Yamazaki Mazak Vertical Machining Centers

Mazak FJV-250II

$350,000 - $550,000 Updated 2026-03-19

Key Specifications

X Travel

2,540 mm (100 in)

Y Travel

1,270 mm (50 in)

Z Travel

510 mm (20.1 in)

Max Spindle

6,000 RPM

Spindle Taper

BT 50

Tool Capacity

30 (arm-type ATC)

Overview

The Mazak FJV-250II is a bridge-type double-column vertical machining center from the FJV BT50 family, designed for heavy-duty machining of large prismatic workpieces. The "250" designation refers to the approximate 2,500 mm X-axis travel, making this the largest member of the FJV BT50 series and one of Mazak's biggest bridge-type VMCs short of the VERSATECH platform.

Axis travels measure 2,540 x 1,270 x 510 mm (100 x 50 x 20.1 in), providing a massive work envelope suited to long structural parts, large mold bases, and oversized die plates. The bridge construction distributes cutting forces symmetrically through dual columns, maintaining rigidity even during heavy roughing at full Y-extension where C-frame machines would deflect.

The BT 50 spindle delivers 30 kW (40 hp) at up to 6,000 RPM, providing the torque necessary for aggressive face milling, boring, and pocket roughing in steel, cast iron, and tool steels. The lower RPM compared to the smaller FJV variants reflects the focus on torque-intensive large-part work rather than high-speed finishing. Table load capacity reaches 5,000 kg (11,023 lb) for heavy workpieces.

The 30-station arm-type ATC handles BT 50 tooling. Rapid traverse reaches 30 m/min across all axes. The MAZATROL SmoothG CNC provides conversational programming alongside full G-code capability, with 3D simulation for collision avoidance on large-envelope work.

Competitors include the SNK RB-5VM, Toshiba MPF series, Johnford DMC-3100, and Pama Speedmat. New FJV-250II machines price between $350,000 and $550,000. Used units from 1998-2015 trade between $80,000 and $200,000, offering significant value for shops needing bridge-type capacity.

Full Specifications

Parameter	Value
X-Axis Travel	2,540 mm (100 in)
Y-Axis Travel	1,270 mm (50 in)
Z-Axis Travel	510 mm (20.1 in)
Max Spindle Speed	6,000 RPM
Spindle Taper	BT 50
Spindle Motor Power	30 kW (40 hp)
Tool Capacity	30 (arm-type ATC)
Table Size	157.48" × 78.74"
Max Table Load	5,000 kg (11,023 lb)
Rapid Traverse Rate	30 m/min (1,181 ipm)
Machine Type	Bridge-type double-column construction
CNC Control	MAZATROL SmoothG CNC
Guide Type	Linear roller guides
Machine Weight	22,000 kg (48,502 lb) approx.
Motor Output	30 min. rating [40%ED]
Cont Rating	239 N・m (176 ft･lbs)
Motor Torque	30 min. rating [40%ED]
Tool Shank	CAT No.50
Max Spindle Speed	10000 min-1(rpm)

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

Strengths & Limitations

Strengths

2,540 mm X-travel provides one of the largest work envelopes in Mazak's VMC lineup, accommodating long structural parts and oversized mold bases in a single setup
Bridge construction with dual columns eliminates cantilever deflection, maintaining rigidity across the entire 100-inch X-travel during heavy cuts
BT 50 taper with 30 kW spindle delivers the torque needed for aggressive roughing with large face mills and boring bars in steel and cast iron
5,000 kg table load capacity handles heavy die plates, mold bases, and structural weldments without deflection concern
Symmetric force distribution through the bridge produces consistent surface finish and tolerance holding across the full envelope
Strong used market makes large-envelope bridge machining accessible at significantly lower cost than buying new

Limitations

22,000 kg machine weight requires substantial foundation preparation and significant floor space commitment
6,000 RPM spindle speed is optimized for torque rather than speed, limiting high-speed aluminum finishing capability
Starting at $350,000, the FJV-250II represents a major capital investment versus smaller C-frame VMCs
Large footprint requires dedicated bay space that many smaller shops cannot accommodate

Best For

Mold and die shops machining oversized mold bases, large die shoes, and press tooling in P20 and H13 tool steels Aerospace manufacturers machining long structural components, wing ribs, and bulkheads requiring extended X-travel Heavy equipment manufacturers producing large steel weldments, base plates, and structural frames Energy sector shops machining large valve bodies, turbine casings, and generator frames in steel and cast iron Shipbuilding and defense contractors machining large prismatic components that exceed the capacity of standard VMCs

Frequently Asked Questions

01 What does a Mazak FJV-250II cost?

New FJV-250II machines range from $350,000 to $550,000 depending on configuration and options. Used units from 1998-2015 trade between $80,000 and $200,000, with price heavily dependent on control generation and machine condition.

02 How does the FJV-250II compare to the FJV BT50?

The FJV-250II is the large-format variant of the FJV BT50 family. While both share BT 50 spindle capability and bridge construction, the 250II doubles the X-travel to 2,540 mm (100 in) and increases Y-travel to 1,270 mm (50 in), providing a much larger work envelope for oversized parts. The tradeoff is a larger footprint, heavier machine weight, and higher cost.

03 What foundation does the FJV-250II require?

At approximately 22,000 kg, the FJV-250II requires a reinforced concrete foundation, typically 250-300 mm (10-12 in) thick with proper isolation from neighboring equipment. The large footprint means the foundation area is substantial. Consult Mazak installation specifications for exact requirements based on your soil conditions.

04 Can the FJV-250II machine aluminum efficiently?

The FJV-250II can machine aluminum, but its 6,000 RPM spindle speed is optimized for heavy cutting in steel and cast iron rather than high-speed aluminum work. For aluminum roughing with large face mills, the machine performs well. For high-speed aluminum finishing, a higher-RPM machine would be more productive.