STAR SR 20JN

Star

THE ADVANTAGES
SR-20JN – the fixed headstock variation of the SR-20J. Allows you to benefit from the proven star* advantages also with conventional turning. The removal of the guide bush unit, shorter remnants and even shorter set-up times result in further cost reductions in the production of short-turned parts.

FANUC 31i-B control system

C-axis control as standard on main and sub spindle

machine system and kinematics identical to SR-20J

high cost reduction (fixed headstock variation) through:
- short remnants
- lower requirements for bar material
- no guide bush unit
- shorter set-up times

KINEMATICS & TOOLS

6 turning tools

front and rear side each with 4 drilling tools

5 + α power-driven tools on the tool post

4 + α power-driven tools for backworking

2 deep hole drilling stations

7 axes

Technical Data

SPECIFICATIONS
Diameter20 mm / 23 mm (option)
Length55 mm
C axisMain spindle
C axisSub spindle
KINEMATICS OF THE SR-20JN
FRONT SIDE
Number of axes7
Main spindle (headstock)Z1 / C1 axis
Tool postX1 / Y1 axis
Max. machining diameter20 mm / 23 mm (option)
Max. headstock stroke (sliding head)55 mm
Max. drive power3.7 kW
Max. main spindle speed10,000 rpm
Tools on the tool post
Turning tools6 tools (□ 12 mm)
Drilling tools (4-spindle sleeve holder)4 tools (Ø 22 mm sleeve)
Cross driven tools5 tools (ER16)
(alternatively 3 tools ER16 + 2 tools ER20)
Speed8,000 rpm
SUB SPINDLE
Sub spindleX2 / Z2 / C2 axis
Max. chucking diameter20 mm / 23 mm (option)
Drive power2.2 kW
Max. sub spindle speed8,000 rpm