Citizen Cincom L20-X
Image: citizenmachinery.co.uk, Citizen Machinery
Key Specifications
Max Spindle
Tool Capacity
max machining diameter
max machining length
max machining length gb 25mm dia spec
max machining length gbl
How much does the Citizen Cincom L20-X cost?
Estimated price range
Our best estimate for a swiss-type lathe in this class — not a quote from Citizen Machinery. Configuration moves it a long way.
Overview
The Citizen Cincom L20-X has the largest tool count of the five current third-generation L20 types, 45, and it adds a Y2 axis and back rotary tools to the 20 mm (25 mm optional) sliding-headstock platform. Main and back spindles both run to 10,000 rpm.
The back end is where it earns its place. Back rotary tools drill to 5 mm and tap to M4, running at up to 7,500 rpm (rated 6,000 rpm) on a 0.75 kW drive, and the Y2 axis that positions them rapids at 8 m/min. That allows off-centre holes, flats and small slots on the cut-off face to be finished in the same cycle, while the main spindle starts the next part. The back spindle itself drills to 8 mm and taps to M8. There are 8 back drilling tools, twice the 4 of the Cincom L20-VIII, and 6 front drilling tools against its 3.
At the front, the gang tool post keeps the full 25 rotary positions and 6 turning tools of the type VIII. That is the difference from the Cincom L20-XII, which shares this back-end equipment but lists 21 gang rotary positions and 41 tools. Gang rotary tools drill 8 mm and tap M6 at up to 6,000 rpm (rated 4,500 rpm); the S3 high-power specification raises them to 9,000 rpm and 2.2 kW.
Strokes are unchanged across the family: 200 mm per chucking with the guide bush at 20 mm, 188 mm in the 25 mm specification and 50 mm guide-bushless. The front spindle motor is rated 2.2/3.7/5.5 kW (continuous/15 minute/10%ED). The extra axis and tooling add weight, 2,680 kg here, while the W2,222 × D1,265 × H1,835 mm footprint and the 8.3 kVA power rating stay the same.
Full Specifications
| Parameter | Value |
|---|---|
| Max Machining Diameter | 20 mm dia.(25 mm dia.OP.) |
| Max Machining Length | 200 mm per chucking |
| Max Machining Length Gb 25mm Dia Spec | 188 mm per chucking |
| Max Machining Length Gbl | max. 50 mm per chucking (GBL) |
| Max Drilling Diameter | 10 mm dia. |
| Max Tapping Diameter | M8 (cutting tap) |
| Spindle Bore | 26.4 mm dia. |
| Max Spindle Speed | max. 10,000 rpm |
| Sub Spindle Chuck Diameter | dia. 20 mm, dia. 25 mm[1”]option |
| Max Part Ejection Length | 130 mm |
| Max Workpiece Protrusion Length of Back Spindle | 40 mm |
| Back Machining Max Drilling Diameter | 8 mm dia. |
| Back Machining Max Tapping Diameter | M8 (cutting tap) |
| Sub Spindle Speed | max. 10,000 rpm |
| Gang Tool Post Rotary Tool Max Drilling Diameter | 8 mm dia. |
| Gang Tool Post Rotary Tool Max Tapping Diameter | M6 (cutting tap) |
| Gang Tool Post Rotary Tool Spindle Rotation | max. 6,000 rpm (rated speed: 4,500 rpm) |
| Gang Tool Post Rotary Tool | S3 high-power motor specifications: max. 9,000 rpm (rated speed: 9,000 rpm) |
| Rotary Tools on The Opposite Tool Post | max. 6,000 rpm (rated speed:4,500 rpm) |
| Rotary Tools on The Opposite Tool Post Max Drilling Diameter | 5 mm dia. |
| Rotary Tools on The Opposite Tool Post Max Tapping Diameter | M4 (cutting tap) |
| Rotary Tools on The Opposite Tool Post Spindle Rotation | max. 7,500 rpm (rated speed:6,000 rpm) |
| Back Rotary Tool Max Drilling Diameter | 5 mm dia. |
| Back Rotary Tool Max Tapping Diameter | M4 (cutting tap) |
| Back Rotary Tool Spindle Rotation | max. 7,500 rpm (rated speed:6,000 rpm) |
| Tool Capacity | 45 |
| Number of Mountable Tools Turning Tools on The Gang Tool Pos | 6 |
| Number of Mountable Tools Rotary Tools on The Gang Tool Post | 25 |
| Number of Mountable Tools Front Drilling Tools | 6 |
| Number of Mountable Tools Back Drilling Tools | 8 |
| Tool Size Turning Tools | 12 mm Sq. (13 mm Sq., 16 mm Sq.) |
| Tool Size Sleeve | 25 mm dia.(GDS107, 210) 19.05 mm dia. |
| Chuck Bushing Front Spindle Collet Chuck | FC034-M, FC071-M(φ 25 mm [1”]) |
| Chuck Bushing Back Spindle Collet Chuck | FC034-M-K, FC071-M-K(φ 25 mm [1”]) |
| Chuck Bushing Rotary Tool Collet Chuck | ER11, ER16 |
| Chuck Bushing Chuck for Drill Sleeve | ER11, ER16 |
| Chuck Bushing Guide Bushing | WFG206-M, DFG206-M, FG521-M(φ25 mm [1"]) |
| Rapid Feed Rate X1 Y1 Z1 X2 Z2 Axis | 32 m/min |
| Rapid Feed Rate Y2 Axis | 8 m/min |
| Motor for Front Spindle Drive | 2.2/3.7/5.5 kW (continuous/15 minute/10%ED ratings) |
| Motor for Back Spindle Drive | 1.5/2.2/3.7 kW (continuous/40%ED/10%ED ratings) |
| Motor for Driving Rotary Tools on The Gang Tool Post | 1.0 kW(2.2 kW with S3 high-power motor specifications) |
| Motor for Front Rotary Tool Drive | 0.75 kW |
| Motor for Back Rotary Tool Drive | 0.75 kW |
| For Coolant | 0.4 kW |
| Rated Power Consumption | 8.3 kVA |
| Load Operation Average Power Consumption | 4.5 kVA |
| Total Load Current | 37 A(41 A with S3 high-power motor specifications) |
| Main Breaker Capacity | 60 A |
| Power Supply Voltage | AC 200V ± 10% |
| Pneumatic Device Required Pressure | 0.5 MPa |
| Pneumatic Device Required Flow Rate | 52/ 55/ 177 L/min (Power ON/Normal/ With air blow) |
| Floor Space Required | W2,222 × D1,265 × H1,835 mm |
| Center Height | 1,050 mm |
| Machine Weight | 2,680 kg |
Specifications sourced from cmj.citizen.co.jp — verified 2026-10-03
Strengths & Limitations
Strengths
- Holds 45 tools in one setup, against 38 on the Cincom L20-VIII
- Back rotary tools drill 5 mm and tap M4 at up to 7,500 rpm, positioned by a Y2 axis
- 25 rotary tool positions on the gang tool post plus 6 front and 8 back drilling tools
- Optional S3 high-power gang drive: 9,000 rpm and 2.2 kW
- Guide-bush and guide-bushless operation, 200 mm or 50 mm per chucking
Limitations
- The Y2 axis rapids at 8 m/min, a quarter of the 32 m/min of the main axes
- Back rotary tools are limited to 5 mm drilling and M4 tapping on a 0.75 kW motor
- At 2,680 kg it is heavier than the 2,630 kg Cincom L20-VIII
- Guide-bushless work is limited to 50 mm per chucking
Best For
Frequently Asked Questions
01
A Y2 axis rapiding at 8 m/min, back rotary tools that drill 5 mm and tap M4 at up to 7,500 rpm, 6 front drilling tools instead of 3 and 8 back drilling tools instead of 4. The total rises from 38 tools on the Cincom L20-VIII to 45, and the weight from its 2,630 kg to 2,680 kg.
02
The Cincom L20-XII column shows the same back rotary tools, Y2 axis and drilling tool counts, but 21 rotary tools on the gang tool post and 41 tools in total. The L20-X keeps 25 gang rotary positions and holds 45 tools. Both weigh 2,680 kg.
03
Gang tool post rotary tools run at up to 6,000 rpm (rated 4,500 rpm) on a 1.0 kW motor, or 9,000 rpm on 2.2 kW with the S3 high-power specification. Back rotary tools run at up to 7,500 rpm (rated 6,000 rpm) on a 0.75 kW motor.
04
20 mm bar as standard, 25 mm (1 in) as an option. With the guide bush the stroke is 200 mm per chucking, or 188 mm in the 25 mm specification; without it, 50 mm per chucking. Parts up to 130 mm long can be ejected, and up to 40 mm of the part can protrude from the back spindle.
05
AC 200V ±10% with a 60 A main breaker. Rated power consumption is 8.3 kVA and the average under load is 4.5 kVA. Total load current is 37 A, or 41 A with the S3 high-power motor. Air is required at 0.5 MPa.
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