High-end constant-fluid couplings for global industrial applications

Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. Unveils Premium Range of Constant Fill Fluid Couplings for Global Industrial Applications

Dalian-based manufacturer strengthens market position with advanced YOX series Constant Fill Fluid Couplings designed for heavy-duty torque transmission and overload protection

DALIAN, CHINA – February 28, 2026 – Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd., a rising force in the power transmission components industry, today announced the expansion of its product portfolio with a comprehensive range of high-performance Constant Fill Fluid Couplings. Leveraging the company's established expertise in precision manufacturing and its strategic location in Dalian's industrial hub, the new YOX series Constant Fill Fluid Couplings are engineered to meet the demanding requirements of mining, metallurgy, power generation, and material handling applications worldwide .

 Engineering Excellence in Fluid Power Transmission

As industries increasingly prioritize equipment protection and energy efficiency, the role of Constant Fill Fluid Couplings has become critical in modern mechanical drive systems. Dalian Mairuisheng's latest product line addresses this demand with innovative design features that ensure reliable performance under extreme operating conditions.

The Constant Fill Fluid Coupling, also known as a Torque-limiting hydraulic coupling in technical specifications, operates on the principle of hydrodynamic power transmission using oil as the working medium . Unlike mechanical couplings, these devices provide smooth acceleration, effective overload protection, and vibration dampening without direct mechanical connection between input and output shafts .

"Our engineering team has focused on optimizing the working chamber geometry and impeller blade profiles to achieve superior torque conversion efficiency," said the Chief Engineer at Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. "The result is a Constant Fill Fluid Coupling that delivers exceptional starting performance while protecting downstream equipment from shock loads and torsional vibrations."

 Comprehensive YOX Series Portfolio

The newly launched Constant Fill Fluid Couplings from Dalian Mairuisheng encompass a wide range of models covering power requirements from small-scale industrial machinery to heavy-duty mining conveyors. Drawing inspiration from industry-standard YOX series configurations, the company's Constant Fill Fluid Couplings feature:

- Robust Construction: High-grade cast iron and steel housings designed for durability in harsh environments

- Precision-Machined Impellers: Optimized pump wheel and turbine geometries for maximum hydrodynamic efficiency

- Multiple Model Options: Covering the spectrum from YOX200 to YOX1150 configurations to suit diverse power transmission requirements

- Customizable Configurations: Tailored shaft dimensions and mounting arrangements for specific customer applications

Each Constant Fill Fluid Coupling undergoes rigorous quality testing to ensure compliance with international standards, including ISO 9001 certification protocols . The company maintains substantial inventory across multiple SKUs, enabling rapid order fulfillment for wholesale and OEM clients .

 Technical Advantages of Constant Fill Fluid Couplings

The working principle of Dalian Mairuisheng's Constant Fill Fluid Couplings involves a sealed chamber containing a precisely measured amount of hydraulic oil. When the prime mover (electric motor or diesel engine) drives the input shaft, the pump wheel accelerates the oil outward by centrifugal force. This high-velocity oil then enters the turbine, transferring kinetic energy to the output shaft before returning to the pump wheel to complete the circulation cycle .

Key performance benefits of these Constant Fill Fluid Couplings include:

- Smooth Load Acceleration: Gradual torque build-up eliminates shock loading on driven machinery

- Effective Overload Protection: Under stall conditions, the Constant Fill Fluid Coupling simply slips, allowing the motor to continue rotating without damage

- Torsional Vibration Dampening: The fluid medium absorbs and isolates vibrations from both driving and driven equipment

- Multi-Motor Load Sharing: Ideal for applications requiring synchronized starting of multiple drives

- Minimal Maintenance: No mechanical wearing parts in the power transmission path

With efficiency ratings exceeding 95% under normal operating conditions (speed ratios above 0.95), these Constant Fill Fluid Couplings represent a cost-effective solution for continuous industrial operation .

 Application Versatility Across Industries

Dalian Mairuisheng's Constant Fill Fluid Couplings find extensive application across numerous industrial sectors. The YOX series Constant Fill Fluid Couplings are particularly well-suited for:

Mining and Minerals Processing: Belt conveyors, crushers, ball mills, bucket wheel excavators, and stacker-reclaimers benefit from the controlled starting characteristics and overload protection provided by Constant Fill Fluid Couplings .

Power Generation: Coal handling systems, including belt conveyors, crushers, and coal mills, utilize Constant Fill Fluid Couplings to manage high-inertia loads and protect expensive downstream equipment .

Metallurgical Industry: Steel plate handling equipment, forging manipulators, overhead cranes, and rolling mill auxiliaries rely on Constant Fill Fluid Couplings for smooth operation and shock load protection .

Material Handling: Port facilities, bulk terminals, and warehouse logistics systems employ Constant Fill Fluid Couplings in conveyor drives, stackers, and ship loaders to ensure reliable operation under varying load conditions.

"Our Constant Fill Fluid Couplings have been successfully deployed in cement plants, thermal power stations, and mining operations across Asia and Europe," noted the Sales Director at Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. "Customers consistently report reduced downtime, lower maintenance costs, and extended equipment life after switching to our Constant Fill Fluid Couplings."

 Market Trends Driving Constant Fill Fluid Coupling Demand

The global market for Constant Fill Fluid Couplings continues to expand as industries recognize the value of hydrodynamic power transmission in achieving operational reliability. Key trends influencing demand include:

Energy Transition Requirements: Renewable energy installations, particularly wind farms and solar tracking systems, require reliable transmission components capable of handling variable loads and environmental conditions .

Automation and Industry 4.0: Smart factories increasingly specify Constant Fill Fluid Couplings with condition monitoring capabilities to enable predictive maintenance strategies and minimize unplanned downtime.

Supply Chain Resilience: Post-pandemic, manufacturers are diversifying supplier relationships, creating opportunities for established players like Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. to expand their global footprint .

Infrastructure Development: Government investments in transportation, mining, and energy infrastructure worldwide drive demand for heavy machinery equipped with Constant Fill Fluid Couplings.

 Quality Assurance and Manufacturing Capability

Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. operates state-of-the-art manufacturing facilities equipped with CNC machining centers, balancing machines, and comprehensive testing equipment. Every Constant Fill Fluid Coupling produced undergoes:

- Dimensional inspection using coordinate measuring machines

- Dynamic balancing to ISO 1940 standards

- Hydrostatic pressure testing of all sealed chambers

- Performance verification on dedicated test benches

The company's commitment to quality extends to material selection, with all Constant Fill Fluid Couplings manufactured from certified raw materials meeting international specifications . This dedication to excellence has earned Dalian Mairuisheng recognition as a preferred supplier to OEMs and industrial distributors across multiple continents.

 Global Reach and Customer Support

With a wholesale network spanning Asia and Europe, Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. serves customers through multiple channels . The company's business model emphasizes:

- Technical Support: Engineering assistance for application selection and installation

- After-Sales Service: Warranty coverage and spare parts availability

The company's location in Dalian—a major industrial and port city in northeastern China—provides significant logistical advantages for exporting Constant Fill Fluid Couplings to global markets. Proximity to international shipping routes ensures efficient transportation and timely delivery to customers worldwide.

 Commitment to Sustainable Manufacturing

Aligned with China's carbon neutrality goals, Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. has implemented sustainable practices in its production of Constant Fill Fluid Couplings . These initiatives include:

- Utilization of recycled steel in casting processes where specifications permit

- Energy-efficient machining operations with optimized cutting parameters

- Waste reduction programs targeting coolant and cutting fluid consumption

- Eco-compliance documentation supporting customer ESG reporting requirements

The company's Constant Fill Fluid Couplings contribute to sustainability in customer operations as well, enabling energy savings through improved power transmission efficiency and reduced maintenance requirements.

 Future Development Roadmap

Looking ahead, Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. has outlined strategic initiatives to strengthen its position in the global Constant Fill Fluid Coupling market:

Product Innovation: Development of next-generation Constant Fill Fluid Couplings incorporating advanced materials and optimized hydrodynamic profiles for enhanced efficiency and power density.

Digital Transformation: Launch of an e-commerce platform enabling online ordering, order tracking, and technical documentation access for wholesale clients .

Smart Coupling Technology: Integration of IoT sensors into Constant Fill Fluid Couplings to enable real-time monitoring of operating parameters and predictive maintenance alerts .

 Conclusion

As global industries continue to demand higher reliability, improved safety, and greater efficiency from their material handling and processing equipment, the importance of quality Constant Fill Fluid Couplings cannot be overstated. Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. stands ready to meet these challenges with its comprehensive range of YOX series Constant Fill Fluid Couplings, backed by engineering expertise, manufacturing excellence, and customer-focused service.

"We invite industrial distributors, OEMs, and end-users worldwide to experience the difference that quality Constant Fill Fluid Couplings can make in their operations," concluded the company spokesperson. "Whether you require standard configurations or customized solutions, Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. has the capability and commitment to be your trusted partner in power transmission."

For more information about Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. and its complete line of Constant Fill Fluid Couplings, including detailed specifications, dimensional drawings, and application engineering support, please contact the company directly or visit the official website.

About Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd.

Headquartered in Dalian, China—a premier industrial innovation hub—Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd. specializes in the development, production, and distribution of high-quality power transmission components . The company serves industries ranging from heavy machinery and mining to energy and marine engineering, with a commitment to precision engineering, reliable performance, and customer satisfaction.

Media Contact:

Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd.

Email: info@mrscouplings.com

Tel: +86 13394151666

Website:https://www.mrscouplings.com/

Address: Dalian, Liaoning Province, China

Keywords: Constant Fill Fluid Coupling, hydraulic coupling, fluid drive, YOX series, torque limiter, overload protection, Dalian Mairuisheng Transmission Mechanism Equipment Co., Ltd., industrial transmission, power transmission components