Zubora 67 H Extra
Art-Nr.: 30920- semi-synthetic, water-miscible high performance cooling lubricant
- free of boron
- on the basis of mineral oil
- with high content of polar additives
- long-term stable
- excellent corrosion protection
- free of formaldehyde releasers
- plastic compatibility in accordance with VDI 3035
Due to the use of primary amines there is no risk of formation of nitrosamines according to the current
state of knowledge.
Furthermore, Zubora 67 H Extra is inhibited against the formation of nitrosamines, i.e. that even if there are any secondary amines and nitrites (e. g. through foreign carry-over) no stable N-nitrosamines can be formed. Therefore, when exceeding the limit value for nitrite according to TRGS 611 a partial or complete change
of the emulsion is not necessary.
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Product Details
| Density/20°C / DIN EN ISO 12185 | 980 kg/m³ |
| Viscosity/20°C / ASTM D 7042 | 135 mm²/s |
| pH-value (5 % in H2O) / DIN 51 369 | 9.5 (after 4 to 5 days: 9.1 - 9.3) |
| Cast iron chips test (1:20) / DIN 51 360/T2 | Corrosion degree 0 |
| Mineral oil content | 30 % |
| Water hazard class, concentrate | 2 |
| Water hazard class, emulsion | ( |
| Correction factor for determination of the concentration - refractometer | 1.1 |
Due to selected highly effective additives Zubora 67 H Extra is suitable for cutting processes of most
difficult demand. The product can be used for machining steel, cast iron and aluminium.
Due to a special formulation Zubora 67 H Extra is particularly long-term stable. The innovative additive package effects a longer tool life and enables the working with high cutting speeds. Thus, a high process security can be guaranteed even for very difficult working operations. Furthermore, Zubora 67 H Extra
is well suited for difficult cutting operations with small diameter (5 mm). This advantage guarantees
high flexibility for different cutting processes mainly in central systems and working centres.
The necessary working concentration depends on the difficulty of the operation and the material.
Recommended hardness of the preparation water:
12 to 24° dH (210 - 430 ppm CaCO3).
drilling/milling etc. approx. 5 %
reaming/sawing etc. approx. 10 %