Diameter 20 mm / 23 mm (option)
Headstock stroke 205 mm / 50 mm (fixed headstock lathe)
Machining possibilities

Kinematics & tools

  • 7-station tool holder on the tool post
  • 5 power-driven tools for cross machining on tool post
  • 8 + α tools for turning, drilling and cross machining on the turret
  • 4 turret stations (programmable) for B axis machining
  • 8 + α power-driven tools including sleeves for backworking
  • 12 axes





The new SV-20R CNC automatic lathe updates the proven SV series. The machine combines the machining possibilities of sliding and fixed headstock lathes in a unique way and continues the impressive success of the SV-20 series from the star* company. Every second turret station has been equipped with a flexible B axis and the backworking offers versatile, time-overlapped possibilities with 8 tool stations.


  • FANUC 31i-B5 control system with electronic handwheel
  • C axis control as standard on main and sub spindle
  • fully independent backworking with 8 stations
  • convertible from sliding headstock to fixed headstock lathe
  • movable control panel
  • tool post and turret for simultaneous machining on the front side
  • additional longitudinal axis on the turret
  • Flexible B axis programmable for each second turret
  • three fully independent tool systems
  • turret drive power 4 kW
General information SV-20R
Number of axes 12
Max. rapid traverse speed 30 m/min
Weight 4,150 kg
Coolant tank capacity 220 litres
Dimensions (L x W x H) approx. 2,730 x 1,350 x 1,865 mm

Main spindle side SV-20R
Number of axes 6
Axes main spindle (headstock) Z1 / C1
Axes tool post X1 / Y1
Axes turret B3 / X3 / Y3 / Z3
B axis on revolver freely programmable
Max. machining diameter 20 mm / 23 mm (option)
Max. headstock stroke (sliding/fixed headstock) 205 mm / 50 mm
Max. main spindle drive power 5.5 kW
Max. main spindle speed 10,000 1/min
Tools on the tool post  
Turning tools 7 tools (□ 12 mm)
Cross machining tools 5 tools (ER16)
Max. cross machining drive power 2.2 kW
Max. cross machining speed 8,000 rpm
Tools on the turret  
No. of tool stations 8 units (all power-driven)
B axis 4 Stationen
Max. cross machining drive power 4.0 kW
Max. cross machining speed 5,750 rpm

Sub spindle side SV-20R
Number of axes 4
Axes sub spindle X2 / Z2 / C2
Vertical axis for backworking Y2
Max. chucking diameter 20 mm / 23 mm (option)
Max. sub spindle drive power 3.7 kW
Max. sub spindle speed 8,000 rpm
Backworking tools  
Tool stations 8 units (8 power-driven)
Max. backworking speed 8,000 rpm

Standard scope of delivery

  • FANUC 31i-B5 control system with electronic handwheel
  • C axis control as standard on main and sub spindle
  • synchronously driven guide bush unit
  • 7-station tool holder on the tool post
  • 5 + α power-driven tools for cross machining on the tool post
  • 8 + α power-driven tools for turning, drilling and cross machining on the turret
  • 4 turret stations (programmable) for B axis machining
  • 8 + α power-driven tools including sleeves for backworking
  • broken cut-off tool detector
  • parts ejection detector
  • sub spindle for backworking
  • sub spindle air blow unit
  • parts receptacle
  • pneumatic unit with maintenance unit
  • parts ejection detector for the sub spindle
  • parts conveyor to remove the parts
  • oil lubrication system
  • separate coolant tank with level monitoring and coolant flow detector
  • bar feeder interface
  • levelling pads and adjustment screws
  • worklight
  • toolbox with special tools

  • metric input
  • tool nose radius compensation
  • constant cutting speed for main and sub spindle
  • multiple canned cycles
  • operating hours display
  • parts counter
  • automatic power supply cut-off function
  • interfaces to input and read data
  • program sequence controllable with electronic handwheel
  • cylindrical interpolation
  • polar coordinate interpolation
  • polygon machining
  • helical interpolation
  • 3D coordinate conversion mode

  • bar feeding: bar feeder
  • chip disposal: chip conveyor
  • long parts ejector
  • beacon: acc. to customer requirements
  • high pressure unit: 50 to 300 bar
  • fire protection: small fire extinguishing system
  • complete filtration coolant
  • Tools in the internet at

Metal cutting

Selection from our

range of tools

Your advantages

with star Micronics

  • Training
    STAR Micronics GmbH offers special training sessions for machine operators. You as customer can decide whether to have the training in our company or on your premises. The training is naturally exclusively for your personnel and specifically designed for your range of parts.
  • High pressure unit
    The machine can be retrofitted with high pressure units from 50 to 300 bar. In addition, other developments are available to you, such as programmable pressure control or complete filtration.
  • Cooling lubricants
    The machine can be run with oil or with aqueous emulsions. However, we recommend the use of oil as this is far more beneficial to the longevity of the machine.
  • Bar feeder
    All commonly available bar feeders (FMB/IEMCA/LNS) can be used with the machine. The software interface is included in the machine as standard.
  • Chip conveyor
    The machine can be fitted with a chip conveyor or a chip flushing system.
  • Peripherals
    Peripheral components such as parts separators, purchased coolant units (oil/emulsion), coolant filters, fire protection systems and TPM (tool process monitoring) can also be offered. A retrofit of peripheral components is always possible.
  • Service
    SSC star* Service Connect as 24/7 customer portal and online connectivity for your machines, tickets and service calls. A current overview can be called up at any time. In addition, you have access to the star* knowledge database

You will receive a quotation for a star* SV-20R with a standard configuration.


Contact information
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SV-20R brochure

HFT Flyer

SV-20R brochure

HFT Flyer