SR-20R IV type A / B
The Advantages
The SR-20R IV CNC sliding head lathe is the latest development of the tried and tested "SR-20" series.
In addition to the innovative characteristics of the SR-20R III, the SR-20R IV has an extra B axis and Y axis on the rear side.
8 backworking tools allow more possibilities for overlapped machining.
- FANUC 31i-B5 control system
- C-axis control as standard on main and sub spindle
- completely independent backworking
- changeable from sliding head to fixed headstock lathe
- movable control panel
- 2 additional deep drilling stations
- B axis for front and rear side on the tool post
Kinematics & Tools
- 7 turning tools
- front and rear side each with 4 drilling tools
- 8 + α power-driven tools on the tool post
- 11 + α power-driven tools for backworking
- 2 deep hole drilling stations
- 8 axes type A / 9 axes type B
| specifications | ||
|---|---|---|
| Diameter |  |
20 mm / 23 mm (option) |
| Length |  |
205 mm / 50 mm (fixed headstock lathe) |
| Machining options |  |
|
| C axis |  |
Main spindle |
| C axis | |
Sub spindle |
Kinematics of the SR-20R IV
| Front Side | SR-20R IV type A |
SR-20R IV type B |
|---|---|---|
| Number of axes | 8 | 9 |
| Main spindle (headstock) | Z1 / C1 axis | Z1 / C1 axis |
| Tool post | X1 / Y1 axis | X1 / Y1 / B axis |
| Max. machining diameter | 20 mm / 23 mm (option) |
20 mm / 23 mm (option) |
| Max. headstock stroke (sliding head / fixed headstock lathe) |
205 mm / 50 mm | 205 mm / 50 mm |
| Max. drive power | 3.7 kW | 3.7 kW |
| Max. main spindle speed | 10,000 rpm | 10,000 rpm |
| Tools on the tool post | ||
| Turning tools | 7 tools (□ 12mm) |
7 tools (□ 12mm) |
| Drilling tools (4-spindle sleeve holder) |
4 tools (ER16) | 4 tools (ER16) |
| Cross driven tools | 5 tools (ER16) | 5 tools (ER16) |
| B axis (e.g. for skewed hole machining) | 3 tools (ER16) main spindle |
3 tools (ER16) main spindle |
| 3 tools (ER16) rear side |
3 tools (ER16) rear side |
|
| Max. speed | 8,000 rpm | 8,000 rpm |
| Drive power | 2.2 kW | 2.2 kW |
| Tools for front drilling unit | ||
| Number of tools | 2 tools | 2 tools |
| Sleeve | Ø 22 mm | Ø 22 mm |
| Max. drilling depth | 115 mm | 115 mm |
| Sub spindle | SR-20R IV
type A |
SR-20R IV
type B |
|---|---|---|
| Sub spindle | X2 / Z2 / C2 axis | X2 / Z2 / C2 axis |
| Max. chucking diameter | 20 mm / 23 mm (option) |
20 mm / 23 mm (option) |
| Drive power sub spindle | 3.7 kW | 3.7 kW |
| Max. sub spindle speed | 10,000 rpm | 10,000 rpm |
| Backworking tools | ||
| Vertical axis | Y2 axis | Y2 axis |
| Drive unit (standard) | 8 tools | 8 tools |
| Max. speed | 8,000 rpm | 8,000 rpm |
