DBL21 High-Precision Double Diaphragm Couplings: Engineered for High Torque & Zero Backlash

The DBL21 Series is a premier membrane-type coupling designed for high-performance motion control. Utilizing a locking assembly connection, it ensures a secure, keyless shaft attachment that is easy to install and disassemble. Engineered with a robust 45# steel body and multi-layered 304 stainless steel disc packs, the DBL21 provides maximum torsional stiffness while protecting sensitive motor bearings from misalignment.

Core Product Advantages

• High-Strength 45# Steel Body: Crafted from premium round steel for superior rigidity and high torque transmission with low inertia.

• H7 Precision Bore: Internal bores are machined to H7 tolerance for exceptional concentricity and accurate shaft fitment.

• 304 Stainless Steel Disc Packs: Durable circular or square diaphragms offer high flexibility, rust resistance, and a long service life.

• Zero Backlash Performance: Essential for precision positioning, ensuring identical rotational characteristics in both clockwise and counter-clockwise directions.

• Advanced Misalignment Compensation: The flexible double-disc structure compensates for axial, radial, and angular deviations simultaneously.

• Versatile Locking Options: Available in Locking Assembly, Taper Sleeve , and Keyway versions to suit diverse mechanical requirements.

Technical Specifications Table