Machining Coolant Oil – Drilling Oil – Tapping Oil

Mid Cool B410 – Available in IBC, 208 & 20 litres

A multi functional high performance Synthetic EP water soluble metalworking fluid

Mid Cool B410 is a fantastic high performance coolant, semi-synthetic metalworking fluid formulated for machining and grinding of a wide range of materials. This formulation achieves the highest levels of ferrous rust protection whilst also maintaining low levels of foam even in soft water areas. The product forms a stable translucent micro emulsion in both soft and hard waters and is inhibited against bacterial growth.

Mid Cool B410 has been developed for moderate to difficult machining operations and contains HP (high performance) esters, is free of chlorine and secondary amines. It is suitable for use across a wide range of materials, ferrous, non-ferrous and aerospace alloys.

Mid Cool B410 exhibits excellent lubricity characteristics to provide both good tool life and surface finish making the product suitable for a whole variety of machining applications whilst maintaining machine cleanliness and excellent operator acceptability and skin compatibility.

Application & Benefits – Mid Cool B410 Data Sheet
  • Reaming
  • Tapping and threading
  • Deep hole drilling and boring
  • Milling
  • General Machining
  • Contains HP synthetic additives
  • Low foam at high pressure & Chlorine Free
  • Suitable on cast and SG iron, steel, nonferrous, aluminium and aerospace alloys
  • Suitable for use in hard and soft water
  • Micro emulsion provides excellent flushing and cooling
  • Secondary amine free


Typical Operations




6% to 8%


General machining


5% to 8%





8% to 12%




6% to 12%





5% to 10%





3% to 5%


Broaching, sawing



8% to 10%


Turning, milling



5% to 8%



Mid Cool B410


Characteristics Typical Data Characteristics Typical Data
AppearanceAmber liquidIP287 corrosion breakpoint2% (v/v)
OdourSweetSpecific Gravity (@20oC)0.99
Emulsion AppearanceTranslucentLoadbearing capacity (kg/mm2)1.650
PH (@ 5% concentration)9.4Refractometer Conversion Factor1.50


Mid Cool B410 is a truly versatile water soluble metalworking fluid that can be used across a diverse range of metals, applications and water hardnesses. The performance parameters of Mid Cool B410 make it an ideal candidate product to be used throughout a machine shop as a high performance general purpose cutting and grinding fluid. If required please consult your local selling agent or Varol Technical Department for further information.

Bio-stability – these products give excellent bio-control maintaining bacteria levels well within the HSE (Health and Safety Executive) guidelines.

Corrosion inhibition – These products give equivalent corrosion protection, or better than boron containing products.

Operational Recommendations

Mid Cool B410 is designed to be mixed with water; it has been developed to exhibit full multi-metal compatibility and is suitable for use in soft and hard water types.

Mix emulsions of Mid Cool B410 with water by adding concentrate to water and then mixing or use a suitable proportioning mixer unit, these are available on request. The use of an airline to mix the solution is not recommended. Machine top up may require a weaker dilution than the initial machine charge concentration. Recommended concentrations can vary depending on operations, materials, tooling, coolant pressure, coolant flow. The above information is given for guidance. Please contact your representative for further advice.

Mid Cool B410 should always be stored indoors and protected from frost. Good standards of hygiene and housekeeping should always be adopted when using any metalworking fluid. A separate MSDS is available for this product.

As with all modern cutting fluids, concentration control is of paramount importance, therefore regular check by use of a refractometer is recommended for this product. It should be noted that the individual product refractometer correction factor should always be used to ensure accuracy.