Horizontal Machining

5 Axis
HU -5X Trunnion Series HU-T Table-on-Table Series HU-TS Tilt Spindle Series

4 Axis
HU Series HW Series HPX Series

Vertical Machining

5 Axis
Vertex-5X Series VL-5X Series

3~4 Axis
Vertex Series VU Series VL Series

Jig Borers

3 ~ 5 Axis Vertical

4 & 5 axis Horizontal

Jig Grinders

Thread Grinders




MITSUI SEIKI High Production Machining Center Model HW550A with 550 mm square pallets. Numerically controlled with all standard equipment and features including: Automatic Tool Changer, Automatic Pallet Changer, and high production capability for drilling, boring, tapping, and reaming. Integrated circuit logic, closed loop, complete with electrical equipment for operation on: 3-phases, 50/60Hz, 200/220 Volts AC.


Working Capacity
Table longitudinal stroke (X axis) 750 mm (29.53")
Spindle head vertical stroke (Y axis) 800 mm (31.50")
Column travel stroke (Z axis) 850 mm (33.46")
Distance from table surface to spindle axis 50 - 850 mm (1.96" - 33.46")
Distance from spindle nose to table center 150 - 1000 mm (5.9" - 39.37")
Interference of whole machine cover with work piece on pallet
In machine 850mm diameter (Ø 33.46")
In two station automatic pallet changer (2 APC) 1000mm diameter (Ø 39.37")
Feed Rate (X, Y, Z and B axes)
Rapid traverse
X, Y and Z axes 60,000 mm/min (2,362 ipm)
B axis (0.001º table-option) 40 RPM
Cutting feed
X, Y and Z axes 0.1~30,000 mm/min (3.93 ~ 1,181 IPM)
B axis 0.1~4,000º / min
Minimum Resolution
X, Y and Z axes 0.001 mm (0.00004")
B axis 1º (0.001º option)
Position Transducer
X, Y and Z axes Linear scale feedback system (Precision glass scale /standard)
B axis Large diameter curvic coupling
Option 0.001º table: High Precision
digital rotary encoder
Power Required
Electrical Service Required AC 220/200V 3 phase 50/60HZ, 52 KVA
Air Required
Air Service Required 0.4 - 0.57 Mpa 900 NL/min (Dry and clean air)
Air Required
Air Service Required 0.4 - 0.57 Mpa 900 NL/min (Dry and clean air)
Machine Dimensions
(Standard machine, includes 2 APC and chip conveyor)
Length 7,000 mm (275 in)
Width 3,200 mm (126 in)
Height 3,100mm (122")
Height to table surface from floor 1,200mm (47.25")
Height of table surface from floor with optional T-slot pallets 1,200mm
(47.25") 1,230 mm(48.42")
Machine Weight 16,000 kg. (35,273 lbs)
Floor space
(Includes front APC and maintenance space)
Length 8m (26.25 ft.)
Width 4.5m (15 ft.)
Numerical Control Equipment
CNC Control Fanuc 31i (Fanuc 30i is optional)