High-Precision Motion Control: DLZ, DSG & DLG Series High-Torque Diaphragm Couplings

The DLZ, DSG, and DLG Series High-Torque Single & Double Diaphragm Couplings (单双膜片夹紧联轴器) are engineered to provide maximum torsional rigidity and zero-backlash power transmission for high-demand servo systems and automated machinery lines. Utilizing premium 45# steel for the hub bodies and high-elasticity SUS304 stainless steel for the flexible disc elements, these couplings deliver an ideal balance of massive torque density and angular/axial misalignment compensation. Designed specifically for high-precision reversing applications like CNC feed axes, ball screw assemblies, and semiconductor positioning tables, our diaphragm series ensures absolute rotational synchronization with zero structural wind-up.

Core Product Advantages

• Ultra-High Torsional Rigidity: Engineered with advanced metallic disc mechanics to deliver extreme torsional stiffness, ensuring perfect rotational tracking and micro-accurate positioning control for high-speed servo loops.

• Premium Forged 45# Steel Hubs: Constructed from high-strength 45# carbon steel to ensure high load thresholds, superior mechanical yield strength, and excellent resilience under heavy start-stop cycles compared to aluminum alternatives.

• Imported SUS304 Stainless Steel Diaphragms: Outfitted with high-precision SUS304 spring steel disc packs that flex smoothly to compensate for parallel, angular, and axial assembly errors while maintaining exceptional torque handling capacity.

• True Zero-Backlash Connections: Features a completely integrated friction-clamping locking mechanism or integrated locking assembly, ensuring identical clockwise and counterclockwise rotational traits with no backlash slip.

• H7 Precision Bored Shaft Tolerances: Machined using precise CNC configurations to achieve a strict H7 tolerance finished bore, ensuring high concentricity, balanced high-speed running, and a secure grip on your driving shafts.

• Flexible Single & Double Disc Options: Available in DSG/DLZ single-diaphragm profiles for compact angular compensation, or DLG double-diaphragm layouts with an added spacer center-piece to manage large parallel offsets.

• Comprehensive Sourcing & Part Number Marking: Supports standard modular indexing (e.g., DLZ45-Outer Diameter x Length – d1Bore x d2Bore) along with custom keyway additions (marked with a trailing “K”) to fit existing system layouts.

Technical Specifications Table