Shell Tonna S2 M 220
Shell Tonna S2 M 220 is a high-performance slideway oil specifically developed for the lubrication of machine tool slideways, tables and feed mechanisms. Formulated using carefully selected base oils and advanced additive technology, Shell Tonna S2 M 220 provides excellent frictional performance, strong surface adhesion and reliable protection for critical machine tool components. The formulation is designed to deliver smooth and accurate machine movement while maintaining consistent lubrication in environments where exposure to cutting fluids and coolants is common.
One of the key advantages of Shell Tonna S2 M 220 is its excellent frictional control. The oil is formulated to minimise stick-slip behaviour, which can occur when machine slideways move intermittently rather than smoothly. By reducing stick-slip effects, Shell Tonna S2 M 220 helps ensure smoother and more precise machine movement. This improved motion control contributes to higher machining accuracy, better surface finishes and improved dimensional consistency of manufactured components.
Shell Tonna S2 M 220 also provides strong adhesion to slideway surfaces. The formulation contains special tackiness additives that allow the oil to remain firmly attached to slideways and machine components even when exposed to metalworking fluids. This strong adhesion helps prevent the lubricant from being washed away by soluble cutting fluids, maintaining consistent lubrication and reducing overall lubricant consumption during operation.
Another important benefit of Shell Tonna S2 M 220 is its excellent separation from water-miscible cutting fluids. The oil separates quickly and completely from water-based metalworking fluids, allowing contaminants to be easily removed through skimming. This separation capability helps maintain coolant quality, extend coolant life and reduce potential health and safety concerns associated with contaminated cutting fluids.
Shell Tonna S2 M 220 also provides effective anti-wear and corrosion protection for machine tool components. The advanced additive system forms a protective lubricating film between metal surfaces, helping protect slideways, gears, bearings and hydraulic components from wear. In addition, the formulation provides excellent corrosion resistance, helping protect machine surfaces and components in environments where moisture or water-based fluids are present.
Shell Tonna S2 M 220 is particularly suited for the lubrication of vertical machine tool slideways where higher viscosity oils are required to maintain a stable lubricating film. The oil is compatible with a wide range of slideway materials, including cast iron and synthetic surfaces, and can also be used in certain machine tool gearboxes and hydraulic systems where appropriate.
Physical characteristics include a kinematic viscosity of approximately 220 mm²/s at 40°C and 19.1 mm²/s at 100°C with a viscosity index of approximately 98. Shell Tonna S2 M 220 has a density of approximately 894 kg/m³ at 15°C, a flash point of around 250°C and a pour point of approximately −15°C, supporting reliable lubrication performance in demanding machine tool applications.
