Keyless Locking Assembly
Yuxin Machinery keyless locking assemblies are precision power transmission components designed for secure shaft-to-hub connections across a wide range of industrial machinery. Engineered to ensure precise power transmission, these assemblies also provide reliable component positioning, vibration dampening, and coaxiality compensation.
Built from high-grade alloy steel, our locking devices feature a precise, compact structure that facilitates easy installation and removal without damaging the shaft or hub. Available in multiple standard and custom specifications, they deliver stable, long-term performance in high-speed and heavy-duty applications.
Yuxin keyless locking assemblies operate on a mechanical interference fit generated by frictional force.
- As the locking bolts are tightened, the inner and outer tapered rings are drawn together, sliding against each other axially.
- This sliding motion forces the inner ring to contract firmly around the shaft, while the outer ring expands against the hub.
- The resulting high-capacity radial pressure creates a powerful, uniform frictional lock that securely transmits torque and axial loads.
Note: The precise 1:100 to 1:50 taper ratio ensures a reliable self-locking effect, maintaining consistent holding power even under continuous dynamic loads.
| Comparison Item | Keyless Locking Assembly | Standard Parallel Key |
| Connection Method | Keyless friction locking | Keyway and key |
| Centering Accuracy | High concentricity (≤0.02 mm) | General accuracy, around (±0.1 mm) |
| Shaft Strength | No keyway required, helping preserve shaft strength | Keyway machining reduces shaft strength |
| Installation & Removal | Easy to install, remove, and reuse | Often requires fitting, repair, or destructive removal |
| Overload Protection | Controlled slip can help protect connected equipment | No slip protection; key damage may occur under overload |
| Operation Speed | Medium- to high-speed applications, up to (≤6000r/min) | Medium- to low-speed applications |