Bushings in jackhammers (or demolition hammers) are subjected to the most violent mechanical environment: continuous, heavy, high-frequency impact shock, intense vibration, and high operational heat. The bushing must be permanently and rigidly secured to maintain alignment and absorb the impact load. Any loosening is an immediate failure. This is a non-negotiable High Strength, Permanent application.
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 percussive tools.
| Key Feature | Performance for Jackhammer Bushings |
| High Strength, Fast Curing | Creates a monolithic bond that resists maximum impact shock and cyclical stress, permanently locking the bushing against spin-out or walking out. |
| Temperature Resistance (175∘C) | Maintains full structural integrity under the sustained high operational heat generated by the percussive action and motor. |
| Ideal Gap Fill (Up to 0.15mm) | Perfectly secures standard press-fit bushings, eliminating the microscopic clearances that cause fretting and joint failure under high impact. |
| Core Application | Suited for securing high-load rotating and static elements, matching the severe demands of heavy-duty power tools. |
Application Steps: Installing Jackhammer Bushings
For maximum structural integrity and reliable, permanent retention of the bushings, follow these steps:
1. Surface Preparation (The Foundation)
- Clean: Thoroughly clean the housing bore and the bushing’s outer surface. Surfaces must be absolutely free of all grease, 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 bead of WeldLock™ 347 around the full circumference of either the outer surface of the bushing or the internal bore of the 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 component is fully seated and 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 structural strength before placing the jackhammer back into service.