Technical Parameters
| Input power | 0.8kw~175kw |
| Output torque | 2.3N.m~900N.m |
| Transmission ratio | 2~280 |
| Price | 2500~150000 yuan |
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Common Problems with Reducer Gear Tooth Surfaces
1. Pitting
(Surface crack propagation, abrasive particles, spalling) During gear operation, at the meshing point of tooth surfaces, due to long-term effects of cyclic alternating stress, when the stress peak exceeds the contact fatigue limit of the material, after a certain number of stress cycles, tiny fatigue cracks first appear on the gear surface near the pitch line. As the cracks expand, they will cause small pieces of metal to break off, resulting in tooth surface pitting. Pitting is the phenomenon of metal spalling caused by the expansion of tiny fatigue cracks formed due to metal fatigue on the contact surface.
2. Scuffing
Scuffing: Local temperature rise + heavy load, insufficient lubrication, oil deterioration
3. Spalling
4. Indentation
Solutions to Gear Tooth Breakage Failure in Reducers
Gear tooth breakage is one of the most severe failure modes in mechanical engineering. It mainly includes overload fracture, fatigue fracture, and random fracture. Overload fracture refers to the breakage of a gear tooth when subjected to one or more severe overloads. In such cases, the fracture typically occurs at the gear root, and the fracture surface is generally flat and rough.
Fatigue fracture occurs when fatigue cracks develop at the tooth root after prolonged high-cycle operation, leading to fracture. The fracture surface can be divided into a fatigue fracture zone and a final fracture zone. No plastic deformation is visible in the fatigue fracture area. Fatigue fracture may occur at the end of the gear tooth. Random fracture generally also happens at the gear root, but under special circumstances, it may appear in other areas as well.
There are many measures to prevent gear tooth fracture. These include increasing the root fillet radius and eliminating machining marks in this area to reduce stress concentration at the tooth root. Additionally, increasing the stiffness of the shaft and supporting components can help reduce localized stress levels. Furthermore, cold working treatments such as shot peening and rolling can be applied to the gear teeth to enhance surface strength.
Technical Parameters
| Input power | 0.8kw~175kw |
| Output torque | 2.3N.m~900N.m |
| Transmission ratio | 2~280 |
| Price | 2500~150000 yuan |
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Common Problems with Reducer Gear Tooth Surfaces
1. Pitting
(Surface crack propagation, abrasive particles, spalling) During gear operation, at the meshing point of tooth surfaces, due to long-term effects of cyclic alternating stress, when the stress peak exceeds the contact fatigue limit of the material, after a certain number of stress cycles, tiny fatigue cracks first appear on the gear surface near the pitch line. As the cracks expand, they will cause small pieces of metal to break off, resulting in tooth surface pitting. Pitting is the phenomenon of metal spalling caused by the expansion of tiny fatigue cracks formed due to metal fatigue on the contact surface.
2. Scuffing
Scuffing: Local temperature rise + heavy load, insufficient lubrication, oil deterioration
3. Spalling
4. Indentation
Solutions to Gear Tooth Breakage Failure in Reducers
Gear tooth breakage is one of the most severe failure modes in mechanical engineering. It mainly includes overload fracture, fatigue fracture, and random fracture. Overload fracture refers to the breakage of a gear tooth when subjected to one or more severe overloads. In such cases, the fracture typically occurs at the gear root, and the fracture surface is generally flat and rough.
Fatigue fracture occurs when fatigue cracks develop at the tooth root after prolonged high-cycle operation, leading to fracture. The fracture surface can be divided into a fatigue fracture zone and a final fracture zone. No plastic deformation is visible in the fatigue fracture area. Fatigue fracture may occur at the end of the gear tooth. Random fracture generally also happens at the gear root, but under special circumstances, it may appear in other areas as well.
There are many measures to prevent gear tooth fracture. These include increasing the root fillet radius and eliminating machining marks in this area to reduce stress concentration at the tooth root. Additionally, increasing the stiffness of the shaft and supporting components can help reduce localized stress levels. Furthermore, cold working treatments such as shot peening and rolling can be applied to the gear teeth to enhance surface strength.
