STAR SR-20R IV

Star

THE ADVANTAGES
The SR-20R IV CNC sliding head lathe is the latest development of the tried and tested "SR-20" series.

In addition to the innovative characteristics of the SR-20R III, the SR-20R IV has an extra B axis and Y axis on the rear side.

8 backworking tools allow more possibilities for overlapped machining.

• FANUC 31i-B5 control system
• C-axis control as standard on main and sub spindle
• completely independent backworking
• changeable from sliding head to fixed headstock lathe
• movable control panel
• 2 additional deep drilling stations
• B axis for front and rear side on the tool post

KINEMATICS & TOOLS
• 7 turning tools
• front and rear side each with 4 drilling tools
• 8 + α power-driven tools on the tool post
• 11 + α power-driven tools for backworking
• 2 deep hole drilling stations
• 8 axes type A / 9 axes type B

Technical Data

SPECIFICATIONS
Diameter20 mm / 23 mm (option)
Length205 mm / 50 mm (fixed headstock lathe)
C axisMain spindle
C axisSub spindle
KINEMATICS OF THE SR-20R IV
FRONT SIDE
Number of axes8 (Type A), 9 (Type B)
Main spindle (headstock)Z1 / C1 axis
Tool postX1 / Y1 axis (Type A), X1 / Y1 / B axis (Type B)
Max. machining diameter20 mm / 23 mm (option)
Max. headstock stroke (sliding head / fixed headstock lathe)205 mm / 50 mm
Max. drive power3.7 kW
Max. main spindle speed10,000 rpm
Tools on the tool post
Turning tools7 tools (□ 12mm)
Drilling tools (4-spindle sleeve holder)4 tools (ER16)
Cross driven tools 5 tools (ER16)
B axis (e.g. for skewed hole machining)3 tools (ER16) main spindle, 3 tools (ER16) rear side
Max. speed8,000 rpm
Drive power2.2 kW
Tools for front drilling unit
Number of tools2 tools
SleeveØ 22 mm
Max. drilling depth115 mm