Cutting Oils & Machining Oils for CNC Metalworking
Cutting oils (also known as machining oils or CNC oils) are essential for metalworking operations that require maximum lubrication and surface quality. These non-soluble metal cutting oils are used neat - without water dilution - making them ideal for demanding machining processes.
Compared to water-soluble coolants, cutting oils provide superior lubricity, improved tool protection, and consistent performance in heavy-duty applications such as threading, tapping, forming, and deep-hole drilling.
Why Use Cutting Oils
- Maximum lubrication: reduces friction and tool wear in demanding cutting operations.
- Improved surface finish: delivers smooth, high-quality machining results.
- Thermal stability: maintains performance under high pressure and temperature.
- Tool protection: extends tool life and reduces downtime.
- Corrosion resistance: protects both parts and machine components.
Types of Cutting Oils
Metal Cutting Oils
High-performance metal cutting oils designed for turning, threading, broaching, and general CNC machining. Provide excellent lubricity and chip control for steel, stainless steel, and alloys.
Forming Oils
Forming oils are used in metal deformation processes such as stamping, deep drawing, and thread forming. They reduce friction, prevent scoring, and improve tool life.
Grinding and Honing Oils
Low-viscosity oils designed for precision grinding and finishing. They provide effective cooling and prevent loading of abrasive tools.
EDM Dielectric Oils
Specialized EDM oils used as dielectric fluids in electrical discharge machining. These fluids ensure stable spark conditions and precise material removal. For dedicated products, see our EDM Fluids category.
Applications and Materials
- CNC turning and milling of steel and stainless steel
- High-alloy and difficult-to-machine materials
- Tapping, threading, and deep-hole drilling
- Metal forming and stamping
- Grinding, honing, and finishing operations
Cutting Oils vs Coolants
Cutting oils are best suited for operations where lubrication and surface finish are critical. In contrast, coolants are used when heat removal and cleanliness are the main priorities.
For high-speed machining and general-purpose applications, see our . Together, coolants and cutting oils form the complete range of used in CNC machining.
What is the difference between machining oil and cutting oil?
When should I use cutting oils instead of coolant?
Are cutting oils suitable for all metals?
Can cutting oils be reused?
Do cutting oils produce mist or smoke?
