Diaphragm Coupling

Diaphragm couplings are highly flexible, torsionally stiff couplings designed to transmit torque while accommodating misalignment in mechanical systems. They consist of one or more flexible diaphragms connected to hubs, offering zero backlash, high precision, and exceptional performance in demanding applications such as aerospace, robotics, and industrial machinery. Key Product Parameters: Our diaphragm couplings are engineered with precision to meet various industrial standards. Below are the detailed specifications presented in list and table formats for clarity. List of Key Features: - Material: Manufactured from high-strength stainless steel (e.g., AISI 304, 316) or aluminum alloys for corrosion resistance and durability. - Torque Capacity: Ranges from 5 Nm to 5000 Nm, depending on size and design. - Maximum Speed: Up to 40,000 RPM for high-speed applications. - Operating Temperature: -50°C to +200°C, suitable for extreme environments. - Misalignment Compensation: Accommodates angular misalignment up to 3 degrees, parallel misalignment up to 2 mm, and axial displacement up to ±1 mm. - Backlash: Zero backlash design ensures precise motion control. - Standards Compliance: Meets ISO 9001, AGMA, and other international standards for quality assurance. Table of Standard Sizes and Specifications: | Size Model | Outer Diameter (mm) | Bore Range (mm) | Max Torque (Nm) | Weight (kg) | |------------|---------------------|-----------------|-----------------|-------------| | DC-10 | 50 | 6-20 | 50 | 0.5 | | DC-20 | 80 | 10-30 | 200 | 1.2 | | DC-30 | 120 | 15-50 | 800 | 3.0 | | DC-40 | 150 | 20-60 | 2000 | 5.5 | | DC-50 | 200 | 25-80 | 5000 | 10.0 | This table provides a quick reference for selecting the appropriate coupling based on application requirements. Custom sizes are available upon request to suit specific needs. Applications of Diaphragm Couplings: Diaphragm couplings are widely used in industries where precision and reliability are critical. Common applications include: - Servo motors and stepper motors in automation systems. - Pumps and compressors in oil and gas sectors. - Turbines and generators in power generation. - Robotics and CNC machinery for accurate positioning. - Aerospace systems, such as flight control actuators. Advantages Over Other Coupling Types: Compared to gear couplings or elastomeric couplings, diaphragm couplings offer several benefits: - No maintenance required due to the absence of lubricated parts. - Higher torsional stiffness for better response in dynamic systems. - Ability to handle high speeds and temperatures without degradation. - Longer service life with minimal wear, reducing downtime. Installation and Maintenance Tips: Proper installation is crucial for optimal performance. Ensure shafts are aligned within specified tolerances during mounting. Regular inspections should check for signs of wear, such as cracks or deformation in the diaphragms. No lubrication is needed, making maintenance straightforward. Diaphragm Coupling FAQ: What is a diaphragm coupling? A diaphragm coupling is a type of flexible coupling that uses one or more thin, flexible diaphragms to transmit torque and accommodate misalignment between connected shafts, providing high precision and zero backlash. How does a diaphragm coupling work? It works by flexing the diaphragms elastically to absorb misalignments (angular, parallel, or axial) while maintaining a rigid connection for torque transmission, ensuring smooth operation without play. What are the main advantages of using a diaphragm coupling? Key advantages include high torsional stiffness, zero backlash, no maintenance requirements, ability to handle high speeds and temperatures, and long service life with reliability in critical applications. Can diaphragm couplings be used in high-temperature environments? Yes, they are designed to operate in temperatures ranging from -50°C to +200°C, making them suitable for high-temperature applications like engines or industrial processes. How do I select the right size diaphragm coupling for my application? Consider factors such as torque requirements, shaft sizes, misalignment limits, and operational speed. Refer to the product specifications table or consult with our engineering team for customized solutions. What types of misalignment can a diaphragm coupling accommodate? It can accommodate angular misalignment up to 3 degrees, parallel misalignment up to 2 mm, and axial displacement up to ±1 mm, depending on the model and size. Are diaphragm couplings maintenance-free? Yes, they are typically maintenance-free because they have no moving parts that require lubrication, but periodic visual inspections are recommended to check for damage or wear. What materials are used in diaphragm couplings? Common materials include stainless steel (e.g., AISI 304 or 316) for corrosion resistance and strength, or aluminum alloys for lightweight applications, ensuring durability and performance. Can I customize a diaphragm coupling for specific needs? Absolutely, we offer custom designs tailored to unique requirements, such as special bore sizes, materials, or torque capacities. Contact our support team for more details. How long do diaphragm couplings last? With proper installation and within specified operational limits, they can last for many years, often outlasting other coupling types due to minimal wear and robust construction.