Castrol Syntilo CR 4, 20L

Castrol Syntilo CR 4 is a high-performance synthetic metalworking fluid specially designed for precision grinding operations involving tungsten carbide and steel. It forms a clear and stable solution in both hard and soft water, offering excellent fluid stability, corrosion protection, and outstanding resistance to bacterial contamination. Its boron-free, chlorine-free and nitrite-free formulation ensures operator safety and environmental compatibility.

Applications:

Castrol Syntilo CR 4 is recommended for surface and cylindrical grinding operations, especially in the machining of tungsten carbide on centerless and double-disc grinders. It can also be used effectively for grinding steel in various industrial environments.

Advantages and Benefits:

• Minimizes cobalt leaching: enhances workplace safety and maintains part integrity.
• Superior surface quality: maintains cobalt content and prevents surface weakening.
• Low foaming tendency: consistent grinding performance in hard and soft water.
• Excellent microbial resistance: longer fluid life, lower maintenance and disposal costs.
• Effective tramp oil separation: oils rise to the surface and are easy to remove.
• Powerful wetting action: fast swarf removal, clean grinding wheels, and improved workplace cleanliness.
• Low residue formation: clean systems even after long service periods.
• Environmentally friendly: free from boron, chlorine, phenols, and nitrites.

Classification according to standards:

• DIN 51361 – pH value
• DIN 51757 – density

Approvals and Certifications:
Compliant with industrial health and safety standards. Safe for use in production environments. Free from hazardous substances and suitable for environmentally responsible operations.

Technical Data:

Recommended working concentration:

• Grinding: 5–6%

Water hardness:
Recommended range: 50–400 ppm CaCO₃

Storage:
Store in a dry and cool location between 5–40°C. Protect from direct sunlight and frost. Keep containers tightly closed and avoid water contamination.

Documents for download:
Product Data Sheets