This site requires JavaScript to function properly. Please enable it in your browser settings.

Call us on 01332 864455

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
Search in posts
Search in pages
Menu

Information

Star SR-20JII

The SR-20JII Type A improves upon the long-serving SR-20J model, offering increased rigidity, accuracy and versatility through a combination of improved engineering and expanded functionality.

Combining a 6-tool turning platen with a 5-spindle cross drilling unit and a 4-spindle back working tool post, the SR-20JII boasts impressive tooling capacity allowing for a huge range of machining options.

The updated design features dovetail slideways for the X1, Y1 and Z2 axes improving the machine’s rigidity – ensuring stable, repeatable results even when cutting the most challenging materials.

The sub-spindle speed, power and accuracy have also been increased by adopting a built-in spindle motor offering 10,000 rpm and 3.7Kw.

The SR-20JII Type A represents the latest evolution in 20mm sliding head machining – and the most advanced technology of its type on the market.

Star SR-20JII

WORKPIECE

DIAMETER Diameter 20mm / 22.2mm (OPT)
LENGTH Length 205mm
GEOMETRY Geometry
C AXIS C Axis MAIN + SUB SPINDLE

Benefits

  • Improved metal removal rates with increased power on driven tools and sub-spindle
  • Switchable between guide bush and non-guide bush modes
  • Main and sub spindle speed 10,000 rpm / power 3.7Kw
  • Reduced cycle times due to more overlapped machining possibilities
  • Improved rigidity due to dovetail guideway structure
  • Increased flexibility due to more tooling configurations
  • Improved ergonomics with large cutting room and headstock "up and over" doors
  • Increased accuracy due to built-in spindle motors

Specification

MAIN SPINDLE SIDE
Number of axes7
Main spindle (headstock)Z1 / C1 axis
Tool postX1 / Y1 axis
Max. machining diameter20 mm / 22.2 mm (option)
headstock stroke (swiss type / ngb mode)205 mm
Main spindle power3.7 kW
main spindle speed10,000 rpm
main spindle tooling
Turning tool6 tools @ 12 mm SQ
DRILLING ARM SLEEVE HOLDER CAPACITY5 x Ø 22 MM SLEEVES (ER16)
POWER DRIVEN TOOL (PDT) POSITIONS3 + 2 MODULAR STATIONS
MAX (PDT) SPEED8,000 rpm
KINEMATIC DIAGRAM
Star SR-20J - Kinematic Diagram
SUB SPINDLE SIDE
Sub spindleX2 / Z2 / C2 axis
Max. chucking diameter20 mm / 22.2 mm (option)
sub spindle power3.7 kW
sub spindle speed10,000 rpm
sub spindle tooling
back-working platen positions4
max drill speed capacityER16
power driven tool (pdt) positions4 (er16)
max (pdt) speed8,000 rpm
FMBBAR FEED DIMENSION A (MM)
Micromag 08-203415 (1.6M)5015 (3.2M)6015 (4.2M)
Minimag 2-203415 (1.6M)5015 (3.2M)6015 (4.2M)
Turbo 2-203215 (2.2M)4215 (3.2M)5215 (4.2M)
Turbo 3-363320 (2.2M)4320 (3.2M)5320 (4.2M)
Star SR-20RII - Dimensions

More information

More Information - Accessories More Information - Technical Review More Information - Configurations