In precision engineering and high-tolerance assemblies—such as securing high-speed bearings or intricate bushings—the thickness of the cured adhesive layer and any accompanying squeeze-out can be catastrophic. If the retaining compound is applied too thickly, its presence can alter the critical radial or axial dimensions, leading to interference that prevents the parts from seating properly or even causes component binding.
The problem lies in choosing a compound that is too viscous or one that fills a gap larger than the actual clearance you are working with.
The Solution: Controlled Viscosity and Thin-Layer Adhesion
To ensure a perfect fit that respects precision tolerances, you need a retaining compound with a medium, controlled viscosity that flows easily into minimal gaps and is manageable to apply in a thin, even film without excessive buildup.
Incure WeldLock™ 365 Green Retaining Compound
For assemblies where dimensional accuracy and clean application are critical to maintaining factory-tight tolerances, we recommend the Incure WeldLock™ 365 Green Retaining Compound.
This compound delivers high performance with a viscosity that allows for precision application, minimizing the risk of dimensional interference.
| Key Feature | Benefit for Maintaining Critical Tolerances |
| Medium Viscosity (1250 MPa⋅s) | This controlled flow rate allows for application of a thin, even layer, minimizing the risk of bulk buildup that can alter dimensions. |
| Ideal for Slip-Fit/Press-Fit | Engineered for assemblies with minimal clearance, ensuring the compound cures only in the tiny annular space without causing outward pressure. |
| High Strength Bond | Provides the necessary retention without requiring excessive material, ensuring you achieve a strong lock with the thinnest possible layer. |
| Controllable Application | The manageable viscosity results in less drip and run-out, making it easier to wipe away any minimal squeeze-out before it cures and interferes with other parts. |
WeldLock™ 365 provides the structural bonding power you need while respecting the original design specifications of your precision components.
Techniques for Precision Application
Using WeldLock™ 365 with these methods will guarantee minimal dimensional interference:
- Use a Brush/Swab: Instead of a direct application from the nozzle, apply a small amount to a clean swab or brush and paint a thin, uniform film onto the leading edge of the male component (e.g., the bearing race). The goal is minimum volume for maximum coverage.
- Avoid Excess: The most common cause of interference is over-application. Remember, the compound’s strength comes from the molecular bond, not the volume of material. Apply just enough to cover the mating surface.
- Wipe Immediately: If any squeeze-out occurs on non-mating surfaces—such as the face of a bearing cup or the edge of a shaft shoulder—wipe it away immediately with a clean cloth before it begins to fixture (which occurs in 10 minutes).
- Check Seating: Ensure components are fully seated to their proper depth or shoulder before the compound cures. The fast fixture time of WeldLock™ 365 will quickly lock the precision fit in place.
Maintain Perfect Tolerances with Incure WeldLock™ 365 Green Retaining Compound