Monroe Fluid Technology



Biostable water soluble cutting and grinding fluid

ASTRO-CUT a is a medium-to-heavy duty biostable soluble oil concentrate containing approximately 60% mineral oil. This product was designed to be extended with water for the machining and grinding of virtually all metals except magnesium. ASTRO-CUT A is formulated without the use of chlorine.

Part No. Quantity
34-050 5 Gallon Pail
34-104 1 Gallon Bottle

BIOSTABILITY refers to the ability of a metalworking coolant to resist extreme biological degradation. This provides extremely long sump life in a properly maintained machine tool and diminishes the possibility of "Monday Morning Odor".
Designed for use in metalworking applications such as all CNC milling, turning, drilling, tapping, and grinding. ASTRO-CUT A is also excellent on conventional machining processes and sawing applications.
  • Eliminates Need for Tankside Additives
  • Superior Tramp Oil Rejection
  • Low Foaming
  • Operator Friendly
  • Mild Pleasant Odor
  • Excellent Lubricity
  • Excellent Corrosion Inhibition
  • Clean Running
  • Reduced Overall Cost
  • Excellent Hard Water Stability
  • Long Lasting
  • Appearance - concentrate:
Amber Liquid
  • Appearance - dilution:
Opaque Amber-White
  • Odor:
  • Residual Film:
Soft, Soluble
  • pH @ 20:1:
(5 %) 9.0 ± 0.5
  • Specific Gravity @ 60° F.
0.95 ± 0.03
  • Lbs./Gal.
7.9 ± 0.1
  • Flash Point, COC, ° F.
Concentration - ASTRO-CUT A:
  • Concentration:
4% (1:25) 5% (1:20) 6% (1:17) 7% (1:14) 8% (1:12) 9% (1:11) 10% (1:10)
  • Brix Reading:
4.0 5.0 6.0 7.0 8.0 9.0 10.0
An optical refractometer may be used for determining concentration. These numbers are typical and are not to be construed as specifications.
Recommended Starting Dilutions:
  • Centerless, ID, OD, Surface Grinding:
25:1 (4%)
  • Milling, Drilling, Turning:
20:1 (5%)
  • Tapping, Reaming, Sawing:
10:1 (10%)
When mixing coolant, it is best to use an automatic proportioner which accurately and thoroughly mixes coolant. Always replenish the coolant with a mixture of coolant and water, not just coolant or water. Never add coolant concentrate directly to the sump.

IMPORTANT! At concentrations below 4%, the biostability of this product may be compromised, leading to much shorter sump life. To insure maximum coolant life, sump should be thoroughly cleaned and neutralized using ASTRO-CLEAN A prior to charging machine with ASTRO-CUT A.
View Monroe Fluid Technology's Website for Product Data Sheet and MSDS
The information presented on this page is for informational purposes only. Please ensure the accuracy of the data from the manufacturer's Product Data Sheet and Material Safety Data Sheets listed above.

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