Metalworking fluids are a key factor in CNC machining performance. Coolants and lubricants support stable processes, improve surface quality, and extend tool life across a wide range of machining operations. At CNCmarket, you will find reliable metalworking fluids designed for efficient and consistent production.
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excl. taxes€103.36CNC machines (Computerized Numerical Control) are a central part of modern metalworking. However, their performance depends not only on the machine and tooling, but to a large extent on the metalworking fluid used. Coolants and lubricants (metalworking fluids) directly influence cutting quality, process reliability, and tool life, making them a key factor for efficient and stable production processes.
Metalworking fluids – also referred to as cutting or machining fluids – perform several essential functions in machining operations:
During machining, high temperatures are generated by friction between the tool and the workpiece. Metalworking fluids remove this heat efficiently, prevent thermal distortion, and help maintain dimensional accuracy and process stability.
The lubricating effect reduces friction in the cutting zone. This minimizes tool wear, lowers the risk of tool breakage, and improves surface finish. Reduced friction also leads to lower energy consumption during machining.
Metalworking fluids flush chips and abrasive particles out of the cutting area. This prevents tool damage, built-up edge formation, and surface defects on the workpiece.
Only a properly selected and well-maintained metalworking fluid – with correct concentration and cleanliness – can consistently fulfill these functions.
Semi-synthetic metalworking fluids consist of a combination of mineral oil components and synthetic additives. In practice, they are typically used as emulsions and are among the most commonly applied fluids in metalworking.
They offer a balanced combination of performance, service life, and cost efficiency.
Synthetic metalworking fluids are free of mineral oil and are based entirely on synthetic components.
They are particularly suitable for precise and clean machining operations, but material compatibility should always be carefully evaluated.
Metalworking fluids based on plant-derived esters are becoming increasingly important, especially for companies with a strong focus on environmental and workplace safety.
These products are generally more expensive but offer advantages in terms of sustainability and improved working conditions.
Straight oils are non-water-miscible metalworking fluids based on mineral or ester oils. They are used where maximum lubrication performance is required.
Disadvantages include higher consumption, limited cooling capability, and higher operating costs compared to emulsions.
The right metalworking fluid is a critical success factor in CNC machining. It has a direct impact on tool life, surface quality, process reliability, and overall productivity.
Quality, consistency, and technical support depend largely on the selected metalworking fluid manufacturer. By choosing the appropriate product based on material, machining process, and operating conditions, production costs can be reduced and stable manufacturing processes can be achieved.
