CNC sliding head lathes

SR-20R IV type A / B

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
SR-20R IV
specifications
Diameter Diameter 20 mm / 23 mm (option)
Length Length 205 mm / 50 mm (fixed headstock lathe)
Machining options Geometry
C axis C axis Main spindle
C axis C axis Sub spindle

Kinematics of the SR-20R IV

Front Side SR-20R IV
type A
SR-20R IV
type B
Number of axes 8 9
Main spindle (headstock) Z1 / C1 axis Z1 / C1 axis
Tool post X1 / Y1 axis X1 / Y1 / B axis
Max. machining diameter 20 mm /
23 mm (option)
20 mm /
23 mm (option)
Max. headstock stroke
(sliding head / fixed headstock lathe)
205 mm / 50 mm 205 mm / 50 mm
Max. drive power 3.7 kW 3.7 kW
Max. main spindle speed 10,000 rpm 10,000 rpm
Tools on the tool post
Turning tools 7 tools
(□ 12mm)
7 tools
(□ 12mm)
Drilling tools
(4-spindle sleeve holder)
4 tools (ER16) 4 tools (ER16)
Cross driven tools 5 tools (ER16) 5 tools (ER16)
B axis (e.g. for skewed hole machining) 3 tools (ER16)
main spindle
3 tools (ER16)
main spindle
3 tools (ER16)
rear side
3 tools (ER16)
rear side
Max. speed 8,000 rpm 8,000 rpm
Drive power 2.2 kW 2.2 kW
Tools for front drilling unit
Number of tools 2 tools 2 tools
Sleeve Ø 22 mm Ø 22 mm
Max. drilling depth 115 mm 115 mm
Sub spindle SR-20R IV
type A
SR-20R IV
type B
Sub spindle X2 / Z2 / C2 axis X2 / Z2 / C2 axis
Max. chucking diameter 20 mm /
23 mm (option)
20 mm /
23 mm (option)
Drive power sub spindle 3.7 kW 3.7 kW
Max. sub spindle speed 10,000 rpm 10,000 rpm
Backworking tools
Vertical axis Y2 axis Y2 axis
Drive unit (standard) 8 tools 8 tools
Max. speed 8,000 rpm 8,000 rpm
SR-20R IV