When a shaft surface is worn due to fretting, bearing failure, or repeated disassembly, it loses its original press-fit tolerance. Shaft repair requires a retaining compound that is High Strength to restore structural rigidity, but critically, possesses a large gap-filling capability to compensate for the lost material and uneven surface of the worn shaft.
This is a High Strength, Large-Gap Permanent Repair application.
INCURE WeldLock™ 356 Retaining Compound (Metallic Grey)
The INCURE WeldLock™ 356 Retaining Compound is the definitive, high-viscosity solution designed specifically for repair and restoration applications involving worn parts. Its thick consistency and superior gap-filling ability make it ideal for rebuilding lost material on a worn shaft before reinstallation.
| Key Feature | Performance for Worn Shaft Repair |
| High Strength, High Viscosity | Creates a robust, high-strength bond that effectively fills the gap and permanently restores the fit, resisting shear and rotational forces. |
| Large Gap Fill (Up to 0.5mm) | Essential for worn components. Fills the large, uneven diametral clearances on a damaged shaft, restoring a tight, secure press-fit tolerance. |
| Repair & Restoration Focus | Specifically designed for the repair and refitting of worn cylindrical parts (shafts, keyways, housings), extending the service life of expensive components. |
| Temperature Resistance (150∘C) | Maintains structural integrity under sustained operational heat generated in machinery. |
Application Steps: Repairing and Reinstalling Worn Shafts
For optimal structural restoration and permanent retention of the shaft, follow these steps:
1. Surface Preparation (Critical)
- Clean: Thoroughly clean the worn shaft surface and the mating component bore. Surfaces must be absolutely free of oil, grease, and contaminants. Use an industrial solvent (e.g., acetone) and wipe dry.
- Roughen: For best adhesion on the worn area, lightly roughen the shaft surface using light abrasion (sandpaper or grit) to provide a mechanical key for the compound.
- Activate (If Needed): If the assembly time is critical or if temperatures are low, apply a chemical activator to the bond surfaces.
2. Product Application
- Apply: Apply a liberal, continuous coating of WeldLock™ 356 (due to its high viscosity and gap-filling) to the entire worn section of the shaft.
- Ensure Coverage: Ensure the thick paste consistency completely covers the damaged area to fill the largest gaps.
3. Assembly and Curing
- Assemble: Immediately slide or press the mating component (e.g., bearing, gear, sleeve) onto the repaired shaft section. Ensure the components are aligned correctly before the compound fixtures.
- Wipe Excess: Remove any excess adhesive visible outside the joint immediately after assembly.
- Cure: Allow the assembly to fixture (typically 10 minutes). Allow a full 24 hours for the compound to reach maximum structural strength before placing the component back into service.