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Star SR-20RIV Type A

The SR-38 Type A sliding head lathe provides maximum functionality and capacity within a compact footprint. This model can easily be switched between guide bush mode (Swiss type) and non-guide bush modes with the ability to process raw material up to 42mm (in NGB mode). The independent X3 slide enables balanced cutting on the main spindle for maximum metal removal.

Fanuc’s high specification user friendly 31i-B control makes programming highly complex components simple and undemanding. The Type A’s manual B-axis tool post includes three front working and 3 counter-face tool stations for angular work on both main and sub-spindles.

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.

Star SR-20RIV Type A

WORKPIECE

DIAMETER Diameter 38mm / 42mm (NGB)
LENGTH Length 320mm / 95mm
GEOMETRY Geometry
C AXIS C Axis MAIN + SUB SPINDLE

Benefits

  • Standard machining diameter 38mm (42mm NGB mode)
  • Z1 Stroke of 320mm in Swiss mode (Guide Bush)
  • Switchable between guide bush and non-guide bush modes
  • Manual B axis for angular machining on both spindles
  • Independent X3 slide for balanced turning operations (main spindle)
  • Hydraulic actuator (main spindle) for maximum gripping force
  • Built-in type main and sub-spindle for improved indexing accuracy
  • 8 Station sub-spindle platen for maximum overlapping

Specification

MAIN SPINDLE SIDE
Number of axes10
Main spindle (headstock)C1 / Z1 axis
MAIN SPINDLE PLATENX1 / X3 / Y1 / B1 AXIS
MAX. MACHINING DIAMETER38 MM (SWISS TYPE) / 42 MM (NGB MODE)
HEADSTOCK STROKE (SWISS TYPE / NGB MODE)320 MM / 95 MM
MAIN SPINDLE POWER11.0 KW
MAIN SPINDLE SPEED7,000 RPM
MAIN SPINDLE TOOLING
Turning tool6 TOOLS @ 16 MM SQ + 1 TOOL @ 20 MM SQ (CUT-OFF)
DRILLING ARM SLEEVE HOLDER CAPACITY3 x Ø 22 MM SLEEVES (ER16) + 2 x Ø 32 MM SLEEVE (ER20)
POWER DRIVEN TOOL (PDT) POSITIONS4 + 3 (B AXIS) + 2 MODULAR STATIONS
MAX (PDT) SPEED6,000 RPM
KINEMATIC DIAGRAM
Star SR-20RIV Type B - Kinematic Diagram
SUB SPINDLE SIDE
Sub spindleX2 / Y2 / Z2 / C2 AXIS
Max. chucking diameter38 MM (SWISS TYPE) / 42 MM (NGB MODE)
SUB SPINDLE POWER5.5 KW
SUB SPINDLE SPEED7,000 rpm
SUB SPINDLE TOOLING
BACK-WORKING PLATEN POSITIONS8
MAX DRILL SLEEVE CAPACITYER25
POWER DRIVEN TOOL (PDT) POSITIONS8 (ER16)
MAX (PDT) SPEED6,000 RPM
FMBBAR FEED DIMENSION A (MM)
Turbo 5-554416 (3.2M)4516 (4.2M)7416 (6.2M)
Star SB-20R Type G - Dimensions

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