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 diameterØ 20 mm (25/32 in)
Max. headstock strokeStandard350mm (13-25/32in)
With R.M.G.B.317mm(12-31/64in)
Front working turret tool postFront side turret8 stations
Back side turret8 stations
Number of turning toolsMax. 3 tools/station
Tool shank12mm/16mm
Sleeve holderNumber of toolsMax. 3 tools/station
Max. drilling capabilityØ 14 mm (35/64 in)
Max. tapping capabilityM10 x P1.5
Power driven att.Number of toolsMax. 2 tools/station
Max. drilling capabilityØ 8 mm (5/16 in)
Max. tapping capabilityM6 x P1.0
Spindle speedMax. 5,750min-1
Drive motor2.5kw
Rapid feed rate30m/min (X1, X2, X3, Z1, Z2, Z3)
15m/min (Y1, Y2, Y3). 3.9m/min (YA2)
Main spindle indexing angleC-axis control
Main spindle speedMax. 10,000min-1
Main spindle motor3.7 kw (continuous)/ 5.5 kw (10min/60%ED)
Coolant tank capability213
Dimension (W x D x H)2,988 x 1,720 x 1,845 mm
Center height1,083mm (3.55ft) (including leveling pads)
Weight4,850kg
Power consumption8.5KVA
A-weighted sound pressureMax. 70dB (A)

Backworking Attachment

Max. chucking diameterØ 20 mm (25/32in)
Max. pick-up part length150 mm (5-7/8in)
Max. part projection length75 mm (2-15/16in)
Back working turret tool post8 station
Number of turning toolsMax. 3 tools/station
Tool shank12mm/ 16mm
Sleeve holderNumber of toolsMax. 3 tools/station
Max. drilling capabilityØ 14 mm (35/64 in)
Max. tapping capabilityM10 x P1.5
Power driven att.Number of toolsMax. 2 tools/station
Max. drilling capabilityØ 8 mm (5/16 in)
Max. tapping capabilityM6 x P1.0
Spindle speedMax. 5,750min-1
Drive motor2.5kw
Sub spindle indexing angleC-axis control
Sub spindle speedMax. 10,000min-1
Sub spindle motor3.7kw (continuous)/ 5.5kw (10min/60%ED)

LINKS

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