Universal Rotary Union for Tower Crane

Description

Product Overview

The Rotary Union for Tower Crane is an essential component designed specifically for tower crane spray systems, enabling smooth fluid transfer between stationary and rotating parts. This specialized rotary joint ensures a continuous water or fluid supply to the crane’s rotating arm for efficient dust suppression, fire protection, and cooling purposes during construction projects. It supports 360-degree rotation without hose twisting or leakage, ensuring reliable operation of crane hydraulic circuits, spray systems, and other rotating fluid applications.

Our rotary unions are engineered for heavy-duty applications, offering reliable performance, superior sealing, and excellent durability under harsh construction site conditions. Built with premium materials and advanced sealing technology, the rotary union provides stable operation and long service life, minimizing maintenance and downtime.

Key Features

360-Degree Continuous Rotation

Allows unrestricted rotation of the crane jib or slewing ring while maintaining uninterrupted fluid flow.

High-Pressure Fluid Transfer

Supports hydraulic oil, water, and air at pressures up to 300 bar (depending on model), suitable for tower crane hydraulic and spray systems.

Durable Construction

Forged brass or stainless steel housing provides excellent corrosion resistance and mechanical strength in tough outdoor conditions.

Balanced Mechanical Seals

Advanced seal technology minimizes leakage and friction, extending operational life and reducing downtime.

Self-Supported Design

Integrated bearing support eliminates the need for external bearings, simplifying installation and reducing system complexity.

Multiple Channel Options

Available in single or multi-passage designs to accommodate complex fluid circuits.

Standard Threaded and Flanged Connections

Compatible with NPT, BSP, and flange standards for easy installation and replacement.

About Our Company

We are a leading manufacturer specializing in high-quality rotary unions and rotary joints for industrial and construction machinery. We engineer our products with precision and durability to meet the rigorous demands of tower crane hydraulic and spray systems. Committed to innovation and customer satisfaction, we provide customized solutions and responsive technical support worldwide.

Application of Universal Rotary Union for Tower Crane

Universal rotary unions are critical components in tower crane systems, enabling the safe and efficient transfer of hydraulic fluid, air, or water between stationary and rotating parts. These unions are designed to handle the high loads, continuous rotation, and environmental challenges commonly found in construction site operations.

1. Slewing Mechanism Fluid Transfer

The rotary union facilitates fluid transfer to the hydraulic motors in the slewing ring, which is responsible for rotating the upper structure of the crane. It ensures uninterrupted 360-degree rotation while maintaining a leak-free seal under high pressure. This is essential for precise crane positioning and load handling.

2. Luffing and Hoisting Hydraulic Systems

Universal rotary unions allow hydraulic oil to pass through rotating joints to control the luffing jib and hoisting winch mechanisms. These functions require consistent fluid power even during dynamic motion. The union ensures stable hydraulic flow, preventing pressure drops or system failure during peak operation.

3. Anti-Collision and Sensor Integration

Modern tower cranes are equipped with intelligent systems such as anti-collision devices and load sensors. Rotary unions with integrated electrical slip rings or signal channels allow power and data signals to transmit reliably from fixed platforms to rotating turrets, supporting safe and smart crane operations.

4. Cab Rotation and Operator Comfort

In some tower cranes with rotating operator cabins, universal rotary unions help manage the flow of compressed air or cooling liquids into the cabin area. This enhances operator comfort and system efficiency, especially in high-temperature working environments.

5. Water Cooling or Dust Suppression Systems

Some tower cranes incorporate water-cooling systems for brake units or use water lines for dust suppression. Rotary unions enable seamless flow of water through rotating sections without hose tangling or leakage, especially critical in construction zones with heavy airborne particles.

Why Choose Our Rotary Unions for Tower Cranes?

1. Industry-Leading Durability

We construct our rotary unions from corrosion-resistant alloys and equip them with industrial-grade seals to withstand extreme conditions such as dust, moisture, and mechanical stress on construction sites.

2. Precision Fluid Transfer

Our advanced internal design ensures minimal fluid pressure drop, delivering a consistent and controlled flow to the crane’s spraying system, thus maximizing spray effectiveness and minimizing water wastage.

3. Low Maintenance & Easy Integration

We design our rotary unions for user convenience, enabling easy installation and minimal maintenance, which reduces downtime and enhances overall project efficiency.

4. Customization Options

We offer a range of sizes, port configurations, and materials to meet the specific requirements of our customers. Custom designs are available for specialized applications or unique crane models.

FAQ

Q1: What fluids can be used with the rotary union?

A: Our rotary unions support a wide range of fluids, including water, hydraulic oils, anti-freeze solutions, and other non-corrosive fluids compatible with the seals.

Q2: Can the rotary union be customized for different tower crane models?

A: Yes, we provide various sizes and port configurations. Custom designs are also available upon request to fit unique crane specifications.

Q3: How often should maintenance be performed?

A: Maintenance frequency depends on usage and site conditions, but a general guideline is to inspect every 3 to 6 months and replace seals or bearings as needed.

Q4: What is the maximum operating pressure?

A: Our rotary unions typically support pressures up to 25 MPa (250 bar), but specifications vary by model.

Q5: Is installation complicated?

A: Installation is straightforward with standard mounting options and clear guidelines. Our technical support team can assist with any specific installation requirements.

Conclusion

For reliable, leak-free, and durable hydraulic and spray fluid transfer in tower cranes, our Rotary Union for Tower Crane offers unmatched performance and value. Engineered for harsh environments and continuous 360-degree rotation, it ensures operational efficiency and reduces maintenance downtime.

Order now to enhance your tower crane’s hydraulic and spray system performance with our premium rotary union solutions.