Retaining bushings within gearboxes are subjected to continuous, heavy stress, including high-impact shock loads, high-frequency vibration, and exposure to hot, corrosive gear oil. The bushing must be permanently secured to maintain precise gear alignment, shaft stability, and bearing support. Failure of the bushing retention is a critical mechanical failure, leading to gear destruction and massive downtime. This is a non-negotiable High Strength, Permanentapplication.
The optimal solution is a high-strength retaining compound engineered for maximum structural rigidity and superior thermal stability in drive train components.
INCURE WeldLock™ 347 Retaining Compound (Green)
The INCURE WeldLock™ 347 Retaining Compound is the definitive choice for securing bushings in gearboxes. It is a high-strength solution specifically designed to withstand the dynamic loads and superior thermal stability required in heavily loaded gear assemblies.
| Key Feature | Performance for Gearbox Bushings |
| High Strength, Fast Curing | Creates a monolithic bond that resists the immense impact shock and cyclical loads within the gearbox, preventing the bushing from spinning or shifting. |
| Temperature Resistance (175∘C) | Maintains full structural integrity under the sustained, elevated temperatures of hot gear oil, ensuring long-term reliability. |
| Ideal Gap Fill (Up to 0.15mm) | Perfectly secures standard press-fit bushings, eliminating the micromovement (fretting) that destroys the housing interface and compromises shaft stability. |
| Core Application | Specifically suited for securing gears, rotors, and shafts in motors and mechanical drives, matching the extreme demands of a gearbox. |
Application Steps: Installing Gearbox Bushings
For optimal performance and reliable retention of the gearbox bushings, follow these steps:
1. Surface Preparation (The Foundation)
- Clean: Thoroughly clean the housing bore and the bushing’s outer surface. Surfaces must be free of all gear oil, residue, and contaminants. Use an industrial cleaner or solvent (e.g., acetone) and wipe dry.
- Activate (If Needed): If using passive metals (like stainless steel or plated parts) or if the ambient temperature is below 15∘C (59∘F), apply a chemical activator to the bond surfaces and allow it to flash off completely.
2. Product Application
- Apply: Apply a continuous, thin bead of WeldLock™ 347 around the full circumference of either the outer surface of the bushing or the internal bore of the gear housing.
- Ensure Coverage: Ensure the adhesive completely wets the entire mating surface as the components are inserted.
3. Assembly and Curing
- Assemble: Immediately slide or press the bushing into the housing bore. 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 before handling (typically 5 minutes). Allow a full 24 hours for the compound to reach maximum strength before introducing gear oil or subjecting the gearbox to operational loads.