Star CNC SX-38 Type B
Category: Star CNC


The latest series from Star Micronics is the SX Series, a versatile, powerful and heavy-duty solution for machining complex mill-turn parts. Combining some of the best features from the SV, ST and SR series, the new SX-38 Type A gives users the opportunity to expand their machining capabilities and maximize productivity.

The Star SX-38 Type B, a 12-axis compact Swiss-style machine with slant-bed construction, maximizes productivity for difficult-to-machine materials up to 42mm diameter.  The capability to keep 80 tools resident with high horsepower motors means heavy metal removal rates and flexibility.  B-axis surfacing with up to 135 degree travel handles up to 0.5″ diameter tooling.

This high-functioning, large-diameter model – with gang-type and turret-type tool posts – serves the precision machining requirements demanded by the medical, automotive, and aviation industries. The gang-type tool post is equipped with the 4-spindle counter face milling unit with B-axis control function.


  • Standard machining diameter 38mm
  • Z1 stroke of 320mm in Swiss mode, 95mm in non-guide bush mode
  • Enhanced functionality includes, the gang-type tool post is equipped with the 4-spindle counter face milling unit with B-axis control function *1. Control of turning angels at the range from 0 deg. to 90 deg. and from 0 deg. to -45 deg. is possible.
  • In addition to type A, quick-changeable turret-type tool post enabling use of the existing tool units, type B, turret-type tool post with one-position tool drive mechanism is lined up
  • The layout of the tool post with slanted bed frame greatly improved setup and maintenance workability
  • The 4-spindle counter face milling unit employs the structure for holding the upper and lower ends.
  • The hydraulic rotary cylinder installed in the main chucking mechanism secures stable gripping force regardless of variation of workpiece diameters
  • The thermal sensors installed on various positions of the machine achieve highly accurate and flexible thermal displacement correction




Standard Machine Specs

Max.machining diameter Standard ø 38mm (1-1/2in)
Max.headstock stroke Standard 320mm (13-19/32in)
R.M.G.B.unit 289mm (11-3/8in): OP
N.G.B.type 95mm (3-47/64in)
Tool post configuration Gang type Turning tool
+ Power-driven tool
Number of turning tools Gang type 4 tools
Sleeve Number of tools Max. 3 tools / Station
Max.drilling capability ø 23mm (29/32in)
Max.tapping capability M16 × P2.0
Power-driven attachment Number of tools Gang type Front: 4 tools,
Rear: 4 tools
Max.drilling capability ø 10mm (25/64in)
Max.tapping capability M8×P1.25
Spindle speed Gang type max.6,000min-1
Turret type max.5,700min-1
Drive motor 2.2kw
Rapid feed rate 30m/min
Main spindle indexing angle C-axis control
Main spindle speed max.7,000min-1
Main spindle motor 7.5kw(Continuous)/
Coolant tank capability 284 l
Dimensions (W×D×H) 2,955 × 1,430 × 1,975mm
Power consumption 14,4kVA

Backworking Attachment

Max.chucking diameter ø 38mm(1-1/2in)
Max.length for front ejection 150mm(5-7/8in) projection length 75mm(2-61/64in)
Sub spindle speed Number of tools Stationary tool Max. 8 tools
Power driven tool Max. 8 tools
Max. drilling capability Stationary tool ø23mm (29/32in)
Power driven tool ø10mm (25/642in)
Max. tapping capability Stationary tool M16 x P2.0
Power driven tool M8 x P1.25
Power driven att. spindle speed max. 5000min-1
Power driven att. drive motor 1.2kW / 2.2kW
Sub spindle indexing angle C-axis control
Sub spindle speed Max. 7000min-1
Sub spindle motor 7.5kW / 11kW