Star Micronics SR-32J

Est. $300,000 – $480,000 Specs verified 2026-10-03 · ellisontechnologies.com Updated 2026-10-03

Key Specifications

Max Spindle

8,000 rpm

Rapid Traverse

35 m/min (X1, X2, Y1, Z1, Z2)

Spindle Power

7.5 kW (continuous) / 11.0 kW (10min./25%ED)

Max Turn Length

310mm (12-13/64in)

number of axes

5 simultaneous (up to 9 with optional units)

sub spindle speed

8,000 rpm

How much does the Star Micronics SR-32J cost?

Estimated price range

Est.$300,000 – $480,000

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 SR-32J is a Swiss-type sliding-headstock lathe for Ø32 mm (1-1/4 in) bar, with a 320 mm (12-19/32 in) headstock stroke and an 8,000 rpm main spindle. An optional setup raises bar capacity to Ø34 mm (1-11/32 in). Control is a FANUC 32i-B, and the axis row reads 5 simultaneous, rising to 9 with optional units.

That axis row matters when comparing quotations. A machine quoted at the base count and one quoted with the optional units differ in what they can do to the back end of a part, so ask which units are fitted and how many axes that leaves under control. The rapid traverse row gives 35 m/min on X1, X2, Y1, Z1 and Z2, which shows a Y axis on the first tool group and none named for the second.

Main spindle power is 7.5 kW continuous and 11.0 kW at the 10min./25%ED rating. The sub-spindle matches the main spindle's 8,000 rpm but carries 3.7 kW continuous and 5.5 kW (10min/40%ED), roughly half the continuous power. Heavy stock removal therefore belongs on the main side, with the pick-off spindle left for facing the cut-off end, cross work and lighter back turning. Six turning tools are listed, and maximum turning length is 310 mm (12-13/64 in), a little under the full stroke.

The machine weighs 4,100 kg and the footprint is listed as 2,690 × 1,345 × 1,780 mm. The table does not say whether a bar feeder is included in that figure, so settle the full line length before the floor is marked out.

Full Specifications

Parameter	Value
Number of Axes	5 simultaneous (up to 9 with optional units)
Sub Spindle Speed	8,000 rpm
CNC Control	FANUC 32i-B
Machine Weight	4,100 kg
Max Turning Diameter	ø32mm (1-1/4in)
Max Turning Length	310mm (12-13/64in)
Bar Capacity	Ø32 mm (1-1/4 in); optional: Ø34 mm (1-11/32 in)
Turret Stations	6 tools
Max Spindle Speed	8,000 rpm
Spindle Motor Power	7.5 kW (continuous) / 11.0 kW (10min./25%ED)
CNC Control	Fanuc 32i-B
Headstock Stroke	320 mm (12-19/32 in)
Sub Spindle Power	3.7 kW (continuous) / 5.5 kW (10min/40%ED)
Turning Tools	6 tools
Rapid Traverse Rate	35 m/min (X1, X2, Y1, Z1, Z2)
Floor Space Required	2,690 × 1,345 × 1,780 mm

Specifications sourced from ellisontechnologies.com (authorised dealer / distributor, not the manufacturer's own site) — verified 2026-10-03

Strengths & Limitations

Strengths

Ø32 mm (1-1/4 in) bar as standard, with Ø34 mm (1-11/32 in) available as an option
320 mm (12-19/32 in) headstock stroke and a 310 mm (12-13/64 in) maximum turning length for long shaft work in one chucking
Main and sub-spindle both reach 8,000 rpm, so neither limits the other's speed at part transfer
7.5 kW continuous and 11.0 kW (10min./25%ED) on the main spindle
FANUC 32i-B control with 5 simultaneous axes, extendable to 9 with optional units

Limitations

The 9-axis figure depends on optional units; the base axis row reads 5 simultaneous
The Ø34 mm (1-11/32 in) bar capacity is an option, not the standard Ø32 mm (1-1/4 in)
Sub-spindle power is 3.7 kW continuous and 5.5 kW (10min/40%ED), about half the main spindle's rating, which limits heavy back-end cuts
Six turning tools are listed, so a part needing more turning geometries than that calls for combination tooling or a compromise in the process

Best For

Shaft-type parts up to 310 mm (12-13/64 in) long from Ø32 mm (1-1/4 in) bar Parts finished on both ends using the 8,000 rpm sub-spindle Work that justifies the optional units taking the axis count to 9 Bar just over the standard size, using the Ø34 mm (1-11/32 in) option

Frequently Asked Questions

01 What bar size does the SR-32J take?

Standard bar capacity is Ø32 mm (1-1/4 in). The table lists Ø34 mm (1-11/32 in) as an option, so a machine has to be ordered or equipped for the larger size. Maximum turning diameter is listed as ø32mm (1-1/4in).

02 How many axes does the SR-32J have?

The table lists 5 simultaneous axes and up to 9 with optional units. The rapid traverse row names X1, X2, Y1, Z1 and Z2 at 35 m/min. Because the higher count depends on options, confirm the fitted units on any specific machine.

03 How long a part can the SR-32J turn?

Maximum turning length is 310 mm (12-13/64 in) and the headstock stroke is 320 mm (12-19/32 in). Against a Ø32 mm (1-1/4 in) bar that is close to ten diameters of length in a single stroke.

04 How powerful are the main and sub-spindles?

The main spindle is rated 7.5 kW continuous and 11.0 kW (10min./25%ED). The sub-spindle is rated 3.7 kW continuous and 5.5 kW (10min/40%ED). Both reach 8,000 rpm.

05 How much floor space and weight should be planned for?

The listed footprint is 2,690 × 1,345 × 1,780 mm and the machine weighs 4,100 kg. The table does not state whether a bar feeder is part of that footprint, so check the installation drawing for the full line.