1159 Series Bearingless AutoSense™ “Long Stroke” Rotating Unions for Coolant and Air Service with CoolControl™ Technology

  • Single passage for all media
  • Patented AutoSense technology automatically changes between closed seals and controlled leakage operation in response to type of media
  • Non-rotating element has “stroke” (axial movement) of up to 13.5 mm, to track drawbar movement even when the union is mounted on the clamping device
  • CoolControl technology utilizes an air pilot to hold seals closed during axial drawbar movements, thus mimimizing coolant leakage during tool change cycles
  • 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