Star CNC ST-20

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Description

INFORMATION

The latest in the ST machine series from Star Micronics, the ST-20 comes equipped with the highest-ever specifications and functions in the 20mm class. Designed for high productivity and equipped with superb complex machining capability, the ST-20 makes a great choice for suppliers of high-value parts across many industries.

With some of Star’s most advanced simultaneous machining technology on board, the ST-20 provides six distinct varieties of front and rear end machining, enabling skewed hole drilling, front and back cross milling, and independent back machining. Both spindles are capable of the same level of machining, enabling complex parts to be completed to a high standard with incredibly short cycle times.

A formidable array of turret tool posts allows for a vast number of possible tooling configurations, reducing setup times and enabling seamless multi-process machining. The ST-20 is one of Star’s most progressive machines to date – backed up with our trademark reliability and class-leading support, it is a truly powerful and productive machining centre.

BENEFITS

  • Standard machining diameter 20mm (22.2mm OPT)
  • Z1 Stroke of 350mm
  • Twin turrets on main spindle for balanced turn-mill operations
  • Powerful 5.5Kw on main & sub spindles
  • Z3 axis enables SUPER-POSITION control for increased overlap
  • YA2 axis on sub-spindle enables off-center pick up
  • Tool pre-setter included for easy tool set-up
  • STAR MOTION CONTROL to minimize idle time
  • Independent turret for sub-spindle for maximum overlap

DEMO VIDEO

KINEMATIC DIAGRAM

SPECIFICATIONS

Standard Machine Specs

Max. machining diameter Ø 20 mm (25/32 in)
Max. headstock stroke Standard 350mm (13-25/32in)
With R.M.G.B. 317mm(12-31/64in)
Front working turret tool post Front side turret 8 stations
Back side turret 8 stations
Number of turning tools Max. 3 tools/station
Tool shank 12mm/16mm
Sleeve holder Number of tools Max. 3 tools/station
Max. drilling capability Ø 14 mm (35/64 in)
Max. tapping capability M10 x P1.5
Power driven att. Number of tools Max. 2 tools/station
Max. drilling capability Ø 8 mm (5/16 in)
Max. tapping capability M6 x P1.0
Spindle speed Max. 5,750min-1
Drive motor 2.5kw
Rapid feed rate 30m/min (X1, X2, X3, Z1, Z2, Z3)
15m/min (Y1, Y2, Y3). 3.9m/min (YA2)
Main spindle indexing angle C-axis control
Main spindle speed Max. 10,000min-1
Main spindle motor 3.7 kw (continuous)/ 5.5 kw (10min/60%ED)
Coolant tank capability 213
Dimension (W x D x H) 2,988 x 1,720 x 1,845 mm
Center height 1,083mm (3.55ft) (including leveling pads)
Weight 4,850kg
Power consumption 8.5KVA
A-weighted sound pressure Max. 70dB (A)

Backworking Attachment

Max. chucking diameter Ø 20 mm (25/32in)
Max. pick-up part length 150 mm (5-7/8in)
Max. part projection length 75 mm (2-15/16in)
Back working turret tool post 8 station
Number of turning tools Max. 3 tools/station
Tool shank 12mm/ 16mm
Sleeve holder Number of tools Max. 3 tools/station
Max. drilling capability Ø 14 mm (35/64 in)
Max. tapping capability M10 x P1.5
Power driven att. Number of tools Max. 2 tools/station
Max. drilling capability Ø 8 mm (5/16 in)
Max. tapping capability M6 x P1.0
Spindle speed Max. 5,750min-1
Drive motor 2.5kw
Sub spindle indexing angle C-axis control
Sub spindle speed Max. 10,000min-1
Sub spindle motor 3.7kw (continuous)/ 5.5kw (10min/60%ED)

LINKS

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