Electric fan blade shafts require a secure fit to the motor to resist rotational forces, but the assembly must be removable for cleaning, motor repair, or blade replacement. This demands a retaining compound that offers secure anti-vibration strength while allowing for future, non-destructive disassembly.
This is a Medium Strength, Serviceable application.
INCURE WeldLock™ 338 Retaining Compound (Yellow)
The INCURE WeldLock™ 338 Retaining Compound is the ideal functional “Medium Strength” solution. It is designed for assemblies where future disassembly is required, providing enough holding power to resist rotational slip and vibration without making shaft removal a destructive process.
| Key Feature | Performance for Fan Blade Shafts |
| Serviceable Bond (Yellow) | Designed for assemblies requiring removal or repositioning. Locks the shaft securely but allows for easier, non-destructive separation for maintenance. |
| Excellent Vibration Resistance | Provides reliable holding power against continuous rotational forces and imbalance vibration, preventing the shaft from shifting or loosening. |
| Gap Fill (Up to 0.25mm) | Effectively fills the annular space, ensuring a solid, unified interface between the shaft and the motor component. |
| Temperature Resistance (150∘C) | Maintains integrity under standard operational temperatures. |
Application Steps: Installing Electric Fan Blade Shafts
For optimal retention and reliable, yet removable, installation of the fan blade shaft, follow these steps:
1. Surface Preparation (The Foundation)
- 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., acetone) and wipe dry.
- Activate (If Needed): If the ambient temperature is low, applying a chemical activator can ensure faster, more consistent curing.
2. Product Application
- Apply: Apply a 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 or housing).
- 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 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 10-30 minutes). Allow a full 24 hours for the compound to reach maximum strength before placing the fan back into service.