Citizen Cincom L20-XII ATC
Key Specifications
Rapid Traverse
max bar capacity
max machining diameter
max machining length
main spindle speed
main spindle power
Overview
The Citizen Cincom L20-XII ATC is the automatic tool changer variant of the L20-XII, adding ATC capability to the 12-axis L20 platform. The ATC expands effective tool capacity beyond the standard 41 positions by enabling automatic swapping of tools during the machining cycle.
Main spindle at 10,000 RPM with 2.2/3.7/5.5 kW. Back spindle at 10,000 RPM with 1.5/2.2/3.7 kW. 41 base tool positions plus ATC magazine. 12-axis simultaneous with LFV standard on both spindles. Rapid traverse 32 m/min.
The L20-XII ATC is the ultimate L20 configuration for shops running complex parts that require more unique tools than standard L20 capacity. High-mix medical and aerospace production are primary applications.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 20 mm (0.787 in), 25 mm (1.0 in) option |
| Max Machining Diameter | dia. 20 mm, dia. 25 mm [1”] option |
| Max Machining Length | Max. 50 mm per chucking |
| Main Spindle Speed | 10,000 RPM |
| Main Spindle Power | 2.2 / 3.7 / 5.5 kW (3 / 5 / 7.4 HP) |
| Back Spindle Speed | 10,000 RPM |
| Back Spindle Power | 1.5 / 2.2 / 3.7 kW (2 / 3 / 5 HP) |
| Spindle Bore | 26.4 mm (1.04 in) |
| Number Of Axes | 12-axis simultaneous |
| Number Of Tools | 41+ (with ATC magazine) |
| Automatic Tool Changer | Yes |
| Rotary Tool Speed | 6,000 RPM (rated 4,500 RPM) |
| 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 |
| Power Consumption | 8.3 kVA rated |
| CNC Control | Mitsubishi Meldas (Citizen software) |
| Item | VIII |
| 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 |
| Rapid Feed Rate | X1, Y1, Z1, X2, Z2: 32 m/minY2 axis: 8 m/min (X only) |
| 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 |
Specifications sourced from citizenmachinery.co.uk — verified 2026-03-28
Strengths & Limitations
Strengths
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Limitations
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Best For
Frequently Asked Questions
01
New L20-XII ATC runs USD 280,000-420,000.
02
41 standard positions plus ATC magazine for extended capacity.
03
Same 12-axis LFV platform plus ATC for extended tool capacity.
04
Each tool change adds seconds, but running without manual intervention often outweighs exchange time in high-mix environments.
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