Star SD-26 Type S
Category: Star CNC


The new SD-26 Swiss-type automatic lathe was developed specifically to meet the complex, small parts machining needs of up to 1” (26mm) diameter parts. Meeting the diverse manufacturing needs across multiple industries.

Double B-axis programmable units: B1 axis – 4-spindle milling unit with 135° of travel capable of programming simultaneous 5-axis control; B2 axis – provides identical capability for various tooling units including the industry’s first twin-thread whirling unit incorporating a brake to maintain rigidity while machining.


  • Reconfigured machine structure for improved access to the guide bush and tool post
  • A function for batch input/output of NC programs together with related information such as offset data
  • Various help functions including a command help function that allows you to check the various commands on the NC screen





Standard Machine Specs

Max.machining diameter ø 26mm (1-1/64in)
Max.headstock stroke Standard 260mm (10-15/64in)
R.M.G.B.unit 223.5mm (8-51/64in)
N.G.B.type max.65mm (2-35/64in)
Number of turning tools 5 tools on the front + 2 tools on the rear
sleeve holder
Number of tools Front : 5 tools
Rear : 5 tools
Max.drilling capability ø 13mm (33/64in)
Max.tapping capability M12 x P1.75
sleeve holder
Number of tools 2
Max.drilling capability ø 10mm (25/64in)
Max.depth of hole 100mm (3-15/16in)
Power-driven att. Number of tools Power-driven tool with B-axis : At 1 position(Front 4 tools + Rear 4 tools)
Number of tools Front Cross milling : 4 tools or Cartridge type : At 4 position
Upper Cartridge type : At 2 position
Max.drilling capability Tilting head unit ø 8mm (5/16in)
Front/Upper ø 10mm (25/64in)
Max.tapping capability Tilting head unit M8 x P1.25
Front/Upper M8 x P1.25
Spindle speed max.8,000min-1
Drive motor 2.2kw(Continuous) / 3.0kw(5min./30%ED)
Rapid feed rate 36m/min(X1,Y1,Z1,X2,Z2)
Main spindle indexing angle C-axis control
Main spindle speed max.10,000min-1
Main spindle motor 5.5kw(Continuous) / 7.5kw(10min./25%ED)
Dimensions (WxDxH) 2,550 x 1,300 x 1,995mm
Weight 3,600kg
Power consumption 9.9KVA

Backworking Attachment

Max.chucking diameter ø 26mm (1-1/64in)
Max.length for front ejection 90mm (3-17/32in) projection length 40mm (1-9/1/6in)
backworking unit
Number of tools 8 tools
Max.drilling capability Stationary tool ø 13mm (33/64in)
Power-driven att. ø 8mm (5/16in)
Max.tapping capability Stationary tool M12 x P1.75
Power-driven att. M6x P1.0
Sub spindle indexing angle C-axis control
Sub spindle speed max.10,000min-1
Sub spindle motor 3.7kw(Continuous) / 5.5kw(10min./40%ED)