Information
The SV-20R combines the fast processing ability of a traditional platen type sliding head lathe with the flexibility of a turret machine. The main spindle benefits from a gang type tool post and an 8 station turret to enable simultaneous machining operations. The turret includes an independent Z3 axis, this axis allows two different features to be machined simultaneously (Z1 + Z3) using Star’s “super-position” control mode.
Fanuc’s high specification 31i-B5 control delivers full five axis capability enabling highly complex components to be processed. The B-axis tool holders on the turret enable angular features to be machined on both the main and sub-spindle.
The powerful sub-spindle with independent 8 station platen increases overlapped machining possibilities. The Y2 axis on the sub-spindle platen allows both cross working and front facing power tools to be mounted in any station.
WORKPIECE |
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DIAMETER | ![]() |
20mm / 22.2mm |
LENGTH | ![]() |
205mm / 50mm |
GEOMETRY | ![]() |
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C AXIS | ![]() |
MAIN + SUB SPINDLE |
Benefits
- Standard machining diameter 20mm (22.2mm optional)
- Z1 Stroke of 205mm in Swiss mode (Guide Bush)
- Z3 axis enables SUPER-POSITION control for increased overlap
- Switchable between guide bush and non-guide bush modes
- Main spindle speed 10,000 rpm, sub-spindle speed 10,000 rpm
- Built-in type main and sub-spindle motors for improved indexing accuracy
- Programmable B axis for angular machining
- STAR MOTION CONTROL to minimize idle time
- 8 Station sub-spindle platen for maximum overlapping
Specification
MAIN SPINDLE SIDE | |
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Number of axes | 12 |
Main spindle (headstock) | Z1 / Z3 / C1 AXIS |
MAIN SPINDLE PLATEN | X1 / Y1 / X3 / Y3 / B3 AXIS |
Max. machining diameter | 20 MM / 22.2 MM (OPTION) |
HEADSTOCK STROKE (SWISS TYPE / NGB MODE) | 205 MM / 50 MM |
MAIN SPINDLE POWER | 5.5 KW |
MAIN SPINDLE SPEED | 10,000 rpm |
MAIN SPINDLE TOOLING | |
TURNING TOOL | 7 TOOLS @ 12 MM SQ (GANG) + 8 TOOLS (TURRET) |
TURRET SLEEVE HOLDER CAPACITY | Ø 22 MM SLEEVES (ER16) + Ø 32 MM SLEEVES (ER20) |
POWER DRIVEN TOOL (PDT) POSITIONS | 5 GANG TOOLS + 8 TURRET STATIONS |
MAX (PDT) SPEED | 8,000 RPM (GANG) / 5750 RPM (TURRET) |
KINEMATIC DIAGRAM |
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SUB SPINDLE SIDE | |
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Sub spindle | X2 / Y2 / Z2 / C2 AXIS |
MAX. CHUCKING DIAMETER | 20 MM / 22.2 MM (OPTION) |
SUB SPINDLE POWER | 3.7 KW |
SUB SPINDLE SPEED | 10,000 rpm |
SUB SPINDLE TOOLING | |
BACK-WORKING PLATEN POSITIONS | 8 |
MAX DRILL SLEEVE CAPACITY | ER16 |
POWER DRIVEN TOOL (PDT) POSITIONS | 8 |
MAX (PDT) SPEED | 8,000 RPM |
FMB | BAR FEED DIMENSION A (MM) | ||
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Micromag 08-20 | 3415 (1.6M) | 5015 (3.2M) | 6015 (4.2M) |
Minimag 2-20 | 3415 (1.6M) | 5015 (3.2M) | 6015 (4.2M) |
Turbo 2-20 | 3215 (2.2M) | 4215 (3.2M) | 5215 (4.2M) |
Turbo 3-36 | 3320 (2.2M) | 4320 (3.2M) | 5320 (4.2M) |

Video Demonstration
More information


