Machines made by CITIZEN
A20 VII
A20-3F7 | Now with LFV Technology
Acclaimed for its excellent cost-to-performance ratio, this 5-axis machine offers high-speed 10,000 rpm performance with the versatility to run with or without a guide bushing. Machine bar stock up to ∅ 25 mm (option).
20mm (25mm opt) Bar Capacity
Integrated LFV Technology
10,000 RPM Main Spindle
Removable Guide Bushing
| ITEM | A20VII (A20-3F7) |
|---|---|
| Machining Capacities | |
| Max. Machining Diameter | ∅ 20 mm (∅ 25 option) |
| Max. Machining Length (GB) | 200 mm / 1 chucking (188 mm for ∅ 25) |
| Max. Machining Length (NGB) | 2.5 x Diameter |
| Main Spindle Speed | Max. 10,000 rpm |
| Back Spindle Speed | Max. 8,000 rpm |
| Spindle Through-hole Diameter | ∅ 26 mm |
| Tooling System | |
| Number of Tools to be Mounted | 21 |
| Gang Rotary Tool Speed | Max. 6,000 rpm (Rating 4,500 rpm) |
| Tool Size (Gang Post) | ▢ 1/2" |
| Sleeve Size | 1" |
| Collet Chuck (Main/Back) | TF25 (TF30 for ∅ 25) |
| Rotary/Drill Collets | ER11, ER16 |
| Guide Bushing Type | TD25NS (CD25 for ∅ 25) |
| Speeds & Motors | |
| Rapid Feed Rate (X1) | 18 m/min |
| Rapid Feed Rate (All other axes) | 32 m/min |
| Main Spindle Motor | 2.2 / 3.7 kW |
| Back Spindle Motor | 1.1 / 1.5 kW |
| Tool Spindle Motor | 0.75 kW |
| Physical Specs & Utilities | |
| Center Height | 1,050 mm |
| Rated Power Consumption | 7.1 kVA |
| Full-load Current / Breaker | 20.2 A / 30 A |
| Air Pressure & Flow | 0.5 MPa • 47 NL |
| Machine Weight | 4,851 lbs |
Standard Features
- Fanuc Series 32i Model B Control
- 8.4 inch color LCD
- Constant surface speed control
- Spindle synchronized function
- On-machine program check
Advanced Controls
- Low Frequency Vibration (LFV)
- High speed rigid tapping
- Network I/O & Tool Life Management
Tooling & Feed
- Gang Rotary Tool: Max 6,000 rpm
- Rapid Feed (X1): 18 m/min
- Rapid Feed (Others): 32 m/min
- Tool Size: ▢1/2" Gang / 1" Sleeve
Collets & Bushings
- Main/Back Collet: TF25 (TF30 opt)
- Rotary/Drill: ER11, ER16
- Guide Bushing: TD25NS
- Spindle Through-hole: ∅ 26 mm
Power & Air
- Main Spindle Motor: 2.2 / 3.7 kW
- Back Spindle Motor: 1.1 / 1.5 kW
- Center Height: 1,050 mm
- Air Pressure: 0.5 MPa • 47 NL
Included Standard
- Cut-off tool breakage detection
- Workpiece separator & Receiver box
- Rotary guide bushing device
- Centralized Lubrication Unit
Optional Upgrades
- Chip conveyor & Coolant flow detector
- Long workpiece unit
- Callback chute
Export Control 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.
View Terms & Conditions
L1 and L2 dimensions vary depending on bar feeder type