Propeller shafts to bushings in marine or heavy-duty industrial applications are exposed to sever torsional loads, continuous cyclical stress, and high potential for corrosion from water, chemicals, or moisture. The permanent, rigid retention of this joint is essential to prevent slip, wear, and system failure. This demands a non-negotiable High Strength, Permanent structural lock with excellent environmental resistance.
INCURE WeldLock™ 347 Retaining Compound (Green)
The INCURE WeldLock™ 347 Retaining Compound is the definitive choice. It provides a permanent, high-shear structural bond designed to withstand the extreme dynamic loads and thermal stability required for drive shafts, offering superior resistance to water and corrosive environments.
| Key Feature | Performance for Propeller Shaft Bushings |
| High Strength, Fast Curing | Creates a monolithic bond that resists maximum torsional load and shear stress, permanently locking the bushing to the shaft. |
| Temperature Resistance (175∘C) | Maintains full structural integrity under sustained operational heat and environmental temperature extremes. |
| Ideal Gap Fill (Up to 0.15mm) | Perfectly secures standard press-fit assemblies, eliminating the microscopic clearances that cause fretting and ingress of water/corrosive media. |
| Core Application | Suited for securing high-load rotating elements in mechanical drives, matching the severe demands of propeller and drive systems. |
Application Steps: Installing Propeller Shaft Bushings
For maximum structural integrity and reliable, permanent retention of the bushing, follow these steps:
1. Surface Preparation (The Foundation)
- Clean: Thoroughly clean both the shaft surface and the bushing bore. Surfaces must be absolutely free of all water,oil, and contaminants. Use an industrial cleaner (e.g., acetone) and wipe dry.
- Activate (If Needed): For maximum cure speed, apply a chemical activator to the bond surfaces and allow it to flash off completely.
2. Product Application
- Apply: Apply a continuous, thin coating of WeldLock™ 347 around the full circumference of the shaft where the bushing will seat.
- Ensure Coverage: Ensure the adhesive completely wets the entire mating surface as the components are assembled.
3. Assembly and Curing
- Assemble: Immediately slide or press the bushing onto the shaft until it is fully seated and aligned.
- 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 structural strength before introducing the assembly to water or operational loads.