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Large-scale mining and processing facility, illustrating how clean oil and advanced oil filtration improve equipment reliability, reduce maintenance needs, and extend machinery lifetime in demanding mining operations.

Reliable mining equipment begins with clean oil

Increase production output, lower maintenance costs, and extend machinery life

Mining processing plant with conveyors and crushing equipment, where clean oil and continuous oil filtration protect hydraulic and lubrication systems in heavy-duty mining environments.

Increase equipment availability, cut maintenance costs, and extend component life

Fine dust, water ingress and high thermal loads rapidly degrade hydraulic and lubrication oils in mining equipment, causing abrasive wear, varnish formation, valve malfunctions and costly unplanned stoppages.



CJC® Offline Oil Filtration removes the root causes of failure by continuously cleaning oil of particles, water and oxidation residues. The result is more stable equipment performance, longer oil and component life, and improved uptime across the mine.


The real cost of contaminated oil in mining operations

Consequences include:

Power button symbol representing start, stop, or system activation.
Unplanned equipment stoppages

Contaminated oil causes sticking valves and pump failures that lead to sudden and costly downtime.

Gear with exclamation mark representing system warning or critical condition.
Shortened component life

Abrasive particles accelerate wear on pumps and gears, reducing service life and increasing replacements.

Valve symbol representing fluid control and system flow regulation.
Control instability and sticking valves

Oxidation and varnish restrict valve movement, creating slow system response and inconsistent operation.

Spanner symbol representing servicing and equipment maintenance.
High maintenance hours and spare part use

Dirty oil drives frequent oilchanges, repairs and higher spare-part use, increasing labour time and maintenance budgets.

Currency symbol representing cost, savings, or financial value.
Higher energy use and operating costs

Contamination raises friction and heat in the system, making equipment work harder and increasing expenses.

Across mobile fleets and fixed plant, the reliability of mining equipment depends on the condition of the oil circulating through hydraulics, gearboxes and lubrication systems. Yet in many sites, oil is still treated as a consumable rather than a performance asset. In reality, contamination accumulates daily - fine dust, water and oxidation residues quietly turning hydraulic and lubrication fluids into carriers of wear, heat and inefficiency.

Mining engineers reviewing equipment data on site, supporting clean oil strategies and effective oil filtration to improve reliability and reduce downtime in remote mining operations.

Let our experts help you decide

Get a tailored assessment of your oil condition

and keep your equipment running reliably

Oil filtration that keeps your mining operation running

Offline filtration that removes dust, water and oxidation residues to keep mining equipment efficient and reduce unplanned stops.

Key operational benefits

Longer component and equipment life - Clean, dry oil reduces wear on pumps, valves and gears, extending service life across mobile and fixed assets.

Fewer unplanned stops and failures - Stable oil cleanliness prevents sticking valves, pump breakdowns and gearbox issues that interrupt production.

Lower maintenance cost and spare-part use - Reduced contamination lowers filter consumption, repair frequency and replacement of high-value components.

Higher equipment efficiency and energy stability - Clean oil maintains proper lubrication, cooler operation and consistent system performance under heavy mining loads.

Mining technician comparing contaminated and clean oil samples, demonstrating the importance of effective oil filtration for maintaining oil cleanliness in heavy-duty mining equipment.

Reduced oil consumption and waste generation

Cleaner oil stays in service far longer, avoiding frequent oil changes and reducing waste oil volumes, a clear environmental gain documented in multiple heavy-duty applications.

Open-pit mining operation with haul trucks and heavy equipment, where clean oil and advanced oil filtration protect engines and hydraulic systems in harsh mining conditions.

Longer equipment and component lifetime

Stable oil conditions reduce wear on pumps, valves, bearings and gears, lowering the need for new parts and the environmental impact tied to manufacturing and transporting replacements.

Close-up of lubricated gears in heavy machinery, illustrating how clean oil and high-performance oil filtration reduce wear and extend component lifetime in mining equipment.

Hydraulic System, New Zealand

A hydraulic system affected by valve failures and high contamination installed a CJC® Fine Filter, achieving cleaner oil and eliminating servo valve issues. The improvement reduced downtime and delivered substantial savings in parts and maintenance. Read more

Fewer unplanned repairs and maintenance activities

Cleaner systems reduce breakdowns and corrective maintenance, cutting the fuel, logistics and material footprint associated with emergency interventions.

Applications across your mining operations

Mining haul trucks operating in an open-pit environment with crusher and conveyor systems, where clean oil and deep oil filtration protect gearboxes from abrasive wear and extend service life.
Mining and processing facility surrounded by forest, representing how clean oil and advanced oil filtration improve equipment reliability and support cost-effective maintenance in demanding mining operations.

"I can only recommend the use of CJC™ oil filters – as it helps us saving money on our maintenance budgets."


Maintenance Manager

Cement Mill Gearbox, Denmark

A heavily loaded cement mill gearbox experienced recurring contamination that drove up maintenance costs. With CJC® offline filtration installed, particle levels were reduced significantly, helping extend oil life and improving long-term gearbox performance. Read more

Large mining haul truck transporting ore in an open-pit mine, illustrating how clean oil and effective oil filtration protect engines and hydraulic systems in heavy-duty mining operations.

"We have made huge savings on the components and labour along with mill downtime.”


– Operations Supervisor

Hydraulic System, New Zealand

A hydraulic system affected by valve failures and high contamination installed a CJC® Fine Filter, achieving cleaner oil and eliminating servo valve issues. The improvement reduced downtime and delivered substantial savings in parts and maintenance. Read more

Mining material handling and crushing area with conveyors and aggregate, representing how clean oil and high-efficiency oil filtration remove fine particles and protect equipment in harsh mining environments.


“We removed 99.9% of the dirt. The filter still hasn’t blocked. Amazing.”


– Maintenance Planner

Coal Mill Gearbox, Ireland

A coal mill gearbox struggling with heavy particle contamination installed a CJC® Fine Filter, quickly restoring oil cleanliness and stabilising wear levels. Continuous filtration kept the system clean, reducing maintenance effort and improving reliability. Read more

Mining haul trucks operating in an open-pit environment, representing industry standards and compliance supported by clean oil, verified oil cleanliness levels, and effective oil filtration in heavy-duty mining equipment.

Standards & compliance checklist

ISO 4406 particle cleanliness codes

OEM cleanliness targets

Water content limits verified by Karl Fischer testing

Varnish potential (MPC / Membrane Patch)

Wear metals & particle trend monitoring

Oil condition reporting aligned with ASTM/ISO test methods

Why choose C.C.Jensen?

✓ High dirt-holding capacity built for dust-intensive and abrasive mining conditions

✓ Offline, non-intrusive filtration that cleans oil without interrupting production

✓ Documented improvements verified through ISO cleanliness measurements and membrane patch analysis

✓ Reduces wear and stabilises equipment performance, extending the lifetime of pumps, valves and gearboxes

✓ Effective removal of water and oxidation residues, preventing corrosion, sticking valves and overheating

✓ Supports predictive maintenance through continuous oil condition monitoring and trend analysis

No obligation. We start with your oil condition and system data.

Webinar: Oil Care in Cement Plants

How Clean Oil Improves Uptime, Reduces Costs, and Extends Equipment Life.