Rotary unions without bearings for cooling lubricants

Rotary unions without bearings for machine tools, suitable for the following media: cooling lubricants, minimum quantity lubricants, cutting oil and air. Also suitable for dry running.

Deublin bearingless rotary unions are premium mechanical solutions designed to enable the efficient transfer of cooling lubricants between stationary and rotating components in industrial equipment. They are ideal for demanding applications, where high rotational speeds, pressure, and temperatures are present, and reliability is critical.

These unions provide a safe and continuous fluid transfer, minimizing contamination and wear, without the use of bearings, which simplifies maintenance and extends equipment life.

Key Advantages

• Bearingless design – reduced maintenance and increased reliability
• Safe coolant transfer under high pressure and temperature
• Compact construction – suitable for limited space installations
• High durability – premium materials resistant to corrosion and wear
• Wide industrial compatibility – suitable for motors, pumps, rotating tools, and cooling systems

Technical Specifications

• Max pressure: up to 30 bar (depending on model)
• Operating temperature: -20°C … +150°C
• Rotational speed: up to 5000 rpm (depending on shaft diameter and fluid)
• Materials: stainless steel, seals resistant to industrial lubricants
• Sealing: high-performance mechanical seals, leak-free