Star Micronics SR-10J

Est. $80,000 - $130,000 Specs verified 2026-10-03 · ellisontechnologies.com Updated 2026-10-03

Image: starcnc.com, Star Micronics

Key Specifications

Max Spindle

10,000 rpm

Rapid Traverse

35 m/min (X, Y, Z, XB, ZB)

Spindle Power

2.2 kW(continuous)/3.7 kW(15min./60%ED)

max machining diameter

10 mm (25/64 in)

max headstock stroke standard

135 mm (5-5/16 in)

max headstock stroke rmgb

105 mm (4-9/64 in)

How much does the Star Micronics SR-10J cost?

Estimated price range

Est.$80,000 - $130,000

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 SR-10J is a Swiss-type lathe for bar up to 10 mm (25/64 in) with a standard headstock stroke of 135 mm (5-5/16 in) and main and sub spindles that both run to 10,000 rpm. It is a light machine. At 1,400 kg it weighs about half as much as the 2,750 kg SR-20J, and its footprint is 1,865 × 775 × 1,695 mm.

The duty rating of the main spindle deserves a close read. The motor is 2.2 kW continuous and 3.7 kW on a 15min./60%ED rating. The SR-20J lists the same two power figures on a 10min./25%ED rating, so the smaller machine can hold its higher output for a larger share of the time. On 10 mm bar, where cuts are light and cycles are short, that makes the upper figure closer to a working number. The sub spindle is rated 0.55 kW continuous and 1.1 kW at 15min./50%ED.

Tooling is kept small. There are 6 turning tools on 8 mm shanks, a 4-spindle sleeve holder with 4 tools to the front and 4 to the rear, and a 4-spindle back unit. Rapid traverse is 35 m/min on X, Y, Z, XB and ZB, and the control is a FANUC 32i-B.

With the RMGB arrangement the headstock stroke is listed at 105 mm (4-9/64 in) instead of 135 mm (5-5/16 in), so the guide bush choice shortens the longest feature that can be turned in one grip.

Full Specifications

Parameter	Value
Max Machining Diameter	10 mm (25/64 in)
Max Headstock Stroke Standard	135 mm (5-5/16 in)
Max Headstock Stroke Rmgb	105 mm (4-9/64 in)
Sub Spindle Speed	10,000 rpm
Sub Spindle Power	0.55 kW (continuous) / 1.1 kW (15min./50%ED)
Tool Stations	6 tools (8 mm shank)
Sleeve Holder	4-spindle (front 4 / rear 4 tools)
Back Unit	4-spindle
Rapid Feed Rate	35 m/min
CNC Control	FANUC 32i-B
Machine Weight	1,400 kg
Headstock Stroke	135m (5-5/16 in)
Max Spindle Speed	10,000 rpm
Spindle Motor Power	2.2 kW(continuous)/3.7 kW(15min./60%ED)
Turning Tools	6 tools (8 mm)
Bar Capacity	Ø10 mm(25/64 in)
Rapid Traverse Rate	35 m/min (X, Y, Z, XB, ZB)
Floor Space Required	1,865 × 775 × 1,695 mm

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

Strengths & Limitations

Strengths

10,000 rpm on both the main and the sub spindle
Main spindle short-time power of 3.7 kW is rated at 15min./60%ED, a longer duty than the 10min./25%ED listed for the SR-20J
135 mm (5-5/16 in) standard headstock stroke on a 10 mm (25/64 in) bar machine
4-spindle sleeve holder working front and rear, plus a 4-spindle back unit
Weighs 1,400 kg on a 1,865 × 775 × 1,695 mm footprint
35 m/min rapid traverse on X, Y, Z, XB and ZB

Limitations

Bar size ends at 10 mm (25/64 in), with no optional larger size in the table
Sub spindle power is 0.55 kW continuous, a quarter of the 2.2 kW main spindle
Turning tools are limited to 8 mm shanks
Headstock stroke falls to 105 mm (4-9/64 in) with the RMGB arrangement
No driven-tool speed or drilling capacity is listed

Best For

Small turned parts from bar up to 10 mm (25/64 in) High-speed work on small diameters at up to 10,000 rpm on both spindles Parts up to 135 mm (5-5/16 in) of turned length in one grip Floors where a 1,400 kg machine 775 mm deep is easier to place than a larger lathe

Frequently Asked Questions

01 What bar size does the Star SR-10J take?

Up to 10 mm (25/64 in), which is both the maximum machining diameter and the bar capacity. No optional larger size is listed. For 20 mm stock the SR-20J is the listed alternative, at ø20mm (25/32in) and 2,750 kg.

02 How long a part can the SR-10J turn?

The standard maximum headstock stroke is 135 mm (5-5/16 in). With the RMGB arrangement it is 105 mm (4-9/64 in). Parts with a longer turned section than the stroke need the bar re-gripped part-way, which costs time and can leave a witness mark.

03 How powerful are the spindles?

The main spindle is 2.2 kW continuous and 3.7 kW at 15min./60%ED, with a top speed of 10,000 rpm. The sub spindle also reaches 10,000 rpm and is rated 0.55 kW continuous and 1.1 kW at 15min./50%ED. Keep heavier cuts on the main spindle and use the sub spindle for back-end finishing.

04 What tooling does the SR-10J have?

The table lists 6 turning tools on 8 mm shanks, a 4-spindle sleeve holder with 4 front and 4 rear tools, and a 4-spindle back unit. It does not state driven-tool speeds or a drilling limit, so ask for those if your parts have cross holes or milled features.

05 How much space does the SR-10J need?

The machine measures 1,865 × 775 × 1,695 mm and weighs 1,400 kg. Those figures are for the lathe alone. Allow extra length for the bar feeder and access room for coolant and chip handling.