Proofreading column
Proofreading column is the reference of outer diameter dimension transmission in mechanical manufacturing industry, and can be used as the reference piece of pneumatic outer diameter measuring head and mechanical gauge.
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Proofreading column
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F4-F120mm
Proofreading column is the reference of outer diameter dimension transmission in mechanical manufacturing industry, and can be used as the reference piece of pneumatic outer diameter measuring head and mechanical gauge.
Main technical indicators: Unit: μm
| Nominal diameter (mm) | Manufacturing deviation | Roundness | parallelism of line |
| >4~6 | ±1.0 | 0.5 | 1.0 |
| >6~10 | ±1.0 | 0.5 | 1.0 |
| >10~18 | ±2.0 | 0.5 | 1.0 |
| >18~30 | ±2.0 | 0.5 | 1.0 |
| >30~50 | ±2.0 | 0.5 | 1.0 |
| >50~80 | ±2.5 | 0.5 | 1.0 |
| >80~120 | ±2.5 | 0.8 | 1.5 |
Size table:: Unit: mm
| D | L2 | L3 | L4 |
| > F12 ~ F30 | 70 | 35 | 20 |
| > F30 ~ F45 | 70 | 35 | 20 |
| > F45 ~ F60 | 80 | 40 | 20 |
| > F60 ~ F80 | 90 | 45 | 25 |
| > F80 ~ F100 | 90 | 45 | 25 |
| > F100 ~ F120 | 100 | 50 | 30 |
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