Starrag Dorries VT Series
Key Specifications
Max Workpiece ⌀
machine type
table diameter vt14
table diameter vt20
table diameter vt28
max workpiece height
Overview
The Starrag Dorries VT Series is a family of single-column vertical turning lathes (VTLs) for multifunctional, high-precision pre- and finish-machining of medium-to-large rotation-symmetric components. The VT Series leverages the century-old Dorries name synonymous with precision vertical turning.
Available in three primary sizes: VT 14 (1,250 mm table), VT 20 (1,800 mm table), and VT 28 (2,500 mm table). Max workpiece diameter: 2,800 mm (110 in), max height: 2,650 mm (104 in), max weight: 17,000 kg (37,479 lb).
Beyond turning, the VT supports drilling, milling, and grinding for complete machining in a single setup. This reduces setups, minimizes re-clamping errors, and shortens lead times.
Siemens SINUMERIK CNC control with rigid single-column construction for thermal stability and vibration damping. New machines: $800,000 to $2,500,000.
Full Specifications
| Parameter | Value |
|---|---|
| Machine Type | Single-column vertical turning lathe |
| Table Diameter Vt14 | 1,250 mm (49.2 in) |
| Table Diameter Vt20 | 1,800 mm (70.9 in) |
| Table Diameter Vt28 | 2,500 mm (98.4 in) |
| Max Workpiece Diameter | 2,800 mm (110 in) |
| Max Workpiece Height | 2,650 mm (104 in) |
| Max Workpiece Weight | 17,000 kg (37,479 lb) |
| Operations | Turning, drilling, milling, grinding |
| CNC Control | Siemens SINUMERIK |
| Construction | Single-column design |
Specifications sourced from starrag.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Three table sizes (1,250/1,800/2,500 mm) cover a broad range of workpiece dimensions
- 17,000 kg max weight for heavy forgings, castings, and weldments
- Multifunctional turning, drilling, milling, grinding in one setup
- Proven single-column design for rigidity and thermal stability
- 2,800 mm max diameter for most industrial VTL applications
- Siemens SINUMERIK with modern CNC capability
Limitations
- Single-column limits max size vs double-column VC Series
- 17,000 kg may be insufficient for heaviest power gen components
- Significant capital investment for medium-scale turning
- Milling/grinding capabilities below dedicated machines
Best For
Frequently Asked Questions
01
VT 14 (1,250 mm), VT 20 (1,800 mm), VT 28 (2,500 mm). Max workpiece: 2,800 mm diameter, 17,000 kg.
02
Yes, supports turning, drilling, milling, and grinding in one setup.
03
VT: single-column, up to 17,000 kg. VC: double-column portal, up to 350,000 kg.
04
Siemens SINUMERIK CNC with cycle programming and tool management.
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