Okuma VTM-65
Key Specifications
Max Spindle
Tool Capacity
Rapid Traverse
Spindle Power
max turning diameter
max workpiece height
Overview
The Okuma VTM-65 is a vertical turning and milling center that combines a vertical lathe table with a true milling spindle, creating a multitasking platform for complex parts that would otherwise require setups on both a lathe and a machining center. The maximum turning diameter is 650 mm (25.6 in) with a maximum workpiece height of 500 mm (19.7 in) and table load capacity of 500 kg (1,102 lb).
The table spindle runs up to 700 RPM for turning operations with 30/22 kW (40/30 hp) and 600 Nm (443 ft-lb) of torque. The milling spindle delivers 22/15 kW (30/20 hp) at up to 10,000 RPM with a CAT 40 (BT 40) taper, providing genuine machining center capability rather than the limited milling offered by driven turret tools. The milling spindle tilts on a B-axis from -30 to +120 degrees, enabling angled drilling, contouring, and 5-axis-like positioning when combined with the C-axis table rotation.
X-axis travel is 550 mm (21.7 in), Y-axis is 350 mm (13.8 in), and Z-axis is 550 mm (21.7 in). The ATC holds 32 tools standard with options up to 80, providing the tool library depth needed for complex multitasking parts. Rapid traverse is 30 m/min on linear axes.
Okuma's Thermo-Friendly Concept is essential on a multitasking machine where both turning and milling generate heat in different areas of the structure. Collision Avoidance System models the milling spindle, turret, and workpiece in 3D to prevent crashes during the complex tool paths typical of multitasking programs. The OSP-P300L control handles both turning and milling programming in a single environment.
The VTM-65 competes with the Mazak Integrex e-V, DMG Mori CTX gamma TC, and Doosan Puma VTS series with milling. Pricing runs $350,000-$500,000 new. It targets shops machining complex parts like pump bodies, valve housings, and aerospace structural components that require both heavy turning and precision milling in a single setup.
Full Specifications
| Parameter | Value |
|---|---|
| Max Turning Diameter | 650 mm (25.6 in) |
| Max Workpiece Height | 500 mm (19.7 in) |
| Table Speed Max | 700 RPM |
| Table Power | 30/22 kW (40/30 hp) |
| Table Torque | 600 Nm (443 ft-lb) |
| Milling Spindle Speed | 10,000 RPM |
| Milling Spindle Power | 22/15 kW (30/20 hp) |
| Milling Spindle Taper | CAT 40 (BT 40) |
| B Axis Range | -30° to +120° |
| X Axis Travel | 500 |
| Y Axis Travel | 350 mm (13.8 in) |
| Z Axis Travel | 635 |
| Tool Capacity | 32 (options: 40, 60, 80) |
| Max Table Load | 500 kg (1,102 lb) |
| Rapid Traverse Rate | 30 m/min (X, Y, Z) |
| CNC Control | Okuma OSP-P300L |
| Max Cutting Diameter | Ø650 |
| Max Cutting Length | 635 |
| Rapid Traverse X | 18 |
| Rapid Traverse Z | 20 |
| Max Spindle Speed | min⁻¹ |
| Spindle Motor Power | 30/22 |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Spindle Speed | 10~1,250 |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- True milling spindle with B-axis tilt and Y-axis eliminates secondary operations that would require a separate machining center
- 10,000 RPM milling spindle with CAT 40 taper provides genuine machining center capability, not just driven turret tools
- B-axis tilting from -30 to +120 degrees enables angled drilling, contouring, and 5-axis-like positioning with C-axis rotation
- 32-80 tool ATC provides the tool library depth needed for complex multitasking parts without stopping to change tools manually
- Thermo-Friendly Concept compensates for heat from both turning and milling operations across different areas of the structure
- Single-setup machining of complex parts reduces fixturing costs, work-in-process inventory, and the dimensional errors introduced by multiple setups
Limitations
- 700 RPM maximum table speed limits turning surface footage on smaller-diameter parts where a conventional lathe would spin faster
- CAT 40 milling spindle is lighter-duty than CAT 50 for aggressive milling in hardened steel or heavy roughing with large-diameter cutters
- OSP control requires programming both turning and milling operations, which adds complexity compared to dedicated single-purpose machines
- Higher purchase cost than a standalone vertical lathe plus a separate VMC, though total cell cost may be lower when fixturing and floor space are considered
Best For
Frequently Asked Questions
01
A new VTM-65 typically runs $350,000-$500,000 depending on milling spindle speed options, tool magazine capacity, and automation peripherals. While more expensive than a standalone vertical lathe, the total cell cost is often lower than a separate lathe plus machining center when fixturing, floor space, and WIP costs are included.
02
Both are vertical turning-milling centers with tilting milling spindles. The Mazak Integrex e-V series uses a MAZATROL SmoothAi control with conversational programming, while the Okuma uses OSP. Okuma's Thermo-Friendly Concept is a differentiator for thermal accuracy. The Mazak typically offers higher milling spindle speeds in its upper options. Both machines target the same applications.
03
For parts that require both turning and milling features, yes. The VTM-65's turning capability handles OD/ID turning, facing, and grooving, while the milling spindle with B-axis handles drilling, tapping, boring, and contour milling. The trade-off is that a dedicated VMC may be faster for pure milling work, and a dedicated VTL may be faster for pure turning.
04
The B-axis tilts the milling spindle from -30 to +120 degrees. This enables angled drilling, chamfering at compound angles, and contouring on angled surfaces without refixturing. Combined with C-axis table rotation, the B-axis provides 5-axis positioning capability for complex part geometries.
05
The standard ATC holds 32 tools with options for 40, 60, or 80 positions. Complex multitasking parts often use 20-30 tools for combined turning and milling operations, so the 32-tool standard covers many applications. Shops running multiple part numbers without changeover should consider the 60 or 80-tool option.
Videos
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Community Discussions
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