Zero-Backlash Locking Precision: DLZG Jaw Coupling with Expansion Sleeve

The DLZG Series Stainless Steel Jaw Coupling with Integrated Expansion Sleeve represents the pinnacle of high-velocity, backlash-free rotational power transmission. Engineered explicitly for dynamic motion control loops, servo drives, and high-speed CNC spindle shafts, the DLZG jaw coupling uses a keyless expansion sleeve locking design. This structure guarantees a 100% reliable friction connection between the shaft and the hub, completely eliminating the risk of reverse mechanical play. It provides flawless positioning precision for high-torque encoder connections and automated machinery drives.

Built with a flexible detached layout for easy installation, the primary structural hubs can be customized in premium Stainless Steel or specialized Polished 45# Carbon Steel to perfectly fit your operational load profiles. Sandwiched at the center is a high-density, German-imported polyurethane elastic star insert. This advanced polymer layer dampens sudden motor shocks, resists heavy wear, cuts electrical current paths, and compensates for radial, angular, and axial alignment errors.

Core Product Advantages / Unique Selling Points

• Integrated Keyless Expansion Sleeve Design: The internal expansion mechanism expands uniformly around the circumference of the shaft when tightened, creating a secure connection that distributes stress evenly.

• Absolute Zero Backlash Construction: Engineered for high precision in alternating forward and reverse rotations, making it ideal for robotic positioning, encoders, and indexing servo motors.

• Premium German-Imported Polyurethane Inserts: Equipped with top-tier star-shaped polyurethane inserts that offer excellent wear resistance, oil isolation, and electrical insulation properties.

• Excellent Alignment Error Compensation: The flexible elastic center element actively cushions system vibration while absorbing concurrent angular, axial, and radial shaft deviations.

• Strict H7 Standard Bore Precision: Internal diameters are ground to an H7 tolerance level to ensure excellent concentricity and a firm, concentric hold on modern drive spindles.

• Polished Finish and Durable Build: High-grade base metallurgy paired with a clean polished surface treatment provides good wear resistance and long operational life under cyclic loads.

• Comprehensive Custom Footprint Support: As referenced in our specifications in image_827e48.png, we provide full non-standard manufacturing adjustments for dimensions like DLZG-80*114, DLZG-95*126, and DLZG-105*140 tailored to your blueprints.

Technical Specifications Table