1129 Series Bearingless Pop-Off™ Rotating Unions for Coolant Service

  • Single passage for coolant or MQL
  • Patented Pop-Off™ technology allows unlimited dry running without media pressure
  • Pop-Off stroke of 0.7-3.0 mm compensates for thermal expansion of spindle during extended operation as well as variations in drawbar position
  • Full-flow design has no obstructions to trap chips or debris
  • Balanced mechanical seals made from silicon carbide for long life even under difficult operating conditions
  • Anodized aluminum housing resists corrosion