EL 27/27 Ion Exchange CJC Insert

CJC® Ion Exchange Filter Inserts are used to neutralise acidic compounds in oil systems where oxidation, thermal stress, or water contamination has led to increased acidity. Acidic oil conditions can accelerate corrosion, promote deposit formation, and significantly reduce lubricity and component life.

These inserts work through adsorption of acidic compounds from the oil and are designed to be used in conjunction with a CJC® Type A or Type B filter insert, ensuring both contaminant removal and chemical stabilisation of the oil.

Insert Construction and Function

Ion exchange inserts consist of a polyester needle felt bag filled with specialised neutralising media such as:

• Granulated fuller’s earth

• Activated alumina

• Ion-exchange resin beads

Each material offers specific neutralisation characteristics depending on oil type, operating conditions, and acidity level.

Types of CJC® Acidity Neutralisation Inserts

CJC® EC Filter Inserts

• Made from fuller’s earth / Attapulgus clay

• A natural material used for acidity neutralisation by CJC® since 1966

• Effective for reducing acidic compounds caused by oxidation and hydrolysis

CJC® EO Filter Inserts

• Manufactured from aluminium oxide

• A synthetic neutralisation medium first introduced in 1970

• Suitable for applications requiring strong adsorption of acidic compounds

CJC® EL Filter Inserts

• Consist of ion-exchange resin beads

• Polymeric neutralisation resins designed for targeted acidity reduction

• Used where precise chemical neutralisation is required

Application Guidance

Selecting the correct CJC® ion exchange insert requires an evaluation of:

• Oil type and condition

• Acidity level (TAN)

• Operating temperature and contamination sources

For this reason, selection should always be carried out in dialogue with C.C.JENSEN or a local CJC® supplier to ensure optimal performance and system protection.