CNC Sliding Head Lathe

STAR Micronics SR-20 RIII

## 2008 Star SR-20RIII – 20 mm CNC Sliding Head Lathe

Seven controlled axes | Twin spindles | Driven tooling | FMB magazine bar feeder | 140-bar coolant

Available from Swiss CNC, this 2008 Star SR-20RIII CNC sliding head lathe combines 20 mm machining capacity, twin spindles and driven tooling for the production of precision components from bar. Equipped with FANUC Series 300iS-Model A CNC control, it offers versatile turning, milling, drilling, tapping and back-working capability.

The sliding head and guide bush arrangement supports the material close to the cutting point, making the machine particularly suited to small-diameter and slender components. C-axis control on both spindles allows accurately positioned machining features, while the opposed sub-spindle enables rear-face finishing and secondary operations within the same machine cycle.

Independent front- and back-working capability allows operations to overlap where the component and programme permit, helping reduce cycle times and the need for additional handling between machines.

### Technical specification

| Specification | Details |
|---|---|
| Manufacturer / model | Star SR-20RIII |
| Year of manufacture | 2008 |
| Maximum machining diameter | 20 mm |
| Maximum headstock stroke | 205 mm |
| Controlled axes | Seven: X, Y, Z, XB and ZB, plus C-axis control on both spindles |
| Main spindle speed | Up to 10,000 rpm |
| Sub-spindle speed | Up to 8,000 rpm |
| CNC control | FANUC Series 300iS-Model A |
| Rapid traverse | Up to 35 m/min |
| Approximate machine weight | 2,200 kg, excluding bar feeder and ancillary equipment |

### Standard tooling layout

- Six turning-tool positions for external turning, profiling, grooving and parting.
- Five radial driven-tool positions for cross-drilling, milling and tapping applications.
- Four front-working sleeve positions for end-working operations.
- Four-position back-working station for machining components held in the sub-spindle.

### Included equipment

- FMB Turbo 3-36 automatic magazine bar feeder for 3.2 m bar stock.
- 140-bar high-pressure coolant system — approximately 2,000 psi.
- LNS MH500 swarf conveyor, compatible with long-parts ejection.
- JBS guide bush system.
- TriMist Extraction
- Noble fire suppression system.

The combination of magazine bar feeding, high-pressure coolant and swarf handling provides a useful equipment package for repeat batch production and components requiring several machining operations.

### Machine hours

Approximately 56,000 power-on hours. Cutting hours - 17,000
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Available in the UK. Price on application, plus VAT.

Contact Swiss CNC for pricing, machine videos, inspection arrangements and delivery or installation requirements.

*Tooling layout describes the standard model configuration; the supplied toolholder package is subject to confirmation.*