The Mazak INTEGREX I‑350H ST AG is a high‑capacity hybrid multi‑tasking CNC machine that combines precision turning, full 5‑axis milling, and integrated gear cutting into a single, highly versatile platform. Based on the robust I‑350H series, the “ST” designation adds both a second spindle (“S”) and a lower turret (“T”), enabling simultaneous multi‑axis operations that significantly improve throughput and reduce idle time. The “AG” package (Auto Gear) incorporates gear hobbing, gear skiving, and gear milling capabilities, allowing complex gear features to be machined without a separate gear cutting center.
This machine is designed for larger parts, typically accommodating diameters up to roughly 700–800 mm with extended machining lengths — ideal for industries such as aerospace, power generation, automotive, and heavy industrial manufacturing. It features dual spindles with high‑torque turning capability, a powerful B‑axis milling head capable of complex angular contouring, and a rigid hybrid roller guide system built to handle heavy cuts and long production cycles. The integrated gear machining functions expand its versatility, enabling the production of high‑precision gears alongside standard components in one setup.
Equipped with Mazak’s advanced MAZATROL SmoothAi control, the I‑350H ST AG delivers intuitive programming, real‑time diagnostics, and seamless automation integration. Its blend of multi‑process machining and gear‑integrated capability makes it a powerful choice for manufacturers seeking consolidated production with improved accuracy and efficiency.
MAZAK INTEGREX I‑350H ST AGSPECIFICATIONS
MAZAK INTEGREX I-350H ST AG – AXIS
Advanced multi-tasking CNC machine with integrated gear cutting
X, Y, Z linear axes
B-axis tilting milling spindle
C-axis for main and sub-spindle indexing
ST configuration: dual spindle + lower turret
Full simultaneous 5-axis machining with AG gear cutting (skiving, hobbing, end milling)
MAZAK INTEGREX I-350H ST AG – AXIS TRAVELS
X-axis travel: approx. 695 mm
Y-axis travel: approx. 300 mm
Z-axis travel: approx. 1500 mm
B-axis rotation: approx. -30° to +190°
C-axis rotation: 360° continuous (main & sub spindle)
MAZAK INTEGREX I-350H ST AG – CAPACITY
Maximum turning diameter: approx. 670 mm
Maximum machining length: approx. 1519 mm
Chuck size: 10 inch
Designed for medium to long shaft and gear components
Complete front and back machining capability
MAZAK INTEGREX I-350H ST AG – SPINDLE
Main spindle speed: up to approx. 4000 RPM
Sub-spindle speed: up to approx. 4000 RPM
Milling spindle speed: up to 12000 RPM
High-torque built-in motor spindle
Synchronized spindle control for gear machining
MAZAK INTEGREX I-350H ST AG – TABLE
Dual spindles act as workholding units
Lower turret enables simultaneous machining
High rigidity structure for precision
Optimized for long and complex components
MAZAK INTEGREX I-350H ST AG – TOOL TURRET
Tool magazine capacity: approx. 30–72 tools
Lower turret provides additional tooling capacity
Automatic tool changer (ATC)
Supports gear cutting tools and complex setups
MAZAK INTEGREX I-350H ST AG – FEEDRATES
High-speed rapid traverse
Smooth and precise axis motion
Optimized for gear cutting and heavy machining
Stable performance for long cycle operations
MAZAK INTEGREX I-350H ST AG – COOLANT & CHIP MANAGEMENT
High-pressure coolant system
Through-spindle coolant capability
Jet stream coolant for gear cutting (optional)
Efficient chip conveyor system
MAZAK INTEGREX I-350H ST AG – CONTROL SYSTEM
Mazatrol SmoothAi CNC control
Conversational programming with gear machining support
AI-based thermal compensation and optimization
Digital twin and simulation capability
MAZAK INTEGREX I-350H ST AG – POWER & AIR REQUIREMENTS
Power requirement: approx. 55–75 kVA
Air pressure requirement: approx. 5–6 bar
Energy-efficient system with monitoring
Designed for continuous industrial production
MAZAK INTEGREX I-350H ST AG – DIMENSIONS
Machine footprint: approx. 4200 x 2700 mm
Machine height: approx. 2800–3000 mm
Machine weight: approx. 14,000–18,000 kg
Rigid and stable machine construction
MAZAK INTEGREX I-350H ST AG – GENERAL INFORMATION
Combines turning, milling, 5-axis machining, and gear cutting
ST configuration increases productivity with lower turret
Enables complete machining in a single setup
Eliminates need for separate gear cutting machines
Ideal for high-mix, high-precision production
INDUSTRIES THAT USE MAZAK INTEGREX I-350H ST AG
Automotive (gear and transmission manufacturing)
Aerospace industry
Industrial machinery
Energy and power transmission
Precision engineering
TYPICAL PARTS MAZAK INTEGREX I-350H ST AG CAN PRODUCE
Gears (spur, helical, internal)
Long transmission shafts
Aerospace precision components
Pump and valve components
Complex multi-operation parts
WHY CHOOSE MAZAK INTEGREX I-350H ST AG
Combines gear cutting with full multi-tasking machining
Dual spindle + lower turret for maximum productivity
Reduces setup time and machining cost
High accuracy with integrated inspection
Ideal for long, complex, high-value components
WHY BUY USED MAZAK INTEGREX I‑350H ST AG
Purchasing a used Mazak INTEGREX I‑350H ST AG is a smart way to gain high‑end multi‑tasking and gear manufacturing capability while managing capital costs. The combination of dual spindles, lower turret, and integrated gear machining allows complete part production — including complex gears — in a single setup. This reduces handling steps, improves accuracy, and shortens production cycles, making it valuable for shops producing shafts, housings, and gear‑related components where precision and efficiency are key.
Used machines from 2010 to 2025 usually come equipped with MAZATROL Smooth or SmoothAi controls, offering advanced programming tools, improved diagnostics, and compatibility with modern automation systems. These features help reduce setup time and support high mix‑low volume manufacturing as well as batch production. Machines from 2000–2010 may feature older control systems and higher cutting hours but remain mechanically robust and suitable for complex multi‑process work if well maintained.
Cutting time is a critical factor when evaluating a used unit; machines with lower spindle, turret, and gear hours generally have less wear on core components such as spindles, bearings, and rotary axes, indicating longer remaining service life. Maintenance history, included tooling and fixturing, and gear software packages also significantly influence value. Buying a used I‑350H ST AG allows manufacturers to expand capabilities with reduced upfront investment and controlled depreciation.
HOW MUCH DOES A USED MAZAK INTEGREX I‑350H ST AGCOST?
The price of a used Mazak INTEGREX I‑350H ST AG varies based on age, condition, configuration, included gear‑cutting functionality, and total cutting hours. Machines manufactured between 2010 and 2025 typically range from approximately $400,000 to $850,000. Units at the higher end of this range often have low cutting hours, complete AG gear‑machining packages, modern MAZATROL SmoothAi controls, and additional options like automation readiness or advanced fixturing. These attributes significantly enhance productivity and long‑term value.
Machines from the 2000–2010 period are generally priced between $240,000 and $450,000, depending on condition, usage, and any retrofits or upgrades. These older units may include earlier control systems and higher cumulative hours but still provide substantial multi‑tasking performance. Some may require control software updates or refurbishment to fully realize modern AG functionality, which should factor into the cost analysis.
Pre‑2000 machines in this exact ST AG configuration are uncommon, as integrated gear‑cutting I‑350H AG variants represent a more recent generation of Mazak technology. Cutting hours play a major role in valuation; machines with high spindle, turret, and gear hours may require future maintenance or component replacement, which can reduce current market value. Buyers should also consider included tooling, gear software packages, automation components, and service records, as these factors have a major impact on total investment and long‑term return on ownership.