Star SB-16D

$100,000 - $175,000 Updated 2025-03-15

Key Specifications

Max Spindle

10,000 min-1

Tool Capacity

6 tools

Rapid Traverse

30 m/min

Spindle Power

2.2kw (continuous) / 3.7kw (15min.)

max bar capacity

16 mm (0.63 in)

max machining diameter

16 mm (0.63 in)

Overview

The Star SB-16D is a dual-spindle variant of Star Micronics' popular SB-16 Swiss-type CNC automatic lathe, adding a more capable back spindle configuration to the proven 16mm platform. The 'D' designation signifies the enhanced dual-spindle capability that enables more complex backworking operations compared to the standard SB-16, while still maintaining the SB series' value-oriented positioning. With up to 6 axes, including improved back spindle tooling, the SB-16D bridges the gap between the basic SB-16 and the more sophisticated SR series.

The SB-16D retains the SB series' core strengths: Star's precision guide bushing technology, a main spindle reaching 10,000 RPM, and gang-type tooling for fast, rigid turning operations. Where it differs from the standard SB-16 is in its enhanced back spindle subsystem, which provides additional tool stations and improved capability for secondary operations. This means parts that previously required a secondary operation after Swiss machining can now be completed in a single cycle on the SB-16D, improving throughput and reducing handling.

The Fanuc 31i-B control handles the multi-axis coordination between main and back spindle operations, and Star's programming environment makes it straightforward to set up synchronized transfers and simultaneous machining. The machine supports superimposed control for overlapping front and back operations, which reduces cycle times on parts with significant backworking content. Rapid traverse rates ensure minimal non-cutting time during production runs.

For shops that have outgrown the standard SB-16's backworking capability but don't need the full complexity and cost of an SR-series machine, the SB-16D hits a sweet spot. It's particularly well-suited for parts requiring precise backside features like ID bores, threads, cross-holes, and chamfers that demand more tool stations than the basic SB-16 provides. The machine maintains the SB series' compact footprint and low maintenance characteristics while delivering meaningfully expanded capability.

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	6
Tool Positions	20
Guide Bushing	Yes (standard)
CNC Control	Fanuc 31i-B
Rapid Traverse Rate	30 m/min
Machine Weight	1,700kg
Power Consumption	7.5 kVA
Max Turning Diameter	Ø16mm (5/8in)
Max Spindle Speed	10,000 min-1
Spindle Motor Power	2.2kw (continuous) / 3.7kw (15min.)
Rapid Traverse X	35m/min
Rapid Traverse Y	35m/min
Rapid Traverse Z	35m/min
Tool Capacity	6 tools
Turret Stations	Front 4 tools, Rear 2 tools (max. 4 tools)
Coolant Capacity	152ℓ
Floor Space	1,861 x 1,060 x 1,750mm
Electrical	3.0KVA
Max Chucking Diameter	Ø16mm (5/8in)

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

Strengths & Limitations

Strengths

[object Object]
[object Object]
[object Object]
[object Object]
[object Object]

Limitations

[object Object]
[object Object]
[object Object]
[object Object]

Best For

Shops that have outgrown the standard SB-16's backworking capability but don't need SR-series complexity High-volume production of precision turned parts requiring complete front and back machining in a single cycle Electronics and connector manufacturers producing pins, contacts, and housings with backside features Contract manufacturers seeking a versatile 16mm Swiss platform at a moderate price point Medical device shops producing simple implant components and surgical instrument parts under 16mm

Frequently Asked Questions

01 What does a Star SB-16D cost?

A new Star SB-16D typically costs between $100,000 and $175,000 depending on configuration and options. This represents a modest premium over the standard SB-16 for the enhanced backworking capability. Used SB-16D machines typically sell for $35,000-$85,000 depending on age, hours, and condition.

02 What is the difference between the SB-16 and SB-16D?

The SB-16D adds enhanced dual-spindle capability with additional back spindle tool stations and a 6th axis compared to the standard SB-16's 5 axes. This enables more complex backworking operations and more complete part machining in a single cycle. The standard SB-16 is better suited for simpler parts where basic backworking is sufficient.

03 Should I buy an SB-16D or step up to the SR-20J?

If your parts are primarily turned with moderate backworking needs and fit within 16mm bar diameter, the SB-16D offers excellent value. If you need Y-axis capability, extensive live tooling, or 20mm bar capacity, the SR-20J is the better choice despite its higher cost. Consider your part complexity roadmap when deciding.

04 Can the SB-16D run lights-out?

Yes. The SB-16D pairs with standard bar feeders for unattended production. The complete front-and-back machining capability means parts drop complete, reducing operator intervention. For free-machining materials, the SB-16D runs lights-out reliably with proper chip management setup.

05 What industries use the Star SB-16D?

The SB-16D is popular in electronics (connector pins, contacts), automotive (fuel injector components, sensor housings), medical (simple implant screws, bone pins), and general precision manufacturing. Any industry producing high volumes of small turned parts with backside features benefits from the SB-16D's capability.