Machine Comparison
Citizen Cincom A20 vs INDEX C100
Citizen Machinery vs INDEX-Traub · Swiss-Type Lathes
Summary
The Citizen Cincom A20 and the INDEX C100 are both listed as Swiss-type lathes, but they are built for different work. The A20 is an entry-level sliding-headstock machine for small pins and contacts. The INDEX C100 is a heavier production machine with three turrets cutting at once, aimed at complex turned parts at volume.
The C100 has 25 / 29 kW of spindle power against 2.2 / 3.7 kW, a 400 mm turning length against 200 mm per chucking, and 8,000 rpm live tools against 6,000 rpm. The A20 spins faster, 10,000 rpm against 7,000 rpm on the main spindle and 8,000 rpm against 7,000 rpm on the sub-spindle, rapids at 32 m/min against 30 m/min, and weighs 2,200 kg against 5,700 kg (12,566 lb).
Specifications Comparison
| Specification | Citizen Cincom A20 | INDEX C100 |
|---|---|---|
| Max Turning Length | 200 mm / 1 chucking (188 mm for 25) | 400 mm ▲ |
| Max Spindle Speed | Max. 10,000 rpm ▲ | 7,000 rpm |
| Spindle Power | 2.2 / 3.7 kW | 25 / 29 kW (100%/25% duty) ▲ |
| Sub-Spindle Speed | Max. 8,000 rpm ▲ | 7,000 rpm |
| Live Tool Speed | Max. 6,000 rpm (Rating 4,500 rpm) | 8,000 rpm ▲ |
| Tool Capacity | 21 | VDI20: 14; VDI25: 10 |
| Rapid Traverse | 32 m/min ▲ | 30 m/min |
| Control | Citizen CNC | Siemens S840D sl / FANUC Version 31i-B |
| Machine Weight | 4,851 lb (2,200 kg) | 5,700 kg (12,566 lb) |
Advantages
Citizen Cincom A20
- 10,000 rpm main spindle against 7,000 rpm
- 8,000 rpm sub-spindle against 7,000 rpm
- 32 m/min rapids against 30 m/min
- Lighter machine at 4,851 lb (2,200 kg) against 5,700 kg (12,566 lb)
INDEX C100
- 25 / 29 kW spindle power against 2.2 / 3.7 kW
- 400 mm turning length against 200 mm per chucking
- 8,000 rpm live tools against 6,000 rpm
- Three turrets for simultaneous cutting, with Siemens S840D sl or FANUC 31i-B control
Verdict
These are machines for different jobs. Choose the Citizen Cincom A20 for small, simpler pins, contacts and connector parts where 10,000 rpm and a compact machine suit the work, or as an entry or second Swiss machine. Choose the INDEX C100 for complex automotive, medical and aerospace parts at volume, where three turrets, 25 / 29 kW of spindle power and a 400 mm turning length cut cycle time on multi-operation parts.