Retaining bushings within landing gear components is an extremely critical application, demanding maximum structural integrity. Landing gear is subjected to immense impact shock, continuous high cyclical stress (takeoff and landing), and extreme vibration. The permanent retention of these bushings is essential for steering precision and load distribution. Failure is catastrophic. This is a non-negotiable High Strength, Permanent application.
The optimal solution is a high-strength retaining compound engineered for maximum structural rigidity and superior shock resistance.
INCURE WeldLock™ 347 Retaining Compound (Green)
The INCURE WeldLock™ 347 Retaining Compound is the definitive choice for securing bushings in landing gear and other highly stressed structural components. It provides a superior, permanent bond designed to withstand extreme dynamic forces and temperature variations.
| Key Feature | Performance for Landing Gear Bushings |
| High Strength, Fast Curing | Creates a monolithic bond that resists immense shock loads and cyclical fatigue, permanently locking the bushing against spin-out or walking out. |
| Temperature Resistance (175∘C) | Maintains full structural integrity across the wide temperature range encountered during ground operations and flight. |
| Ideal Gap Fill (Up to 0.15mm) | Perfectly secures standard press-fit bushings, eliminating the microscopic play that causes fretting and eventual structural failure in critical load-bearing joints. |
| Core Application | Specifically suited for securing high-load rotating and static elements in motors and mechanical drives, matching the severe demands of aerospace landing gear. |
Application Steps: Installing Landing Gear 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 hydraulic fluid, grease, and contaminants. Use an industrial cleaner or solvent (e.g., acetone) and wipe dry.
- Activate (If Needed): Due to the critical nature and potential for passive metals, the use of a chemical activator is often recommended to ensure maximum cure speed and strength. Apply to one surface 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 components are 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 landing gear component into service or subjecting it to load.