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| General | |
|---|---|
| Brand | "Lingyue" | 
| Modulus | 0.5 | 
| Number of teeth | 40 | 
| Tooth width | 5.5 | 
| Material | iron | 
| Specification and model | Gear of the 25-cylinder air pump | 
| accuracy level | 8 | 
| Type | Gear | 
| Surface treatment | Machining | 
| Heat treatment | Carburizing and quenching | 














