Star SR-32JII Type A/B

$280,000 - $450,000 Updated 2025-03-15

Key Specifications

Rapid Traverse

32 m/min

max bar capacity

32 mm (1.26 in)

max machining diameter

32 mm (1.26 in)

max machining length

320 mm (12.6 in)

main spindle speed

8,000 RPM

back spindle speed

8,000 RPM

Overview

The Star SR-32JII Type A and Type B are second-generation evolutions of Star Micronics' popular SR-32J Swiss-type CNC automatic lathe, offering two distinct configurations optimized for different machining requirements. The Type A emphasizes gang-type tooling for maximum rigidity and turning performance, while the Type B features a turret-based tool system for greater tooling flexibility and faster tool indexing on multi-feature parts. Both share the SR-32J platform's fundamental strengths: 32mm bar capacity, up to 10 axes, and Star's precision guide bushing technology.

The SR-32JII brings significant refinements over the first-generation SR-32J, including improved thermal stability for better dimensional consistency during long production runs, enhanced structural rigidity for improved surface finishes, and updated Motion Control System algorithms for faster cycle times. The main spindle reaches 8,000 RPM with a built-in motor, while the back spindle matches at 8,000 RPM for balanced front and back operations. Both Type A and Type B support Y-axis capability for off-center milling and drilling.

Type A's gang-type tooling provides superior rigidity for heavy turning operations, which is particularly valuable at the 32mm bar size where cutting forces are substantial. The direct-mounted tools minimize deflection and vibration, delivering better surface finishes and longer tool life on demanding cuts. Type B's turret system provides faster tool indexing and more tool stations, which benefits parts with many different operations where the speed of tool changes outweighs the rigidity advantage of gang tooling.

Star's hydraulic-free design carries through to the SR-32JII, with electric servos handling all clamping and guide bushing functions. The Fanuc 31i-B5 control provides reliable multi-axis coordination, and the updated II-generation control software offers improved processing speed and enhanced programming capabilities. The machine supports guide bushing and non-guide bushing operation across both Type A and Type B configurations.

Full Specifications

Parameter	Value
Max Bar Capacity	32 mm (1.26 in)
Max Machining Diameter	32 mm (1.26 in)
Max Machining Length	320 mm (12.6 in)
Main Spindle Speed	8,000 RPM
Back Spindle Speed	8,000 RPM
Live Tool Speed	8,000 RPM
Number Of Axes	Up to 10 (including Y1, Y2, C1, C2)
Tool Positions	Type A: 28 (gang) / Type B: 32 (turret)
Y Axis Stroke	±18 mm
Guide Bushing	Yes (guide bushing and NGB available)
CNC Control	Fanuc 31i-B5
Rapid Traverse Rate	32 m/min
Machine Weight	2,900 kg (6,393 lb)
Power Consumption	12 kVA

Specifications sourced from starcnc.com — verified 2026-03-28

Strengths & Limitations

Strengths

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Limitations

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Best For

Shops upgrading from first-generation SR-32J machines that want improved precision and the latest Star technology Medical device manufacturers producing complex orthopedic implants requiring maximum tooling density (Type B) or heavy turning (Type A) Aerospace manufacturers producing precision fittings and connectors in the 20-32mm range with tight tolerance requirements Contract manufacturers seeking the most capable 32mm Swiss platform for diverse customer parts Shops producing parts with significant turning content that benefit from gang tooling rigidity (Type A) High-mix shops producing complex multi-feature parts that benefit from maximum tool positions (Type B)

Frequently Asked Questions

01 What does a Star SR-32JII cost?

A new Star SR-32JII ranges from approximately $280,000 for a standard configuration to $450,000 for a fully equipped 10-axis model. Both Type A and Type B are priced similarly, with the choice driven by application needs rather than cost. Used first-generation SR-32J machines are available at lower price points.

02 Should I choose Type A or Type B?

Choose Type A if your parts are primarily turning-intensive with heavy cuts, where gang tooling rigidity delivers better surface finish and tool life. Choose Type B if your parts have many different operations requiring frequent tool changes, where the turret's faster indexing and more tool stations improve cycle time and flexibility.

03 What's improved in the JII over the original SR-32J?

The SR-32JII features improved thermal management for better dimensional stability, enhanced structural rigidity for improved surface finishes, updated MCS algorithms for optimized cycle times, and faster control processing. These refinements deliver measurable improvements in tolerance holding, surface finish, and overall productivity.

04 Can both Type A and Type B run NGB?

Yes. Both Type A and Type B configurations support non-guide bushing operation, allowing shops to switch between guide bushing mode for maximum precision on longer parts and NGB mode for material savings on shorter parts.

05 How does the SR-32JII compare to the SV-32?

The SV-32 is Star's high-performance 32mm platform with more power, higher rigidity, and maximum capability. The SR-32JII offers excellent capability at a lower price point. For the most demanding 32mm applications requiring maximum performance, the SV-32 is the better choice. For shops that need strong 32mm capability without the SV-series premium, the SR-32JII delivers excellent value.