The Star Micronics SB-20RII is an industrial-grade CNC Lathes & Turning Centers powered by the Fanuc 0i-TF Plus. a top spindle speed of 10,000 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Star Micronics SB-20RII: 7-axis Swiss-type lathe, 20 mm (25/32 in) bar or optional 25.4 mm (1 in), 10,000 RPM spindles, Fanuc 0i-TF Plus control.
| Standardized Parameters & Ratings | |
|---|---|
| Manufacturer (Brand) | Star Micronics (Japan) |
| Machine Type | CNC Lathes & Turning Centers |
| CNC Controller System | Fanuc 0i-TF Plus |
| Number of Controlled Axes | 3-Axis Simultaneous / Positioning |
| Maximum Spindle Speed | 10,000 RPM |
| Spindle Motor Rating | 2.2 kW |
| Spindle Taper Interface | Standard |
| Approx. Machine Weight | 2,000 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Max Machining Diameter | 20 mm (25/32 in), optional 25.4 mm (1 in) |
| Max Headstock Stroke Guide Bush | 205 mm (8 in) |
| Max Headstock Stroke Non Guide Bush | Bar diameter x 2.5 (max 50 mm) |
| Main Spindle Speed | 10,000 RPM (8,000 RPM with 25.4mm option) |
| Main Spindle Power | 2.2 kW continuous / 3.7 kW (10 min, 25% ED) |
| Sub Spindle Speed | 10,000 RPM (8,000 RPM with 25.4mm option) |
| Sub Spindle Power | 1.5 kW continuous / 2.2 kW (15 min, 60% ED) |
| Number Of Axes | 7 |
| Turning Tools | 6 tools (12 mm) or 5 tools (16 mm) |
| Sub Spindle Stations | 4 standard, expandable to 6 |
| Rapid Feed Rate | 35 m/min |
| CNC Control | Fanuc 0i-TF Plus |
| Coolant Tank | 180 L |
| Machine Weight | Approx. 2,000kg |
| Dimensions | 2,070 x 1,095 x 1,775 mm |
| Max Turning Diameter | ø20mm (25/32in) OP: ø25.4mm (1in) |
| Turret Stations | 6 tools (ø12mm) / 5 tools (ø16mm) |
| Max Spindle Speed | Max. 10,000min-1 (OP: Max. 8,000min-1) |
| Spindle Motor Power | 2.2kW (cont)/3.7kW (10min/25%ED) |
| Rapid Traverse X | 35m/min (X1m Y1, Z1, X2, Z2) |
| Coolant Capacity | 180ℓ |
| Cnc Control | Fanuc 0i-TF Plus |
| Floor Space | 2,070 × 1,095× 1,775mm |
Our best estimate for the Star Micronics SB-20RII is $90,000 - $150,000. This is an estimate for a swiss-type lathes in this class, not a quote from Star Micronics; configuration, tooling, automation and installation move the final price substantially. A specific price can be requested at https://machinetoolindex.com/machines/star-micronics-new-sb-20rii#price; the request is passed to Star Micronics or an authorised dealer.
Maximum machining diameter goes from 20 mm (25/32 in) to 25.4 mm (1 in). Maximum speed of both the main and the sub spindle goes from 10,000 RPM to 8,000 RPM. Star's table gives one set of power figures, 2.2 kW continuous / 3.7 kW (10 min, 25% ED) on the main spindle, with no separate rating for the option.
Star lists 7 axes. The turning post takes 6 tools with 12 mm shanks or 5 tools with 16 mm shanks. Sub spindle tooling is 4 stations as standard, expandable to 6.
With the guide bush the maximum headstock stroke is 205 mm (8 in). Without the guide bush it is bar diameter x 2.5, to a maximum of 50 mm. The machine can therefore be set up either for long, slender parts or for short parts that do not need guide-bush support.
Both are ø20mm (25/32in) machines with 35 m/min rapid traverse. The SB-20RII runs a Fanuc 0i-TF Plus control, weighs approximately 2,000kg and takes 6 tools (12 mm) or 5 tools (16 mm), with ø25.4mm (1in) bar as an option. The SB-20R Type G is listed with a Fanuc 31i-B control, a weight of 1,700 kg and 6 tools (ø12mm) / 7 tools (ø10mm).
The machine weighs approximately 2,000kg and its dimensions are 2,070 x 1,095 x 1,775 mm. The coolant tank holds 180 L. Star's table for this model gives no electrical supply or air figures, so request those with the installation drawing.
