Deublin 1109 Series Disconnect Rotor with Coolant for Dry Running Applications

Welcome to the definitive source for high-performance, cost-effective alternatives to the Deublin 1109 Series Rotary Union. Engineered for the rigorous demands of modern machine tools, our 1109 series-compatible rotary unions deliver the same exceptional performance, “Pop-Off™” seal technology, and operational reliability as the original, providing a superior value proposition for your manufacturing operations. Upgrade your CNC spindles with a solution designed for maximum efficiency and longevity.

In the world of high-speed machining, precision, speed, and reliability are the pillars of productivity. The ability to deliver high-pressure coolant through the spindle is no longer a luxury—it’s a necessity for achieving optimal tool life, superior surface finishes, and efficient chip removal. The Deublin 1109 Series has long been a benchmark for compact, bearingless coolant unions in these applications.

We recognize the critical role this component plays. That’s why we have developed a complete line of drop-in replacements for the Deublin 1109 series that meet or exceed original equipment manufacturer (OEM) specifications. Our mission is to provide engineers, maintenance managers, and procurement specialists with a smarter choice: a rotary union that delivers uncompromising quality without the premium price tag.

Key Features

• Single passage for coolant or MQL
• Pop-Off” technology allows unlimited dry running without media pressure.
• Full-flow design has no obstructions to trap swarf or debris
• Bearing-supported with threaded rotor for easy installation
• Dual ABEC 7 (ISO class P4) angular contact ball bearings
• Labyrinth system and large vents to protect ball bearings
• Balanced mechanical seals made from silicon carbide for long life, even under difficult operating conditions
• Aluminium housing, endcap anodised resists corrosion

Operating parameters

Medium	Water-based Coolant MQL (Oil Mist) Maximum 10 bar (145 psi)
Filtration Accuracy	ISO 4406 Grade 17/15/12, Maximum 60 microns
Maximum Speed	20,000 min-1 20,000 rpm
Maximum Pressure	See Table
Maximum Flow Rate	82 l/min 21.6 gpm Standard
Maximum Flow Rate	24.3 l/min 6.4 gpm High Pressure
Maximum Temperature	71℃ 160°F

Your Trusted Partner for Industrial Fluid Transfer Solutions

Don’t let the high cost of OEM components compromise your maintenance budget or operational efficiency. Our Dublin 1109 series-compatible rotary unions represent the pinnacle of performance, reliability, and value.

Ready to upgrade your machinery and reduce your costs?

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Invest in a solution that works smarter for your business. Make the switch today and experience the difference in performance and price.