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Cincom L20 V/VII/VIII

The fastest, most efficient 7-Axis L20-series lathe ever developed by Citizen

The L20 is offered in three model types: Types V,VII, and VIII

When cross machining is required, three cross spindles (standard on type VIII model) can be mounted, totaling eighteen tools: five turning, seven rotary, and six drilling tools.

The three cross spindles can also be used as end-face drilling spindles by rotating the holder 90 degrees.

When end-face machining is required on the front and back, an optional six live tool holder is available. With this tool holder option the L20 now totals 21 tools: five turning, ten rotary, and six drilling tools.

The L20 type VII offers five turning and five live rotary tools (cross milling/drilling) on the gang plate.

When only turning is required, the L20 type V offers five turning tools on the gang plate with no live tools. As future live tool needs may be required, the type V model can be upgraded to a type VII or VIII by purchasing additional live tool holders that easily fit into the existing L20 gang tool plate. This modular concept can support a wide variety of machining processes depending on your current or future parts machining requirements.

Increased productivity

  • New Mitsubishi Meldas 700LC Control
  • Tool Post Overlap Operation
  • Axes Overlap
  • Direct Spindle Indexing Function
  • Fast and Smooth RPM Acceleration and Deceleration

FEATURES:

Synchronous-Superimposed Operation
Cav Bar Feeder
Whirling Attachment
Cincom Online

Cincom L20 VIII

Other L20 improvements

  • The work area access door has been widened, enabling easier access to the tooling
  • More power to the coolant pump with a larger capacity tank
  • The chip tank itself and its access door has been increased for longer continuous cutting plus reduces the operator frequency to remove chips
  • Lubrication of the ball screws and ways is now automatic, which improves machine maintenance and performance

NC functions and accessories
Specifications
Typical parts
Floor layout

Download the Cincom L20 brochure:
L20.pdf (2.4 MB)

Standard NC functionsTOP
NC unit dedicated to CINCOM L series
Tool offset pairs: 40 pairs
10.4-inch color liquid crystal display
Product counter display: Up to 8 digits
Operation time display
Nose R compensation function
Preparation function
Three-dimensional interference check function
Corner chamfering/rounding function
On-machine program check function
Main spindle speed change detection function
Back spindle speed change detection function
Automatic power-off function
Program storage capacity: Equivalent 20m tape (expandable to 1,200m)
Thread cutting canned cycle
Continuous threading cycle

Multiple repetitive cycle
Main spindle C axis function
Back spindle C axis function
Canned cycle for drilling
Main spindle rigid tapping function
Tool spindle rigid tapping function
Back spindle rigid tapping function
Spindle synchronization control function
Milling interpolation function
User macro
Helical interpolation function
Tool life control I
Tool life control II
Sub-inch command
Circular threading cycle
Tool offset pairs: 80 pairs (maximum)

Main standard accessories

Optional accessories
Main standard accessories
Main spindle chucking device
Rotary guide bushing drive device
Rotary guide bushing device
Coolant device (with level sensor)
Door switch/Door lock
Workpiece separator
Lubrication device (with level sensor)
Back spindle chucking device
Rotary tool spindle drive unit for gang tool *
Work light

* Only type VII and VIII

Fixed guide bushing device
Rotary tool spindle drive device for the front/back spindle
Cut-off tool breakage detector
Workpiece conveyor
Chip conveyor
Coolant flow-rate detecting device
Signal lamp
Long workpiece device
Machine specificationsTOP
Item L20
V VII VIII
Max. machining diameter Φ 20 mm (.79") Φ 20 mm (.79") Φ 20 mm (.79")
Max. machining length 200 mm (7.87") 200 mm (7.87") 200 mm (7.87")
Max. front drilling diameter Φ 10 mm (.39") Φ 10 mm (.39") Φ 10 mm (.39")
Max. front tapping size (with tap and die) M8 M8 M8
Spindle through-hole diameter Φ 24 mm (.94") Φ 24 mm (.94") Φ 24 mm (.94")
Main spindle speed 10,000 rpm 10,000 rpm 10,000 rpm
Max. drilling diameter in the rotary gang tool machining process Φ 7 mm (.28") Φ 7 mm (.28") Φ 8 mm (.32")
Max. tapping diameter in the rotary gang tool machining process M6 M6 M6
Rotary spindle speed — 4,500 rpm 4,500 rpm
Max. chuck diameter of the back spindle Φ 20 mm (.79") Φ 20 mm (.79") Φ 20 mm (.79")
Max. workpiece length for the front side collection from the back spindle 80 mm (3.15") 80 mm (3.15") 80 mm (3.15")
Max. drilling diameter in the back machining process Φ 8 mm (.32") Φ 8 mm (.32") Φ 8 mm (.32")
Max. tapping diameter in the back machining process M6 M6 M6
Back spindle speed 8,000 rpm 8,000 rpm 8,000 rpm
Number of tools to be mounted 11 16 18 ~ 21
Turning tools on the gang tool post 5 5 5
Rotary tools on the gang tool post — 5 7
Rotary tools for front spindle — — 2 (option)
Tools for front spindle 3 3 3
Rotary tools for back spindle — — 2 (option)
Tools for back spindle 3 3 3
Tool size
Gang tool post (tool) 1/2" (T01 5/8") 1/2" (T01 5/8") 1/2" (T01 5/8")
Sleeve Φ 19.05 mm (.75") Φ 19.05 mm (.75") Φ 19.05 mm (.75")
Rapid feed rate
All axes 32 m/min (104.99 ft/min) 32 m/min (104.99 ft/min) 32 m/min (104.99 ft/min)
Motor
Main spindle drive 2.2/3.7 KW 2.2/3.7 KW 2.2/3.7 KW
Tool spindle drive 1.0 KW 1.0 KW 1.0 KW
Back spindle drive 0.75/1.5 KW 0.75/1.5 KW 0.75/1.5 KW
Cutting oil 0.4 KW 0.4 KW 0.4 KW
Center height 1,050 mm (41.34") 1,050 mm (41.34") 1,050 mm (41.34")
Input power capacity 6 KVA 6 KVA 6 KVA
Air pressure and air flow rate for air-driven equipment 0.5 MPa · 50 Nl/min 0.5 MPa · 50 Nl/min 0.5 MPa · 50 Nl/min
Weight 2,100 Kg (4,629.7 lbs) 2,100 Kg (4,629.7 lbs) 2,100 Kg (4,629.7 lbs)

TOPTypical Parts

For parts up to .79" diameter x 7.9" long per chucking.

  • Contouring
  • Threading
  • Milling
  • Slotting
  • Cross Work
    Drilling
    Off center drilling
    Tapping
    Reaming
  • End Work
    Milling
    Drilling
    Tapping
    Reaming
    Boring

TOPL20 Floor layout

Maximum height: 1,770 mm (69.7") including mount

*A and L dimensions vary depending on bar feeder type


All specifications are subject to change without prior notice.

This product is subject to the export control laws of the United States and other countries. A license may be required prior to export, re-export or transfer of these products. Contact us for further information.

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