The 106 Series Rotary Unions are high-speed rotary unions specifically designed for machine tool applications. Suitable for air, coolant, and hydraulic oil service, they provide reliable sealing, smooth operation, and long-lasting performance under demanding operating conditions.
The 106 Series Rotary Unions are high-speed rotary unions specifically designed for machine tool applications. Suitable for air, coolant, and hydraulic oil service, they provide reliable sealing, smooth operation, and long-lasting performance under demanding operating conditions.
The 106 Series is built specifically for the demands of machine tool coolant, air, and hydraulic circuits — where speed, contamination protection, and sealing efficiency all matter at once.
Robust self-supported design for reliable operation.
Made from aluminium anodized housing and stainless steel rotor for durability and corrosion resistance.
Available with both radial and axial connection options for flexible installation.
Balanced mechanical seal design for reliable and efficient sealing performance.
Lybranth provides effective protection for the bearing against contaminants.
Different sealing options are available to suit various operating conditions.
Full flow design provides efficient media flow with minimum restriction.
Machine tool environments are rarely clean — coolant mist, airborne particulate, and washdown spray are all part of the working environment a spindle-mounted union has to survive in.
Without a dedicated contaminant barrier, coolant mist and airborne particulate from the machine tool environment can work their way toward the bearing, accelerating wear and shortening service life at the high rotational speeds the 106 Series is built to run.
Lybranth provides effective protection for the bearing against contaminants, keeping the bearing running clean through the demanding operating conditions typical of machine tool coolant, air, and hydraulic oil circuits.
Every material and design choice on the 106 is made against the same brief: run true, run clean, and run at machine tool spindle speeds without adding unnecessary mass.
Made from aluminium anodized housing and stainless steel rotor for durability and corrosion resistance, keeping added mass to a minimum at spindle-mounted speeds.
Balanced mechanical seal design for reliable and efficient sealing performance, with more than one sealing option available to suit various operating conditions.
Full flow design provides efficient media flow with minimum restriction, available with radial or axial connection for flexible installation.
For sealing option guidance or stock availability in your required size and connection type, contact the Carbon Rotofluid technical team.
| Media | Air, coolant, hydraulic oil |
| Size | ⅛″ to ½″ |
| Max. speed | Up to 10,000 RPM |
| Max. pressure — air, gas & water | 15 bar |
| Max. pressure — coolant | Up to 60 bar |
| Max. pressure — hydraulic oil | Up to 30 bar |
| Max. temperature | 60 °C for all media |
| Connection type | As per ISO 228 (NPT / Metric) |
The 106 Series' balanced mechanical seal design and full flow construction are matched to the pressure demands of each media type it handles.
Rated to 15 bar at up to 60°C, covering standard machine tool air and coolant-adjacent circuits.
Rated up to 60 bar — the highest-pressure duty the 106 handles, matched to full flow design for minimum restriction at that pressure.
Rated up to 30 bar, with sealing options selected to suit hydraulic oil service specifically.
Its combination of high-speed capability, lightweight corrosion-resistant construction, and contamination protection makes the 106 Series a natural fit across a range of machine tool circuits.
Machine tool air and minimum quantity lubrication (MQL) circuits running at spindle speeds up to 10,000 RPM.
Through-spindle coolant delivery at up to 60 bar, where full flow design keeps restriction to a minimum at high pressure.
Machine tool hydraulics running up to 30 bar, with sealing options matched to hydraulic oil service.
Any spindle-mounted application where contaminant protection, balanced sealing, and 10,000 RPM capability are all required together.