The MITSUI SEIKI HU40A is a high-precision horizontal machining center engineered for ultra-accurate machining applications requiring exceptional rigidity, thermal stability, and long-term repeatability. Manufactured in Japan by Mitsui Seiki, the HU40A is widely respected in aerospace, medical, semiconductor, mold & die, automotive, and precision industrial manufacturing industries. The machine is designed to deliver superior machining accuracy while maintaining high-speed productivity in demanding production environments.
The HU40A features a rigid machine structure combined with advanced spindle technology and precision guideway systems that minimize vibration and thermal distortion during machining operations. Its horizontal spindle configuration allows efficient chip evacuation, improving tool life and maintaining stable cutting conditions during extended production cycles. The machine is especially suitable for machining complex aluminum, steel, titanium, stainless steel, and high-performance alloy components requiring tight tolerances and superior surface finishes.
One of the major strengths of the MITSUI SEIKI HU40A is its thermal stability and precision positioning capability. The machine incorporates advanced cooling systems, precision ballscrews, and high-resolution feedback systems that help maintain micron-level accuracy over long machining cycles. Its compact horizontal design and high-speed pallet changing systems also improve spindle utilization and production efficiency.
The HU40A is commonly equipped with FANUC CNC controls, high-speed spindles, automatic pallet changers, through-spindle coolant systems, and large-capacity tool magazines for automated production environments. The machine is frequently used for aerospace structures, hydraulic components, precision housings, medical devices, and semiconductor equipment parts. Its combination of high-speed machining, exceptional precision, and long-term reliability makes the MITSUI SEIKI HU40A one of the most desirable precision horizontal machining centers in advanced manufacturing industries.
MITSUI SEIKI HU40A SPECIFICATIONS
MITSUI SEIKI HU40A – AXIS
Number of Axes
4-Axis Horizontal Machining Center
Axis Configuration
X, Y, Z, B
Simultaneous Control
4-Axis
Rotary Axis Type
CNC Rotary Pallet
Positioning Accuracy
Ultra Precision
Repeatability
Exceptional
MITSUI SEIKI HU40A – AXIS TRAVELS
X-Axis Travel
630 mm
Y-Axis Travel
650 mm
Z-Axis Travel
710 mm
B-Axis Rotation
360° Continuous
Rapid Traverse Rate
50 – 60 m/min
Guideway Type
Precision Linear Guideways
MITSUI SEIKI HU40A – CAPACITY
Maximum Workpiece Diameter
800 mm
Maximum Workpiece Height
900 mm
Maximum Workpiece Weight
400 kg
Pallet Capacity
Dual Pallet System
Production Type
Precision High-Speed Machining
Material Capability
Steel, Titanium, Aluminum
MITSUI SEIKI HU40A – SPINDLE
Standard Spindle Speed
14,000 RPM
Optional Spindle Speed
20,000 RPM
Spindle Motor Power
Approx. 22 – 30 kW
Spindle Taper
BT40 / HSK63
Spindle Type
High-Speed Built-In
Thermal Stabilization
Advanced Cooling System
MITSUI SEIKI HU40A – TABLE
Pallet Size
400 x 400 mm
Maximum Table Load
400 kg
Table Indexing
0.001° Increment
Automatic Pallet Changer
Yes
Number of Pallets
2 Standard
Table Construction
Precision Rotary Table
MITSUI SEIKI HU40A – TOOL TURRET
Tool Magazine Capacity
60 Standard
Optional Tool Capacity
Up to 240 Tools
Tool Change System
Automatic
Tool Change Time
High-Speed
Maximum Tool Diameter
170 mm
Maximum Tool Weight
12 kg
MITSUI SEIKI HU40A – FEEDRATES
X-Axis Rapid Feed
50 – 60 m/min
Y-Axis Rapid Feed
50 – 60 m/min
Z-Axis Rapid Feed
50 – 60 m/min
Cutting Feed Rate
Programmable
Servo System
Digital AC Servo
High-Speed Positioning
Yes
MITSUI SEIKI HU40A – COOLANT & CHIP MANAGEMENT
Through Spindle Coolant
Available
Coolant Pressure
High Pressure Optional
Chip Conveyor
Standard
Coolant Filtration
Integrated
Chip Removal System
Automatic
Continuous Production Capability
Yes
MITSUI SEIKI HU40A – CONTROL SYSTEM
CNC Control Brand
FANUC
CNC Models
FANUC 30i / 31i
Conversational Programming
Supported
Networking Capability
Ethernet
Automation Integration
Yes
Advanced Machining Functions
High-Speed Processing
MITSUI SEIKI HU40A – POWER & AIR REQUIREMENTS
Power Requirement
Industrial 3-Phase
Voltage
200V / 220V / 400V
Air Pressure Requirement
Standard Shop Air
Pneumatic Requirement
Yes
Frequency
50 / 60 Hz
Connected Load
Industrial Production
MITSUI SEIKI HU40A – DIMENSIONS
Machine Length
Approx. 4000 – 5000 mm
Machine Width
Approx. 2600 – 3200 mm
Machine Height
Approx. 3000 mm
Machine Weight
Approx. 9000 – 12000 kg
Floor Space Requirement
Medium Industrial Footprint
Shipping Weight
Approx. 13000 kg
MITSUI SEIKI HU40A – GENERAL INFORMATION
Machine Type
Horizontal Machining Center
Manufacturer
Mitsui Seiki
Country of Origin
Japan
Machine Construction
Precision Rigid Structure
Production Environment
High-Precision Manufacturing
Automation Ready
Yes
INDUSTRIES THAT USE MITSUI SEIKI HU40A
Aerospace
Precision Structural Components
Medical
High-Accuracy Components
Semiconductor
Equipment Parts
Automotive
Precision Production Parts
Mold & Die
Complex Machining
Industrial Manufacturing
High-Tolerance Components
TYPICAL PARTS MITSUI SEIKI HU40A CAN PRODUCE
Aerospace Housings
Yes
Hydraulic Components
Yes
Semiconductor Parts
Yes
Medical Components
Yes
Precision Castings
Yes
Industrial Assemblies
Yes
WHY CHOOSE MITSUI SEIKI HU40A
Precision Accuracy
Exceptional
Thermal Stability
Excellent
Surface Finish Quality
Superior
High-Speed Productivity
High
Automation Capability
Advanced
Long-Term Reliability
Excellent
WHY BUY USED MITSUI SEIKI HU40A
Purchasing a used MITSUI SEIKI HU40A is an excellent option for manufacturers seeking ultra-precision horizontal machining capability without the substantial investment associated with purchasing a new machine. The HU40A is highly respected for its exceptional machining accuracy, thermal stability, and long-term repeatability, making it one of the most desirable horizontal machining centers for aerospace, medical, semiconductor, and precision industrial manufacturing applications.
One of the biggest advantages of buying a used HU40A is reduced capital expenditure while still gaining access to advanced Japanese precision machining technology. New precision horizontal machining centers equipped with high-speed spindles, pallet changers, and automation systems can require a significant financial investment. Many used HU40A machines already include valuable options such as through-spindle coolant systems, probing packages, large-capacity tool magazines, and advanced automation accessories, increasing their overall value.
The HU40A is specifically designed for high-accuracy machining environments where thermal stability and positioning precision are critical. Its rigid construction, advanced spindle cooling systems, and precision feedback technology help maintain micron-level tolerances during long production runs. This makes the machine especially suitable for manufacturers producing aerospace structures, medical devices, semiconductor equipment components, and precision industrial assemblies.
Another major benefit of purchasing a used HU40A is faster machine availability. New high-end precision machining centers often involve long manufacturing lead times, while used machines can frequently be inspected, delivered, and installed much faster. This allows manufacturers to expand production capacity quickly and reduce delays in customer projects.
The machine also maintains strong resale value because of Mitsui Seiki’s global reputation for precision engineering, reliability, and long-term durability. Many used units are available with upgraded FANUC controls, tooling packages, and automation systems already installed, simplifying integration into existing production facilities.
HOW MUCH DOES A USED MITSUI SEIKI HU40A COST?
MACHINE AGE / CONDITION
ESTIMATED PRICE RANGE (USD)
Before 2005 Models
$60,000 – $150,000
2005 – 2010 Models
$150,000 – $300,000
2010 – 2015 Models
$300,000 – $600,000
2015 – 2020 Models
$600,000 – $1,200,000
2020 – 2025 Models
$1,200,000 – $2,500,000+
Low Cutting Hours Machines
Premium Pricing
Medium Production Usage
Standard Market Value
High Production Usage
Lower Market Value
Refurbished Machines
20% – 40% Higher
Fully Tooled Machines
Additional $15,000 – $100,000
The price of a used MITSUI SEIKI HU40A depends on several important factors including manufacturing year, spindle hours, machine condition, tooling package, automation capability, and maintenance history. Older machines manufactured before 2005 are generally the most affordable and are commonly purchased by precision machine shops seeking premium horizontal machining capability at a lower acquisition cost. These machines typically range between $60,000 and $150,000 depending on condition and included accessories.
Machines manufactured between 2005 and 2015 remain highly desirable because they combine modern FANUC CNC controls, advanced thermal stabilization systems, high-speed spindle technology, and automation capability. Many of these machines include pallet changers, probing systems, through-spindle coolant packages, and expanded tool capacities. Pricing for these models commonly ranges between $150,000 and $600,000 depending on spindle usage and overall machine condition.
Newer MITSUI SEIKI HU40A machines manufactured after 2015 command significantly higher prices because of lower operating hours, enhanced spindle performance, improved servo systems, and upgraded automation technology. Late-model machines equipped with advanced probing systems, expanded tool magazines, and high-speed spindle packages can exceed $2.5 million on the used market.
Cutting time and production environment strongly influence resale value. Machines used in continuous aerospace, medical, or semiconductor production environments generally command higher prices when maintenance records and calibration histories are properly maintained. Refurbished machines with rebuilt spindles, verified geometry, upgraded controls, and updated automation systems often command premium pricing. Additional tooling packages, coolant systems, probing systems, and pallet automation systems can substantially increase the overall market value of the machine.