Technical Specifications​

Media: coolant, compressed air, minimum-quantity lubrication

Rotor connection: M16 x 1.5 left-hand with 17.993 mm pilot

Supply connection: G 3/8-19

Air pressure: 10 bar, flow 2040 L/min, temperature 71°C

Coolant pressure: 103.4 bar, flow 82 L/min, temperature 71°C

Minimum-quantity lubrication pressure: 10 bar, flow 2040 L/min, temperature 71°C

Seal type: balanced mechanical seal with silicon carbide faces

Seal technology: AutoSense automatic transition between closed seal and controlled-leakage modes by media type

Bearing protection: labyrinth structure with multiple large leakage ports

Housing: anodized aluminum

Flow path: full-flow design to reduce deposit buildup

Functional Features​

The union transfers coolant at high pressure and air or MQL at lower pressure through one rotating passage. AutoSense technology adapts seal behavior to the connected media. The balanced silicon-carbide seal extends service life under high-speed rotation. The full-flow bore reduces chip or sediment blockage.

Application Scenarios​

CNC machining centers, grinding spindles, milling spindles, turning centers, drilling heads, and rotating tool holders requiring through-spindle coolant, air purge, or mist lubrication.

Material And Structure​

The body uses anodized aluminum for corrosion resistance. The rotor uses threaded steel with pilot registration. The mechanical seal uses silicon carbide faces. The bearing area uses labyrinth vents and leakage ports to expel contaminants and reduce bearing contamination.

Working Principle​

Stationary supply media enter through the G 3/8 port and pass into the rotor passage connected to the spinning shaft. The balanced mechanical seal retains pressure and limits leakage. AutoSense detection changes seal contact force according to whether coolant, air, or MQL is present.

Installation Requirements​

Thread the M16 x 1.5 left-hand rotor into the spindle with the specified pilot seating. Connect the G 3/8 supply with proper thread seal compatible with coolant or air. Align the rotor axially to avoid side load on the mechanical seal. Provide clean filtered coolant and dry regulated air where the process requires separate media.

Usage Precautions​

Do not exceed 103.4 bar for coolant, 10 bar for air or MQL, or 71°C for any listed media. Monitor the leakage ports for abnormal discharge. Replace the silicon-carbide seal if coolant purity is poor or abrasive particles are present. Avoid hammering the rotor thread during installation.