RAM-Type Vertical Turning Centre (RAM VTL)
Stallion SR Series — High Rigidity · High Stability · Multi-Tasking
A RAM-type vertical turning centre uses a vertical ram structure carrying the tool spindle, delivering exceptional rigidity for deep internal turning and heavy-cut operations on large workpieces. The Stallion SR Series combines a closed-box ram, integrally cast bed and column, JIS Class 1 helical drive gears, and a CF-axis with 15-arcsec indexing — available in ATC and ATC+C (C-axis turn-mill) variants. Five sizes from Ø1000 to Ø2500 table diameter, max workpiece weight 15,000 kg.
Technical Data
Full Specifications
All SR Series Sizes (ATC and ATC+C Variants)
| Specification | SR1000 | SR1250 | SR1600 | SR2000 | SR2500 |
|---|---|---|---|---|---|
| Table diameter (mm) | Φ1000 | Φ1250 | Φ1600 | Φ2000 | Φ2500 |
| Max swing diameter (mm) | Φ1350 | Φ1600 | Φ2000 | Φ2500 | Φ3000 |
| Max cutting height (mm) | 800 | 1,300 | 1,300 | 1,600 | 1,600 |
| Max workpiece weight (kg) | 4,000 | 5,000 | 8,000 | 10,000 | 15,000 |
| Spindle speed range (rpm) | 1–600 | 1–350 | 1–250 | 2–200 | 1–160 |
| Max spindle torque (N·m) | 8,842 | 9,222 | 20,139 | 36,772 | 45,899 |
| Spindle motor power (kW) | 37 / 45 | 37 / 45 | 37 / 45 | 60 / 75 | 60 / 75 |
| Tool positions (ATC | +C) | 12 | 16 | 12 | 16 | 12 | 16 | 12 | 16 | 12 | 16 |
| CNC system | FANUC / Siemens | FANUC / Siemens | FANUC / Siemens | FANUC / Siemens | FANUC / Siemens |
Build & Equipment
Standard Features Optional Equipment
Standard Features
- Integrally cast bed and column (high-strength cast iron)
- Multi-aging stress relief
- Closed-box ram integrated with tool spindle
- Z-axis dual-cylinder hydraulic balance
- Wide-bearing-span crossed roller bearing
- JIS Class 1 helical drive gears
- 12-tool ATC (ATC variant)
- 7/24 BT-50 tool holders
Optional Equipment
- ATC+C variant (C-axis turn-mill + power sub-spindle)
- 16-tool magazine (with +C)
- Siemens controller option
- Higher spindle motor (SR2000 / SR2500)
- Custom workpiece envelopes
- Robotic integration
Applications
Typical Workpieces
Turbine Discs
Aerospace Wheels
Energy Rotors
Rail Bogies
Answers
Frequently Asked Questions
What is a RAM-type vertical turning centre?
A RAM-type VTC uses a vertically oriented ram structure carrying the tool spindle, instead of a conventional sliding cross-rail tool head. The ram architecture delivers superior rigidity, especially for deep internal turning, long-stroke vertical cuts, an
What is the difference between ATC and ATC+C variants?
ATC variants include an automatic tool changer (12 tools standard) for turning operations only. ATC+C variants add a power sub-spindle driven through a two-stage gearbox plus a CF-axis with 15-arcsec indexing — enabling turning, milling, drilling, tapping
What is C-axis turn-mill capability?
C-axis turn-mill capability means the workpiece spindle can be controlled as a positioned rotary axis (the C-axis) in synchronisation with driven milling tools — letting you perform milling, drilling, tapping, slotting, and contour work on a turned part i
Which industries are SR Series machines used in?
SR Series machines are used across aerospace (turbine discs, structural rings), automobile manufacturing (large wheels and hubs), energy equipment (rotors, generators, wind turbine components), rail transit (bogie components), and heavy industry. They are
Why is the Stallion SR Series superior to competitor RAM-type VTCs?
The SR Series combines a closed-box ram structure integrated with the tool spindle, a wide-bearing-span crossed roller bearing, JIS Class 1 helical drive gears, and a CF-axis with high-resolution servo motor and double-lead worm gears delivering 15 arc-se