Complaint
The advantages of a leadscrew are:
| Nominal diameter D (mm) | Pitch P (mm) | Nominal diameter D (mm) | Pitch P (mm) | ||||
|---|---|---|---|---|---|---|---|
| 1st choice | 2nd choice | Coarse | Fine | 1st choice | 2nd choice | Coarse | Fine |
| 1 | 0.25 | 0.2 | 16 | 2 | 1.5 | ||
| 1.2 | 0.25 | 0.2 | 18 | 2.5 | 2 or 1.5 | ||
| 1.4 | 0.3 | 0.2 | 20 | 2.5 | 2 or 1.5 | ||
| 1.6 | 0.35 | 0.2 | 22 | 2.5 | 2 or 1.5 | ||
| 1.8 | 0.35 | 0.2 | 24 | 3 | 2 | ||
| 2 | 0.4 | 0.25 | 27 | 3 | 2 | ||
| 2.5 | 0.45 | 0.35 | 30 | 3.5 | 2 | ||
| 3 | 0.5 | 0.35 | 33 | 3.5 | 2 | ||
| 3.5 | 0.6 | 0.35 | 36 | 4 | 3 | ||
| 4 | 0.7 | 0.5 | 39 | 4 | 3 | ||
| 5 | 0.8 | 0.5 | 42 | 4.5 | 3 | ||
| 6 | 1 | 0.75 | 45 | 4.5 | 3 | ||
| 7 | 1 | 0.75 | 48 | 5 | 3 | ||
| 8 | 1.25 | 1 or 0.75 | 52 | 5 | 4 | ||
| 10 | 1.5 | 1.25 or 1 | 56 | 5.5 | 4 | ||
| 12 | 1.75 | 1.5 or 1.25 | 60 | 5.5 | 4 | ||
| 14 | 2 | 1.5 | 64 | 6 | 4 |
| Nominal diameter D (mm) | Pitch P (mm) | Nominal diameter D (mm) | Pitch P (mm) | ||||
|---|---|---|---|---|---|---|---|
| 1st choice | 2nd choice | Coarse | Fine | 1st choice | 2nd choice | Coarse | Fine |
| 1 | 0.25 | 0.2 | 16 | 2 | 1.5 | ||
| 1.2 | 0.25 | 0.2 | 18 | 2.5 | 2 or 1.5 | ||
| 1.4 | 0.3 | 0.2 | 20 | 2.5 | 2 or 1.5 | ||
| 1.6 | 0.35 | 0.2 | 22 | 2.5 | 2 or 1.5 | ||
| 1.8 | 0.35 | 0.2 | 24 | 3 | 2 | ||
| 2 | 0.4 | 0.25 | 27 | 3 | 2 | ||
| 2.5 | 0.45 | 0.35 | 30 | 3.5 | 2 | ||
| 3 | 0.5 | 0.35 | 33 | 3.5 | 2 | ||
| 3.5 | 0.6 | 0.35 | 36 | 4 | 3 | ||
| 4 | 0.7 | 0.5 | 39 | 4 | 3 | ||
| 5 | 0.8 | 0.5 | 42 | 4.5 | 3 | ||
| 6 | 1 | 0.75 | 45 | 4.5 | 3 | ||
| 7 | 1 | 0.75 | 48 | 5 | 3 | ||
| 8 | 1.25 | 1 or 0.75 | 52 | 5 | 4 | ||
| 10 | 1.5 | 1.25 or 1 | 56 | 5.5 | 4 | ||
| 12 | 1.75 | 1.5 or 1.25 | 60 | 5.5 | 4 | ||
| 14 | 2 | 1.5 | 64 | 6 | 4 |
| Material combination | Starting {\displaystyle \mu _{c}} | Running {\displaystyle \mu _{c}} |
|---|---|---|
| Soft steel / cast iron | 0.17 | 0.12 |
| Hardened steel / cast iron | 0.15 | 0.09 |
| Soft steel / bronze | 0.10 | 0.08 |
| Hardened steel / bronze | 0.08 | 0.06 |
