Mazak QTE-300MY SG
Key Specifications
X Travel
Y Travel
Z Travel
max turning diameter
max machining length
swing over bed
Overview
The Mazak QTE-300MY SG is the latest-generation 10-inch economy turning center with milling and Y-axis, incorporating Mazak's SG-series improvements in servo technology, thermal management, and control software. The SG designation brings better surface finishes, faster axis response, and improved dimensional stability over earlier QTE-300MY builds.
The main spindle delivers 22 kW (30 hp) at up to 4,000 RPM through an A2-8 spindle nose with 80 mm (3.15 in) bar capacity. The 12-station turret runs live tools at 6,000 RPM with 5.5 kW (7.4 hp), and the Y-axis provides 100 mm (+50/-50 mm) of off-center travel. Max turning diameter is 380 mm (14.96 in) with 550 mm (21.65 in) turning length. The SG generation's improved servo motors deliver faster acceleration profiles and reduced settling time.
Axis travels are 230 mm (X), 100 mm (Y), and 620 mm (Z) with rapids of 30 m/min on X and Z, and 10 m/min on Y. At approximately 5,600 kg (12,346 lb), the machine requires proper foundation work. The updated thermal compensation system in the SG generation maintains tighter tolerances during long production runs.
The MAZATROL SmoothEz control includes the latest SG-generation software updates with improved conversational programming cycles and enhanced tool management. The QTE-300MY SG competes with the Haas ST-30Y, Doosan Puma 3100MY, and Okuma LB3000 EX II MY. New pricing runs $115,000-$170,000. Specs sourced from Mazak Corporation published data.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 380 mm (14.96 in) |
| Max Machining Length | 22.6" |
| Swing Over Bed | 620 mm (24.4 in) |
| Bar Capacity | 80 mm (3.15 in) |
| X-Axis Travel | 230 mm (9.06 in) |
| Y-Axis Travel | 100 mm (±50 mm) |
| Z-Axis Travel | 620 mm (24.41 in) |
| Main Spindle Speed | 4,000 RPM |
| Main Spindle Power | 22 kW (30 hp) |
| Main Spindle Nose | A2-8 |
| Live Tool Speed | 6,000 RPM |
| Live Tool Power | 5.5 kW (7.4 hp) |
| Tool Stations | 12 |
| Turret Type | Live tooling turret with Y-axis |
| Chuck Size | 8″ |
| C Axis Resolution | 0.0001 degrees |
| Rapid Traverse X | 30 m/min (1,181 ipm) |
| Rapid Traverse Y | 10 m/min (394 ipm) |
| Rapid Traverse Z | 30 m/min (1,181 ipm) |
| CNC Control | MAZATROL SmoothEz |
| Machine Weight | 5,600 kg (12,346 lb) |
| Supported Models | Turret type |
| 100m 100my 100ms 100msy200m 200my 200ms 200msy | 12 Position Drum Turret |
| Max Machining Diameter | Φ13.4" |
Specifications sourced from mazak.com — verified 2026-03-28
Strengths & Limitations
Strengths
- SG generation delivers improved servo response, thermal compensation, and surface finish quality over previous QTE-300MY builds
- 22 kW spindle with 80 mm bar capacity handles mid-size production parts in steel and stainless without compromise
- 5.5 kW live tooling at 6,000 RPM provides genuine milling power for cross-drilling, hex cutting, and keyway work
- Y-axis with 100 mm travel enables off-center milling features without a secondary VMC setup
- Updated SmoothEz software includes improved conversational cycles and tool management
- Economy pricing with SG improvements narrows the performance gap to the Quick Turn 350MY
Limitations
- 4,000 RPM spindle speed limits surface speed on smaller-diameter turning operations
- SmoothEz control still lacks some advanced SmoothG features including detailed machining simulation
- SG premium adds $5,000-$10,000 over a standard QTE-300MY if one is still available
- 550 mm turning length limits shaft work compared to Quick Turn long-bed variants
Best For
Frequently Asked Questions
01
SG indicates the latest generation with improved servo motors, enhanced thermal management, and updated SmoothEz control software. The SG generation delivers better surface finishes, faster axis acceleration, and improved dimensional stability during long production runs.
02
The SG version offers improved servo response, better thermal compensation, and updated control software. Core specs like spindle power, travel, and live tool capability remain the same. The SG premium is typically $5,000-$10,000. For new purchases, the SG is the current production version.
03
New QTE-300MY SG machines run $115,000-$170,000 depending on options. This positions it between the base QTE-300M and the fully loaded QTE-300MSY in Mazak's economy lineup.
04
For shops running long production runs where thermal drift matters, the SG improvements in thermal compensation pay for themselves in reduced scrap and fewer mid-run adjustments. For short-run job work, the difference is less noticeable.
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