Star Micronics eCA-S20

Est. $150,000 - $250,000 Specs verified 2026-10-03 · starcnc.com Updated 2026-10-03

Image: starcnc.com, Star Micronics

Key Specifications

max machining diameter

20 mm (25/32 in)

number of axes

rear tools

2 tools (turning + stationary end working + power-driven)

max turning diameter

Ø20mm (25/32in)

How much does the Star Micronics eCA-S20 cost?

Estimated price range

Est.$150,000 - $250,000

Our best estimate for a swiss-type lathe in this class — not a quote from Star Micronics. Configuration moves it a long way.

Overview

The Star Micronics eCA-S20 is a Swiss-type lathe for bar up to 20 mm (25/32 in) in diameter with 10 axes. Star's table for it is brief: the machining diameter, the axis count, and a rear tool position carrying 2 tools that between them cover turning, stationary end working and power-driven work.

Ten axes is a high count for a 20 mm machine, and it is the figure to ask about. More axes means more independent motion for overlapping front and back operations, but the table does not say how the 10 are divided between slides and spindles. Spindle speeds, motor power, stroke and front tool counts are also missing and need to come from Star before a part is planned on this machine.

Within the same family the eCA-S32T is the larger machine at Ø32mm (1-1/4in), built around a first and a second turret of 10 stations each. For comparison at the same bar size, the SB-20RII also turns ø20mm (25/32in) and lists ø25.4mm (1in) as an option, which the eCA-S20 table does not.

Full Specifications

Parameter	Value
Max Machining Diameter	20 mm (25/32 in)
Number of Axes	10
Rear Tools	2 tools (turning + stationary end working + power-driven)
Max Turning Diameter	Ø20mm (25/32in)

Specifications sourced from starcnc.com — verified 2026-10-03

Strengths & Limitations

Strengths

10 axes on a machine for 20 mm (25/32 in) bar
Rear tooling of 2 tools covering turning, stationary end working and power-driven work

Limitations

Maximum machining diameter is 20 mm (25/32 in); the eCA-S32T goes to Ø32mm (1-1/4in)
Rear tooling is listed as 2 tools only
Star's table gives no spindle speed, power or stroke for this model

Best For

Small-diameter bar work up to 20 mm (25/32 in) Parts with overlapping front and back operations across 10 axes Back-end work that fits within 2 rear tools, including power-driven tooling

Frequently Asked Questions

01 What bar diameter does the eCA-S20 handle?

The maximum machining diameter is 20 mm (25/32 in). Star's table lists no larger option for this model. The eCA-S32T is the step up, with a maximum turning diameter of Ø32mm (1-1/4in).

02 How does the eCA-S20 differ from the eCA-S32T?

As far as the tables go, in size and in tooling layout. The eCA-S20 has a maximum machining diameter of 20 mm (25/32 in), 10 axes and 2 rear tools. The eCA-S32T is listed at Ø32mm (1-1/4in) with 10 stations on its first turret and 10 stations on its second turret. Star's table for the eCA-S20 lists no turret.

03 What rear tooling does the eCA-S20 have?

The table lists 2 tools at the rear, described as turning, stationary end working and power-driven. That is enough for a back-turning cut and a drilled or milled feature on the cut-off side, and a part needing more back-end tools than that should be checked against Star's full tooling layout.