CJC Filter Insert
High-Capacity Depth Filtration for Reliable Oil Systems
The CJC filter insert is the core of C.C.JENSEN’s offline oil filtration technology. Designed for maximum dirt-holding capacity and absolute filtration efficiency, it removes fine particles, water, varnish and oxidation by-products, ensuring clean, dry oil and stable system performance across demanding industrial applications.


Why contamination control is critical
Oil contamination is one of the leading causes of premature wear, unstable operation and unplanned downtime. Fine particles, water and degradation products circulate continuously, accelerating component damage and reducing oil lifetime.
CJC filter inserts address these challenges directly by removing contaminants that conventional inline filters cannot handle—protecting both oil and system components.
Typical contamination challenges include:
- Accelerated wear on pumps, valves and bearings
- Increased oil oxidation and acid formation
- Reduced system efficiency and higher maintenance effort
- Shortened oil and component lifetime


How the CJC Filter Inserts Works
CJC filter inserts are true depth filters, manufactured from specially processed cellulose discs. Oil passes through multiple filtration layers, capturing contaminants throughout the entire filter mass—not just on the surface.
Key technical principles:
Absolute filtration down to 3 microns
Extremely high dirt-holding capacity
Simultaneous removal of particles, water, varnish and acidity
Stable performance throughout the service life of the insert
This allows the filter insert to operate efficiently over long periods without pressure drop issues or bypassing.
What Makes a CJC Filter Inserts Different?
Depth filtration vs. pleated filters
Unlike pleated surface filters, a CJC filter insert captures contaminants throughout its entire structure. This results in:
Proven Results with an Acidity Removal Unit
Key Capabilities
Customer Benefits
High dirt-holding capacity for long service life
Fine particle removal down to 3 µm
Stable ISO cleanliness in real operating conditions
Continuous offline filtration without system interruption
Longer oil and component lifetime
Fewer unplanned stoppages and higher uptime
Reduced maintenance effort and service frequency
Lower total operating and maintenance costs
Proven Results with CJC® Filter Inserts
What customers typically achieve when using CJC® depth filter inserts in offline filtration systems.

ISO
Consistent removal of fine particles throughout the full service life of the filter insert, ensuring stable oil cleanliness in demanding applications.

2–5 x
Extended oil lifetime and longer service intervals by reducing particle-driven wear and oil degradation.

30–50%
Cleaner oil lowers component wear, unplanned downtime, and maintenance interventions - reducing total cost of ownership.

Stable
High dirt-holding capacity and stable filtration efficiency enable predictable performance and condition-based maintenance.
*Results depend on application, oil type, operating conditions, contamination levels, and other outside factors
Industries Using CJC® Filter Inserts for Oil Cleanliness Control
CJC® filter inserts are used across industries where particle contamination, water ingress, and oil degradation threaten reliability and performance.
Talk to a Filtration Specialist
Ensure the right filter insert is selected for your oil type, system design, and contamination challenges.