Reclaim your oils and fluids, no matter how heavily contaminated they are with water and particles

CJC® D40CU Desorber Filter Unit: Your solution for complete oil recovery

Desorber-Filter-Unit D40CU, oil recovery
Desorber-Filter-Unit D40CU, oil recovery

Desorber-Filter-Unit D40CU

The D40CU desorber filter unit quickly and efficiently reduces the water content in your oils and fluids to < 0.01% while minimizing the content of particles and oxidation products (acids, sludge, varnish). Whether hydraulic oil, transmission oil, lubricating oil, machining oil, leakage oil or hardening oil, and whether mineral oil or synthetic fluid, the D40CU desorber filter unit separates even stable oil-water emulsions with a water content of 70% and enables the complete recovery of oils and lubricants. Installed in an independent bypass stream or on a freestanding tank, the D40CU dewaters and cleans the oil (24/7). Dewatering during oil recovery is carried out by desorption. Ideal even for highly viscous oils and airborne oils. Desorption does not affect the additive package.

How to benefit from your CJC® Desorber Filter Unit D40CU

  • You remove all impurities from the oil in one process — water, particles and oxidation residues

  • You rejuvenate the oil and prevent the additive loss, acids and the spread of microorganisms

  • You ensure maximum corrosion and wear protection for all oil-lubricated machine components

  • You extend the service life of oil and machine components by 3 to 4 times

  • You reduce unplanned downtime and maintenance costs while protecting environment and resources

Keeping oils and fluids as clean and dry as possible is the be-all and end-all for reliably functioning machines and smooth processes.

Application areas & installation example Desorber-Filter-Unit D40CU

Especially in the paper, steel, plastics and metal processing industries, as well as in maritime applications, there is a high risk of water entry into the oil systems due to environmental and process conditions.

Installation, Desorber-Filter-Unit D40CU, oil recovery

Fine filter system:
The pump in the oil inlet sucks in the oil. In the first stage, the fluid flow passes through the filter with the integrated fine and depth filter cartridge before it is fed into the desorber chamber in the second stage. Water but also particles in the oil accelerate the degradation of base oil and additives (oil ageing). The filter removes particles and already by oil degradation processes formed reaction products.

In the desorber chamber, the still moist, warm oil meets a counterflow of cold, dry air. The oil heats the cold air, which allows it to absorb a lot of moisture (system pressure constantly low < 2 bar). In a subsequent process, the warm, moist air cools down again, and the water condenses.

  • Hydraulic and hydrostatic systems
  • Gearboxes and lubricating oil systems
  • Oil recovering:
    • Machining oil
    • Leakage oil
    • Quenching oil
  • Mineral oil
  • Bio oil / environmentally acceptable lubricants
  • Ester
  • PAG (Poly Alpha Glycol)
  • PAO (Poly Alpha Olefin)
  • other synthetic fluids

Features — Desorber-Filter-Unit D40CU

Desorber-Filter-Unit D40CU, oil recovery

Oil volume, dimensioning e.g.: 25,000 Litres

Installation: flexible, e.g. in the off-line circuit or on a free-standing tank

Viscosity range: up to ISO VG 1000

Water content in the oil, max.: 700,000 ppm (70%)

Water separation: water content permanently < 100 ppm (0.01%)

Dirt holding capacity: up to 192kg

Filtration degree, max.: 3 μm absolute to 1 μm

Fine and depth filter cartridge: 16 pieces

Supply voltage: 3 x 525 V at 50-60 Hz or 3 x 440/460 V at 50-60 Hz

Power consumption: 7-25 kW

Current: 36 A

Conveying capacity (24/7): 1,400 litres per hour

System pressure (suction side), max.: 0.5 bar

Dimensions – Desorber, L x W x H: 1,600 x 1,100 x 1,900 mm

Weight – desorber, approx.: 920 kg

Dimensions – fine filter system, L x W x H: 850 x 850 x 1,597 mm

Weight – fine filter system, approx.: 772 kg



  • Pump with motor
  • electrical control with integrated alarm reporting system (e.g. pressure and leakage sensors)
  • Leakage monitoring
  • Continuous air vent
  • Sample point for oil or fluid analysis
  • automatic water separation


  • Air, water or coolant cooling
  • Independent placement of the filter pump for flexible integration into your machine room

Download product data sheet:

All sizes and variants — without and with depth filter

Desorbers and Desorber Filter Units, D40CU, Oil Recovery

That say our customers

Hydrostatische Systeme

“I am completely satisfied with the investment. Oil recovery takes place very quickly and without plant downtime. Thus, we maintain production, have time to look for the error, save ourselves the oil change and disposal and maintain the oil quality.”

Read customer case

Head of Maintenance, Liebherr Components

The Desorber works excellently in this application. I was impressed by the results and surprised how efficiently the Desorber dewatered the oil. The Desorber is easy to operate and is low-maintenance.”

Read customer case

Engineer, Quenching plant
gear oil maintenance, thruster, harbour tug

The CJC® Desorber allows us to operate the tug boat until the regular inspection in the dry dock in 6 months. The oil analysis results speak for themselves and substantiate the efficiency of the Desorber.

Read customer case

Regional Technical Manager, Harbour tug boat „VB PORNIC“
Gear oil filtration, thrusters, harbour tug

“It was only with the Desorber that the gear oil could finally be dried satisfactorily. Without CJC®, we would have had to change the 1,500 litres of gear oil soon. By avoiding the oil change, we were able to save EUR 4,890 (EUR 3.26/litre) – an important contribution not only in terms of budget but also in terms of resource savings. The excellent results convinced us, so we decided to purchase two identical Desorbers for our tug boats, “Bugsier 5” and “Bugsier 6”.

Read customer case

Technical Superintendent, Harbour tug boat „BUGSIER-4“
mv island scout,

“The Desorber is ideal for such operations because it works continuously while the vessel is at sea. The results are very satisfactory. The Desorber works very well and will further reduce the water content.”

Read customer case

Technical Inspector, Supply vessel „ISLAND SCOUT“

Write or call your regional contact person now

Let us start a conversation about your system, your oil, and the specific challenges. We are your experts in oil and lubricant recovery. With us you achieve the highest oil cleanliness.

Receive a personal consultation and a non-binding offer for a CJC® Desorber-Filter-Unit D40CU.

Write or call us.

oil samplels without and with cjc, oil dewatering, desorber
oil samplels without and with cjc, oil dewatering, desorber
oil samplels without and with cjc, oil dewatering, desorber