Machine Comparison
INDEX C100 vs Star Micronics eCA-S20
INDEX-Traub vs Star Micronics · Swiss-Type Lathes
Summary
The INDEX C100 and the Star Micronics eCA-S20 are both listed here as Swiss-type lathes for turned parts made from bar. The makers publish no figures in a form that lines up for this pair, so there is no spec table to compare row by row, and what follows rests on what each machine is built to do.
The INDEX C100 is aimed at complex turned parts, with three turrets cutting in parallel, second-side work on a counter spindle and live tools for small milled features. The Star Micronics eCA-S20 is aimed at short parts that do not need guide bush support, where less bar waste lowers material cost, and at shops moving over from fixed-headstock lathes.
Specifications Comparison
| Specification | INDEX C100 | Star Micronics eCA-S20 |
|---|
Advantages
INDEX C100
- Three turrets that cut in parallel on high-volume parts
- Counter spindle for second-side work on complex parts
- Live tools for small milled features on turned parts
Star Micronics eCA-S20
- Suited to short parts that do not need guide bush support
- Less bar waste, which counts most on costly titanium and cobalt-chrome bar
- A simpler step for shops moving from fixed-headstock lathes
Verdict
With no comparable published figures for this pair, the choice comes down to the part. Choose the INDEX C100 for complex, high-volume bar parts that keep three turrets cutting at once and need second-side work on the counter spindle. Choose the Star Micronics eCA-S20 for short turned parts in expensive bar, where working without a guide bush cuts material waste and simplifies setup. Ask each maker for bar diameter, spindle and tooling figures before going further.