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可靠度系数 规格表
Reliability Factor KS Specifications — 10个尺寸
ISO 281
ISOReliability Factor
10 sizes| Reliability | Life Name | a₁ Factor | Application | Standard | - |
|---|---|---|---|---|---|
| 90% | L₁₀ () | 1.00 | ISO 281 | ISO 281 | - |
| 95% | L₅ | 0.64 | 机械· | ISO 281 | - |
| 96% | L₄ | 0.55 | 航空· | ISO 281 | - |
| 97% | L₃ | 0.47 | 轴 | ISO 281 | - |
| 98% | L₂ | 0.37 | 医疗器械· | ISO 281 | - |
| 99% | L₁ | 0.25 | · | ISO 281 | - |
| 99.2% | L₀.₈ | 0.22 | · | ISO 281 | - |
| 99.5% | L₀.₅ | 0.19 | · | ISO 281 | - |
| 99.9% | L₀.₁ | 0.093 | · | ISO 281 | - |
| 99.95% | L₀.₀₅ | 0.077 | · | ISO 281 | - |
This specification follows ISO (International Organization for Standardization) standards. ISO ensures cross-border compatibility, making it ideal for multinational projects, export equipment design, and global parts procurement.
ISO 281规定的不同可靠度寿命换算系数a₁表。标准L₁₀对应90%可靠度(10%失效), 95%可靠度(L₅)为0.64, 99%可靠度(L₁)为0.25。即可靠度越高, 只保证公称寿命的25%。一般机械用L₁₀, 汽车精密机械用L₅, 医疗航空航天部件用L₁~L₀.₁等级, 设计寿命按a₁·L₁₀计算。