CNC Machined Metal-Cored Plastic Compound Spur Gear with Integrated Bearing for Precision Transmission
Description
Our Metal-Plastic Composite Dual Spur Gear with Bearing Bushing is a precision-engineered component designed for reliable, low-noise power transmission in compact spaces. Combining a high-strength metal inner core (powder metallurgy/zinc alloy/steel) with a self-lubricating plastic outer gear ring (POM/PA66/Nylon), this dual spur gear delivers exceptional durability and quiet operation—ideal for office automation equipment (printers, copiers), precision instruments, and small consumer electronics.
Manufactured via CNC machining (for metal cores) and insert injection molding (for plastic gear rings), our gears meet ISO 6–8 accuracy standards, with customizable module (0.5–1.5 mm), tooth count, and bore diameter to match your exact design requirements. The integrated stainless steel bearing bushing ensures smooth rotation and precise shaft fit, reducing friction and extending service life.
Backed by ISO 9001 quality management, we offer full OEM/ODM services, accepting 2D/3D drawings (STEP/IGES/DXF) to deliver tailored solutions that balance performance, cost, and longevity for your precision transmission needs.
| Parameter | Details |
|---|---|
| Product Name | Metal-Plastic Composite Dual Spur Gear with Bearing Bushing |
| Material | – Inner Core: Powder metallurgy / Zinc alloy / Carbon steel (S45C)
– Outer Gear Ring: POM / PA66 / Nylon (self-lubricating, noise-damping) – Bearing Bushing: Stainless steel sleeve |
| Gear Type | Dual spur gear (compound spur gear), parallel shaft transmission |
| Module (m) | Customizable, standard range: 0.5 – 1.5 mm (small precision module) |
| Number of Teeth (Z) | – Inner metal gear: Z₁ = 10 – 20 teeth
– Outer plastic gear: Z₂ = 20 – 40 teeth (custom ratio available) |
| Pressure Angle (α) | Standard: 20° (customizable to 14.5° / 25°) |
| Pitch Diameter (d) | Calculated as: (custom per design) |
| Face Width (b) | Metal core: 3 – 8 mm; Plastic ring: 3 – 8 mm (integrated structure) |
| Bore Diameter (dₖ) | Customizable, typical range: 3 – 8 mm (with bearing bushing for precision fit) |
| Outer Diameter (Dₒ) | Determined by outer gear: |
| Tolerance Grade | ISO 9001 certified, gear accuracy: ISO Grade 6 – 8 (higher precision available upon request) |
| Surface Finish | – Metal core: Ra 1.6 – 3.2 μm (CNC machined / powder metallurgy)
– Plastic ring: Ra 0.8 – 1.6 μm (injection molded) |
| Heat Treatment (Metal Core) | Optional: Carburizing & quenching / Tempering (to enhance wear resistance) |
| Typical Applications | Office automation (printers, copiers), precision instruments, small power tools, consumer electronics |
| Processing Technology | – Metal core: CNC turning / milling / powder metallurgy
– Plastic ring: Injection molding (insert molding for integration) – Assembly: Press-fit bearing bushing |
| Customization Service | Accept custom 2D/3D drawings (STEP, IGES, DXF), full OEM/ODM solutions |
Additional information
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