Mounting bearings into motor housings is a fundamental, High Strength application in industrial machinery. These bearings are subjected to high rotational speeds, intense vibration and dynamic load from the motor and its output, and sustained operational heat. The integrity of this bond is non-negotiable; bearing spin-out is catastrophic, leading to immediate motor failure and costly downtime.
The optimal solution is a high-strength retaining compound engineered for maximum structural rigidity under continuous dynamic and thermal stress.
INCURE WeldLock™ 347 Retaining Compound (Green)
The INCURE WeldLock™ 347 Retaining Compound is the definitive choice for securing bearings in electric or combustion motor housings. It is a high-strength solution specifically designed for dynamic cylindrical assemblies and superior thermal stability.
| Key Feature | Performance for Motor Housing Bearings |
| High Strength, Fast Curing | Creates a monolithic bond that resists the immense vibration, shock, and side-load forces, ensuring the bearing remains precisely seated and true. |
| Temperature Resistance (175∘C) | Maintains full structural integrity under the sustained, elevated temperatures of an operating motor, crucial for continuous industrial duty. |
| Ideal Gap Fill (Up to 0.15mm) | Perfectly secures standard press-fit bearings, eliminating the micromovement (fretting) that destroys the bearing-to-housing interface and causes premature bearing failure. |
| Core Application | Specifically suited for securing rotors, gears, and shafts in motors and mechanical drives, matching the exact demands of industrial machinery. |
Application Steps: Installing Motor Housing Bearings
For optimal performance and reliable retention of the motor bearing, follow these steps:
1. Surface Preparation (The Foundation)
- Clean: Thoroughly clean the motor housing bore and the bearing’s outer race. Surfaces must be absolutely free of all grease, oil, and contaminants. Use an industrial cleaner or solvent (e.g., acetone) and wipe dry.
- Activate (If Needed): If using passive metals (like stainless steel or plated parts) or if the ambient temperature is below 15∘C (59∘F), 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 race of the bearing or the internal bore of the motor 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 bearing into the housing 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 5 minutes). Allow a full 24 hours for the compound to reach maximum strength before starting the motor or subjecting the assembly to operational loads.