Ever-Evolving SR-20JII with versatile features to respond to varied needs.

  • A unique slanted dovetail slideway structure for insreased rigidity of the tool post.
  • Type A is equipped with a 4-spindle type and Type B is equipped with Y-axis control / 8-spindle type backworking tool post.
  • The guide bush and non-guide bush are interchangeable. The non-guide bush type incorporates a spindle sleeve slide guideway structure for higher spindle rigidity.
  • RMGB
  • Slanted dovetail slideway structure
  • GB/NGB switchover

Tool Post

Tool Post
Tool Post Tooling
5-Spindle cross
drilling unit
Turning tool 6 tools
Frong-end working tool 7 tools
Rear-end working tool 5 tools
Power-driven tool(ER16) 3 tools
Cartridge type 2 pos.
5-Spindle cross
drilling unit ER16/20
Turning tool 6 tools
Frong-end working tool 7 tools
Rear-end working tool 5 tools
Power-driven tool(ER20) 1 tools
Power-driven tool(ER16) 2 tools
Cartridge type 2 pos.
*Type B
Rear-end working tool 8 tools
Stationary tool max.8 tools
Power-driven tool max.8 tools
*Type A
Rear-end working tool 4 tools
Stationary tool max.4 tools
Power-driven tool max.4 tools


Item SR-20JII
Max.machining diameter Standard ø 20mm (25/32in)
Max.headstock stroke Standard 205mm (8in)
R.M.G.B.unit 160mm (6-19/64in)
N.G.B.type 50mm (1-31/32in)
Tool post configuration Gang type Turning tool + 5-spindle sleeve holder
+ Power-driven tool
Number of turning tools Gang type 6 tools(□12mm)
5-spindle sleeve holder Number of tools Front : 5 tools
Rear : 5 tools
Max.drilling capability ø 12mm (1/2in)
Max.tapping capability M10 × P1.50
2-spindle front sleeve holder Number of tools 2tools
Max.drilling capability ø 10mm (25/64in)
Max.depth of hole 100mm (3-15/16in)
Power-driven att. Number of tools Gang type 3-15 tools (Option is included)
Max.drilling capability ø 10mm (25/64in)
Max.tapping capability M8×P1.25
Spindle speed Cross milling max.8,000min-1
Cartridge-type tool max.8,000min-1
Drive motor 2.2kw
Rapid feed rate 35m/min(X1,X2,Y1,Z1,Z2)
24m/min(Y2) *Type B
Main spindle indexing angle C-axis control
Main spindle speed max.10,000min-1
Main spindle motor 2.2kw(Continuous)/3.7kw(10min./25%ED)
Dimensions (W×D×H) 2,250 × 1,200 × 1,700mm
Weight 2,750kg
Power consumption 4.8KVA

Backworking Attachment

Item SR-20JII
Max.chucking diameter ø 20mm (25/32in)
Max.length for front ejection 100mm (3-15/16in) projection length 30mm (1-3/16in)
Backworking unit Number of tools 4-8 tools (type A:4 tools, type B:8 tools)
Max.drilling capability Stationary tool ø 12mm (1-2in)
Power-driven att. ø 6mm(15/64in)
Max.tapping capability Stationary tool M10 × P1.5
Power-driven att. M5 × P0.8
Sub spindle indexing angle C-axis control
Sub spindle speed max.10,000min-1
Sub spindle motor 2.2kw(Continuous)/3.7kw(10min./25%ED)

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