Offline Oil Filtration for Reservoir Cleanup
Inline filters can't reach ISO cleanliness targets on heavily-loaded systems. Armor distributes the offline filtration carts and drum-mounted units that bring already-contaminated oil back to spec.
Inline filtration alone isn't enough
Built-in pump suction and return-line filters are sized for component protection, not bulk-oil cleanliness. They keep large debris out of the pump where it would do immediate damage, but they don't pull the reservoir back to ISO 18/16/13 once the oil has been compromised. Once particle counts drift, only offline (kidney-loop) filtration moves the cleanliness needle in the right direction inside the maintenance window you have available.
Offline filtration restores cleanliness
Offline carts pull oil from the reservoir, push it through high-efficiency filtration, and return it cleaner than the inline can deliver. Run on schedule or in response to oil analysis showing rising particle counts.
- Drum-top units for filtering in-bound new oil
- Cart units for offline reservoir cleanup
- Filter elements rated to ISO cleanliness targets
- Pumps sized for typical hydraulic and gearbox volumes
Products that solve this
Drum-Top Filtration
Filters inbound new oil before it goes into a reservoir.
Browse drum-top filtrationIndustries that face this problem
Where we see oil filtration questions come up most.
Common questions
How do I know if I need offline filtration?
Oil-analysis particle counts above your equipment's ISO cleanliness target are the signal — usually showing up as a wear-metal trend that started months earlier. Inline filtration alone can hold the line on a clean system, but it can rarely pull a contaminated reservoir back to spec on its own. Offline carts run periodically (or continuously on a kidney loop) bring the bulk oil back into target without taking the equipment down for an oil change.





