Low-Noise Damping Gears

Specifications

• Product Category: Precision Transmission Components
• Module Range: M0.2 to M1.5 (Micro to standard module tooling)
• Tooth Profiles: Spur / Helical / Compound Gear Configurations
• Recommended Materials:
  Engineering Plastics: PA66, PA12 (High impact strength, low moisture absorption)
  Elastomers: TPU (Thermoplastic Polyurethane), TPE/TPR, or custom elastomer blends
• Structural Types: Single-elastomer molded gears, 2K/two-shot overmolding (rigid hub + elastomeric tooth ring), insert-molded damping structures
• Primary Purpose: Absorbs meshing impact, dampens resonance, and eliminates high-frequency gear whine and mechanical vibration
• Applications: Medical & Laboratory Equipment, Office Automation (Printers/Scanners), Smart Home & Personal Care (Electric Toothbrushes/Shavers), Automotive Cabin Actuators, Precision Servo Drives

Manufacturing Processes & Capabilities

• Multi-Material & 2K Overmolding Tooling: Accommodates M0.2 to M1.5 modules utilizing PA66, PA12, and TPU resins; features dual-shot injection capabilities to fuse rigid inner hubs with high-damping elastomeric gear rims for permanent bonding.
• Tooth Profile Modification & Shrinkage Control: Tailored mold flow parameters compensate for elastomer elasticity and shrinkage variations, maintaining micro-precision tooth profiles, smooth root fillets, and uniform pitch-circle runout.

Features & Advantages

• Acoustic Noise Reduction & Resonance Damping: Viscoelastic elastomeric materials absorb kinetic impact during tooth meshing, preventing acoustic vibration propagation to significantly lower decibel (dB) levels and eliminate high-pitched gear whine.
• Impact Absorption & Compliant Flank Engagement: Flexible tooth surfaces adapt slightly under dynamic loads to distribute contact stress evenly, accommodating minor shaft misalignments while resisting sudden shock loads.
• Wear Resistance, Low-Temp Toughness & Self-Lubrication: PA12 and TPU formulations provide high wear resistance, fatigue strength, and low-temperature flexibility, delivering durable, maintenance-free quiet operation in unlubricated environments.