A diaphragm coupling is a high-precision shaft connection solution designed for applications requiring high rigidity, zero backlash, and accurate torque transmission. Manufactured by Apexcoupling, our diaphragm coupling products are produced in mainland China with strong manufacturing capability, stable export supply, and full OEM, ODM, and OBM customization support.

This diaphragm coupling adopts a stepped disc structure that allows flexible compensation of angular and axial misalignment while maintaining extremely high torsional rigidity. Compared with traditional elastic couplings, diaphragm coupling solutions offer superior positioning accuracy and repeatability, making them ideal for servo motors and stepper motor systems.

The body of the diaphragm coupling is manufactured from high-quality S45C steel, ensuring excellent mechanical strength and long service life. The disc is made from spring steel or 304 stainless steel, providing outstanding fatigue resistance, corrosion resistance, and dust-proof performance. This structure enables the diaphragm coupling to withstand frequent forward and reverse rotation without performance degradation.

With a rated torque of up to 2000 N·m and a maximum speed of 5,000 RPM, this diaphragm coupling is suitable for high-load, high-speed transmission systems. The keyway diaphragm coupling design significantly increases torque transmission capacity, while the clamping screw fastening method ensures secure shaft connection without clearance.

This diaphragm coupling is specially designed for high-precision control systems, including CNC machines, automation equipment, robotics, packaging machinery, and industrial motion control systems. The zero-backlash characteristic of the diaphragm coupling allows precise shaft synchronization and accurate rotational control, even under demanding operating conditions.

As a professional coupling manufacturer and exporter, Apexcoupling offers diaphragm coupling products with low MOQ starting from one piece. Standard diaphragm coupling models are available for fast delivery, while non-standard diaphragm coupling customization can be provided according to drawings or application requirements.

Choosing Apexcoupling diaphragm coupling means choosing stable quality, competitive pricing, and reliable long-term supply. Our diaphragm coupling products help global B2B customers improve system accuracy, reduce maintenance costs, and enhance overall equipment performance.

✅ Key Advantages of Diaphragm Coupling

• High torsional rigidity and zero backlash

• Excellent fatigue resistance with steel disc structure

• Suitable for servo and stepper motors

• Keyway diaphragm coupling for high torque transmission

• OEM / ODM / OBM customization supported

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