Citizen Cincom L20-IX
Image: cmj.citizen.co.jp, 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-IX 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-IX is a type of the third-generation L20 Swiss-type lathe built around 20 mm bar (25 mm optional), a 26.4 mm spindle bore and 10,000 rpm on both the main and the back spindle. Its tool count is 34: 6 turning tools and 21 rotary tools on the gang tool post, 3 front drilling tools and 4 back drilling tools.
Read side by side with Citizen's other L20 columns, the type IX is unusual. The Cincom L20-VIII, which the series page presents as the cost-effective entry type, lists 38 tools and 25 gang rotary positions, four more of each. Spindles, strokes, motors, weight and floor space are the same in both columns. Anyone choosing between the two should ask Citizen what the type IX gains for the four positions it gives up, because the published table does not say.
Spindle ratings are the same as the rest of the family. The front spindle motor gives 2.2 kW continuous, 3.7 kW for 15 minutes and 5.5 kW at 10%ED; the back spindle motor gives 1.5 kW continuous, 2.2 kW at 40%ED and 3.7 kW at 10%ED. Front drilling reaches 10 mm with M8 cutting taps, and the back spindle drills 8 mm and taps M8 with 40 mm of workpiece protrusion. The gang rotary tools drill 8 mm and tap M6 at a maximum of 6,000 rpm, or 9,000 rpm with the S3 high-power option and its 2.2 kW motor.
With the guide bush fitted the machine covers 200 mm per chucking (188 mm in the 25 mm specification); guide-bushless it covers 50 mm. Ejected parts can be up to 130 mm long. The X1, Y1, Z1, X2 and Z2 axes rapid at 32 m/min. The machine weighs 2,630 kg, draws 8.3 kVA rated and 4.5 kVA on average, and runs from AC 200V ±10% behind a 60 A breaker.
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) |
| Tool Capacity | 34 |
| Number of Mountable Tools Turning Tools on The Gang Tool Pos | 6 |
| Number of Mountable Tools Rotary Tools on The Gang Tool Post | 21 |
| Number of Mountable Tools Front Drilling Tools | 3 |
| Number of Mountable Tools Back Drilling Tools | 4 |
| 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 |
| 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 | 2,630 kg |
Specifications sourced from cmj.citizen.co.jp — verified 2026-10-03
Strengths & Limitations
Strengths
- 10,000 rpm on both main and back spindle, with a 26.4 mm spindle bore
- Bar capacity of 20 mm, or 25 mm (1 in) with the optional specification and FC071-M collets
- Runs with or without the guide bush: 200 mm or 50 mm per chucking
- Back spindle drills 8 mm and taps M8, the same thread size as the front spindle
- S3 high-power option takes the gang rotary tools to 9,000 rpm on a 2.2 kW motor
Limitations
- 34 tools in total, fewer than the 38 listed for the Cincom L20-VIII
- Only 21 rotary tool positions on the gang tool post
- No back rotary tool rows or Y2 axis in its column, so no milling on the back end
- Gang rotary tools tap only to M6 and run to 6,000 rpm unless the S3 option is fitted
Best For
Frequently Asked Questions
01
Only in tooling counts. The Cincom L20-VIII lists 38 tools with 25 rotary tools on the gang tool post; the L20-IX lists 34 tools with 21 rotary tools. Bar capacity, strokes, spindle speeds, motors, rapids and the 2,630 kg weight are the same in both columns.
02
The front spindle motor is rated 2.2/3.7/5.5 kW for continuous, 15 minute and 10%ED duty. The back spindle motor is rated 1.5/2.2/3.7 kW for continuous, 40%ED and 10%ED duty. Both spindles run to 10,000 rpm.
03
Yes. Guide-bushless, the maximum machining length is 50 mm per chucking. With the guide bush it is 200 mm per chucking at 20 mm bar, or 188 mm with the 25 mm specification. Guide bushings listed are WFG206-M, DFG206-M and FG521-M, the last for 25 mm (1 in) bar.
04
Drilling up to 8 mm and tapping up to M8 with cutting taps, using 4 back drilling tools, with up to 40 mm of the workpiece protruding from the back spindle chuck. The back spindle takes 20 mm, or 25 mm (1 in) as an option. No back rotary tools are listed for this type.
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