Zubora 50 H Extra FF metalworking coolant, mineral oil based, long term, boron free, corrosion protection
Product code: 32070-F026
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Product description
ZUBORA 50 H EXTRA FF is a semi-synthetic, water-miscible metalworking fluid delivering long-term emulsion stability and excellent corrosion protection. The boron-free, formaldehyde-releaser-free formulation with nitrosamine inhibition ensures high process reliability.
Benefits and unique features
- Outstanding corrosion protection and clean workpieces
- Long bath life – reduced maintenance costs
- Boron-free, no formaldehyde releasers; nitrosamine-inhibited
- Developed for hard water; low foaming above 12° dH
- Broad material window: steels (incl. hardened), cast iron, aluminium
Properties and applications
- Milling, turning, drilling: medium duty at 5–7 %
- Reaming and heavy duty: 8–10 %
- Make-up water: 12–24° dH recommended; low foam at >12° dH
- Way-oil compatibility: fast de-emulsification of tramp oil
Technical parameters
| Parameter | Value |
|---|---|
| Type | semi-synthetic, water-miscible MWF |
| Mineral oil content | 30 % |
| pH (5 % in water) | 9.6 |
| Density (15 °C) | 970 kg/m³ |
| Viscosity (20 °C) | 53.8 mm²/s |
| Refractometer factor | 1.4 |
| Cast-iron chip test (1:20) | corrosion grade 0 |
| Make-up water hardness | 12–24° dH |
| Working concentration | 5–7 % / 8–10 % |
| Storage | +5 to +40 °C |
| Packaging | 200 L drum |
Storage recommendations
Store in the original sealed container at +5…+40 °C. Prepare with 12–24° dH water and check concentration by refractometer (factor 1.4). Keep the system clean and follow coolant hygiene best practices.
FAQ
Which materials? Steels (incl. hardened), aluminium and cast iron.
What concentration? 5–7 % for medium duty, 8–10 % for heavy duty.
What water hardness? 12–24° dH; low foaming above 12° dH.
Product safety
Manufacturer
Zeller+Gmelin Sp. Z o.o
Wiejska 59
55-095 Mirków, Poland
Responsible person in the EU
Zeller+Gmelin Sp. Z o.o
Wiejska 59
55-095 Mirków, Poland
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