ULTRACUT® EVO 255 – Extreme Pressure Long Life Cutting Fluid

ULTRACUT® EVO 255 is a premium extreme pressure (EP) soluble oil cutting fluid by ROCOL®, distributed in Southeast Asia by PROSTECH. Formulated for medium to severe machining operations on ferrous and non-ferrous metals, including tough alloys, it combines high EP performance with a long, predictable sump life. Free from biocides and skin sensitisers, with dilution up to 40:1.

ULTRACUT® EVO 255 is an extreme pressure (EP) soluble oil cutting fluid from ROCOL®’s ULTRACUT® EVO range. It incorporates high-performance EP additives that form a durable protective film between the cutting tool and workpiece, significantly reducing wear and extending tool life in demanding machining operations.

EVO 255 is suitable for medium to severe machining of carbon steels, alloy steels, cast iron, aluminium, copper, and brass. It is particularly effective on stainless steels and heat-resistant alloys where high EP performance is required to achieve acceptable surface finish and tool life. Recommended dilution is 20:1 to 40:1.

Like all products in the EVO range, EVO 255 contains no biocides or skin sensitisers, meeting OHSAS 18001 and ISO 14001 requirements. Its inherent resistance to microbial degradation ensures a long, stable sump life — making it both a performance and cost-efficiency solution for precision machining workshops.

Key Features

• High EP performance — extends tool life on tough steels and difficult alloys
• Promotes excellent surface finish — reduces scrap rate
• Increases machining rates — improves productivity
• No biocides or skin sensitisers — OHSAS 18001 compliant
• Long, predictable sump life — lower change frequency
• Dilution up to 40:1 — reduced concentrate consumption
• Excellent residual corrosion protection
• Low foaming — suitable for high-pressure coolant systems
• Tramp oil rejection — maintains sump cleanliness
• Suitable for individual and central cutting fluid systems

FAQ Section

What is ULTRACUT EVO 255?

ULTRACUT® EVO 255 is a premium extreme pressure (EP) soluble oil cutting fluid from ROCOL® (UK), belonging to the biocide-free EVO range. Designed for medium to severe machining on ferrous and non-ferrous metals, including tough alloys, it delivers high EP performance and long sump life with dilution up to 40:1.

How does ULTRACUT EVO 255 differ from EVO 250?

EVO 255 provides higher extreme pressure (EP) performance than EVO 250, making it suitable for medium to severe operations rather than light to medium. When operators face rapid tool wear, poor surface finish, or are machining stainless steels and heat-resistant alloys, EVO 255 is the more appropriate choice.

What is the dilution ratio of ULTRACUT EVO 255?

ULTRACUT EVO 255 is used at 20:1 to 40:1 depending on operation severity, material, and water hardness. Refractometer readings: 20:1 = 5.8; 30:1 = 3.8; 40:1 = 2.8. Richer dilutions (20:1) are recommended for heavy-duty operations and harder materials.

Is ULTRACUT EVO 255 suitable for stainless steel?

Yes. ULTRACUT EVO 255 is suitable for stainless steel and heat-resistant alloys thanks to its high EP performance. For extremely difficult materials such as Inconel or titanium, ULTRACUT EVO 260 or TRI-Logic HPX should be considered for optimum results.