Filter straight oil
back to new condition.
The S.O.F. straight oil filter purifies neat industrial oils by removing solids and water associated with corrosive and abrasive wear. A field installation reduced new-oil purchases by more than half, and purification can extend oil service life indefinitely.
- 3 µm
- fine solids removed
- 10 ppm
- water content after filtration
- 50%+
- reduction in new oil purchases · field installation
- 16 fluids
- from hydraulic to EDM oil
Oil purification that reduces new-oil demand
The S.O.F. unit removes solid particulates and moisture from straight industrial oils, controlling the acid, water, and silt contamination that degrades a fluid. Purified oil returns to new condition or better, and its working life can be extended indefinitely.
- Staged solids and water removalRemoves bulk solids, fine solids to 3 microns, and bulk and trace water to 10 ppm.
- Equipment runs betterCleaner oil means more efficient operation, longer component life, and longer life for the in-line filters downstream.
- Portable, low-maintenance designThe portable configuration moves between oil systems and operates with limited routine attention.
Bulk solids, fine solids, then water
Dirty oil passes through staged filtration: a bag for the bulk load, a cartridge for fine solids, and a moisture-removal stage that reduces bulk and trace water to 10 ppm. The treated oil returns to service after filtration, to new condition or better.
The example below shows a portable bag and cartridge canister configuration; the staging is matched to the fluid and contamination at quotation.
Bag filter
Captures bulk solids first, reducing the coarse-solids load on the downstream cartridge.
Cartridge filter
Polishes the oil, removing fine solids down to 3 micron.
Moisture removal
Removes bulk and trace water to 10 ppm, reducing moisture that contributes to corrosion.
System functions and operating results
| System function | Operating result |
|---|---|
| Removes bulk & fine solids | Particulate down to 3 micron taken out, so the oil stops carrying the abrasives that score parts. |
| Removes bulk & trace water | Water pulled down to 10 ppm, removing the moisture behind corrosion and acid formation. |
| Filters oil to new condition | Purified oil performs like new, and its life can be extended indefinitely. |
| Portable, low-maintenance operation | The unit moves between oil systems and has low maintenance requirements. Application-specific simple payback can be estimated from quoted investment and current oil, maintenance, and disposal costs. |
| Autonomous protective controls | Automatic high-pressure shutdown protects a loaded element, while low-pressure shutdown responds to loss of flow and activates a warning lamp. |
| Protects downstream filters | Cleaner oil extends the life of in-line filters and the equipment they protect. |
| Reduces oil purchases and disposal | A field installation achieved more than 50% lower new-oil purchases, with corresponding waste-oil disposal reduction. |
Supported straight-oil and industrial-fluid applications
The S.O.F. line purifies neat oils across a plant, from the machining floor to the hydraulics to the heat-treat shop.
- Machining oils
- Cutting oil
- Drawing oil
- EDM oil
- Quench oil
- Power & motion
- Hydraulic oil
- Gear oil
- Turbine oil
- Compressor oil
- Lubrication & drivetrain
- Lube oil
- Engine oil
- ATF fluid
- Brake fluid
- Specialty & protective
- Transformer oil
- Rust-preventing oil
- Synthetic oils
- Fuels
S.O.F. is designed for straight, neat, and synthetic oils, not water-based coolant. Use C.R.O.S.S. for coolant recycling and T.O.S.S. for tramp-oil separation.
Oil back to new condition or better
The illustrated S.O.F. configuration removes bulk solids on the bag, fine solids to 3 micron on the cartridge, and trace moisture down to 10 ppm, the contamination that drives the corrosive and abrasive wear behind most equipment failures.
Purified oil performs like new and its working life can be extended indefinitely. An EdjeTech engineer confirms oil compatibility and system configuration during the application review.
- 3 µm
- Fine solids removed on the cartridge stage.
- 10 ppm
- Water content after filtration, bulk and trace removed.
- 50%+
- Reduction in new-oil purchases at a field installation.
- 90%+
- Of system failures trace to the wear this contamination causes.
Matched to your oil and contamination
The S.O.F. line is built to the fluid and the contamination it carries. Configuration is application-specific: hydraulic-oil reclamation and EDM-oil polishing require different filtration stages. The staging, micron ratings, and format are set with an engineer.
- Example unit
Portable canister unit
The portable bag and cartridge canister unit captures bulk solids on the bag and fine solids to 3 micron on the cartridge, with moisture removal down to 10 ppm to rejuvenate the oil. The portable build uses a TEFC motor, self-priming positive-displacement pump, and NEMA 4 electrical enclosure with 120 VAC single-phase power; 240 VAC and Class I, Division I explosion-rated configurations are available.
- Format
- Portable canister, bag + cartridge
- Fine solids
- To 3 micron on the cartridge stage
- Water
- Bulk and trace, down to 10 ppm
- Built to spec
Sized to your fluid
Micron ratings, water-removal stage, flow, and portable or fixed format are matched to the oil and its contamination profile.
- Decide by
- Fluid type, contamination, and flow
- Fluids
- 16 oils, from hydraulic to EDM to transformer
- Fit check
- Engineer review of your oil and application
Product and ownership questions
- 01
Which oils can it filter?
Compatible fluids include hydraulic, gear, turbine, compressor, cutting, drawing, EDM, quench, lube, engine, transformer, and rust-preventing oils, plus ATF, brake fluid, synthetic oils, and fuels. An engineer can evaluate oils outside this list because the filtration stages are selected for the fluid.
See the full fluid list → - 02
Does it remove water as well as solids?
Yes. It removes bulk solids and fine solids down to 3 microns, plus bulk and trace water down to 10 ppm. Water removal reduces corrosion and acid-formation risk, while solids removal addresses abrasive wear.
- 03
Will filtered oil really perform like new?
Purified oil returns to new condition or better, and its working life can be extended indefinitely. The right media for the contaminant is what makes that repeatable.
- 04
Is this for my coolant?
No. The S.O.F. line is for straight, neat, and synthetic oils, rather than water-based coolant. For coolant recycling, see C.R.O.S.S.; for tramp oil in coolant, see T.O.S.S.
See C.R.O.S.S. → - 05
How is the correct configuration selected?
The configuration depends on the solids or moisture you need to remove, how much oil needs treatment, and whether you want to serve one machine or several. Describe the problem in your oil system; an engineer will work through the sizing and filtration stages with you.
Talk to an engineer → - 06
What routine maintenance is required?
Routine ownership care centers on condition-based filter-element replacement, accessible strainer cleaning, and hose inspection. The self-priming, self-lubricating pump requires no scheduled maintenance.
- 07
What support is available after purchase?
EdjeTech supplies replacement bag and cartridge media by model and provides operating guidance, troubleshooting support, and technical documentation through the support library.
Review support resources →
Keep usable cutting oil in service
Remove solids and moisture so usable cutting oil stays in service instead of being replaced.
- Equipment guidance
Talk to an engineer
Discuss the contamination causing you to replace your oil.
Talk to an engineer → - Support for installed S.O.F. units
Parts and media
Reorder bag and cartridge media by model, and find manuals in the support library.
Go to support → - Estimate savings and payback
Savings calculator
Estimate new-oil savings, disposal reduction, and application-specific simple payback using current costs and quoted investment.
Estimate savings → - Equipment quotation
Request a quote
Recover usable cutting oil instead of paying to replace it.
Request a quote →