SR-20JII Type A/B CNC Swiss-type Automatic Lathe

• Standard Machine Specifications
• Backworking Attachment Specifications
• Standard Accessories and Functions
• Optional Accessories and Functions

• Max. Machining Diameter

  ø20mm (25/32in) OP: ø23mm (29/32in)

• Max. Headstock Stroke

  STANDARD
  205mm (8in)
  
  R.M.G.B Type
  160mm (6-19/64in)
  
  N.G.B. Type
  Bar diameter x 2.5 (Max. 50mm) (Max. 1-31/32in)
  

• Tool

  NUMBER OF TOOLS
  6 tools
  
  TOOL SHANK
  12mm

• 5-Spindle Sleeve Holder

  NUMBER OF TOOLS
  Front 5 tools
  Rear 5 tools
  
  MAX. DRILLING CAPABILITY
  ø12mm (1/2in)
  
  MAX. TAPPING CAPABILITY
  M10 x P1.5

• 2-Spindle Front Sleeve Holder

  NUMBER OF TOOLS (SLEEVE)
  2 tools
  
  MAX. DRILLING CAPABILITY
  ø10mm (25/64in)
  
  MAX. DEPTH OF HOLE
  100mm (3-15/16in)

• Power-Driven Attachment

  NUMBER OF TOOLS
  Cross Milling 3 tools (ER16 + Cartridge Type 2 Pos.
  Cross milling 3 tools (ER20 x 1, ER16 x 2) + Cartridge Type 2 Pos.
  
  MAX. DRILLING CAPABILITY
  ø10mm (25/64in)
  
  MAX. TAPPING CAPABILITY
  M8 x P1.25
  
  SPINDLE SPEED
  Max. 8,000min-1
  
  DRIVE MOTOR
  2.2kW

• Rapid Feed Rate

  35m/min (X1, X2, Z1, Z2), 24m/min(Y2) : type B only

• 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)

• Coolant Tank Capacity

  202ℓ

• Dimensions (W x D x H)

  2,250 X 1,200 X 1,700mm

• Weight

  2,750kg

• Power Consumption

  4.8kVA

• Maximum Chucking Diameter

  ø20mm (25/32in) OP: ø23mm (29/32in)

• Max. Length for Front Ejection

  100mm (3-15/16in)

• Max. Part Projection Length

  30mm (1-3in/16 in)

• Unit Especially for Backworking

  NUMBER OF TOOLS
  8 Tools (Type B) & 4 Tools (Type A)
  
  MAX. DRILLING CAPABILITY
  Stationary Tool
  ø12mm (1/2in)
  Power-Driven Tool
  ø6mm (15/64in)
  
  MAX. TAPPING CAPABILITY
  Stationary Tool
  M10 x P1.5
  Power-Driven Tool
  M5 x P0.8

• Power-driven Attachment Spindle Speed

  Max. 8,000min-1

• Power-driven Attachment Drive Motor

  1.0kW

• Sub-Spindle Min. Indexing Angle

  C-axis control

• Sub-Spindle Speed

  Max. 10,000min-1

• Sub-Spindle Motor

  2.2kW (continuous) / 3.7kW (10min/25%ED)

1. CNC Unit FANUC 32i-B
2. Operation panel 10.4 inch color LCD display
3. Pneumatic unit
4. Coolant level detector
5. Automatic centralized lubrication unit
6. Door interlock system
7. Cs contouring control (Main/Sub)
8. Spindle clamp unit (Main/Sub)
9. Revolving guide bush unit
10. Drive unit for revolving guide bush
11. Air purge for revolving guide bush
12. Main/Sub Collet
13. 6-Station tool holder (12mm)
14. Cross drilling unit (gang type tool post)
15. 5-Spindle sleeve holder
16. Broken cutoff tool detector
17. Backworking attachment
18. 4-spindle backworking unit (Type A)
19. 8-Spindle backworking unit with Y axis control function (Type B)
20. Parts conveyor
21. Sub spindle air purge unit
22. Sub spindle air blow unit
23. Drive unit for power-driven attachment (8-spindle backworking unit) (Type B)
24. Work light
25. Leakage breaker

1. Coolant flow detector
2. Water removal unit
3. Oil mist filter
4. Beacon
5. Main spindle inner tube
6. Feed arrow steady rest
7. Rotary magic guide bush unit
8. Non-guide bush type
9. Drive unit for power-driven attachment B (4-spindle backworking unit- Type A)
10. Parts ejector (Spring type)
11. Parts ejector (Air cylinder type)
12. Parts ejector with guide tube
13. Parts stopper unit
14. Coolant unit (6.9MPa/2.5MPa/0.7MPa)
15. Coolant unit signal cable
16. Coolant unit power cable
17. Coolant valve
18. Coolant pipings
19. Automatic bar feeder interface
20. LAN/RS232C interface
21. Transformer