Star SV-20

Est. $280,000 - $450,000 Specs verified 2026-10-03 · starcnc.com Updated 2026-10-03

Image: starcnc.com, Star Micronics

Key Specifications

Tool Capacity

4 tools (16mm) : OP 5 tools (12mm) : OP

max bar capacity

20 mm (0.787 in)

max machining diameter

20 mm (0.787 in)

number of axes

Up to 10 (including Y1, Y2, B-axis, C1, C2)

tool positions

32 (including live tools)

power consumption

12 kVA

How much does the Star SV-20 cost?

Estimated price range

Est.$280,000 - $450,000

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 SV-20 is a 20 mm (0.787 in) Swiss-type lathe with 32 tool positions, live tools included, and up to 10 axes. Star's axis row names Y1, Y2, a B-axis, C1 and C2, and power consumption is listed at 12 kVA.

Thirty-two positions on a 20 mm machine is the figure that stands out. It lets a shop leave the tooling for a family of parts mounted and change over by program instead of rebuilding the tool layout, and it gives room for duplicate tools on long runs. The table counts live and fixed tools together, so ask how many of the 32 are driven.

The SV-20R is the sibling to compare. The SV-20R table shows an 8-station turret, a 10,000 rpm spindle rated 3.7 kW continuous and a 205mm (8in) maximum turning length, with a weight of 4,150 kg. The SV-20 table has none of those rows, so spindle speed, stroke and weight for this model have to be confirmed separately and should not be carried across from the other machine.

Full Specifications

Parameter	Value
Max Bar Capacity	20 mm (0.787 in)
Max Machining Diameter	20 mm (0.787 in)
Number of Axes	Up to 10 (including Y1, Y2, B-axis, C1, C2)
Tool Positions	32 (including live tools)
Power Consumption	12 kVA
Max Turning Diameter	ø20mm (25/32in)
Tool Capacity	4 tools (16mm) : OP 5 tools (12mm) : OP

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

Strengths & Limitations

Strengths

32 tool positions, including live tools, on a 20 mm (0.787 in) machine
Up to 10 axes with Y1, Y2, B-axis, C1 and C2 named
Power consumption stated at 12 kVA for supply planning

Limitations

Table gives no spindle speed, spindle power, stroke or weight for this model
The split between live and fixed positions within the 32 is not stated

Best For

Complex small parts up to 20 mm (0.787 in) diameter Part families that share one standing tool setup across 32 positions Angled drilling and milling using the B-axis

Frequently Asked Questions

01 How many tools does the SV-20 hold?

Star lists 32 tool positions, including live tools. The table does not say how many of those are driven, or how they are divided between front and back working, so ask for the tooling layout drawing.

02 What axes does the SV-20 have?

Up to 10 axes, including Y1, Y2, a B-axis, C1 and C2. The B-axis allows a driven tool to work at an angle to the bar; the paired Y and C axes cover off-centre work at both spindles.

03 What is the difference between the SV-20 and the SV-20R?

Both are 20 mm class machines: the SV-20R lists a ø20mm (25/32in) maximum turning diameter, an 8-station turret and a 10,000 rpm spindle, and weighs 4,150 kg. The SV-20 table lists 32 tool positions and up to 10 axes including a B-axis but no spindle or weight rows, so a like-for-like comparison needs the missing figures from the seller.