Tsugami M08SJ-II
Key Specifications
max machining diameter chuck
max machining diameter bar
main spindle speed
back spindle speed
main spindle motor
tool stations
Overview
The Tsugami M08SJ-II is the 8-inch chuck version of Tsugami's sub-spindle turret lathe, designed for complete front and back turning of medium-sized parts in a single cycle. It pairs the precision and reliability Tsugami is known for with the productivity gains that come from eliminating flip operations and second setups.
Capacity reaches 280 mm (11.02 in) on chuck work and 65 mm (2.56 in) bar stock. Both the main and back spindles run 200-4,500 RPM, powered by a 7.5/11 kW (10/14.8 HP) main spindle motor and a built-in motor sub-spindle. The 12-station turret handles all tooling for both spindle operations, and the sub-spindle rapid traverse hits 30 m/min for fast part handoff.
At 5,270 kg and 2,470 x 1,850 x 1,750 mm, the M08SJ-II shares its footprint with the M06SJ-II but handles larger parts. The box-way construction and heavy casting provide the rigidity needed for consistent results during both main spindle and back-working operations. Rapid traverse on X and Z hits 24 and 27 m/min respectively.
The M08SJ-II excels in production environments where parts need features on both ends. Think automotive pivot pins, hydraulic piston rods, and precision bushings where the back end needs to be faced, chamfered, bored, or threaded after the front-end operations are complete. One machine, one cycle, one part.
Full Specifications
| Parameter | Value |
|---|---|
| Max Machining Diameter Chuck | 280 mm (11.02 in) |
| Max Machining Diameter Bar | 65 mm (2.56 in) |
| Main Spindle Speed | 200 - 4,500 RPM |
| Back Spindle Speed | 200 - 4,500 RPM |
| Main Spindle Motor | 7.5/11 kW (10/14.8 HP) |
| Tool Stations | 12-station turret |
| Sub Spindle | Yes (built-in motor) |
| Rapid Traverse X | 24 m/min (945 IPM) |
| Rapid Traverse Z | 27 m/min (1,063 IPM) |
| Rapid Traverse A | 30 m/min (1,181 IPM) |
| CNC Control | Fanuc |
| Machine Dimensions | 2,470 x 1,850 x 1,750 mm |
| Machine Weight | 5,270 kg (11,618 lb) |
Specifications sourced from tsugami.co.jp — verified 2026-03-28
Strengths & Limitations
Strengths
- Built-in motor sub-spindle enables complete front and back machining of 280 mm chuck parts
- 65 mm bar capacity with sub-spindle support makes it versatile for bar-fed production turning
- Both spindles at 4,500 RPM provide consistent speed for front and back operations
- 30 m/min sub-spindle rapid traverse keeps part handoff and positioning time minimal
- 12-station turret serves both spindles with enough positions for complex part cycles
- 5,270 kg machine weight ensures stability during all cutting operations
Limitations
- No live tooling means cross-drilling and milling still need a second machine
- 12-station turret must be shared between main and sub-spindle operations, limiting available tools per side
- Higher cost and complexity than simpler J-series machines for shops that rarely need back-working
- No Y-axis limits off-center work even if live tooling were added
Best For
Frequently Asked Questions
01
Same platform, bigger capacity. The M08SJ-II handles 280 mm chuck work and 65 mm bar (vs 260 mm and 51 mm on the M06SJ-II). Both share identical footprints, sub-spindle designs, and 12-station turrets. Choose the M08SJ-II when your parts regularly exceed the M06SJ-II's capacity limits.
02
The M08SJ-II is a turning-only platform. For sub-spindle plus live tooling, look at the Tsugami M08SD-II (without Y-axis) or M08SY-II (with Y-axis). These models add milling and drilling capability while retaining the sub-spindle for complete part machining.
03
The sub-spindle supports facing, chamfering, boring, threading, and turning on the back end of parts. It picks up the part from the main spindle after front-end operations are complete, and the same turret indexes to back-end tools. It's limited to turning operations since there's no live tooling.
04
Absolutely. Pair it with a bar feeder for automated production from 65 mm bar stock. The sub-spindle picks up the part before cutoff, and back-end operations complete automatically. This makes it well-suited for lights-out production of parts that need facing or chamfering on the bar-end side.
