Mounting a sprocket onto a drive shaft is a high-impact application, critical for chain-driven systems in heavy machinery, conveyors, and industrial equipment. This assembly must withstand immense torsional stress (torque), frequent shock loading as the chain engages, and high side loads. Keyways and press fits are prone to wear and fretting corrosion under these continuous dynamic forces. A retaining compound eliminates this internal clearance, creating a rigid, slip-free bond that maximizes power transmission and minimizes component wear.
INCURE WeldLock™ 365 Retaining Compound
For securing high-load sprockets—where permanent retention and resistance to heat are essential—the WeldLock™ 365provides the highest structural strength. Its superior shear resistance prevents rotational slip and ensures the sprocket maintains perfect alignment, maximizing chain life and efficiency.
| Feature & Benefit | Technical Insight for Sprocket-Shaft Assemblies | Conversion Value |
| Highest Strength (365) | Cures to an extremely high-shear strength, rigid plastic, providing maximum resistance to torsional slip and heavy shock loads. | Zero Slippage: Guarantees absolute, 100%torque transmission and prevents fretting corrosion. |
| High Temperature Resistance | Withstands continuous operational temperatures up to 200∘C (392∘F), necessary for high-speed drives that generate significant heat. | End the Heat Threat: Ensures the bond remains strong and rigid under maximum thermal load. |
| Fills Close Clearance Gaps | Ideal for components with an interference or true close-tolerance slip fit (less than 0.05 mm diametral clearance). | Maximizes Contact: Converts the fit into an integrated component, optimizing balance and concentricity. |
| Lubricant Immunity | Inert to chain oil and industrial lubricants, ensuring the integrity of the joint is protected even when saturated with oil. | Reliability Assured: The bond remains permanently intact throughout the drive’s operational life. |
Application Steps: Locking Sprockets for Maximum Drivetrain Integrity
Preparation (Essential): Thoroughly clean both the sprocket bore and the drive shaft surface. Remove all oil, grease, paint, and residue. Use a degreasing solvent (like acetone or brake cleaner) and wipe until both metal surfaces are perfectly dry.
Application: Apply a continuous, liberal bead of WeldLock™ 365 evenly around the shaft surface. Alternatively, apply it to the inside circumference of the sprocket bore. Ensure the compound completely covers the mating area.
Assembly: Slide or press the sprocket onto the shaft. Ensure the sprocket is seated correctly (axially) and wipe away any excess compound immediately.
Curing Time (Critical): Allow a minimum of 24 hours for the compound to reach full cure strength before applying load, engaging the chain, or running the drive at operational speeds.
Alternative Consideration (Worn or Large Gaps): If the bore-to-shaft clearance is larger (up to 0.25 mm), use INCURE WeldLock™ 356 (Metallic Grey). This compound is formulated with metallic fillers to tolerate larger gaps while still providing high retention strength.
Stop risking sprocket slippage and ensure your chain drive assemblies are absolutely secure and reliable.