Tornos CT 20
Key Specifications
max bar capacity
max machining diameter
max machining length
spindle configuration
main spindle speed
main spindle power
Overview
The Tornos CT 20 is a twin-spindle Swiss-type CNC automatic lathe for parts up to 20mm in diameter, designed around simultaneous dual-spindle production to maximize throughput in the 20mm precision parts market. The CT series represents Tornos's approach to the competitive 20mm Swiss segment: a fully CNC platform with twin spindles working simultaneously, targeting applications where the ability to produce two parts concurrently provides a decisive production efficiency advantage over single-spindle Swiss-type machines.
The CT 20's twin-spindle architecture means that both spindles are producing parts simultaneously—not sequentially with one spindle idle while the other runs—which in principle doubles production output from a single machine footprint compared to single-spindle Swiss platforms. For high-volume precision parts in the connector, medical fastener, and watchmaking component markets, this parallel production capability compresses the cost-per-part economics significantly. The CT 20 achieves this without requiring the operator overhead of managing two independent machines, as both spindles are coordinated by the Tornos TISIS control in a single integrated production cycle.
At 20mm bar capacity, the CT 20 addresses the same diameter market as the dominant Citizen L20-XII, but with a fundamentally different production architecture. Where the L20-XII focuses on a single part with maximum multi-axis simultaneous operation (up to 12 axes) on that part, the CT 20 produces two parts in parallel on two spindles with coordinated CNC control. The optimal choice between architectures depends on part complexity versus part volume: highly complex parts that need extensive simultaneous axis capability favor single-spindle high-axis platforms; simpler high-volume parts that need maximum output favor the CT 20's twin-spindle parallel approach.
Tornos's TISIS control manages the twin-spindle CT 20 with the motion coordination intelligence that ensures both spindles maintain synchronized production cycles and consistent part quality across simultaneous operation. The CT 20 supports guide bushing configuration for the long, slender parts that define Swiss-type work, and includes driven tooling for both spindles to enable complete part machining including milled features and threading.
Full Specifications
| Parameter | Value |
|---|---|
| Max Bar Capacity | 20 mm (0.787 in) |
| Max Machining Diameter | 20 mm (0.787 in) |
| Max Machining Length | 170 mm (6.69 in) |
| Spindle Configuration | Twin spindle (simultaneous dual-spindle production) |
| Main Spindle Speed | 10,000 RPM (each spindle) |
| Main Spindle Power | 2.2 / 3.0 kW per spindle |
| Number Of Axes | Dual simultaneous CNC control |
| Guide Bushing | Yes (both spindles) |
| Driven Tooling | Yes (both spindles) |
| CNC Control | Tornos TISIS |
| Machine Footprint | Approx. 2,000 x 1,200 mm (78.7 x 47.2 in) |
| Machine Weight | Approx. 3,000 kg (6,614 lbs) |
| End | Jump right by 75% |
| Page Up | Jump up by 75% |
| Page Down | Jump down by 75% |
Specifications sourced from tornos.com — verified 2026-03-28
Strengths & Limitations
Strengths
- [object Object]
- [object Object]
- [object Object]
- [object Object]
Limitations
- [object Object]
- [object Object]
- [object Object]
Best For
Frequently Asked Questions
01
The CT 20 has two independent spindles that operate simultaneously, each processing its own bar of stock and producing a complete part in parallel. The Tornos TISIS control coordinates both spindle programs in a synchronized production cycle. Both spindles complete parts at the same time, approximately doubling output relative to a single-spindle machine running the same program.
02
The CT 20 is the stronger choice for high-volume programs of moderate-complexity parts where maximum output per machine is the priority. The L20-XII is the stronger choice for complex parts requiring 12-axis simultaneous capability, LFV chip-breaking, or the full tooling complement needed for the most demanding programs. If your primary metric is parts-per-hour on proven high-volume programs, CT 20; if your primary metric is ability to handle the most complex programs, L20-XII.
03
New CT 20 pricing typically ranges from $220,000 to $340,000 depending on tooling configuration and options. The twin-spindle architecture commands a premium over single-spindle platforms, which is justified when volume warrants the dual-output production investment.
04
No. The CT 20 is managed as a single machine with one integrated control, one setup, and one operator. The twin-spindle simultaneous production runs under a coordinated program from the Tornos TISIS control. Bar feeders and parts catchers service both spindles, enabling one-operator or unattended lights-out production.
05
The CT 20 handles bar stock up to 20mm (0.787 in) in diameter on each of its two simultaneous production spindles. Both spindles are fed from separate bar feeders, enabling continuous production without one spindle idle while the other is loaded.
Videos
MTDCNC
TornosGroup channel
MTDCNC
MTDCNC
RDMO Second-Hand Machine Tools
Community Discussions
Community discussion — CT20 Parameters - cnczone.com
Community discussion — CT20 Parameters - cnczone.com
Community discussion — Looking for Tornos programming manuals, example programs and ...
Community discussion — Tornos Manuals - CNCzone
Community discussion — Tornos Swiss lineup : r/Machinists - Reddit
Community discussion — This is hanging up in the Swiss CNC department. - Reddit
Community discussion — Water jet recommendations? : r/Machinists - Reddit
Community discussion — CNC Mill Recommendations : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.




