Okuma MILLAC 853PF 5X
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Okuma MILLAC 853PF 5X is a large-format 5-axis profiling machining center designed for long, flat parts that need simultaneous 5-axis machining. The PF designation signals profiling capability, and the machine architecture features a large fixed table with a nutating spindle head that provides the A-axis and C-axis rotary motion. This is fundamentally different from trunnion-table machines, as the workpiece stays stationary while the spindle tilts and rotates.
Travel measures 3,000 x 850 x 560 mm (118.1 x 33.5 x 22.0 in) on the linear axes. The 3,000 mm X-axis stroke is the defining feature of this machine, enabling it to handle long aerospace wing skins, structural rails, door frames, and similar parts that simply won't fit on a standard 5-axis VMC. The A-axis tilts +/- 30 degrees and the C-axis rotates 360 degrees continuously from the spindle head.
The spindle runs at 10,000 RPM with 22/15 kW (30/20 hp) through a No. 50 (BT 50) taper. The table size is 3,200 x 850 mm (126.0 x 33.5 in) with a maximum table load of 2,500 kg (5,512 lb). Rapid traverse hits 40 m/min (1,575 ipm) on X, 40 m/min on Y, and 36 m/min (1,417 ipm) on Z. The large table accommodates both single long workpieces and multiple smaller parts fixtured in a row.
Machine weight is approximately 22,000 kg (48,502 lb) with double-column bridge construction spanning the full table length. The moving crossrail carries the spindle head across the Y and Z axes while the table moves in X under the bridge. This architecture provides consistent rigidity regardless of where the spindle is positioned along the 3,000 mm X-axis travel.
The OSP-P500 control is standard with Thermo-Friendly Concept, Collision Avoidance System, and 5-Axis Auto Tuning. The standard ATC holds 40 tools with options to 60 or 80 positions. Floor space runs approximately 7,500 x 4,000 mm (295 x 157 in).
New pricing typically ranges from $600,000-$850,000 depending on configuration. The MILLAC 853PF 5X competes with machines like the Jobs LinX and Breton Matrix for large-format 5-axis profiling work, though those European competitors tend to be significantly more expensive.
Full Specifications
| Parameter | Value |
|---|---|
| X-Axis Travel | 3,000 mm (118.1 in) |
| Y-Axis Travel | 850 mm (33.5 in) |
| Z-Axis Travel | 560 mm (22.0 in) |
| A Axis Range | +/- 30° (spindle head tilt) |
| C Axis Range | 360° (continuous rotation, spindle head) |
| Max Spindle Speed | min⁻¹ |
| Spindle Taper | No. 50 (BT 50) |
| Spindle Motor Power | 45/55 |
| Tool Capacity | 40 (60, 80 optional) |
| Table Size | mm |
| Max Table Load | 2,500 kg (5,512 lb) |
| Rapid Traverse Xy | 40 m/min (1,575 ipm) |
| Rapid Traverse Z | 36 m/min (1,417 ipm) |
| Machine Weight | 22,000 kg (48,502 lb) |
| Floor Space | 7,500 x 4,000 mm (295 x 157 in) |
| CNC Control | Okuma OSP-P500 |
| Travel X Y Z | 3,050 / 850 / 700 |
| Rapid Traverse Rate | 30 / 30 / 24 |
| Okuma Global Repair Center | Charlotte, North Carolina |
| Inches | Metric |
| Table Dimensions | 3,200 x 850 |
| Spindle Speed | 60~12,000 |
| Magazine Capacity | 30 |
Specifications sourced from okuma.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 3,000 mm X-axis travel handles long aerospace wing skins, structural rails, and door frames that won't fit on any standard 5-axis VMC with a trunnion table
- Nutating spindle head architecture keeps the heavy workpiece stationary while the spindle provides A and C axis motion, eliminating table tilt limitations on long parts
- 3,200 x 850 mm table with 2,500 kg load capacity supports long fixturing setups and heavy workpieces without weight distribution concerns
- Bridge-type construction with moving crossrail maintains consistent rigidity across the full 3,000 mm X-axis travel, critical for tolerance on long parts
- No. 50 taper spindle provides the tool clamping force needed for large face mills and long-reach tooling common in structural aerospace machining
- Significantly less expensive than European large-format 5-axis profilers while delivering comparable capability for most aerospace and industrial applications
Limitations
- 7,500 x 4,000 mm footprint demands a large dedicated bay with clear overhead crane access along the full machine length
- +/- 30 degree A-axis tilt from the spindle head is more limited than trunnion machines offering +90 to -120 degrees, restricting undercut access
- 10,000 RPM spindle speed is conservative for high-speed aluminum profiling where aerospace shops often run 15,000-24,000 RPM on aluminum wing skins
- Profiling architecture with a nutating head creates programming complexity compared to standard trunnion 5-axis machines, requiring specialized post processors
- 22,000 kg machine weight requires a reinforced foundation across the full machine length, increasing installation cost and lead time
Best For
Frequently Asked Questions
01
New pricing ranges from $600,000-$850,000 depending on spindle options, tool magazine capacity, and automation features. This positions it as a more affordable alternative to European large-format 5-axis profilers from brands like Jobs and Breton, which can exceed $1,000,000 for similar capability.
02
A profiling center like the MILLAC 853PF 5X uses a nutating spindle head to provide the rotary axes while the workpiece stays on a fixed table. Standard 5-axis VMCs typically use a trunnion that tilts the workpiece. Profiling centers handle much longer parts because they don't need to rotate or tilt the workpiece, but they typically have more limited A-axis tilt range.
03
Yes. The A and C axes on the spindle head plus the three linear axes provide full simultaneous 5-axis interpolation. The +/- 30 degree A-axis tilt limits the tilt angle compared to trunnion machines, but for the profiling work this machine is designed for, the spindle head angles are adequate for most complex surface machining.
04
Completely different machines for different applications. The 800VH uses a rotary table to position parts under a vertical spindle for heavy 5-axis work on compact parts. The 853PF 5X uses a nutating spindle head to machine long parts on a fixed table. The 800VH handles heavier tilt angles; the 853PF 5X handles much longer parts. Choose based on part geometry.
05
For many aerospace structural components, yes. Wing ribs, door frames, floor beams, and bulkhead sections typically fall within this envelope. For full-length wing skins or very large fuselage panels, shops typically use dedicated gantry machines with 6,000+ mm travel. The MILLAC 853PF 5X fills the gap between standard 5-axis VMCs and those large gantry systems.
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