Mounting a gear onto a shaft is a high-stress application where absolute rigidity is essential for the drivetrain’s efficiency and lifespan. Gears are subject to immense torsional load, shock forces, and continuous vibration. Conventional keyways and press fits often leave micro-gaps that lead to fretting corrosion, premature gear wear, and excessive backlash.A high-strength retaining compound eliminates this clearance, creating a rigid, monolithic assembly that transfers torque efficiently.
INCURE WeldLock™ 365 Retaining Compound
For securing highly loaded gears—where permanent retention and resistance to high temperatures are paramount—the WeldLock™ 365 provides the highest structural strength. Its superior shear resistance prevents rotational slip and maintains precise gear alignment (timing and backlash) throughout its operational life.
| Feature & Benefit | Technical Insight for Gear-to-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 Backlash Creep: Guarantees absolute torque transmission and prevents fretting corrosion in the drivetrain. |
| High Temperature Resistance | Withstands continuous operational temperatures up to 200∘C (392∘F), essential for gearboxes that generate significant friction 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 alignment and load distribution. |
| Gear Oil Immunity | Inert to common gear oils and synthetic lubricants, ensuring the integrity of the joint is protected within the gearbox environment. | Reliability Assured: The bond remains strong and intact, even when saturated with lubricants. |
Application Steps: Locking Gears for Maximum Drivetrain Integrity
Preparation (Essential): Thoroughly clean both the gear bore and the 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 gear bore. Ensure the compound completely covers the mating area.
Assembly: Slide or press the gear onto the shaft. Ensure the gear is seated correctly (axially and rotationally, if keyed) 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 subjecting the assembly to operational torque or heavy loads.
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 gear slippage and ensure your drivetrain assemblies are absolutely permanent.