Toshiba FMB-2000

$3,000,000 - $8,000,000+ Updated 2026-03-16

Key Specifications

Spindle Power

55 kW (73.8 hp)

Accuracy

± 0.012 mm

spindle diameter

200 mm (7.9 in)

spindle speed

1 - 1,000 RPM

x axis floor travel

Up to 20,000 mm (787 in)

y axis vertical travel

5,000 mm (197 in)

Overview

The Toshiba FMB-2000 is a floor-type CNC horizontal boring and milling machine — the floor-type (FB) variant of Toshiba Machine's large-format boring mill series. Where table-type boring mills (MPC-T) rotate the workpiece under a stationary column, floor-type machines move the machine column on floor rails while the workpiece is mounted directly on the shop floor or on a stationary table. This configuration is essential for workpieces too large, too heavy, or too awkwardly shaped to be mounted on a rotary table — turbine casings, large ship sections, mining equipment frames, and heavy structural components for offshore platforms.

The FMB-2000 features a 200 mm (7.9 in) boring spindle capable of 55 kW (73.8 hp) at up to 1,000 RPM. The W-axis (spindle quill) extends 1,500 mm to reach deep bores without retracting the column. Floor-rail travel extends to 20,000 mm or more in X (along the floor rails), with Y-axis (vertical column travel) up to 5,000 mm and Z-axis (column along the crossrail) providing full face coverage of very large workpieces. The rotary facing and boring head (PAL) option enables precise large-diameter facing and boring to 3,000 mm diameter without the workpiece having to rotate.

Floor boring mills are the primary machining resource for large power plant turbine and compressor overhaul. Utility and industrial service companies that repair and refurbish large steam turbine casings, compressor casings, and large industrial gearbox housings rely on floor boring mills for machining operations that cannot be done on any other machine type. The FMB-2000's 200mm spindle diameter handles the heavy boring bars required for large diameter boring operations on these massive components.

At $3,000,000-$8,000,000 depending on bed length, vertical travel, and options, the FMB series is a strategic capital investment. Major turbine manufacturers (GE, Siemens, MHI), shipyards, and heavy engineering companies are the primary buyers.

Full Specifications

Parameter	Value
Spindle Diameter	200 mm (7.9 in)
Spindle Speed	1 - 1,000 RPM
Spindle Motor Power	55 kW (73.8 hp)
X Axis Floor Travel	Up to 20,000 mm (787 in)
Y Axis Vertical Travel	5,000 mm (197 in)
Z Axis Cross Travel	2,000 mm (78.7 in)
W Axis Quill	1,500 mm (59 in)
Facing Boring Head	PAL type (up to 3,000 mm diameter)
Positioning Accuracy	± 0.012 mm
CNC Control	Fanuc 30iM / Siemens 840D sl
Machine Weight	~350,000 kg (771,617 lb) complete system

Strengths & Limitations

Strengths

Floor-rail configuration enables machining of workpieces too large for table-type boring mills — no workpiece size limit in X
200mm spindle diameter handles the largest boring bar assemblies for deep, large-diameter bores in turbine casings
20,000+ mm floor travel covers the full length of large ship sections, turbine casings, and structural assemblies
PAL facing head enables precision facing and boring to 3,000mm diameter without workpiece rotation
1,500mm W-axis quill extension reaches deep bores without retraction of the full column assembly

Limitations

$3M-$8M+ investment requires sustained heavy industrial machining volume to justify
Installation is a major construction project — floor rails require deep concrete foundations and precision alignment
Machine footprint is enormous — typically requires a dedicated bay with overhead crane and controlled environment
Floor boring mills require highly skilled programmers and operators — specialized large-part machining expertise is rare

Best For

Power generation manufacturers machining steam turbine casings, large compressor housings, and generator frame sections Shipyards and marine manufacturers machining large ship sections, propulsion system components, and offshore platform structures Industrial service companies that refurbish and repair large turbine casings and heavy industrial machinery on-site or in their facility Nuclear equipment manufacturers machining reactor vessel heads, large steam generator components, and heavy pressure vessel flanges Defense and aerospace prime contractors machining large tooling fixtures, jig bodies, and structural components for aircraft assembly

Frequently Asked Questions

01 What is the difference between floor-type and table-type horizontal boring mills?

Table-type boring mills (like the Toshiba MPC-T) mount the workpiece on a rotary indexing table — the table rotates to present different faces, and the machine column is stationary or moves only in X and Y. Floor-type boring mills (like the FMB-2000) have no workpiece table — the workpiece is bolted to the shop floor, and the machine column travels on floor-mounted rails in X. The column also travels in Y (vertical) and Z. Floor-type is used for workpieces too large, heavy, or geometrically complex to mount on a table. Table-type is more common for workpieces under 30-50 tons that can be mounted and rotated.

02 How large of a bore can the FMB-2000 machine?

The FMB-2000 with the PAL rotary facing and boring head can bore and face to approximately 3,000 mm (about 10 feet) diameter. This covers the largest steam turbine casing bores, large compressor casing bores, and large-diameter pressure vessel flange facing operations. Boring bars on the main 200mm spindle can bore to approximately 500-600mm diameter depending on bar length and rigidity. For bores beyond 600mm, the PAL boring head or line-boring bar arrangements are used.

03 Can the FMB-2000 be used for field (on-site) machining?

No — the FMB-2000 is a permanent shop floor installation. For on-site machining of in-situ components (machining turbine casing flanges in place at a power plant during a turnaround), specialized portable line boring machines and flange facing machines are used. Toshiba Machine's FMB-2000 and similar floor boring mills are shop-based machines requiring permanent installation with floor rails, power infrastructure, and environmental controls. Workpieces must be transported to the machine facility.