Printer roller bushings require a precise fit to ensure smooth paper handling and accurate alignment. They must be secured against vibration and rotation but need to be easily removable because rollers and bushings are high-wear components that require frequent maintenance and replacement. This demands a retaining compound with the absolute lowest strength to ensure easy, non-destructive disassembly.
This is a Functional Low Strength, Easily Serviceable application.
INCURE WeldLock™ 338 Retaining Compound (Yellow)
The INCURE WeldLock™ 338 Retaining Compound is the functional low-to-medium strength solution. Although it provides good holding power, it is specifically designed for applications where future disassembly is required. This makes it the most serviceable and lowest-strength option available that still provides the necessary anti-vibration qualities.
| Key Feature | Performance for Printer Roller Bushings |
| Serviceable Bond (Yellow) | Designed for assemblies requiring easy removal or repositioning. Locks the bushing securely but allows for simple, non-destructive separation for routine roller replacement. |
| Excellent Vibration Resistance | Provides reliable holding power against motor vibration and rotational forces, preventing play that causes misalignment and jamming. |
| Gap Fill (Up to 0.25mm) | Effectively fills the small clearances, ensuring a solid, unified interface for precise roller positioning. |
| Core Application | Suited for secure yet serviceable joints in precision light-duty machinery. |
Application Steps: Installing Printer Roller Bushings
For optimal concentricity and reliable, yet removable, installation of the bushings, follow these steps:
1. Surface Preparation
- Clean: Thoroughly clean the housing bore and the bushing’s outer surface. Surfaces must be absolutely free of toner, paper dust, grease, and oil. Use a cleaner (e.g., isopropyl alcohol or acetone) and wipe dry.
- Activate (If Needed): Due to the small size and the need for quick cure times in assembly, applying a chemical activator can ensure faster, more consistent curing.
2. Product Application
- Apply: Apply a minimal, continuous, thin bead of WeldLock™ 338 around the full circumference of either the outer surface of the bushing or the internal bore of the 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 bushing into the housing bore. Ensure the components are aligned correctly.
- 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 printer back into service.