Deublin Rotary Union 355 Series Replacement

Dann Hydraulic is a professional manufacturer specializing in Deublin Rotary Union replacement solutions, providing high-quality compatible rotary unions for CNC machine tools, machining centers, drilling machines, grinding machines, and industrial air applications. Our Deublin 355 Series Rotary Union replacements are designed according to the original dimensions and performance requirements of Deublin 355 models, offering reliable sealing performance, stable rotation, long service life, and cost-effective alternatives for global customers.

With years of experience in rotary union manufacturing, we support customers worldwide with OEM replacement solutions, customized designs, technical consultation, and fast delivery.

Whether you need a replacement for a worn Deublin 355 rotary union or require a customized coolant rotary joint for your machine application, Dann Hydraulic provides professional engineering support from design analysis to final testing.

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What Is Deublin Rotary Union 355 Series?

The Deublin 355 Series Rotary Union is a precision-engineered rotary joint mainly used for transferring air, cutting fluid, and other media between stationary supply systems and rotating machine components.

During CNC machining operations, high-speed rotating spindles require a continuous supply of air to control temperature, remove chips, and maintain machining accuracy. The rotary union acts as the critical connection component that allows fluid transfer while maintaining rotation.

Typical applications include:

• CNC machining centers
• CNC lathes
• Automatic drilling machines
• Milling machines
• Grinding equipment
• High-speed spindle cooling systems
• Metal cutting equipment

The 355 Series is widely recognized for compact structure, reliable sealing, and compatibility with demanding machining environments.

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Deublin 355 Series Rotary Union Replacement Solutions

As a professional rotary union manufacturer in China, Dann Hydraulic provides replacement solutions for various Deublin 355 Series models.

Our replacement rotary unions are manufactured based on:

• Original installation dimensions
• Shaft and housing interface requirements
• Port configuration
• Operating speed requirements
• Pressure and coolant conditions
• Customer machine application

We help customers reduce maintenance costs while maintaining reliable machine performance.

Compared with purchasing original imported rotary unions, our replacement solutions provide:

Cost Advantage

Manufactured directly from our factory, our Deublin 355 replacement rotary unions help customers significantly reduce procurement costs without compromising reliability.

Shorter Delivery Time

As a direct manufacturer, we maintain flexible production capacity and can provide faster delivery compared with overseas original brands.

OEM Compatibility

Our engineering team carefully analyzes original rotary union specifications to ensure dimensional compatibility and easy installation.

Technical Support

We provide professional support including:

• Product selection
• Installation guidance
• Failure analysis
• Customized rotary union development

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Engineering Experience Behind Our Deublin 355 Replacement Rotary Unions

At Dann Hydraulic, rotary unions are not simply assembled products. Each unit is manufactured through controlled machining, assembly, and testing processes.

Our production capabilities include:

Precision CNC Machining

The housing and rotating components are processed using high-precision CNC machining equipment to ensure:

• Accurate dimensions
• Smooth rotating surfaces
• Proper sealing alignment
• Reduced vibration during operation

Professional Seal Technology

The sealing system is one of the most important components of a rotary union.

Depending on application requirements, we provide sealing materials including:

• Silicon carbide seals
• Carbon graphite seals
• Tungsten carbide seals
• PTFE seals
• NBR seals
• FKM seals

Different seal combinations are selected according to:

• Coolant type
• Pressure level
• Rotating speed
• Temperature conditions

Strict Factory Testing

Before shipment, every rotary union is inspected through:

• Pressure leakage testing
• Rotation performance testing
• Seal performance inspection
• Dimensional inspection
• Air leakage testing

Our quality control process ensures every Deublin 355 replacement rotary union meets industrial application requirements.

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Applications of Deublin 355 Series Rotary Union Replacement

CNC Machining Industry

CNC machining requires stable coolant delivery during high-speed spindle operation.

Our rotary unions support:

• Milling machines
• CNC turning centers
• Vertical machining centers
• Horizontal machining centers

They help maintain:

• Cutting temperature control
• Tool life improvement
• Machining accuracy

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Automotive Manufacturing

Automotive component manufacturers use coolant rotary unions in:

• Engine part machining
• Transmission component production
• Precision metal processing

Reliable coolant circulation improves production efficiency and reduces downtime.

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Mold and Die Manufacturing

Precision molds require stable machining conditions.

A high-quality coolant rotary union helps maintain:

• Consistent cutting performance
• Better surface finish
• Reduced thermal deformation

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Why Choose Dann Hydraulic as Your Deublin 355 Series Alternative Supplier?

Professional Rotary Union Manufacturer

Unlike trading companies, Dann Hydraulic focuses on rotary union design and manufacturing.

Our products cover:

• Coolant rotary unions
• Hydraulic rotary joints
• Pneumatic rotary unions
• Multi-passage rotary unions
• High-speed rotary unions
• Customized rotary joints

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Factory Direct Supply

Working directly with our factory provides:

• Competitive pricing
• Flexible customization
• Faster communication
• Engineering support

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Experienced Technical Team

Our engineers have practical experience solving rotary union problems in different industries, including:

• CNC machining
• Textile machinery
• Paper production
• Steel processing
• Rubber equipment

We understand that selecting the correct rotary union requires more than matching dimensions. Application conditions such as speed, pressure, medium, and temperature must also be considered.

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Global Export Experience

Dann Hydraulic supplies rotary union replacement solutions to customers worldwide, including:

• Europe
• North America
• Russia
• Middle East
• Southeast Asia

We understand international procurement requirements and provide:

• Technical documentation
• Product drawings
• Customized solutions
• Export packaging

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Frequently Asked Questions (FAQ)

What is a Deublin 355 Series Rotary Union used for?

The Deublin 355 Series Rotary Union is mainly used for transferring coolant and cutting fluid into rotating CNC machine components while maintaining continuous rotation.

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Can Dann Hydraulic replace Deublin 355 rotary unions?

Yes. We manufacture compatible replacement rotary unions designed according to original Deublin 355 specifications and customer application requirements.

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Are Deublin 355 replacement rotary unions suitable for CNC machines?

Yes. Our replacement units are widely used in CNC machining centers, milling machines, drilling machines, and other coolant applications.

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How long is the service life of a Deublin 355 replacement?

Service life depends on operating speed, coolant quality, pressure, installation conditions, and maintenance. Proper selection and installation significantly improve service performance.

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Can you provide customized rotary unions?

Yes. We provide OEM and customized rotary union solutions according to drawings, samples, and machine requirements.

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Contact Dann Hydraulic for Deublin 355 Series Rotary Union Solutions

If you are looking for a reliable Deublin Rotary Union 355 Series replacement manufacturer, Dann Hydraulic can provide professional technical support and competitive factory-direct solutions.

Send us your:

• Original rotary union model
• Machine type
• Working pressure
• Rotation speed
• Media information

Our engineering team will help you select the right rotary union solution.