08 Genuine Deublin 902-120-188 Pop-off Spindle Coolant Rotary Joint

Product Description

1. Product Overview

Genuine Deublin 902-110-165 belongs to the classic 902 series Pop-off high-speed rotary union, professionally designed for CNC spindle coolant circulation and MQL minimum quantity lubrication working conditions. This product adopts mature and reliable sealing technology, which can effectively solve the problem of rapid wear of traditional rotary joints caused by frequent equipment startup, shutdown and tool change.

With stable mechanical structure and strict production standards, this rotary union can continuously run at a maximum speed of 12000 RPM under 70 Bar working pressure, which is widely compatible with various high-precision CNC machining equipment such as vertical machining centers, CNC lathes and gun drilling machines. The product is originally manufactured in the United States, with stable quality and long service life, which can effectively reduce the downtime and maintenance cost of automated production lines for users.

2. Product Structural Advantages

1. Patented Pop-off Dry-running Sealing Design

   

   When the equipment stops cutting for tool replacement or standby, the internal dynamic and static sealing surfaces will automatically separate without medium pressure, avoiding direct dry friction between silicon carbide sealing pairs. This core design greatly extends the service life of the seal, effectively reducing the failure rate caused by frequent start and stop of machine tools, which is the biggest advantage of Deublin 902 series rotary unions.
2. High Wear-resistant Silicon Carbide Balanced Seal

    

   The sealing component uses high-purity silicon carbide material, which has excellent wear resistance, corrosion resistance and high temperature resistance. It can resist the erosion of various water-based cutting fluids and anti-rust liquids, always maintain zero leakage under rated working pressure, ensure clean workshop environment and stable workpiece processing accuracy.
   

1. Universal M16×1.5 Left Hand Thread

    

   The rotor adopts standard M16×1.5 left hand thread, which is highly compatible with most mainstream spindle brands. Customers can realize direct replacement and installation without modifying spindle structure, which greatly saves maintenance time. The inlet adopts 3/8 inch PT standard thread, with good sealing and strong versatility.
2. Hard Anodized Aluminum Alloy Housing

    

   The shell is processed by hard anodic oxidation, featuring scratch resistance, oxidation resistance and efficient heat dissipation. It can quickly export the heat generated by high-speed rotation, prevent thermal deformation of internal bearings and sealing parts. Equipped with labyrinth dust-proof structure, it can block iron scraps, oil mist and coolant impurities from entering the interior to protect precision bearings.

3. Technical Specification Table

 

 

 

Item	Parameter
Model	902-110-165
Channel Type	Single Passage
Max Rotating Speed	12000 RPM
Max Working Pressure	70 Bar
Applicable Medium	Water Coolant, MQL Oil Mist
Rotor Thread	M16×1.5 Left Hand Thread
Inlet Size	3/8 inch PT
Working Temperature	-20ºC ~ 120ºC
Shell Material	Hard Anodized Aluminum Alloy
Seal Material	Silicon Carbide
Certification	ISO 9001
Origin	USA

4. Wide Application Scenarios

 

This rotary union is installed at the spindle end of CNC equipment to deliver cooling and lubricating medium to high-speed rotating cutters. It is widely applied in multiple precision manufacturing industries: automotive new energy parts processing, mold high-speed machining, aerospace precision components, 3C electronic hardware, hydraulic valve deep hole processing and other fields.

In automated production lines with frequent tool changes and intermittent operation, the Pop-off dry-running structure can give full play to its advantages, effectively reducing unexpected shutdown failures caused by seal damage, improving the overall equipment operation rate and bringing stable economic benefits to manufacturing enterprises.

5. Packaging & After-sales Service

 

Each Deublin 902-110-165 rotary union is packed in an original anti-static shockproof carton with customized foam lining inside to prevent extrusion and collision damage during long-distance sea and land transportation. Each product has an independent production batch number to realize original authenticity traceability and avoid counterfeit products.

We provide 12-month warranty service for all genuine products. We can supply matching seal repair kits and other 902 series alternative models to meet one-stop purchasing needs. Our professional technical team provides free model selection, installation guidance and daily maintenance suggestions to help customers correctly install and use rotary unions and maximize the service life of machine tool accessories.