Cincom A20VII

Exceptional Productivity & Cost Performance in a 5-axes, Φ20 Machine

The A20 has been acclaimed by customers as a highly rigid, low-cost machine. Now the latest A20 Type VII model boasts an additional axis, X2, on the back spindle making front/back simultaneous machining possible. This, in combination with the fast 32m/min rapid feed rate, has substantially cut cycle times.

With its Fanuc Series 32i-Model A System Control and five cutting axes (X, X2, Y, Z, Z2) the A20VII offers quick set-ups, high speed and low running costs. In addition, Citizen’s unique Streamline Control assures fast and smooth movements.

The standard tool layout includes 5 turning tools, 4 rotary tools, 4 tools for front drilling and 8 tools for back drilling.

Loaded with standard features, this easy to operate, 5-axes Φ20mm machine is a cost effective solution for exceptional productivity.

Installation of the Latest NC Unit
Streamline Control
- Direct C-axis Indexing
- Axis Feed Motion Overlap Function

High-Rigidity Technology

Heavy-Duty Bed for More Rigidity
Rigid Sleeve Holders
Rigid Construction Around the Spindle
Roller Guides Now Used on all Sliding Axes

Technology to Cope with Thermal Expansion

Left/Right Symmetrical Bed
Coolant Tank Restricts Heat Emissions

Download the Cincom A20 brochure:
A20.pdf (1.3 MB)

NC functions and accessories
Specifications
Floor layout

Cincom A20VII

Maintenance Performance

Air Sealing
Centralized Lubrication Unit Installed as Standard

Convenient Operation Assured

Control Panel Layout
PC Card Slot
Product Separator
Product Receiver Box
Large Capacity Coolant Tank
Coolant Nozzles
Chip Compartment
CS Quick Wedge
In-machine Lighting

Standard NC functions		Optional NC functions
NC unit dedicated to the A20 series 7.2-inch monochrome liquid crystal display (LCD) Pre-processing function Tool offset pairs: 49 Product counter indication (up to 8 digits) Automatic power-off function Canned cycle for thread cutting Spindle speed change detector (main & back) Main & back spindle C-axis function Main spindle indexing at 15° intervals On-machine program check function Constant surface speed control function (main & back spindle) Variable lead thread cutting Chamfering, corner R Direct input of drawing dimensions Spindle synchronized function Milling interpolation Multiple repetitive cycle for turning Canned cycle drilling Rigid tapping function Y-axis offset Tool life management I Tool life management II Program storage capacity 80 m User macros Subinch command Inch/Metric conversion B-code I/F Bar feeder interface		Program storage capacity 120 m Additional custom macro variables

		Main standard accessories
		Main spindle chucking device Back spindle chucking device Headstock cooling device 4-Gang rotary tool driving devices Coolant device (with level detector) Door lock function Workpiece separator Lubricating oil supply unit (with level detector) Machine relocation detector Pneumatic device for air sealing Cut-off tool breakage detection Lighting Rotary guide bushing device

		Optional accessories
		Knock-out jig for through-hole workpiece Workpiece conveyor Chip conveyor Workpiece basket on back spindle Coolant flow rate detector Patrol light 3-color signal tower Long workpiece unit

Machine specifications
Item	A20VII
Maximum machining diameter (D)	Φ 20 mm
Maximum machining length (L)	165 mm/1 chucking
Maximum front drilling diameter	Φ 10 mm
Maximum front tapping diameter (tap, die)	M8
Spindle through-hole diameter	Φ 31 mm
Main spindle speed	8,000 min^–1
Maximum drilling diameter of gang rotary tool	Φ 7mm
Maximum tapping diameter of gang rotary tool	M6
Spindle speed of gang rotary tool	max 6,000 min^–1 (rating: 4,500 min^–1)
Maximum chuck diameter of back spindle	Φ 20 mm
Maximum workpiece length for front side ejection	100 mm)
Maximum drilling diameter in back machining process	Φ 8 mm
Maximum tapping diameter in back machining process	M6
Back spindle speed	8,000 min^–1
Number of tools to be mounted	21
Turning tools on the gang tool post	5
Rotary tools for cross machining	4
Tools for front drilling	4
Tools for back drilling	8 (4+4)
Tool size
Tool (gang tool post)	▢1/2" (▢12mm); ▢5/8" (▢16mm)
Sleeve	Φ1" (25.4mm)
Chuck and bushings
Main spindle collet chuck	TF25
Back spindle collet chuck	TF25
Rotary tool collet chuck	ER16
Chuck for drill sleeves	ER16
Guide bushing	TD25NS
Rapid feed rate
X2, Y1, Z1, Z2 axes	32 m/min
X1 axis	18 m/min
Motors
Spindle drive	2.2/3.7 KW
Tool spindle drive	0.75 KW
Back spindle drive	1.1/1.5 KW
Coolant oil	0.25 KW
Lubricating oil	0.003 KW
Center height	1050mm
Input power capacity	6 KVA
Air pressure and air flow rate for pneumatic devices	0.5 MPa · 90 NL/min (Maximum 150 NL/min)
Weight	2550 Kg

A20 Floor layout

Maximum height: 1,750 mm (68.9") including mount

*A and L dimensions vary depending on bar feeder type

All specifications are subject to change without prior notice.

This product is subject to the export control laws of the United States and other countries. A license may be required prior to export, re-export or transfer of these products. Contact us for further information.

Terms and Conditions