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Machine Tool Industry


Nearly all modern machine tools and machining centers are equipped with so-called “flood coolant”. High-speed cutting tools require both cooling and lubrication to reduce the rate of tool wear and to prevent over heating which degrades the tool’s strength. For many machining operations, such as milling or hole drilling, flood-coolant systems are less effective at delivering coolant fluid to the cutting edge.

In machining centers with through-spindle coolant (TSC), coolant fluid is conducted directly through the cutting tool to cool the cutting edge, reduce friction and remove chips. Coolant flows axially through a rotating union into the spindle and toolholder directly to the heat surface. Compared to flood-coolant systems, TSC pays for itself in terms of lower operating costs for tools and coolant.

Deublin offers the greatest variety of seal technologies and mounting configurations to fit every machining application requirement.

Rotating Unions may be used to transmit coolant, cutting oil, MQL, pressurized air in a bearingless or bearing supported configuration. Deublin seal technologies include Pop-Off, Multi-media, AutoSense and a variety of other advanced technologies for all applications.

Besides coolant delivery, Deublin unions are used for chucking, tool sensing, rotary index table and other machine tool applications. The selections in the website represent a small range of standard products. For critical applications, please contact Deublin.

Rotary Union Design Factors and Sealing Technology for Machining Center Applications White Paper

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Most common media used for cooling in a variety of applications including printing, plastics, tire and rubber, steel, and aluminum casting

Media used for pneumatic applications that transmit air at specific pressures or volume, including clutch, brake, machine tool, holding, clamping

Media used for applications that deliver fluid pressure for actuation, clamping, and, indexing
Most common media for machine tool applications; through-spindle coolant dispenses at the cutting surface for greater efficiency than flood cooling
Minimum quantity lubrication or MQL is a mixture of air and coolant prevalent in machine tool applications

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Welcome to DEUBLIN >

Welcome to Deublin.com!

Since 1945, Deublin has grown from a small garage shop to the world’s largest manufacturer of rotary unions (rotating unions). Our worldwide distribution network allows OEM’s all over the world to specify Deublin rotary unions when purchasing equipment made in another country. Wherever you’re located, Deublin has a stocking distributor nearby to meet your fluid handling requirements—quickly. Rotary unions must accommodate a broad range of materials, viscosities, temperatures, pressures and speeds. That’s why the Deublin rotary union product line offers over 500 standard rotary unions, over 3,000 separate models, and more than 6,000 individual components to handle them.

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