The Star Micronics SR-20J is an industrial-grade CNC Lathes & Turning Centers powered by the Standard CNC. a top spindle speed of 10,000 RPM, and a 3-axis kinematic layout. It supports standardized digital factory monitoring via MTConnect.
Star SR-20J Swiss-type lathe: 20 mm (25/32 in) bar, matched 10,000 rpm spindles at 2.2 kW continuous, up to 9 axes with Y1 and Y2, 2,750 kg.
| Standardized Parameters & Ratings | |
|---|---|
| Manufacturer (Brand) | Star Micronics (Japan) |
| Machine Type | CNC Lathes & Turning Centers |
| CNC Controller System | Standard CNC |
| 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 | 2,750 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Max Machining Diameter | 20 mm (0.787 in) |
| Max Machining Length | 205 mm (8.07 in) |
| Number Of Axes | Up to 9 (including Y1, Y2, C1, C2) |
| Rapid Traverse | 35 m/min (X1, X2, Z1, Z2); 24 m/min |
| Machine Weight | 2,750 kg |
| Power Consumption | 10 kVA |
| Max Turning Diameter | ø20mm (25/32in) |
| Max Turning Length | 205mm (8in) Type C / Bar diameterx2.5 Type N |
| Bar Capacity | Ø20 mm (25/32 in); Optional (OP): Ø23 mm (29/32 in) |
| Max Spindle Speed | 10,000 rpm |
| Spindle Motor Power | 2.2 kW (continuous) / 3.7 kW (10min./25%ED) |
| Turret Stations | 6 tools |
| Tool Shank | 12mm |
| Headstock Stroke | 205 mm (8 in) |
| Sub Spindle Speed | 10,000 rpm |
| Sub Spindle Power | 2.2 kW (continuous) / 3.7 kW (10min/25%ED) |
| Turning Tools | 6 tools |
| Footprint | 2,250 × 1,200 × 1,700 mm |
Our best estimate for the Star SR-20J is $180,000 - $320,000. 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-sr-20j#price; the request is passed to Star Micronics or an authorised dealer.
The table separates them by maximum turning length. Type C is listed at 205mm (8in). Type N is listed as bar diameter × 2.5. Type N therefore suits short parts, and Type C is the one for shafts. The table does not describe other differences between the types.
Yes, in the listed figures. Both spindles run to 10,000 rpm and both are rated 2.2 kW continuous and 3.7 kW on the 10min./25%ED rating. Back-end operations can be planned with the same cutting data as front-end operations, which helps balance the two halves of a cycle.
The standard capacity is 20 mm (25/32 in). Ø23 mm (29/32 in) is listed as an option, marked OP in the table, so it has to be specified with the order. Check collet and guide bushing availability for the larger size at the same time.
Up to 9, including Y1, Y2, C1 and C2. A Y axis and a C axis on each side means milled and cross-drilled features can be placed off centre on both ends of the part. Because the row says "up to", confirm the axis list of the configuration you are quoted.
The footprint is 2,250 × 1,200 × 1,700 mm, the weight is 2,750 kg and the supply requirement is 10 kVA. The bar feeder is not included in those dimensions, so add its length to the layout before fixing the position.
