The highly sensitive aluminum alloy bellows coupling is specially designed for applications with strict requirements on transmission accuracy and resp...
The bellows part of the coupling is the key to achieving high-precision transmission. It is made of thin-walled aluminum alloy tubes manufactured by s...
The coupling is mainly composed of two high-strength stainless steel hubs and a thin-walled stainless steel bellows in the middle. The unique bellows...
The coupling is mainly composed of two high-strength stainless steel hubs and a thin-walled stainless steel bellows in the middle. The unique bellows ...
A bellows coupling is a precision mechanical device connecting rotating shafts, using a flexible, thin-walled metal bellows to transmit torque while compensating for angular, radial, and axial shaft misalignment without backlash, making them ideal for high-accuracy motion control, servo systems, and encoders. They offer high torsional stiffness, low inertia, and wear-free operation, often featuring aluminum hubs and stainless steel bellows for responsive, precise performance.
Key Features & Function:
Torque Transmission: Connects shafts to transfer power with high torsional rigidity.
Misalignment Compensation: Flexes to absorb small angular, radial, and axial misalignments between shafts.
Zero Backlash: The bellows design ensures precise positioning without lost motion, crucial for accuracy.
Low Inertia: Lightweight construction, often with aluminum hubs, allows for quick acceleration and responsiveness.
High Performance: Suitable for high speeds and dynamic applications, with characteristics tunable by bellows design (e.g., number of convolutions).
Typical Applications:
Servo motor connections
Encoder drives
Actuators (e.g., ball screw drives)
Robotics and automation
Construction:
Hubs: Aluminum or steel, connecting to shafts via set screws, clamps, or keyways.
Bellows: Made from high-strength stainless steel, with single or multiple walls.
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READ MOREMetal bellows couplings are precision mechanical devices designed to connect rotating shafts while transmitting torque efficiently. They are engineered with a flexible bellows structure, allowing them to compensate for angular, radial, and axial misalignments without backlash. This makes them ideal for high-precision motion control applications, including servo systems, encoders, and robotics.
These couplings are widely used in industries where accuracy, responsiveness, and reliability are critical. They combine high torsional stiffness, low inertia, and wear-free operation, providing consistent performance over long periods.
Stainless steel bellows couplings feature high-strength metal bellows capable of flexing to absorb shaft misalignments. The stainless steel material provides excellent corrosion resistance, high fatigue life, and superior durability, making them suitable for harsh environments or applications requiring frequent start-stop cycles.
Aluminum alloy bellows couplings are lightweight and ideal for applications where low inertia is essential. Their aluminum hubs allow for rapid acceleration and high-speed operation, while the flexible bellows compensates for minor misalignments between connected shafts.
Metal bellows couplings, whether stainless steel or aluminum alloy, offer several performance advantages for mechanical systems:
| Torque Transmission | High torsional rigidity ensures efficient power transfer between shafts. |
| Misalignment Compensation | Absorbs angular, radial, and axial misalignments to prevent stress on connected equipment. |
| Zero Backlash | Ensures precise motion control without lost motion or errors. |
| Low Inertia | Lightweight construction allows rapid acceleration and high responsiveness. |
| Durable Construction | Stainless steel or aluminum alloy components provide long-lasting, wear-free performance. |
Metal bellows couplings are widely used in industries requiring high-precision motion control and reliable torque transmission. Typical applications include:
Jiangsu Rokang Heavy Industry Technology Co., Ltd. is a leading manufacturer of stainless steel and aluminum alloy bellows couplings in China, with fixed assets exceeding 80 million yuan. The company has a professional team specializing in mechanical design, precision manufacturing, heat treatment, and welding, supported by a one-stop complete set of processing facilities and comprehensive quality inspection systems, including measurement, physical and chemical, and dynamic testing.
Rokang has long focused on the research and development of advanced couplings, including ball cage constant velocity universal couplings, cross shaft universal couplings, and drum gear couplings. The company collaborates with military and civilian research institutes, such as the Power Engineering Department of the PLA Naval Academy, and has continuously expanded into precision, heavy-load, and high-speed applications.
Its products have successfully replaced foreign brands with superior performance, achieving international advanced process standards. Applications span lifting and transportation, metallurgical machinery, metal rolling, engineering machinery, mining, petrochemical, textile machinery, military ships, armored vehicles, railway locomotives, and special vehicles. Rokang’s products are exported to Europe, America, Russia, the Middle East, India, and other regions.
Rokang continues to innovate in ball cage constant velocity universal couplings, developing solutions for screw pumps, ball spline couplings, coaxial double-speed, and dual-direction applications. With a commitment to “quality first, honest management, and customer priority,” Jiangsu Rokang Heavy Industry Technology Co., Ltd. provides high-quality couplings, competitive prices, and attentive service to support global clients and high-performance machinery.
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