Citizen Cincom L20-XII ATC
This model was not found in Citizen Machinery's current lineup when we checked on 2026-10-02 (lineup page). It may be a superseded or older model; the specifications below are as we last recorded them.
Image: citizenmachinery.co.uk, Citizen Machinery
Key Specifications
Max Spindle
Tool Capacity
Rapid Traverse
Spindle Power
max machining diameter
max machining length
How much does the Citizen Cincom L20-XII ATC 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-XII ATC is an L20 sliding-headstock lathe fitted with an automatic tool changer, listed with 20 mm bar capacity (25 mm, 1 in, optional), 10,000 rpm main and back spindles and 46 tools with the ATC. It is not in Citizen's current lineup, so a buyer today is assessing a machine that has already been in use.
The listed figures put guide-bush machining at 200 mm per chucking (188 mm with 25 mm bar) and guide-bushless machining at 50 mm. The spindle bore is 26.4 mm (1.04 in). Gang rotary tools run at up to 6,000 rpm (rated 4,500 rpm), or 9,000 rpm with the S3 motor, and drill 8 mm and tap M6. LFV chip breaking is listed, for both spindles at the same time, along with a Mitsubishi Meldas control running Citizen software.
Check the tooling of a given machine before relying on these numbers. The rows for tools without the ATC (38 in total, 25 gang rotary tools, 3 front drilling tools) match the current Cincom L20-VIII column rather than the 41, 21 and 6 of the Cincom L20-XII. The listed weight is 2,680 kg (5,908 lb) and rated power consumption 8.3 kVA.
Full Specifications
| Parameter | Value |
|---|---|
| Max Machining Diameter | 20 mm (25 / 1" option) |
| Max Machining Length | 200 mm (GB) / 50 mm (GBL) |
| Spindle Bore | 26.4 mm (1.04 in) |
| Number of Axes | 12-axis simultaneous |
| Automatic Tool Changer | Yes |
| Rapid Traverse Rate | 32 m/min |
| Lfv Chip Breaking | Yes (simultaneous dual-spindle) |
| Guide Bushing | WFG206-M, DFG206-M, FG521-M (dia. 25 mm [1”]) |
| Machine Weight | 2,680 kg (5,908 lb) |
| Power Consumption | 8.3 kVA |
| CNC Control | Mitsubishi Meldas (Citizen software) |
| Model | L20E – 3M8 |
| Max Machining Length 20 Mm Dia Spec | 200 mm per chucking |
| Max Machining Length 25 Mm Dia Spec | 188 mm per chucking |
| Max Front Drilling Diameter | dia. 10 mm |
| Max Front Tapping Diameter | M8 (cutting tap) |
| Spindle Through Hole Diameter | dia. 26.4 mm |
| Spindle Rotation | Max. 10,000 min⁻¹ |
| Max Chucking Diameter of Back Spindle | dia. 20 mm, dia. 25 mm [1”] option |
| Max Taking Out Length of The Workpiece | 130 mm |
| Max Workpiece Protrusion Length of Back Spindle | 40 mm |
| Gang Tool Post Rotary Tool Max Drilling Diameter | dia. 8 mm |
| Gang Tool Post Rotary Tool Max Tapping Diameter | M6 (cutting tap) |
| Gang Tool Post Rotary Tool Spindle Rotation | Max. 6,000 min⁻¹ (rated: 4,500 min⁻¹)S3 motor: Max. 9,000 min⁻¹ (rated: 9,000 min⁻¹) |
| Rotary Tools on Opposite Tool Post | Max. 6,000 min⁻¹ (rated: 4,500 min⁻¹) |
| Max Number of Mountable Tools | 38 |
| Turning Tools on Gang Tool Post | 6 |
| Rotary Tools on Gang Tool Post | 25 |
| Front Drilling Tool | 3 |
| Tool Size | sq. 12 mm (sq. 13 mm, sq. 16 mm) |
| Sleeve | dia. 25 mm (GDS107, 210), dia. 19.05 mm |
| Front Spindle Collet Chuck | FC034-M, FC071-M (ø25 mm [1”]) |
| Rotary Tool Collet Chuck | ER11, ER16 |
| Chuck for Drill Sleeve | ER11, ER16 |
| Motors Front Spindle Drive | 2.2 / 3.7 / 5.5 kW (continuous/15 min/10%ED) |
| Motors Back Spindle Drive | 1.5 / 2.2 / 3.7 kW (continuous/40%ED/10%ED) |
| Motor for Gang Rotary Tools | 1.0 kW (2.2 kW with S3 motor) |
| Motor for Front Rotary Tool Drive | 0.75 kW |
| Motor for Back Rotary Tool Drive | 0.75 kW |
| Coolant Motor | 0.4 kW |
| Rated Power Consumption | 8.3 kVA |
| Average Load Operation Power Consumption | 4.5 kVA |
| Total Load Current | 37 A (41 A with S3 motor) |
| Main Breaker Capacity | 60 A |
| Power Supply Voltage | AC 200V ± 10% |
| Pneumatic Device Required Pressure | 0.5 MPa |
| Pneumatic Device Flow Rate | 52 / 55 / 177 L / min (Power ON / Normal / With air blow) |
| Machine Dimensions | W 2,222 × D 1,625 × H 1,835 mm |
| Machine Height | 1,830 mm |
| Max Spindle Speed | Max. 10,000 rpm |
| Sub Spindle Speed | Max. 10,000 rpm |
| Tool Capacity | 46 (w/ ATC) |
| Live Tool Speed | Max. 9,000 rpm (S3 high-power) |
| Spindle Motor Power | 2.2 / 3.7 / 5.5 kW |
| Sub Spindle Power | 1.5 / 2.2 / 3.7 kW |
Specifications sourced from marucit.com — verified 2026-09-24
Strengths & Limitations
Strengths
- Automatic tool changer, with 46 tools listed when it is fitted
- LFV chip breaking listed for simultaneous dual-spindle work
- 20 mm bar, or 25 mm (1 in) with the option, and 10,000 rpm on both spindles
- Guide-bushless operation listed at 50 mm per chucking alongside 200 mm with the guide bush
Limitations
- Not in Citizen's current lineup, so the figures cannot be checked against a current product page
- The listed tooling counts match the type VIII column, not the type XII, so the layout of a given machine must be confirmed
- Gang rotary tools tap only to M6 and run to 6,000 rpm without the S3 motor
Best For
Frequently Asked Questions
01
It is not in Citizen's current lineup. The current third-generation L20 range runs from the type VIII to the type XIIB5. The figures quoted for the ATC machine are the listed ones and cannot be checked against a current Citizen product page.
02
The listing gives 46 tools with the ATC and 38 mountable tools on the machine itself: 6 turning tools and 25 rotary tools on the gang tool post and 3 front drilling tools. Those last counts match the current L20 type VIII column rather than the type XII, so count the stations on the actual machine.
03
20 mm bar as standard and 25 mm (1 in) as an option. With the guide bush the stroke is 200 mm per chucking, or 188 mm with 25 mm bar; guide-bushless it is 50 mm. Parts up to 130 mm long can be taken out, and the back spindle allows 40 mm of workpiece protrusion.
04
A Mitsubishi Meldas control with Citizen software is listed. Rated power consumption is 8.3 kVA, with 4.5 kVA average under load, on AC 200V ±10% with a 60 A main breaker. Air is needed at 0.5 MPa.
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