Oemeta Unimet: The "No-Headache" Coolant for Steel & Cast Iron
The Oemeta Unimet Series is the definitive choice for high-volume machining of ferrous metals. While the formulation is German-engineered by Oemeta Chemische Werke GmbH, the fluid is manufactured in Salt Lake City, Utah and stocked in US Distribution Centers. This hybrid approach gives American machine shops access to advanced European "biostable" technology without the risk of import delays.
Why Shops Choose the Unimet Series
The Unimet platform (featuring the flagship Unimet AS 260) is engineered to solve the three most common failures of standard semi-synthetics: emulsion splitting, bacterial odors, and flash rust.
1. Bactericide-Free "Biostability"
The Problem: Traditional coolants rely on formaldehyde-releasing biocides to kill bacteria. These chemicals trigger dermatitis and eventually fail, leading to "Monday Morning Stink." The Unimet Solution: Unimet is Biostable. It uses advanced ingredients that naturally resist biological growth without poisons. The result is a fluid that is free of bactericides, boron, and formaldehyde, significantly reducing operator skin rashes while keeping sumps fresh for 12+ months.
2. High-Hardness Stability
The Problem: Hard water (common in the Midwest and US manufacturing hubs) causes standard coolants to split, forming "cottage cheese" soaps that coat machine windows. The Unimet Solution: Unimet is engineered with robust emulsifiers that maintain a tight, stable white emulsion even in hard water environments (20+ grains), preventing soap formation and keeping machine interiors clean.
3. Ferrous Corrosion Inhibition
The Problem: Cast iron and steel parts flash-rust almost immediately after machining if the coolant’s pH drops. The Unimet Solution: Unimet is specifically formulated as a Ferrous Specialist. It contains specialized inhibitors that protect Steel and Gray Cast Iron from corrosion, ensuring your parts don't rust in the bin between operations.
Technical Insights: The Real Cost & Conversion
What to expect when switching to Unimet.
The "Real" Cost of Ownership
While premium coolants have a higher upfront cost per drum, Unimet's tight emulsion stability significantly reduces drag-out. Most facilities running Unimet stabilize their sumps with a lean 1% to 3% makeup mix. This means you consume significantly less concentrate annually compared to economy fluids that require high makeup rates to prevent rust.
Machine Compatibility
Unimet AS 260 is engineered to be aggressive on cut quality but gentle on your capital equipment.
- Seal Safe: Fully compatible with standard Buna-N, Viton, and HNBR seals.
- Paint & Polycarbonate: Formulated with a neutral pH buffer to prevent the peeling of machine paint or crazing of polycarbonate windows.
The "Zero-Downtime" Conversion Protocol
Switching to Oemeta does not require days of downtime.
- Clean While You Run: Add Oemeta System Cleaner to your old coolant 24 hours before draining. It kills fungus and lifts sludge while you continue machining.
- Drain & Rinse: Remove chips and rinse with a 1% Unimet solution.
- Charge: Fill with fresh Unimet AS 260. (Contact our Fluid Lab for a dedicated step-by-step conversion guide for your specific central system.)
Tech Tool Support & Availability
When you source Oemeta products through Tech Tool, you gain a national fluid management partner:
- Rapid Deployment: Inventory is stocked in US Distribution Centers (Pails, Drums, and Totes) for immediate dispatch to facilities nationwide.
- Fluid Lab Access: Get free access to our Fluid Maintenance Lab for routine testing to track concentration and pH.
- Compliance Ready: We provide dedicated SDS compliance support and "Bactericide-Free" certification letters for safety managers.
Recommended Equipment
To maintain the "Biostable" performance of Unimet, precise concentration is key.
- Mixing: Use the Dosatron D14MZ10 (1–10%) for accurate initial charging.
- Verification: Check daily with an Industrial Refractometer (0–18% Scale).
- Maintenance: Remove tramp oil with a Nimatic Belt Skimmer to keep the emulsion oxygenated.
Frequently Asked Questions
Is Oemeta Unimet safe for operators with sensitive skin?
A: Yes. Unimet (specifically AS 260) is formulated Free of Bactericides and Formaldehyde. By eliminating these harsh sensitizers, Unimet significantly reduces the risk of contact dermatitis compared to traditional coolants.
Can I use Unimet on Aluminum?
A: Unimet AS 260 has good multi-metal capabilities, but the series is primarily optimized for Steel and Cast Iron. For sensitive aerospace aluminum or yellow metals (Brass/Bronze), we recommend the Oemeta Novamet Series to guarantee stain-free performance.
What is the mix ratio for Oemeta Unimet?
A: For general machining, 5% to 8% is standard. For heavy-duty tapping or reaming on tough steels, 8% to 10% is recommended. Always verify with a refractometer (Refractive Index typically ~1.0 for Unimet AS 260).
