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Rotating Union

  • 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
  • 1139 Series Bearingless “All-Media” Rotating Unions for Coolant, MQL, and Air Service

    • Single passage for all media
    • Patented technology operates with closed seals for coolant, as a Pop-OffTM when pressure is removed, and as with a microscopic gap between the seals (“controlled leakage”) with pressurized dry air
    • Non-rotating element has a “stroke” (axial movement) of 0.7-3.0 mm, for reliable sealing even with thermal expansion of spindle and 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
  • 1151 Series Bearingless Pop-Off™ “Long Stroke” Rotating Unions for Coolant Service

    • Single passage for Coolant and MQL
    • Patented Pop-Off technology allows unlimited dry running without media pressure
    • 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
    • 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
  • 1154 Series Bearingless AutoSense™ “Long Stroke” Rotating Unions for Coolant and Air Service with Dry Running

    • Single passage for coolant or MQL
    • Patent-pending AutoSenseTM technology automatically changes between closed seals and controlled leakage operation in response to the kind of media
    • Non-rotating element has a “stroke” (axial movement) of more than 8 mm, to track drawbar movement even when union is mounted on the clamping device
    • 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