Machine Comparison
INDEX C100 vs Star Micronics eCA-S20
INDEX-Traub vs Star Micronics · Swiss-Type Lathes
Summary
The INDEX C100 from INDEX-Traub and Star Micronics eCA-S20 from Star Micronics are direct competitors in the swiss-type lathes category. These machines are closely matched across most specifications, making the decision more about specific feature priorities, dealer support, and your existing shop ecosystem than raw spec advantages. Both machines are proven performers in production environments and represent solid investments for shops in the market for a swiss-type lathe.
Specifications Comparison
| Specification | INDEX C100 | Star Micronics eCA-S20 |
|---|---|---|
| Main Spindle Speed | 7,000 RPM | 10,000 RPM ▲ |
| Main Spindle Power | 22/29 kW (29.5/38.9 HP) ▲ | 2.2 kW continuous / 3.7 kW (30 min), built-in motor drive |
| Price Range | $300,000 - $450,000 | $150,000 - $250,000 ▲ |
Advantages
INDEX C100
- Superior main spindle power at 22/29 kW (29.5/38.9 HP) vs 2.2 kW continuous / 3.7 kW (30 min), built-in motor drive
- Backed by INDEX-Traub's dealer and service network for parts and support
- High-volume production shops running complex turned parts that benefit from simultaneous three-turret machining to minimize cycle times
Star Micronics eCA-S20
- Superior main spindle speed at 10,000 RPM vs 7,000 RPM
- More competitive pricing at $150,000 - $250,000 compared to $300,000 - $450,000
- Backed by Star Micronics's dealer and service network for parts and support
- Shops producing shorter-ratio parts (L/D under 3:1) where guide bush support is unnecessary and bar waste reduction provides direct material cost savings
Verdict
This is a close matchup. The INDEX C100 and Star Micronics eCA-S20 trade advantages across different specifications, making neither a clear winner on paper alone. Your decision should come down to practical factors: which dealer is closer, which control system your operators already know, what tooling ecosystem you're invested in, and which machine's specific strengths match your highest-volume work. Get quotes on both, run test cuts with your actual parts if possible, and factor in long-term service and support costs.