Machine shops run on coolant, and coolant runs downhill fast: swarf and fines wreck surface finish and tool life, and tramp oil turns a sump rancid. Bag filtration is the cheapest way to fight both: machine coolant filter bags handle the solids, and our Oil Magnet® bags pull the tramp oil — in the same housings you already own.
The Filtration Problems in Metalworking
- Solids in coolant — grinding swarf, chips, and fines recirculate through the tool, scoring finishes and clogging nozzles and lines.
- Tramp oil — way lube and hydraulic oil leak into the sump, float on the coolant, feed bacteria, and shorten coolant life.
- Wash-water carryover — parts washers and rinse tanks load up with soils and oil that redeposit on parts.
What We Recommend
| Application | Media | Typical starting point |
|---|---|---|
| Machine coolant recirculation (CNC & machining centers) | Felt filter bags, polyester or polypropylene | 50–100 µm |
| Grinding coolant / surface-finish critical | Felt, tighter rating | 10–25 µm |
| Tramp oil in coolant or wash water | Oil Magnet® oil-absorbing bags | Removes free & mechanically emulsified oil while filtering solids |
| Parts washers / rinse tanks | Felt or Oil Magnet® | 25–50 µm |
All media come in standard bag sizes 1–4 and fit the housings you already own — Eaton, Rosedale, FSI, Hayward and others (see the cross-reference guide).
Why Shops Buy From Us
We manufacture in New Jersey, so a shop that burns through bags weekly isn’t paying a distributor markup on somebody else’s import. Odd sump, odd housing, or an in-house fabricated filter cart? Custom bags to your dimensions are a normal order for us, not a special project.
Tell us the fluid, the flow, and what’s fouling it: 800-554-8555 or request a quote.