Okuma MCR-AF

$500,000 - $800,000 Updated 2026-03-13

Key Specifications

Max Spindle

8,000 RPM

Tool Capacity

24 tools

Spindle Power

26/22 [37/26, 22/18.5, 30/22, 15/11]

effective gate width

2,600 mm (102.4 in)

table work surface

2,000 x 1,500 mm or 2,000 x 2,000 mm

spindle drive

Direct gearless drive

Overview

The Okuma MCR-AF is a compact double-column (gantry-type) machining center designed for high-rigidity milling of medium-sized parts where precision and surface finish are paramount. With an effective gantry width of 2,600 mm and table work surfaces of 2,000 x 1,500 mm or 2,000 x 2,000 mm, the MCR-AF occupies the space between standard vertical machining centers and large bridge mills, targeting shops that need double-column rigidity without the footprint of a full-scale MCR-S.

The 8,000 RPM spindle produces 26 kW (35 hp) at 30-minute rating and 22 kW (30 hp) continuous, channeling power through a direct gearless drive that eliminates gear-induced vibration for superior surface finish. Rapid traverse rates are 20 m/min on X and Y axes with 10 m/min cutting feed capability. The dual ball screw Z-axis drive with absolute scale achieves straightness of 0.003 mm per 800 mm of travel, making the MCR-AF particularly well-suited for die finishing and precision surface work.

Tool storage holds 24 tools standard. The machine runs on Okuma's OSP control with integrated Thermo-Friendly Concept, Anti-Crash System, Process Navi, and Servo Navi technologies. Machine dimensions range from 5,560 x 4,200 x 4,670 mm to 5,560 x 5,230 x 4,670 mm depending on table configuration.

The MCR-AF competes with machines like the Mazak VTC series, DMG Mori DMC V series, and Hyundai Wia KBN series in the compact double-column segment. Okuma differentiates on the dual ball screw Z-axis design delivering exceptional straightness and the Thermo-Friendly Concept for thermal stability during extended finish passes. New MCR-AF machines typically price in the $500,000 to $800,000 range. The MCR-AF is ideal for die and mold finishing, aerospace panel machining, and any application where Z-axis straightness directly impacts part quality. Specs sourced from Okuma Corporation published data.

Full Specifications

Parameter	Value
Effective Gate Width	2,600 mm (102.4 in)
Table Work Surface	2,000 x 1,500 mm or 2,000 x 2,000 mm
Max Spindle Speed	8,000 RPM
Spindle Motor Power	26/22 [37/26, 22/18.5, 30/22, 15/11]
Spindle Drive	Direct gearless drive
Rapid Traverse Xy	20 m/min (787 ipm)
Cutting Feed Max	10 m/min (394 ipm)
Z Axis Straightness	0.003 mm / 800 mm
Z Axis Drive	Dual ball screw with absolute scale
Tool Capacity	24 tools
CNC Control	Okuma OSP-P500M
Machine Dimensions Small	5,560 x 4,200 x 4,670 mm (W x D x H)
Machine Dimensions Large	5,560 x 5,230 x 4,670 mm (W x D x H)
Spindle Cooling	Spindle cooler standard equipped
Width Between Columns	2,600
Table Travel	2,600
Spindle Range	8,000 [12,000, 15,000, 25,000]
Rapid Traverse Rate X Y Z	20 / 10
Okuma Global Repair Center	Charlotte, North Carolina
Inches	Metric
Magazine Capacity	24 [32, 48, 50, 72, 100]

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

Strengths & Limitations

Strengths

Dual ball screw Z-axis drive achieves 0.003 mm straightness per 800 mm of travel, delivering exceptional surface finish quality for die finishing and precision surface work
Direct gearless spindle drive eliminates gear-induced vibration, producing smoother surface finishes compared to geared spindle machines in the same class
Compact double-column design provides bridge mill rigidity in a smaller footprint than full-scale MCR-S or competing large bridge mills
Thermo-Friendly Concept maintains dimensional accuracy across extended finish passes without requiring climate-controlled shop environments
Integrated Anti-Crash System protects against costly collisions during complex die and mold finishing operations with tight clearances
Two table size options (1,500 mm and 2,000 mm length) allow shops to right-size the machine for their typical workpiece envelope

Limitations

8,000 RPM maximum spindle speed is lower than competing machines offering 12,000-15,000 RPM, limiting high-speed finishing capability on aluminum
24-tool magazine is limited for complex multi-operation work — shops running diverse tooling sets will need frequent tool changes
20 m/min rapid traverse is slow compared to high-speed machining centers, extending non-cutting time on parts requiring many repositioning moves
Table work surface maxes out at 2,000 x 2,000 mm, which may be insufficient for shops needing larger workpiece capacity

Best For

Die and mold finishing shops requiring exceptional Z-axis straightness for high-quality die surfaces without extensive hand polishing Aerospace panel machining where double-column rigidity reduces chatter on thin-wall aluminum and titanium parts Precision fixture and gauge manufacturing where surface finish and geometric accuracy are critical acceptance criteria Shops upgrading from C-frame VMCs that need bridge-mill rigidity but lack floor space for a full-scale double-column machine Medium-volume production of cast iron and steel parts requiring consistent surface quality across long finishing cycles

Frequently Asked Questions

01 What does a new Okuma MCR-AF cost?

New MCR-AF machines typically price between $500,000 and $800,000 depending on table configuration (1,500 mm vs 2,000 mm length) and optional equipment. High-pressure coolant, probing systems, and extended tool magazines add to the base price. Used MCR-AF machines are relatively uncommon on the secondary market but trade in the $200,000-$400,000 range when available.

02 How does the MCR-AF compare to the larger MCR-S?

The MCR-AF is the compact version targeting medium-sized parts, while the MCR-S handles large-scale work. The MCR-AF has a 2,600 mm gate width vs 2,650-3,150 mm on the MCR-S, and table sizes max at 2,000 x 2,000 mm vs 2,500 x 6,500 mm. The MCR-AF runs at 8,000 RPM vs 10,000 RPM on the MCR-S. Choose the MCR-AF when your parts fit within 2,000 mm and you need the rigidity of a double-column design without the massive footprint.

03 Why does the MCR-AF use dual ball screws on the Z-axis?

The dual ball screw Z-axis design distributes cutting forces across two drive points rather than one, reducing deflection and maintaining straightness to 0.003 mm per 800 mm of travel. This is critical for die finishing where Z-axis straightness directly determines surface quality. Single ball screw designs can introduce yaw error under cutting loads, which shows up as step marks on finished surfaces.

04 Is the MCR-AF suitable for roughing operations?

The MCR-AF handles moderate roughing in steel and cast iron thanks to its 26 kW spindle and rigid double-column structure. However, with 8,000 RPM max speed and 24-tool capacity, it is better suited as a finishing machine. Shops doing heavy roughing on large workpieces should consider the MCR-S with its higher spindle speed and torque, or use a separate roughing machine and reserve the MCR-AF for finish passes.

05 What control does the MCR-AF use?

The MCR-AF runs on Okuma's OSP control platform with integrated intelligent technologies: Thermo-Friendly Concept for thermal stability, Anti-Crash System for collision prevention, Process Navi for cutting condition optimization, and Servo Navi for automatic servo parameter tuning. The OSP control supports both conversational (interactive) and G-code programming.