Press-fit components in small motors (like those in toys, RC devices, or small appliances) require a secure bond to resist rotational torque and high-speed vibration. However, these motors are often disassembled for maintenance, repair, or component replacement. This demands a retaining compound that offers secure, anti-slip 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 specifically designed for assemblies where future disassembly is required, providing sufficient torque resistance without making component removal a destructive process.
| Key Feature | Performance for Small Motor Components |
| Serviceable Bond (Yellow) | Designed for assemblies requiring removal or repositioning. Locks the component securely but allows for easier, non-destructive separation for motor maintenance. |
| Excellent Vibration Resistance | Provides reliable holding power against continuous high-speed rotation and vibration, preventing the component from shifting or spinning. |
| Gap Fill (Up to 0.25mm) | Effectively fills the annular space, ensuring a solid, unified interface between the component and the shaft/housing. |
| Temperature Resistance (150∘C) | Maintains integrity under the sustained operational temperatures of small electric motors. |
Application Steps: Installing Small Motor Press-Fit Components
For optimal retention and reliable, yet removable, installation of press-fit components, follow these steps:
1. Surface Preparation
- Clean: Thoroughly clean both the shaft surface and the component bore. Surfaces must be absolutely free of all grease, oil, and contaminants. Use an industrial cleaner (e.g., acetone) and wipe dry.
- Activate (If Needed): If the components are passive metal (like plated parts) or 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 component (e.g., a gear, bearing, or housing insert).
- 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 component into place. 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 motor back into service.