Okuma VTM-100

$550,000 - $800,000 Updated 2026-03-13

Key Specifications

Max Spindle

min⁻¹

Tool Capacity

40 (options: 60, 80, 120)

Rapid Traverse

24 m/min (X, Y, Z)

Spindle Power

30/22

max turning diameter

1,000 mm (39.4 in)

max workpiece height

750 mm (29.5 in)

Overview

The Okuma VTM-100 is a large-capacity vertical turning and milling center that scales up the VTM platform to handle workpieces up to 1,000 mm (39.4 in) diameter and 750 mm (29.5 in) height. It brings genuine multitasking capability to the large-part vertical turning segment, combining a powerful table spindle with a tilting milling spindle to consolidate turning and milling operations that would otherwise require two or three separate machines.

The table spindle delivers 45/37 kW (60/50 hp) at up to 500 RPM with 1,200 Nm (885 ft-lb) of torque, providing the muscle needed for deep roughing in large castings and forgings. Maximum table load is 1,500 kg (3,307 lb), covering the majority of large-diameter applications in energy, aerospace, and heavy equipment manufacturing. The chuck capacity extends to 30 inches (762 mm).

The milling spindle runs up to 10,000 RPM with 30/22 kW (40/30 hp) through a CAT 50 taper, delivering full-size machining center capability for drilling, boring, tapping, and contour milling. The B-axis tilts from -30 to +120 degrees for angled operations. X-axis travel is 750 mm (29.5 in), Y-axis is 450 mm (17.7 in), and Z-axis is 750 mm (29.5 in). The ATC holds 40 tools standard with options up to 120.

Okuma's Thermo-Friendly Concept is critical on a machine this large, where thermal growth across the massive casting can shift tolerances by tens of microns during multi-hour cycles. Collision Avoidance System models the entire machine envelope in 3D, essential when the milling spindle is operating near a large workpiece clamped on the table.

The VTM-100 competes with the Mazak Integrex e-800V, DMG Mori CTX gamma 3000 TC, and Doosan Puma VTS1620M. Pricing runs $550,000-$800,000 new. Machine weight is approximately 28,000 kg (61,729 lb). The machine targets energy, oil and gas, aerospace, and heavy equipment shops that need to turn and mill large complex parts in a single setup.

Full Specifications

Parameter	Value
Max Turning Diameter	1,000 mm (39.4 in)
Max Workpiece Height	750 mm (29.5 in)
Table Speed Max	500 RPM
Table Power	45/37 kW (60/50 hp)
Table Torque	1,200 Nm (885 ft-lb)
Milling Spindle Speed	10,000 RPM
Milling Spindle Power	30/22 kW (40/30 hp)
Milling Spindle Taper	CAT 50
B Axis Range	-30° to +120°
X Axis Travel	650
Y Axis Travel	450 mm (17.7 in)
Z Axis Travel	840
Tool Capacity	40 (options: 60, 80, 120)
Max Table Load	1,500 kg (3,307 lb)
Rapid Traverse Rate	24 m/min (X, Y, Z)
Machine Weight	28,000 kg (61,729 lb)
CNC Control	Okuma OSP-P300L
Max Cutting Diameter	Ø1,000
Max Cutting Length	840
Rapid Traverse X Y	16
Rapid Traverse C	20
Max Spindle Speed	min⁻¹
Spindle Motor Power	30/22
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Spindle Speed	13~1,250

Specifications sourced from okuma.com — verified 2026-03-28

Strengths & Limitations

Strengths

1,000 mm turning diameter with 1,500 kg table load handles the large castings and forgings common in energy and heavy equipment manufacturing
CAT 50 milling spindle provides full-size machining center capability for heavy boring and milling, not just light-duty driven tools
B-axis tilting milling spindle eliminates refixturing for angled features, reducing setup time and improving positional accuracy
1,200 Nm table torque enables deep roughing passes in large-diameter cast iron and alloy steel without vibration
Thermo-Friendly Concept is essential on this size machine where thermal growth can shift tolerances significantly during long cycles
Single-setup capability for turning and milling eliminates the WIP, fixturing, and accuracy loss from transferring large parts between machines

Limitations

500 RPM maximum table speed is appropriate for large diameters but limiting for smaller-diameter work within the machine's envelope
28,000 kg machine weight and large footprint require significant foundation preparation and rigging planning
Capital cost of $550,000-$800,000 limits the machine to shops with consistent large-part volume or high-value components
OSP control is Okuma-proprietary; complex multitasking programs require expertise in combined turning-milling programming
24 m/min rapid traverse is slow compared to lighter machines, adding non-cutting time on tool-intensive jobs

Best For

Energy sector manufacturers machining turbine casings, valve bodies, and large flanged components requiring both turning and milling Oil and gas shops producing wellhead equipment, manifolds, and BOP components with turned and milled features in a single setup Aerospace manufacturers machining large structural rings, housings, and engine casings up to 1,000 mm diameter Heavy equipment producers consolidating turning and milling of large castings to reduce setup count and lead time Job shops replacing a vertical boring mill plus a large HMC with a single multitasking platform for large-part work

Frequently Asked Questions

01 What does an Okuma VTM-100 cost?

A new VTM-100 typically runs $550,000-$800,000 depending on milling spindle options, tool magazine capacity, and automation. While the capital cost is significant, shops that currently run large parts through a VBM and then a separate machining center often find the total cell cost comparable when fixturing, handling, and floor space are factored in.

02 How does the VTM-100 compare to the VTM-65?

The VTM-100 has a 1,000 mm turning diameter versus 650 mm, 1,500 kg table load versus 500 kg, CAT 50 milling taper versus CAT 40, and more powerful table and milling spindles. The VTM-100 is the right choice for large castings and forgings; the VTM-65 is better for medium parts where its smaller footprint and lower cost are advantages.

03 Can the VTM-100 do 5-axis machining?

The VTM-100 provides 5-axis positioning capability through the B-axis (milling spindle tilt) and C-axis (table rotation), combined with X, Y, and Z linear axes. True simultaneous 5-axis contouring depends on the control configuration. For complex 5-axis simultaneous work, a dedicated 5-axis machining center may still be preferred.

04 What is the advantage of CAT 50 over CAT 40 on the milling spindle?

CAT 50 provides larger tool shank diameter for greater rigidity and higher clamping force. This matters for heavy boring, face milling with large-diameter cutters, and deep-hole drilling on the large workpieces the VTM-100 handles. CAT 50 also supports a wider range of heavy-duty tooling systems.