.4334.0/G1
Applicable Compressor：Kaeser SX3, SX4, SX5, SX7.5 and Airtower‑C series (2008 model revision)
Critical Reminder:
Do not confirm fitment only by third‑party catalog number. Earlier / later revision SX variants may adopt different separator cartridge. Please send your compressor name‑plate / serial‑number for our technical cross‑verification before placing order, avoid wrong‑part shipment and production downtime.
Service‑life Reference Guidance
•Clean indoor workshop：Up to 5200 operating hours (reference only)
•Dusty, textile, high‑humidity workshop: Shorten replacement cycle down to 3000‑3800 hours
•Mandatory replacement when separator differential‑pressure reaches OEM alarm threshold, regardless of accumulated runtime.
Core Functional Benefits
1. Control residual oil mist for downstream production quality
Multi‑layer imported glass‑fiber coalescing media traps sub‑micron oil aerosol. Properly‑working 6.4334.0 keeps residual oil within typical 2‑3ppm under nominal full‑load condition, preventing oil‑stain defects for painting, general manufacturing and pneumatic equipment.
2. Low‑restriction media to control energy consumption
Optimized pleated glass‑fiber layout keeps initial pressure‑drop low. As contaminants build‑up inside separator, differential pressure rises and compressor draws extra power. Timely cartridge replacement keeps energy cost within design baseline.
3. Integrated sealing for spin‑on installation
Built‑in rubber gasket matches original housing thread profile. Never reuse old gasket. Re‑aged gasket will create bypass gap and defeat separator performance even with brand‑new cartridge.
4. Resistance against carbon‑sludge impact
Media and end‑cap structure tolerates normal oil‑carbon contaminant existing inside compact Kaeser SX / Airtower‑C compressor cabinet.
5. Direct drop‑in spin‑on replacement
Identical thread dimension as OEM cartridge. No housing modification required during maintenance swap‑out.
Technical Specification
| Parameter | Value |
|---|---|
| Part Number | 6.4334.0 / 6.4334.0/G1 |
| Type | Spin‑on screw‑in coalescing oil separator cartridge |
| Filter Media | Multi‑layer imported glass‑fiber |
| Typical residual oil content | 2‑3 ppm (nominal full‑load condition) |
| Initial differential pressure | ≤0.02 MPa |
| Operating temperature | ‑10°C ~ +60°C |
| Reference Service Life | Up to 5200hrs (clean indoor environment reference) |
| MOQ | 1 Piece |
| Shipment Option | DHL/FedEx/UPS express, air freight, sea freight |
| Payment Terms | T/T, PayPal, Western Union, Visa |
| Customization | Custom separator element solution available upon inquiry |
Typical Application Scenarios
This 6.4334.0 spin‑on separator serves factories operating matched Kaeser SX3‑7.5 and Airtower‑C compact screw compressors:
♦General manufacturing & metal‑working workshops
♦Automotive painting and repair shops
♦Food & beverage small‑batch processing lines
♦Electronic component assembly workshops
♦Plastic processing workshops
If you observe high oil consumption, oil residue at compressed‑air outlet, or separator differential‑pressure approaching alarm limit, arrange separator inspection and replacement. Also check siphon return tube condition during every separator service.
On‑Site Installation & Post‑Replacement Guidance
Safety Reminder: Perform complete LOTO lock‑out‑tag‑out procedure. Fully shut‑down compressor, release all tank pressure, wait full cooling before disassembly. Hot lubricant can cause burn injury.
1. Pre‑installation inspection, critical siphon‑tube check
Depressurize and cool compressor. Unscrew old separator cartridge.
※Most‑ignored step: Inspect small siphon oil‑return tube / orifice inside housing. Clear carbon‑sludge blockage. Blocked siphon tube will cause oil carry‑over even with brand‑new separator.
Clean housing thread face. Discard old rubber gasket completely.
2. Spin‑on installation procedure
Fit new supplied rubber gasket onto new 6.4334.0 cartridge. Hand‑screw the cartridge clockwise until gasket makes firm contact against sealing face, then tighten additional 1/4‑1/2 turn by hand / wrench.
►Do NOT apply fixed heavy torque value. Over‑tightening will crack cartridge end‑cap or strip housing thread.
3. Post‑start‑up observation Restore all panels. Start compressor and run under full‑load condition for 30‑60 minutes.
•Record baseline separator differential‑pressure reading;
•Inspect thread joint for oil seepage;
•Monitor compressed‑air oil‑carry‑over performance.
4. Sigma Control service‑timer reminder After separator replacement, you need to enter maintenance password inside Sigma‑Control panel to reset separator service counterManualsLib. Simple button press without password cannot complete timer reset. Please refer to Kaeser original service manual for controller operation steps.
5. Troubleshooting hint If oil‑carry‑over still exists after new separator installation, do not judge cartridge defective immediately. Re‑inspect siphon return tube, oil filling level inside compressor, minimum‑pressure valve function.
Real Customer Reviews
Frequently Asked Questions
Q1: I fitted brand‑new 6.4334.0 separator, but Kaeser SX compressor still carries oil. What is top cause?
A: Very often the small siphon oil‑return tube inside separator housing is blocked by carbon sludge. Separated oil cannot flow back to oil sump. Clean siphon passage before mounting new separator cartridge.
Q2: Shall I replace separator strictly at 5200 running hours?
A: 5200‑hour is reference under clean indoor environment. Dusty or humid workshop shortens practical service life. Separator differential‑pressure alarm threshold takes higher priority than runtime counter.
Q3: Can I clean and reuse spin‑on separator 6.4334.0?
A: Not recommended. Air‑blasting only removes surface dust, while coalescing glass‑fiber layer gets invisible micro‑damage. Re‑used cartridge brings hidden oil‑bypass risk, full replacement is required.
Q4: Does 6.4334.0 fit all Kaeser SX compressors?
A: It applies to SX3‑7.5 and Airtower‑C (2008 model). Earlier or later hardware revisions may use different part numbers. Send compressor serial‑number for our compatibility cross‑check before ordering.
Q5: Why can't I reset Sigma‑Control service timer with simple button clicks?
A: Kaeser Sigma‑Control requires maintenance‑level password to modify service interval counter. Check original operator manual for reset workflow.
Why Buy 6.4334.0 Separator From Us
•Pre‑order compatibility check: Send compressor serial‑number, our technical team double‑check fitment to avoid wrong‑part shipment.
•Pre‑shipment visual inspection: Check media integrity, gasket and thread condition before packing; inspection video available for bulk orders.
•Flexible global logistics: Fast express for emergency breakdown maintenance; sea‑freight solution for bulk project procurement.
•Technical support: If you face oil‑carry‑over or compressor troubleshooting confusion, share equipment name‑plate info and we offer spare‑part reference suggestion.
Request Quote for 55135170200 Now
Fill inquiry form with compressor serial‑number, required quantity and destination country, our sales engineer will reply quotation and lead‑time quickly.
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