一般公差/未注公差
一般公差的公差等级和极限偏差数值
一般公差的标注
线性尺寸的极限偏差数值
| 公差等级 | 线性尺寸的极限偏差 | |||||||
|---|---|---|---|---|---|---|---|---|
| 尺 寸 分 段 , mm | ||||||||
| 0.5～3 | >3～6 | >6～30 | >30～120 | >120～400 | >400～1000 | >1000～2000 | >2000～4000 | |
| 精密 f | ±0.05 | ±0.05 | ±0.1 | ±0.15 | ±0.2 | ±0.3 | ±0.5 | － |
| 中等 m | ±0.1 | ±0.1 | ±0.2 | ±0.3 | ±0.5 | ±0.8 | ±1.2 | ±2 |
| 粗糙 c | ±0.2 | ±0.3 | ±0.5 | ±0.8 | ±1.2 | ±2 | ±3 | ±4 |
| 最粗 v | － | ±0.5 | ±1 | ±1.5 | ±2.5 | ±4 | ±6 | ±8 |
线性尺寸的极限偏差数值
| 公差等级 | 倒圆半径与倒角高度尺寸的极限偏差数值 | |||
|---|---|---|---|---|
| 尺 寸 分 段 , mm | ||||
| 0.5～3 | >3～6 | >6～30 | >30 | |
| 精密 f | ±0.2 | ±0.5 | ±1 | ±2 |
| 中等 m | ±0.2 | ±0.5 | ±1 | ±2 |
| 粗糙 c | ±0.4 | ±1 | ±2 | ±4 |
| 最粗 v | ±0.4 | ±1 | ±2 | ±4 |
角度尺寸的极限偏差数值
| 公差等级 | 角度尺寸的极限偏差数值 | ||||
|---|---|---|---|---|---|
| 长度分段 , mm | |||||
| 〜10 | >10〜50 | >50〜120 | >120〜400 | >400 | |
| 精密 f | ±1° | ±30' | ±20' | ±10' | ±5' |
| 中等 m | ±1° | ±30' | ±20' | ±10' | ±5' |
| 粗糙 c | ±1°30' | ±1° | ±30' | ±15' | ±10' |
| 最粗 v | ±3° | ±2° | ±1° | ±30' | ±20' |
