Citizen Cincom M16-VIII
Key Specifications
Max Spindle
max bar capacity
max machining diameter
max machining length
main spindle speed
main spindle power
Overview
The Citizen Cincom M16-VIII is the top-specification variant of Citizen’s 16mm M-series Swiss-type automatic lathe, adding a programmable B-axis with -45 to +90 degree stroke to the comprehensive triple tool post architecture. The M16-VIII pushes into compound-angle territory—enabling angular drilling, off-axis milling, and B-axis contouring for part geometries unreachable by conventional Swiss configurations.
The M16-VIII shares its core platform with the M16-V: 12,000 RPM on both spindles, 2.2/3.7 kW main power, 0.75/1.5 kW back power, and 36+ tool positions across gang, turret, and back systems. The B-axis rotates the cutting tool through -45 to +90 degrees for compound-angle holes, angular flats, and contoured features.
Rated power consumption is 7.9 kVA with 5.4 kVA average. Rapid traverse hits 32 m/min on primary axes, 16 m/min on X2, 8 m/min on Y2. All tool posts feature 8,000 RPM rotary tools.
LFV chip-breaking comes standard, positioning the machine for demanding medical, dental, and aerospace applications. At 2,950 kg with 1,150mm center height, solid rigidity for precision angular machining at 16mm.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 16 mm (0.630 in) |
| Max Machining Diameter | 16 mm (0.630 in) |
| Max Machining Length | 200 mm (7.87 in) |
| Main Spindle Speed | 12,000 RPM |
| Main Spindle Power | 2.2 / 3.7 kW (3 / 5 HP) |
| Back Spindle Speed | 12,000 RPM |
| Back Spindle Power | 0.75 / 1.5 kW (1 / 2 HP) |
| Spindle Bore | 20 mm (0.787 in) |
| Number Of Axes | 9-axis + B-axis (-45 to +90 deg) |
| Number Of Tools | 36+ |
| Tool Size | Turning tool |
| Rotary Tool Speed | 8,000 RPM (all tool posts) |
| Max Drilling Diameter Front | 10 mm (0.394 in) |
| Max Drilling Diameter Back | 8 mm (0.394 in) |
| Max Tapping Front | M8 |
| Max Tapping Back | M6 |
| Rapid Feed Rate | X1 axis |
| Guide Bushing | Yes / Guide-bushless option |
| Lfv Chip Breaking | Yes (standard) |
| Machine Weight | 2,950kg |
| Center Height | 5.4kVA |
| CNC Control | Mitsubishi Meldas (Citizen software) |
| B Axis Stroke | -45 to +90 degrees |
| Rated Power Consumption | 7.9 kVA |
| Average Power Consumption | 5.4 kVA |
| Rapid Traverse Primary | 32 m/min |
| Rapid Traverse X2 | 16 m/min |
| Rapid Traverse Y2 | 8 m/min |
| Item | M16VIII |
| Maximum Machining Diameter | 16mm Dia. |
| Maximum Machining Length | 200mm/chuck |
| Maximum Drilling Diameter For Main Spindle | 10mm Dia. |
| Maximum Front Tapping Diameter | M8 |
| Main Spindle Through Hole Diameter | 20mm Dia. |
| Max Spindle Speed | 12,000min-1 |
| Maximum Chuck Diameter Of Back Spindle | 16mm Dia. |
| Maximum Protrusion Length Of The Back Spindle Workpiece | 125mm |
| Maximum Drilling Diameter In Back Machining Process | 8mm Dia. |
| Maximum Tapping Diameter In Back Machining Process | M6 |
| Gang Tool Rotary Tool Maximum Drilling Diameter | 5mm Dia. |
| Gang Tool Rotary Tool Maximum Tapping Diameter | M5 |
| Spindle Speed Of The Gang Rotary Tool | 8,000min-1 |
| Maximum Drilling Diameter For Turret Rotary Tool | 5mm Dia. |
| Maximum Tapping Diameter For Turret Rotary Tool | M5 |
| Maximum Drilling Diameter For Back Rotary Tool | 5mm Dia. |
| Maximum Tapping Diameter For Back Rotary Tool | M5 |
| Spindle Speed Of The Back Rotary Tool | 8,000min-1 |
| Number Of Tools To Be Mounted | 36+α |
| Sleeve | 19.05mm Dia. |
| X2 Axis | 16m/min |
| X3 Axis | 32m/min |
| Y1 Axis | 32m/min |
| Y2 Axis | 8m/min |
| Y3 Axis | 32m/min |
| Z1 Axis | 32m/min |
| Z2 Axis | 32m/min |
| Z3 Axis | 32m/min |
| Motors | For spindle drive |
| For Back Spindle Drive | 0.75/1.5kW |
| For Tool Spindle Drive | 0.69kW |
| For Back Tool Spindle Drive | 0.75kW |
| For Cutting Coolant Oil | 0.4kW |
| Load Operation Average Power | 1,150mm |
| Sliding Headstock Type | A20 |
| Bar Work | BNC42 |
| Turning Machine | BNA42CY |
| High Precision Turning Machines | BNA42SY |
| Multi Station Machining Cell | MC20 III |
| Tool Size Turning Tool | 10mm Sq. |
| Tool Size Sleeve | 19.05mm Dia. |
| Rapid Feed Rate X1 Axis | 32m/min |
| Rapid Feed Rate X2 Axis | 16m/min |
| Rapid Feed Rate X3 Axis | 32m/min |
| Rapid Feed Rate Y1 Axis | 32m/min |
| Rapid Feed Rate Y2 Axis | 8m/min |
| Rapid Feed Rate Y3 Axis | 32m/min |
| Rapid Feed Rate Z1 Axis | 32m/min |
| Rapid Feed Rate Z2 Axis | 32m/min |
| Rapid Feed Rate Z3 Axis | 32m/min |
| Motors For Spindle Drive | 2.2/3.7kW |
| Motors For Back Spindle Drive | 0.75/1.5kW |
| Motors For Tool Spindle Drive | 0.69kW |
| Motors For Back Tool Spindle Drive | 0.75kW |
| Motors For Cutting Coolant Oil | 0.4kW |
| Inquiries | Feel free to get in touch with us by phone or online if you have any questions or need advice about any of our products or services. |
Specifications sourced from cmj.citizen.co.jp — verified 2026-03-28
Strengths & Limitations
Strengths
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Limitations
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Best For
Frequently Asked Questions
01
Typically $260,000-$340,000. B-axis premium is justified by eliminating secondary operations.
02
Rotates the tool through -45 to +90 degrees for compound-angle holes, angular flats, and contoured surfaces.
03
Both have B-axis. M16-VIII: 16mm bar at 12,000 RPM. M32-VIII: 32mm bar at 8,000 RPM with more power.
04
Only if parts require angular features. If 20-30% of mix includes compound angles, the M16-VIII eliminates secondary operations.
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