Mazak INTEGREX i-250S NEO
Key Specifications
X Travel
Y Travel
Tool Capacity
max machining diameter
max machining length
b axis range
Overview
The Mazak INTEGREX i-250S NEO is the dual-spindle variant of the current-generation i-250 NEO platform, combining the NEO redesign's compact milling head and front-mounted tool magazine with a fully programmable sub spindle for done-in-one processing of both part ends. The S designation adds automatic part transfer capability to the i-250 NEO's 8-inch-chuck work envelope, eliminating manual refixturing on parts requiring back-end features.
The main turning spindle delivers 26 kW (35 hp) at 4,000 RPM through an 8-inch chuck with 80 mm (3.15 in) bar capacity. The sub spindle provides 18.5 kW (25 hp) at 4,000 RPM with a 6-inch chuck for finishing and back-working operations after part transfer. The NEO-generation compact milling spindle head, 17% shorter than the previous i-250S, runs at 12,000 RPM with 24 kW (32 hp) through HSK-A63 tooling, with a 20,000 RPM high-speed option available for aluminum and composite finishing.
Axis travels span 695 mm (27.4 in) on X, 300 mm (11.81 in) on Y, and machining lengths of 1,011 mm (39.80 in) or 1,519 mm (59.80 in) depending on bed configuration. Maximum machining diameter is 670 mm (26.38 in). The B-axis provides 240 degrees of rotation (-30 to +210 degrees) with roller cam drive and 0.0001-degree indexing, while the C-axis provides continuous 360-degree rotation on both spindles. The front-mounted 36-tool magazine expands to 72 or 110 positions.
The SmoothAi control with Ai Thermal Shield provides active thermal compensation during extended multi-tasking cycles. Machine weight is approximately 14,500 kg (31,967 lb). Competitors include the DMG Mori NTX 2000 and Okuma MULTUS B300II. New machines price between $420,000 and $600,000 depending on bed length and options.
Full Specifications
| Parameter | Value |
|---|---|
| Max Machining Diameter | Φ26.38" |
| Max Machining Length | 59.80" |
| X-Axis Travel | 695 mm (27.4 in) |
| Y-Axis Travel | 300 mm (11.81 in) |
| B Axis Range | 240° (-30° to +210°) |
| C Axis Rotation | 360° continuous (both spindles) |
| Main Spindle Speed | 4,000 RPM |
| Main Spindle Power | 26 kW (35 hp) |
| Sub Spindle Speed | 4,000 RPM |
| Sub Spindle Power | 18.5 kW (25 hp) |
| Milling Spindle Speed | 12,000 RPM (20,000 RPM optional) |
| Milling Spindle Power | 24 kW (32 hp) |
| Milling Spindle Taper | HSK-A63 (Capto C6 optional) |
| Chuck Size | 12" |
| Bar Capacity | 80 mm (3.15 in) |
| Tool Capacity | 36 tools (72 or 110 optional) |
| Rapid Traverse Xz | 50 m/min (1,969 ipm) |
| Compact Milling Head | 17% shorter than previous gen |
| Tool Magazine | Front-mounted |
| Machine Weight | 14,500 kg (31,967 lb) |
| CNC Control | MAZATROL SmoothAi CNC with Ai Thermal Shield |
| 12000 Min 1standard | 12 kW (16 HP) (40% ED) |
| 185 Kw | i-200 NEO series |
| 24 Kw | i-250 NEO, i-350 NEO, i-450 NEO series |
| 12000 Min 1option | 24 kW (32 HP) (40% ED) |
| 20000 Min 1option | 24 kW (32 HP) (40% ED) |
| Y Axis Travel | 11.81" |
Specifications sourced from mazak.com — verified 2026-03-28
Strengths & Limitations
Strengths
- NEO-generation compact milling head is 17% shorter, expanding usable machining envelope and reducing tool interference compared to the previous i-250S
- Dual-spindle design with automatic part transfer enables complete done-in-one processing of both ends, eliminating refixturing errors on complex aerospace and medical parts
- 24 kW HSK-A63 milling spindle at 12,000 RPM delivers genuine machining center performance for heavy milling, drilling, and tapping within the multi-tasking cycle
- Front-mounted tool magazine allows tool loading during machine operation, reducing non-cutting time on high-mix production runs
- 300 mm Y-axis travel provides 43% more off-center reach than smaller i-100/i-200 NEO models for larger feature profiles
- SmoothAi with Ai Thermal Shield maintains dimensional accuracy during long unattended dual-spindle cycles that generate significant thermal variation
Limitations
- Starting price near $420K for the NEO-generation dual-spindle configuration represents a premium over the previous-gen i-250S
- 80 mm bar capacity limits bar work to medium diameters; shops regularly running 4-inch or larger bar stock need the i-350S NEO or i-450S NEO
- Programming complexity for simultaneous dual-spindle operations with B-axis milling requires advanced CAM software and experienced multi-tasking programmers with 3-6 months ramp-up
- 14,500 kg machine weight requires engineered foundations and adequate crane capacity that add $10,000-$25,000 to installation costs
Best For
Frequently Asked Questions
01
The NEO designation marks the current-generation redesign with three key improvements: a compact milling head that is 17% shorter for expanded machining envelope, a front-mounted tool magazine for tool loading during operation, and the SmoothAi control with Ai Thermal Shield for active thermal compensation. Expect a $20,000-$40,000 premium over the previous-gen i-250S.
02
Both are mid-size dual-spindle multi-tasking machines. The i-250S NEO offers the compact milling head advantage, front-mounted magazine, and MAZATROL SmoothAi ecosystem. The NTX 2000 counters with the CELOS control platform and direct-drive spindle technology. The Mazak tends to be priced 5-10% lower for comparable configurations.
03
The i-250S NEO comes in two bed lengths: 1,011 mm (39.80 in) and 1,519 mm (59.80 in) maximum machining length. Choose based on your longest planned part plus clearance for sub-spindle travel. The shorter bed saves floor space and cost.
04
Yes. The dual-spindle design with bar feeder interface handles lights-out production of complete parts. Add a part catcher, chip conveyor, and SmoothAi tool life management for extended unattended operation. Most shops report 6-12 hours of unattended runtime.
Videos
Yamazaki Mazak Corporation [English]
Theukmachinist
Related Machines
Mazak Integrex i-200
Okuma Multus B250II
DMG Mori CTX gamma 2000 TC
DMG Mori NTX 2000
DN Solutions SMX 3100ST
