Star SB-16

$80,000 - $150,000 Updated 2025-03-15

Key Specifications

Rapid Traverse

30 m/min

max bar capacity

16 mm (0.63 in)

max machining diameter

16 mm (0.63 in)

max machining length

150 mm (5.9 in)

main spindle speed

10,000 RPM

back spindle speed

8,000 RPM

Overview

The Star SB-16 is a compact, value-oriented Swiss-type CNC automatic lathe designed for efficient production of precision parts up to 16mm bar diameter. As part of Star Micronics' SB (Standard Basic) series, the SB-16 emphasizes simplicity and reliability over maximum axis count, making it an ideal entry point into Swiss-type machining or a dedicated workhorse for simpler turned components. With 5 axes, a main spindle reaching 10,000 RPM, and a straightforward gang-type tooling layout, the SB-16 delivers fast cycle times on parts that don't require extensive milling or backworking complexity.

The SB-16's design philosophy centers on maximizing uptime and minimizing setup time. The gang-type tool post provides quick tool changes and excellent rigidity for turning operations, while the compact footprint minimizes floor space requirements. The main spindle is powered by a built-in motor delivering smooth, vibration-free rotation across the speed range. Star's guide bushing technology ensures the concentricity and surface finish precision that Swiss-type machining is known for, while the Fanuc control provides familiar, reliable CNC operation that most operators can quickly adapt to.

For shops producing high volumes of turned components like connector pins, valve stems, watch components, and precision dowel pins, the SB-16 offers an excellent cost-per-part equation. The machine's simplicity translates to lower maintenance costs, faster troubleshooting, and reduced training time compared to more complex multi-axis Swiss platforms. Star's reputation for build quality and long-term reliability means the SB-16 delivers consistent precision over years of production.

The SB-16 includes a back spindle for secondary operations, enabling complete part machining in a single setup. While the backworking capability is more basic than Star's SR or SV series, it handles common operations like cutoff facing, chamfering, ID drilling, and light backturning effectively. This eliminates secondary operations for a wide range of parts and keeps work-in-process to a minimum.

Full Specifications

Parameter	Value
Max Bar Capacity	16 mm (0.63 in)
Max Machining Diameter	16 mm (0.63 in)
Max Machining Length	150 mm (5.9 in)
Main Spindle Speed	10,000 RPM
Back Spindle Speed	8,000 RPM
Number Of Axes	5
Tool Positions	16
Guide Bushing	Yes (standard)
CNC Control	Fanuc 31i-B
Rapid Traverse Rate	30 m/min
Machine Weight	1,500 kg (3,307 lb)
Power Consumption	7 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 producing high-volume turned parts like connector pins, valve stems, and precision dowels in the sub-16mm range Companies entering the Swiss-type market that want proven Japanese precision at an accessible price point Contract manufacturers needing dedicated Swiss capacity for simpler turned components without over-investing Watch and instrument makers producing small precision components that require Swiss-level concentricity Shops with limited floor space that need a compact Swiss-type lathe footprint

Frequently Asked Questions

01 What does a Star SB-16 cost?

A new Star SB-16 typically costs between $80,000 and $150,000 depending on configuration and options. This positions it as one of the most affordable Swiss-type lathes from a premium Japanese manufacturer. Used SB-16 machines typically sell for $25,000-$70,000 depending on age, condition, and included tooling.

02 What is the difference between the Star SB-16 and SR-20J?

The SR-20J is a significantly more capable machine with up to 9 axes, Y-axis capability, more live tooling, and 20mm bar capacity compared to the SB-16's 5 axes and 16mm capacity. The SB-16 is designed for simpler turned parts at lower cost, while the SR-20J handles complex multi-feature parts requiring milling, angular drilling, and extensive backworking.

03 Can the Star SB-16 run unattended?

Yes. The SB-16 pairs with standard bar feeders for continuous bar-fed production and includes part collection capability. For free-machining materials like brass, aluminum, and 12L14 steel, the SB-16 runs lights-out reliably. Chip management in gummy materials requires more attention to tooling and parameters.

04 What materials can the SB-16 machine?

The SB-16 handles brass, aluminum, carbon steel, stainless steel (303, 304, 316), engineering plastics, and copper alloys. It can also machine titanium at appropriate feeds and speeds. The machine excels with free-machining materials in high-volume production applications.

05 Is the Star SB-16 a good first Swiss lathe?

The SB-16 is an excellent first Swiss lathe for shops whose parts fall within its capability range. The simpler 5-axis design is easier to learn than jumping directly to a 7-9 axis platform. However, shops anticipating complex multi-feature parts should consider the SR series to avoid outgrowing the machine quickly.