Zero Backlash Torsional Stiffness: DNC Series Split Rigid Clamp Shaft Coupling

The DNC Series Split Rigid Clamp Shaft Coupling  provides a zero-backlash, high-rigidity solution for servo motor drives, high-precision positioning networks, and heavy-duty industrial automated motion setups. Unlike standard flexible connectors that sacrifice positional accuracy to handle misalignment, this rigid coupling delivers high torsional stiffness, making it perfect for applications that demand precise timing and seamless start-stop responsiveness.

Manufactured using structural 45# steel or high-strength aluminum alloy options, the two-piece split clamping design provides maximum wrapping surface contact around the shaft without causing marring or scoring. Engineered to support substantial industrial operational profiles, the DNC standard lineup effortlessly manages an impressive rated torque up to 2000 N·m and sustains smooth tracking speeds up to 5,000 RPM.

Core Product Advantages

• High-Strength 45# Steel Core Construction: Forged from high-grade 45# medium carbon structural steel to provide high yield strength, heavy shock resistance, and long-term dimensional stability.

• High-Strength Aluminum Alloy Option Available: Also available in high-strength aluminum alloy variants to reduce rotational weight and inertia while maintaining high structural performance.

• Two-Piece Split Clamp Geometry: The split hub architecture installs quickly from the side without requiring you to disassemble the entire shaft line, saving valuable plant maintenance time.

• Massive 2000 N·m Torque Handling Capacity: Built to handle demanding industrial servo configurations and heavy sudden reverses without experiencing deformation or slipping.

• Stable 5,000 RPM Operational Speeds: Precision balanced to spin smoothly up to 5,000 RPM, minimizing system vibration and protecting delicate motor bearings.

• True Zero-Backlash Rigidity: The solid rigid sleeve provides high torsional stiffness and zero rotational play, making it a perfect choice for precision CNC positioning, encoder linkages, and automated servo indexing lines.

• Mar-Free Cap Screw Fastening: High-tensile clamping screws distribute holding forces evenly across the shaft circumference, establishing a secure frictional grip without causing scratching or damage.

• Direct Factory OEM/ODM Scalability: Supported by Apexcoupling’s advanced source foundry, we provide custom bore profiles, keyways, special dimensions, and non-standard torque options tailored to your project prints.

Technical Specifications Table

Operational Engineering Notice: Because rigid couplings are solid sleeves, they do not accommodate angular, axial, or radial shaft misalignment. Connecting shafts must be precisely leveled and aligned during installation to prevent uneven wear, high vibration, and premature bearing failure.