Gear wheels on shafts are a primary point of power transmission, enduring extreme torsional stress, massive shear loads, and constant shock/vibration from engagement cycles. Any slippage or relative movement between the gear and the shaft is an immediate mechanical failure, leading to stripped teeth, gear misalignment, and catastrophic system damage. This is a non-negotiable High Strength, Permanent application.
The optimal solution is a high-strength retaining compound engineered for maximum torque transfer and structural rigidity in drivetrain components.
INCURE WeldLock™ 347 Retaining Compound (Green)
The INCURE WeldLock™ 347 Retaining Compound is the definitive choice for securing gear wheels to shafts. It is a high-strength solution specifically designed to withstand the dynamic and torsional loads in heavily stressed gear assemblies.
| Key Feature | Performance for Gear Wheels on Shafts |
| High Strength, Fast Curing | Creates a monolithic, keyless connection that resists the extreme torsional forces and shear stress, permanently locking the gear to the shaft and eliminating backlash. |
| Temperature Resistance (175∘C) | Maintains full structural integrity under the sustained operational heat generated by friction and power transmission, ensuring long-term reliability. |
| Ideal Gap Fill (Up to 0.15mm) | Perfectly secures press-fit gear wheels, eliminating the minute play that causes fretting, wear, and eventual failure under cyclical loading. |
| Core Application | Specifically suited for securing gears, rotors, and shafts in motors and mechanical drives, matching the high-demand environment of power transmission systems. |
Application Steps: Installing Gear Wheels on Shafts
For optimal torque transfer and reliable retention of the gear wheel, follow these steps:
1. Surface Preparation (The Foundation)
- Clean: Thoroughly clean the shaft surface and the gear wheel bore. 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 shaft or the internal bore of the gear wheel.
- Ensure Coverage: Ensure the adhesive completely wets the entire mating surface as the components slide together to fill all microscopic gaps.
3. Assembly and Curing
- Assemble: Immediately slide or press the gear wheel onto the shaft. 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 subjecting the assembly to operational loads.