Air Supply and Spindle Cooling

Recommended Spindle Air Supply 

For the Westwind product line, we recommend the following for spindle air supply:

  • Particulate carryover filter <1µ
  • Oil vapor carry over <0.01 mg/m3 at 20°C  
  • Dew point at running pressure <7.5°C 
  • Temperature similar to surrounding atmosphere  

Recommended Spindle Cooling

For the Westwind product line, we recommend the following for spindle cooling:

  • Clean (preferably distilled) water in a closed loop cooling system. Water should be inspected regularly for fungal and bacterial growth
  • De-ionized water should not be used
  • Inlet temperature 16°C – 20°C Typ (refer to outline drawing)
  • Temperature rise across the spindle < 10°C (unless otherwise stated by Westwind product information)
  • Use of a commercial heating system additive such as “Fernox” to minimize any corrosive and calcification effects
  • 25µm particle filter
  • Electrical ground on chiller should be at the same potential as the main machine