Swiss-Type Lathes
JS-20
by Jurassa
20 mm-capacity Swiss-type lathe for high-precision small-diameter turned parts.
20 mm (0.787 in)
Max bar diameter
350 mm (13.8 in)
Max turning length (guide bushing mode)
10,000 rpm
Main spindle speed
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Ideal For
- Small-diameter parts under 20 mm with tight length-to-diameter ratios
- Medical and electronics components needing sub-micron consistency
- High-volume unattended bar-fed production
- Shops needing both guide-bushing and bushingless flexibility
Max bar diameter
20 mm (0.787 in)
Max turning length (guide bushing mode)
350 mm (13.8 in)
Main spindle speed
10,000 rpm
Sub-spindle speed
10,000 rpm
Key Features
JS-20 Features
Standard features that set this machine apart in demanding manufacturing environments.
Ease of Operation
- Jurassa Corvo control with Swiss-specific cycle library
- Remote diagnostics port
Cutting Capability
- 26 tool positions including 6 driven stations
- Coolant-through-tool plumbing on driven stations
Built-In Extras
- Switchable guide bushing / bushingless operation
- Standard bar feeder interface for unattended running
- Compact footprint for high-density shop floor layouts
- Synchronized 10,000 rpm main and sub-spindle
Full Specifications
Jurassa JS-20 Technical Details
Complete specifications, standard features, and optional upgrades.
- Max bar diameter
- 20 mm (0.787 in)
- Max turning length (guide bushing mode)
- 350 mm (13.8 in)
- Main spindle speed
- 10,000 rpm
- Sub-spindle speed
- 10,000 rpm
- Total axes
- 7
- Tool positions
- 26
- Driven tool stations
- 6, up to 10,000 rpm
- Guide bushing
- Adjustable, switchable to bushingless mode
- Bar feeder interface
- Standard
- Positioning accuracy
- ±0.003 mm (0.00012 in)
- Repeatability
- ±0.002 mm (0.00008 in)
- Control
- Jurassa Corvo control
| Max bar diameter | 20 mm (0.787 in) |
| Max turning length (guide bushing mode) | 350 mm (13.8 in) |
| Main spindle speed | 10,000 rpm |
| Sub-spindle speed | 10,000 rpm |
| Total axes | 7 |
| Tool positions | 26 |
| Driven tool stations | 6, up to 10,000 rpm |
| Guide bushing | Adjustable, switchable to bushingless mode |
| Bar feeder interface | Standard |
| Positioning accuracy | ±0.003 mm (0.00012 in) |
| Repeatability | ±0.002 mm (0.00008 in) |
| Control | Jurassa Corvo control |
- Switchable guide bushing / bushingless operation
- Synchronized 10,000 rpm main and sub-spindle
- 26 tool positions including 6 driven stations
- Standard bar feeder interface for unattended running
- Jurassa Corvo control with Swiss-specific cycle library
- Compact footprint for high-density shop floor layouts
- Coolant-through-tool plumbing on driven stations
- Remote diagnostics port
- Extended sub-spindle back-working tool set
- Automatic part-length measurement probe
- High-pressure coolant upgrade, 40 bar
- Chip conveyor for high-volume swarf
- Medical device components and surgical instrument parts
- Electronics connectors and precision pins
- Precision fasteners and small shafts
- Watch, camera and optical mechanism components
FAQ
JS-20 Questions
Answers to common questions about the JS-20.
Guide-bushing mode supports the bar right at the cutting point, which is ideal for long, slender parts prone to deflection; bushingless mode removes that support for shorter parts where you want to minimize the remnant length left in the bar. The JS-20 switches between both without a machine change.
The machine has a standard interface for common short and long bar feeders; our applications engineers confirm compatible feeder models and specify the right one during your quote.
Typically 10-12 weeks build-to-order; stocked configurations may be available sooner — confirm current availability with your sales rep.
Yes, Swiss-type programming has its own logic around synchronized spindles and guide-bushing timing; our applications engineers develop and prove your first parts in the Vaughan Tech Centre before delivery.
Ready to Discuss the JS-20?
Our team has 32+ years of experience helping Canadian manufacturers find the right cutting and processing equipment.
32
Years in Business
4,800+
Machines Installed
46
Factory-Trained Technicians
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The JS-32 steps up Jurassa's Swiss-type platform to a 32 mm bar capacity and 9 total axes, adding a Y-axis and expanded back-working capability for parts with more complex geometry than the JS-20 handles comfortably. Twin 8,000 rpm spindles, 32 tool positions and eight driven stations cover hydraulic fitting components, larger medical instrument parts and precision automotive fasteners that need more than a straight turn-and-cut-off cycle. Tollaston recommends the JS-32 as the natural upgrade path once a shop's Swiss-type parts grow past 20 mm in diameter or start needing off-center milled features — the switchable guide bushing carries over from the JS-20, so the process knowledge your team already has transfers directly.