Mazak QUICK TURN 350MS
Key Specifications
X Travel
Z Travel
Max Turn Length
max turning diameter
swing over bed
bar capacity
Overview
The Mazak QUICK TURN 350MS combines the large-frame QT-350 platform with a sub-spindle and live tooling for done-in-one processing of big parts without Y-axis. The MS configuration targets production shops machining larger-diameter components that need backworking on both ends but can keep milling features on or near centerline.
The main spindle delivers 30 kW (40 hp) at 3,300 RPM through an A2-8 spindle nose with 80 mm (3.15 in) bar capacity. The sub-spindle runs 15 kW (20 hp) at 4,500 RPM through a 10-inch chuck, providing automatic part pickup, cutoff, and backworking with enough power for serious material removal on the back end.
The 12-position turret accepts live tools running at 4,500 RPM with C-axis indexing. Max turning diameter is 420 mm (16.54 in) over a 710 mm (27.95 in) swing, with 604 mm (23.8 in) of turning length on the standard bed. Axis travels are 260 mm on X and 650 mm on Z. Rapids hit 30 m/min on both axes. Machine weight is approximately 8,000 kg (17,637 lb).
MAZATROL SmoothG handles the control with built-in synchronization cycles for dual-spindle operations. The 15-inch touchscreen interface and 3D simulation help verify complex programs before cutting.
The QT-350MS competes with the Okuma LB3000 EX II MS, Doosan Puma 3100MS, and DMG Mori NLX 3000 with sub-spindle. It offers a cost advantage over the full MSY variant while retaining sub-spindle capability. New pricing typically falls between $200,000 and $300,000, with used units from recent years trading between $85,000 and $180,000. Specs sourced from Mazak Corporation published data.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 420 mm (16.54 in) |
| Max Turning Length | 604 mm (23.8 in) |
| Swing Over Bed | 710 mm (27.95 in) |
| Bar Capacity | 80 mm (3.15 in) |
| X-Axis Travel | 260 mm (10.24 in) |
| Z-Axis Travel | 650 mm (25.6 in) |
| Main Spindle Speed | 3,300 RPM |
| Main Spindle Power | 30 kW (40 hp) |
| Main Spindle Nose | A2-8 |
| Sub Spindle Speed | 4,500 RPM |
| Sub Spindle Power | 15 kW (20 hp) |
| Sub Spindle Chuck | 10 in |
| Live Tool Speed | 4,500 RPM |
| Live Tool Power | 5.5 kW (7.4 hp) |
| Tool Stations | 12-position turret |
| Turret Type | Live tooling turret |
| Chuck Size | 18" |
| Rapid Traverse X | 30 m/min (1,181 ipm) |
| Rapid Traverse Z | 30 m/min (1,181 ipm) |
| CNC Control | MAZATROL SmoothG |
| Machine Weight | 8,000 kg (17,637 lb) |
| Max Machining Diameter | Φ14.75″ |
| Max Machining Length | 23.8″ / 62.72″ |
Specifications sourced from mazak.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Sub-spindle with 15 kW (20 hp) and 10-inch chuck provides serious backworking capability for large-diameter parts
- 30 kW built-in motor main spindle handles heavy roughing in steel, stainless, and cast iron without belt vibration
- 80 mm bar capacity with automatic sub-spindle cutoff and transfer enables bar-fed production of large-diameter parts
- Lower cost than the QT-350MSY by omitting Y-axis while retaining full sub-spindle done-in-one capability
- MAZATROL SmoothG with built-in synchronization cycles simplifies programming of complex dual-spindle operations
- 12-inch main chuck and 10-inch sub-spindle chuck handle a wide range of large-diameter chucking work
Limitations
- No Y-axis limits milling to features on or near the part centerline; off-center work requires the QT-350MSY
- 8,000 kg machine weight demands reinforced foundation and careful floor space planning
- 4,500 RPM live tool speed is moderate for milling aluminum; adequate for steel and stainless applications
- Starting around $200K new, the sub-spindle configuration carries a significant premium over the base QT-350M
Best For
Frequently Asked Questions
01
New pricing typically falls between $200,000 and $300,000 depending on options. Adding high-pressure coolant, bar feeder, parts catcher, and tailstock pushes the price higher. Used units from recent years trade between $85,000 and $180,000.
02
Both have milling and a sub-spindle. The MSY adds Y-axis with 120 mm of off-center travel. The Y-axis adds approximately $30,000-$50,000 to the price. Choose the MS if your parts only need centerline milling operations.
03
The sub-spindle uses a 10-inch chuck, which is unusually large for sub-spindle work and can handle the bigger-diameter parts that the 12-inch main chuck produces. The 15 kW sub-spindle motor provides enough power for meaningful backworking operations.
04
Yes. The 30 kW built-in motor spindle delivers 40 hp with strong low-end torque for aggressive roughing in steel, stainless, and cast iron. The heavy machine weight of 8,000 kg provides the mass needed to absorb vibration during interrupted cuts.
Videos
Mazak North America
Surplex
