Description
Deublin 904-120-188
Technical Specifications Multi-channel medium passage structure; compatible with liquid and gas media; sealing components adapted to medium pressure and temperature range; precision bearing support structure; standard thread interface for pipeline connection; wide operating speed range.
Functional Features Transmits fluid medium from static pipeline to rotating mechanical parts. High-precision sealing structure reduces medium leakage during rotation. The bearing assembly supports stable rotation of the rotor part. Multiple internal flow passages can realize simultaneous input and return of media. It can adapt to continuous rotation and intermittent rotation working conditions.
Application Scenarios Machine tool spindle cooling, printing roller cooling, plastic calender roller, metallurgical rolling equipment and rotary hydraulic fixture systems.
Performance Parameters Low friction torque; stable sealing performance under long-time rotation; leakage rate kept within design range; bearing rotation runs smoothly under rated speed and pressure.
Material Composition Main body uses high-strength alloy or stainless steel; sealing ring is made of wear-resistant composite material; bearing is precision rolling bearing; pipeline thread interface is alloy steel with anti-corrosion treatment; internal flow channel surface adopts precision machining.
Structural Characteristics Combined structure composed of static shell and rotating rotor; internal independent medium flow passages separated by partition structure; bearing group installed between shell and rotor; both ends are equipped with thread ports for connecting external pipelines.
Working Principle The static shell is fixed on the fixed frame, and the rotor is connected with the rotating equipment shaft. The medium enters the flow passage from the static side pipeline, passes through the internal channel of the rotary union, and flows into the rotating equipment. The sealing elements between the static part and rotating part prevent medium leakage. The bearing supports the rotor to rotate freely relative to the shell.
Installation Requirements Fix the static shell on the fixed support and connect the rotor shaft end to the rotating equipment. Align the coaxiality strictly to avoid radial force on the rotary union. Connect inlet and return pipelines according to medium requirements. After installation, conduct pressure test to check sealing state.
Precautions for Use Do not exceed rated medium pressure, temperature and rotating speed. Avoid radial and axial impact load during operation. Select matching medium according to sealing material characteristics. Regularly check leakage state and replace wearing sealing parts according to service cycle.
