Tsugami M08SB

$130,000 - $220,000 Updated 2026-03-16

Key Specifications

Accuracy

±0.001 mm (±0.00004 in)

max bar capacity

8 mm (0.315 in)

min bar capacity

0.5 mm (0.020 in)

max machining length

80 mm (3.15 in)

main spindle speed

Up to 20,000 RPM

main spindle power

1.5 kW (2 HP) continuous; 2.2 kW (3 HP) peak

Overview

The Tsugami M08SB is an ultra-micro CNC Swiss-type automatic lathe engineered for precision turning of parts from bar stock up to 8mm in diameter. Designed for the extreme small-diameter end of the Swiss turning spectrum, the M08SB targets watch component production, micro-medical device manufacturing, MEMS component machining, and electronics precision parts where the maximum part diameter is 8mm and the majority of work runs between 0.5mm and 5mm. The 'SB' designation indicates the back spindle configuration, confirming that the M08SB provides complete part machining capability including secondary operations on the cut-off face in a single setup.

The M08SB's spindle system is designed from the ground up for ultra-micro-turning precision. At diameters under 3mm, the relationship between spindle speed, guide bushing clearance, bar straightness, and cutting tool geometry determines part dimensional accuracy and surface finish more directly than any other factor. Tsugami's M08SB addresses this by specifying high spindle speeds (up to 20,000 RPM or more), ultra-precision guide bushing sizing for small-diameter stock, and machine structure thermal stability appropriate for production environments where continuous temperature control may not be available.

Tooling on the M08SB uses gang-mounted tool arrangements scaled for micro-turning work. Tool shanks, insert sizes, and driven tool units are configured for the cutting forces and clearance requirements of 1–8mm diameter workpieces. At these diameters, tool geometry, insert radius, and cutting edge preparation matter more than on larger machines—and the M08SB's tool mounting and positioning systems provide the sub-micron setup capability these scale requirements demand. Driven tools on front and back spindles enable cross-drilling and milling at 8mm scale for connector pins, guidewire components, and micro-fastener features.

For shops entering the micro-Swiss market or adding ultra-small-diameter capability to an existing Swiss department, the M08SB represents Tsugami's application of Japanese precision engineering to the most demanding small-scale Swiss work. Compared to the Tornos Sigma 7 and Citizen Cincom B12 in the micro-Swiss segment, the M08SB competes on Tsugami's value proposition—Japanese manufacturing precision at pricing below Swiss-brand alternatives—while providing a well-supported Fanuc control environment and REM Sales distribution backing in North America.

Full Specifications

Parameter	Value
Max Bar Capacity	8 mm (0.315 in)
Min Bar Capacity	0.5 mm (0.020 in)
Max Machining Length	80 mm (3.15 in)
Main Spindle Speed	Up to 20,000 RPM
Main Spindle Power	1.5 kW (2 HP) continuous; 2.2 kW (3 HP) peak
Back Spindle Speed	Up to 20,000 RPM
Back Spindle Power	0.75 kW (1 HP) continuous; 1.1 kW (1.5 HP) peak
Number Of Axes	Up to 9-axis simultaneous
Driven Tools	Yes, front and back
Driven Tool Speed	Up to 10,000 RPM
Guide Bushing	Yes, ultra-precision Swiss-type
Tool Positions	Up to 22
Positioning Accuracy	±0.001 mm (±0.00004 in)
CNC Control	Fanuc 32i-B (Tsugami customized)
Machine Dimensions	Approx. 1,350 x 1,050 x 1,600 mm
Machine Weight	Approx. 1,100 kg (2,425 lbs)

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

Strengths & Limitations

Strengths

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Limitations

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Best For

Watch and micro-technology component manufacturers producing pivot pins, balance staffs, pallet fork components, and other micro-precision turned parts in the 0.5–8mm range Micro-medical device manufacturers producing cochlear implant contacts, neurovascular wire components, micro-catheter tips, and precision guidewire assemblies Electronics precision parts producers manufacturing micro-connector pins, relay contact components, and miniature switch actuator parts in high volume MEMS and precision instrument manufacturers producing ultra-precision shafts, pivots, and bearing races for gyroscopes, sensors, and scientific instruments

Frequently Asked Questions

01 What does M08SB mean in Tsugami's naming convention?

In the Tsugami M08SB designation, 'M' refers to the micro Swiss-type lathe series, '08' indicates the 8mm bar capacity, and 'SB' designates the back spindle (secondary spindle) configuration for complete part machining. The SB suffix distinguishes this model from M-series configurations without back spindle capability.

02 How does the Tsugami M08SB compare to the Tornos Sigma 7?

Both the M08SB (8mm) and Sigma 7 (7mm) target the ultra-micro Swiss segment. The Sigma 7 is Swiss-made with Tornos' 150-year precision heritage and handles slightly smaller diameters. The M08SB offers a larger 8mm maximum capacity and Tsugami's value pricing versus Swiss-brand premium. Both use high-speed spindles and ultra-precision guide bushing systems. For the smallest diameters (under 3mm), the Sigma 7's Swiss engineering pedigree is the differentiator; for 3–8mm work at value pricing, the M08SB is competitive.

03 What is the smallest bar diameter the Tsugami M08SB can handle?

The M08SB is designed to handle bar stock down to approximately 0.5mm in diameter with appropriate collet and guide bushing selection. Machining at sub-1mm diameters requires specialist application engineering and very high-quality, precision-ground bar stock. Tsugami and REM Sales can advise on workholding selection and machine configuration for extreme micro-diameter work.

04 What driven tool speed does the M08SB provide?

The M08SB provides driven tool speeds up to 10,000 RPM, which is higher than on larger Swiss machines and is appropriate for the small-diameter cross-drilling, slot milling, and thread cutting operations common in micro-medical and electronics micro-part production. High driven tool speed is important at micro scale for the same surface speed reasons that affect main spindle requirements.

05 What is the price of a Tsugami M08SB?

New Tsugami M08SB machines are typically priced between $130,000 and $220,000 depending on configuration, axis count, and optional equipment. This pricing positions the M08SB below comparable Swiss-brand micro-Swiss machines. Used M08SB machines are infrequently available given the specialized nature of the machine and the typically high utilization rates in watch and micro-medical production environments.