A Coolant Rotary Union is a mechanical device designed to transfer coolant fluid—such as oil, water, or emulsions—from a stationary source into a rotating machine component without leakage or contamination. It plays a crucial role in CNC machines, milling spindles, lathes, and grinding systems, ensuring effective cooling, lubrication, and chip removal during machining operations.
Our coolant rotary unions are engineered for high-speed, high-pressure, and long-life performance, supporting the demanding needs of modern manufacturing environments.
Whether you need a single-passage union for basic coolant delivery or a multi-passage rotary joint for complex tool systems, our range provides the durability and precision you can rely on.
Leak-Free Operation:
Advanced mechanical seals ensure reliable sealing under high pressure, preventing coolant leakage and contamination.
High-Speed Capability:
Precision-balanced construction supports rotational speeds up to 20,000 RPM, ideal for spindle coolant systems.
Durable Construction:
Made with hardened steel, stainless steel, or aluminum housings, ensuring corrosion resistance and long service life.
Compact Design:
Optimized for installation in tight spaces on CNC spindles and machine heads.
Versatile Fluid Compatibility:
Compatible with water-based coolants, synthetic fluids, air-oil mist, and cutting emulsions.
Maintenance-Free Options:
Some models feature lifetime-lubricated bearings and non-contact seals for extended operation without maintenance.
Coolant rotary unions are widely used in industries requiring high-speed fluid transfer and temperature control, including:
CNC Machining Centers – Delivering coolant to cutting tools and spindles.
Lathe and Milling Machines – Ensuring precise cooling and lubrication.
Grinding and Drilling Equipment – Enhancing tool life and surface finish.
Automotive and Aerospace Manufacturing – Supporting critical tolerance machining.
Metalworking and Die Casting – Maintaining temperature stability during production.
OEM-Equivalent Performance:
Interchangeable with Deublin, Maier, Kadant, and DSTI models, but offered at a more competitive price.
Precision Manufacturing:
All components are CNC-machined to ensure consistent concentricity and minimal vibration.
Customizable Solutions:
Available in various thread sizes, port configurations, and seal materials to match your equipment requirements.
Quality Assurance:
100% factory-tested for pressure, speed, and leak performance before delivery.
To select the right Coolant Rotary Union, please provide:
Machine Type or Application (e.g., CNC spindle, lathe, or drilling machine)
Coolant Type (water, oil, emulsion, or air)
Speed and Pressure Requirements
Number of Passages Needed
Connection Type and Size
Our engineering team can provide custom designs and OEM replacements to ensure full compatibility with your system.
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Water Cooling Rotary Union: Product Details The Water Cooling Rotary Union is an essential component designed to facilitate the efficient transfer of cooling water in various industrial applications. Engineered for high performance and reliability, this rotary union ensures optimal fluid dynamics while preventing leaks, making it ideal for use in manufacturing processes, CNC machines, and…
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