Keyless Locking Devices: The High-Performance, Zero-Backlash Solution for Power Transmission Connections

In modern mechanical design, achieving a secure, precise, and maintenance-free connection between hubs and shafts is critical. Traditional keyed connections often introduce backlash, stress concentrations, and assembly complexities. Keyless Locking Devices provide a superior alternative, offering a rigid, concentric clamp that transmits torque through friction without keys or splines. The A2 Type Locking Assembly from Apex Coupling exemplifies this advanced technology, engineered from high-grade Stainless Steel SS304 to deliver reliable performance in the most demanding and hygienic environments.

Advanced Design for Maximum Grip and Easy Maintenance

The effectiveness of our keyless locking device lies in its intelligent, mechanically efficient design. The A2 type assembly consists of a precisely machined set of components: an open double-cone inner ring, an open double-cone outer ring, and two double-cone compression rings. When the assembly bolts are tightened, the conical surfaces interact, generating immense radial pressure uniformly around the shaft and bore. This creates a true keyless connection with zero clearance, eliminating fretting corrosion and stress points associated with keyways.

Compared to simpler designs, this configuration produces greater radial force from the same bolt torque, enabling it to transfer higher loads. A key user-friendly feature is the inclusion of disassembly screw holes (2-4 places) on the pressing rings. This allows for easy and non-destructive removal of the assembly, facilitating maintenance and component changes without damage—a significant advantage over traditional press-fit or keyed assemblies.

Technical Specifications and Versatile Application

Our keyless locking devices are built to meet rigorous industrial standards, offering broad compatibility and robust performance.

• Material & Quality: Constructed from SS304 Stainless Steel with a polished surface finish, these devices are corrosion-resistant, easy to clean, and perfect for industries like Food & Beverage, pharmaceuticals, and outdoor applications. Production is ISO9001 and BV certified, ensuring consistent high quality.

• Size & Capacity Range: Available for shaft and bore diameters from 19mm to 1000mm, with a corresponding maximum torque range from 298 N.m to 270,000 N.m. This wide range makes them suitable for everything from small conveyors to large industrial fans and mills.

• Customization & Support: We offer full OEM, ODM, and OBM services with a Minimum Order Quantity (MOQ) of just 1 piece. This allows for customization to fit unique application requirements seamlessly.

Ideal for Precision-Driven Industries

These locking assemblies are widely used in machinery where precision, hygiene, and reliability are non-negotiable. Primary applications include Packaging Machinery, Textile Equipment, Machine Tools, Printing Presses, and Conveyor Systems. By providing a rigid, backlash-free connection, they ensure accurate positioning, smooth operation, and extended service life for the entire drive train.

Simplify Your Design with Apex Coupling

Choosing Apex Coupling for your keyless locking device needs means partnering with a specialist in power transmission solutions. We provide not just a component, but a reliable connection technology backed by engineering support.

Ready to Eliminate Keys and Backlash? Contact us today for detailed dimension tables, 3D CAD models, and a quotation for our high-strength stainless steel keyless locking devices.