Peripheral Design
Recommended machining accuracies for peripheral attachments (shafts, housings, etc.) are displayed below.
1. Recommended Machining Accuracies for Paired Components
| Standard dimensions d, D (mm) | Circularity/perpendicularity/ atness(μm) |
|
|---|---|---|
| Above | Or less | |
| 120 | 180 | 5 |
| 180 | 250 | 7 |
| 250 | 315 | 8 |
| 315 | 400 | 9 |
| 400 | 500 | 10 |
| 500 | 630 | 11 |
Use the table below as a guideline for shaft and housing depths.
2. Shafts and Housing Depths
| Application | Fit depth: H |
|---|---|
| When positioning accuracy is needed | 0.15 to 0.25×B |
| When loads are large | 0.50 to 0.75×B |
| When high rigidity is needed | 0.75 to 1.00×B |
The values below are recommended for the bolt holes used to secure paired components.
3. Recommended Bolt Hole Dimensions for Paired Components
Unit: mm
| Model No. | Bolt size | Recommended bolt hole dimensions | ||
|---|---|---|---|---|
| d1 | d2 | h | ||
| RW228 | M6 | 7 | 11 | 6.5 |
| RW297 | M8 | 9.3 | 14.5 | 8.6 |
| RW445 | M8 | 9.3 | 14.5 | 8.6 |
