Central outlet high-speed rotary joint
Central outlet high-speed rotary joint for CNC machine spindle coolant & MQL. Balanced mechanical seal, anodized aluminum housing, stable at high RPM, low leakage. Custom thread sizes available for deep hole drilling & machining centers.
- mediumHydraulic oil, cutting fluid
- work pressure8.0MPA
- maximum speed15000r/min
Central outlet high-speed rotary joint
The central outlet high-speed rotary joint (rotary union) is a precision fluid transmission component specially developed for CNC machine tool spindle center-through coolant systems. It enables stationary pipelines to deliver cutting fluid, cooling oil or MQL medium into the rotating spindle without twisting the tubing, realizing continuous fluid supply during high-speed spindle rotation.
This series adopts a central outlet structure, where the medium flows out from the center of the rotating shaft, perfectly matching the internal coolant channel of machine tool spindles. Widely used in machining centers, deep hole gun drilling machines, lathes and other equipment requiring spindle through-coolant.
Product Features
1. Detached sealing technology;
2. When under pressure, it can be closed, and when under no pressure, it can be disconnected, allowing for short-term dry operation;
3. Bearing support and threaded rotor, easy to install;
4. Adopting labyrinth seal and large leakage port to protect ball bearings;
5. The shell is made of aluminum alloy, which has good heat dissipation effect at high speeds;
Speed: 15000r/min Pressure: 8.0MPA Medium: Hydraulic oil, cutting fluid
2. When under pressure, it can be closed, and when under no pressure, it can be disconnected, allowing for short-term dry operation;
3. Bearing support and threaded rotor, easy to install;
4. Adopting labyrinth seal and large leakage port to protect ball bearings;
5. The shell is made of aluminum alloy, which has good heat dissipation effect at high speeds;
Speed: 15000r/min Pressure: 8.0MPA Medium: Hydraulic oil, cutting fluid
Structural description
Single channel for coolant or MQL
Technology allows unlimited dry operation without medium pressure
Full flow design, unobstructed passage, avoiding residual impurities
The threaded rotor supported by bearings is easy to install
Double angle contact ball bearing
Maze structure and multiple large leakage ports to protect ball bearings
The balanced mechanical seal uses silicon carbide, which has a long service life, even under harsh operating conditions
Anodized aluminum shell for corrosion resistance
Technology allows unlimited dry operation without medium pressure
Full flow design, unobstructed passage, avoiding residual impurities
The threaded rotor supported by bearings is easy to install
Double angle contact ball bearing
Maze structure and multiple large leakage ports to protect ball bearings
The balanced mechanical seal uses silicon carbide, which has a long service life, even under harsh operating conditions
Anodized aluminum shell for corrosion resistance
Expected use:
The rotating joints of the 902, 903, 1109, 1110, 1111, 1121, 1151, and 1129 series are designed to provide cooling lubricant to rotating tools. During periods of stillness, compressed air can usually be used
The tool fixing area for removing chips. Rotating joint design for operation at ambient temperature
Temperature and medium temperature range from 3 ° C to 3 ° C; C to the highest. 70° C。
Definition of media:
❑ Coolant‐ It is a lotion composed of water and oil-based additives
Cutting oil
❑MQL – Minimum lubrication
For information on the working parameters and dimensions of rotary joints, please refer to
Catalog or model specific installation diagram.
The specified rotating joint design is used for non explosive environments and non flammable media.
The tool fixing area for removing chips. Rotating joint design for operation at ambient temperature
Temperature and medium temperature range from 3 ° C to 3 ° C; C to the highest. 70° C。
Definition of media:
❑ Coolant‐ It is a lotion composed of water and oil-based additives
Cutting oil
❑MQL – Minimum lubrication
For information on the working parameters and dimensions of rotary joints, please refer to
Catalog or model specific installation diagram.
The specified rotating joint design is used for non explosive environments and non flammable media.
