Powdered Metal Spur Gears
Powder metal spur gears are spur gears manufactured using powder metallurgy technology, which combines the forming advantages of powder metallurgy with the transmission characteristics of spur gears • Essentially, it is a cylindrical gear with parallel tooth lines and axes, belonging to one of the most widely used types of gears. • Different from traditional cutting gears, it is manufactured through metal powder pressing and sintering solidification.
- Product Introduction
product Details
|
Commodity |
Factory customized high precision strong wear resistance powder metallurgy spur gear |
| Modular range | 0.1-2.0mm |
| Number of teeth range | 10-100 teeth |
| Outer diameter tolerance | ±0.01mm - ±0.03mm |
| Tooth surface roughness | Ra0.8-Ra3.2μm |
| Density | 6.0-7.2g/cm³ ( iron based ) |
| Tensile strength | 300-800MPa |
Basic characteristics of powder metallurgy spur gears
• Manufacturing principle: Made from metal powder as raw material, through processes such as powder mixing, compression molding, sintering, and subsequent processing, without the need for traditional cutting, it can accurately replicate the gear tooth profile.
• Core advantages:
1. Cost controllable: Material utilization rate can reach over 95%, significantly reducing raw material waste.
2. Stable accuracy: The tooth profile accuracy can reach up to level 6 of GB/T 10095.1, meeting the needs of most industrial scenarios.
3. Strong adaptability: It can be integrated into complex structures with wheels and steps, without the need for secondary assembly.
• Common materials: iron-based (Fe-C, Fe-Cu-C), copper based (Cu Zn, Cu Sn), with iron-based accounting for over 80% of the market usage.
Typical application scenarios
• Automotive industry: engine valve drive gears, oil pump gears, gearbox synchronizer rings, with an annual usage of over 1 billion pieces.
• In the field of household appliances: washing machine clutch gears, air conditioning compressor gears, with better noise reduction effect than cutting gears.
• Electric tools: transmission gears for hand drills and angle grinders, capable of withstanding high-frequency impact loads.
• Office equipment: paper feeding mechanism gears for printers and copiers, ensuring precise transmission ratios.
Performance comparison and selection reference
| Performance dimension | Powder metallurgy spur gear | Cutting and machining of spur gears | Injection molded nylon gear |
| Manufacturing cost | Low (-30%) | High | Lower |
| Transmission torque capability | Medium high | High | Low |
| Wear resistance | Excellent (immersion oil) | Good | Average |
| Weight | Slightly heavy | Heavy | Light |
| Mass production efficiency | Extremely high | Medium | High |
Selection principle:
1.When the torque requirement is ≥ 500N · m, priority should be given to cutting gears.
2.For scenarios with high requirements for lightweight and noise reduction, nylon gears can be considered.
3. For general transmission scenarios with a batch size of ≥ 10000 pieces, powder metal gears offer the best cost-effectiveness.
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