Sintered Iron Pinion Insert-Molded Plastic Gear

Manufacturing Processes & Capabilities

• Precision In-Mold Positioning of Sintered Iron Pinion: Dedicated tooling fixtures locate and lock the sintered iron pinion via its reference bore and tooth profiles, ensuring tight concentricity and precise tooth-phase alignment relative to the outer plastic gear.
• Insert Injection Molding of Plastic Gear: Leveraging mold flow optimization and controlled packing profiles tailored to the sintered metal base and knurled retention features, the engineering plastic gear is integrally molded to eliminate interface voids and shrinkage-induced tooth distortion.

Features & Advantages

• High Strength & Wear Resistance of Sintered Pinion: The primary sintered iron pinion delivers superior hardness and contact fatigue resistance, capable of handling high-speed inputs and peak torque directly from the motor shaft.
• Low-Noise Operation & Superior Bonding of Molded Gear: The secondary insert-molded plastic gear offers vibration absorption and self-lubrication to minimize gear meshing noise, while the deep mechanical interlock delivers high torsional shear resistance for smooth, reliable multi-stage speed reduction.