Securing Servo Motor Gear Assemblies for Precision

  • Post last modified:October 10, 2025

Securing the components of a servo motor gear assembly (such as planet gears onto carriers, sun gears onto shafts, or output flanges) is a critical task for maintaining the precision and rigidity required in robotic and CNC applications. This joint is subjected to high torsional load, rapid shock reversal (from indexing and quick stops), and the absolute demand for zero backlash. Any micro-movement compromises the gear mesh, leads to accelerated wear, and destroys the system’s positional accuracy.

INCURE WeldLock™ 365 Retaining Compound

For securing high-stress servo gear components—where maximum shear strengthrigidity, and resistance to shock loading are paramount—the WeldLock™ 365 provides the highest structural integrity. Its superior strength ensures the gear components are held immovably, preserving the precise gear mesh and minimizing backlash.

Feature & BenefitTechnical Insight for Servo Gear AssembliesConversion Value
Highest Strength (365)Cures to an extremely high-shear strength, rigid plastic, providing maximum resistance to torsional shock and cyclical reversal loads.Zero Backlash Creep: Eliminates all micro-movement, preserving gear mesh and preventing premature wear.
High Temperature ResistanceWithstands continuous operational temperatures up to 200∘C (392∘F), essential for gearboxes generating friction heat under heavy indexing duty.End the Heat Threat: Guarantees the joint won’t fail or soften under maximum thermal load.
Fills Close Clearance GapsIdeal for components with an interference or true close-tolerance slip fit (less than 0.05 mm diametral clearance) typical of precision gearing.Maximizes Rigidity: Converts the press fit into a monolithic, integrated component, optimizing load distribution.
Lubricant ImmunityInert to common servo gear lubricants and grease, ensuring the integrity of the joint is protected.Reliability Assured: The bond remains permanently intact despite fluid saturation.

Application Steps: Locking Servo Gears for Maximum Positional Accuracy

Preparation (Critical): Thoroughly clean both mating surfaces (e.g., the gear bore and the shaft surface). Remove all oil, grease, and residue. Use a powerful degreasing solvent (like acetone or industrial cleaner) and wipe until both metal surfaces are perfectly dry.

Application: Apply a continuous, liberal bead of WeldLock™ 365 evenly around the shaft surface or the inside circumference of the gear bore. Ensure the compound completely covers the mating area.

Assembly: Press or slide the gear component into position using the manufacturer’s specified tools. Ensure the component is fully seated. Wipe away any excess compound immediately.

Curing Time (Mandatory): Allow a full 24 hours for the compound to reach full cure strength before refilling the gearbox with lubricant or operating the servo system under load.

Stop risking backlash and ensure your servo motor gear assemblies deliver absolute precision and longevity.