Retaining shafts in small fans (e.g., computer cooling fans, personal desk fans) requires a bond strong enough to resist high-speed rotation and vibration, but the assembly must be easily disassembled for cleaning, motor repair, or component replacement. This demands a retaining compound with the absolute lowest required strength to ensure easy, non-destructive disassembly.
This is a Functional Low Strength, Easily Serviceable application.
INCURE WeldLock™ 338 Retaining Compound (Yellow)
The INCURE WeldLock™ 338 Retaining Compound is the functional low-to-medium strength solution. Although categorized for medium strength, it is specifically designed for applications where future disassembly is required(serviceable). This makes it the most serviceable and lowest-strength option available that still provides the necessary anti-vibration qualities.
| Key Feature | Performance for Small Fan Shafts |
| Serviceable Bond (Yellow) | Designed for assemblies requiring easy removal or repositioning. Locks the shaft securely but allows for simple, non-destructive separation for maintenance. |
| Excellent Vibration Resistance | Provides reliable holding power against continuous high-speed rotation and vibration, preventing the shaft from shifting or spinning. |
| Gap Fill (Up to 0.25mm) | Effectively fills the small clearances, ensuring a solid, unified interface between the shaft and the rotor/motor housing. |
| Core Application | Suited for secure yet serviceable joints in light-duty machinery. |
Application Steps: Installing Small Fan Shafts
For optimal concentricity and reliable, yet removable, installation of the shafts, follow these steps:
1. Surface Preparation
- Clean: Thoroughly clean both the shaft surface and the mating component bore. Surfaces must be absolutely free of all grease, oil, and contaminants. Use a cleaner (e.g., isopropyl alcohol or acetone) and wipe dry.
- Activate (If Needed): Applying a chemical activator can ensure faster, more consistent curing, which is often beneficial for small components.
2. Product Application
- Apply: Apply a minimal, continuous, thin bead of WeldLock™ 338 around the full circumference of either the shaft or the internal bore of the mating component (e.g., the rotor hub).
- Ensure Coverage: Ensure the adhesive completely wets the entire mating surface as the components slide together.
3. Assembly and Curing
- Assemble: Immediately slide or press the shaft into the component bore. Ensure the components are aligned correctly.
- Wipe Excess: Remove any excess adhesive visible outside the joint immediately after assembly.
- Cure: Allow the assembly to fixture before handling (typically 10-30 minutes). Allow a full 24 hours for the compound to reach maximum strength before placing the fan back into service.