The Star Micronics SR-20R IV Type A/B 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-20R IV Type A/B Swiss-type lathe: 20 mm (25/32 in) bar, 27-position station for up to 41 tools, matched 10,000 rpm spindles, 2,600 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 |
| Automatic Tool Changer (ATC) | 41 Tool Stations |
| Approx. Machine Weight | 2,600 kg |
| Industrial IoT Protocol | MTConnect ANSI/MTC1.4 Compliant (Ethernet/TCP) |
| Max Machining Diameter | 20 mm (25/32 in) |
| Max Headstock Stroke Standard | 205 mm (8 in) |
| Max Headstock Stroke Rmgb | 160 mm |
| Sub Spindle Speed | 10,000 rpm |
| Sub Spindle Power | 2.2 kW (continuous) / 3.7 kW (10min/25% ED) |
| Tool Stations | 27-position (up to 41 tools) |
| Front Tools | 5 tools (12 mm) + 2 rear tools |
| Cross Milling Tools | 3 tools |
| Machine Weight | 2,600 kg |
| Max Turning Diameter | ø20mm (25/32in) |
| Max Turning Length | 205mm (8in) |
| Bar Capacity | Ø20 mm (25/32 in) |
| Turret Stations | 27-position |
| Tool Capacity | 41 tools |
| Max Spindle Speed | 10,000 rpm |
| Spindle Motor Power | 2.2 kW (continuous) / 3.7 kW (10 min/25% ED) |
| Headstock Stroke | 205 mm (8 in) |
| Turning Tools | 7 tools (5 tools on the front + 2 tools on the rear (12 mm)) |
| Rapid Traverse | 35m/rpm (X1, X2, Y1, Z1, Z2), and 15m/rpm (Y2) |
| Footprint | 2,334 × 1,200 × 1,700 mm |
Our best estimate for the Star Micronics SR-20R IV Type A/B is $200,000 - $350,000. 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-20r-iv-type-a-b#price; the request is passed to Star Micronics or an authorised dealer.
Up to 41 tools in a 27-position tool station. Of these, 7 are turning tools on 12 mm shanks, 5 on the front and 2 on the rear, and 3 are cross milling tools. The table does not itemise the others. With more tools than positions, some positions must take more than one tool.
The table gives one set of figures for both types and does not state how they differ. Bar size, spindle ratings, tool station and weight are common to the two. Ask the dealer which functions or axes separate Type A from Type B before choosing.
They are listed the same. The main spindle is 10,000 rpm with 2.2 kW continuous and 3.7 kW on the 10 min/25% ED rating, and the sub spindle is 10,000 rpm with 2.2 kW continuous and 3.7 kW (10min/25% ED). Back-end cuts can be planned as heavily as front-end cuts.
The standard maximum headstock stroke is 205 mm (8 in), and the maximum turning length is given as 205mm (8in). With the RMGB arrangement the stroke is listed at 160 mm, so long parts favour the standard guide bush.
Both are ø20mm (25/32in) machines with 10,000 rpm spindles rated 2.2 kW continuous. The SR-20J lists 6 tools in its turning row, weighs 2,750 kg and offers Ø23 mm (29/32 in) bar as an option. The SR-20R IV has a 27-position station for up to 41 tools and weighs 2,600 kg.
