Mitsui Seiki

Year: Newest - Oldest

Mitsui Seiki machines are crafted through a blend of advanced design, engineering, processing, assembly, and measurement skills. A crucial aspect of this process is maintaining an optimal factory environment, particularly concerning temperature control. The skills and knowledge passed down over the past 70 years, combined with the meticulous factory conditions, enable Mitsui Seiki to produce exceptional machines.

In October 2001, Mitsui Seiki's Machine Tools Division relocated from Tokyo's Ota Ward to Kawajima Town in Saitama Prefecture, enhancing its capabilities and commitment to precision.

Throughout its history, Mitsui Seiki has remained dedicated to achieving "the ultimate in precision," a core value that continues to drive the company forward.

MITSUI SEIKI

Mitsui Seiki: Precision Machine Tools

About Mitsui Seiki

From Gauge Blocks to Machining Centers

  • 1928: Mitsui Seiki began its journey by manufacturing measuring instruments, including block gauges and micrometers, marking the start of its pursuit of precision.
  • 1935: The company developed its first medium-sized Jig Boring machine, the "#4," which was Japan's first domestically produced jig boring technology. This machine, often referred to as Japan's first "mother" machine, was essential for other machine tool builders to create precision components. This innovation significantly contributed to the growth of Japan's machine tool industry.
  • Today: Mitsui Seiki's product lineup includes jig boring machines, jig grinders, horizontal and vertical machining centers, 5-axis machining centers, and screw grinders, supporting leading industries worldwide.

Fusion of Ideal Environment and Dexterous Skills

Mitsui Seiki machines are crafted through a blend of advanced design, engineering, processing, assembly, and measurement skills. A crucial aspect of this process is maintaining an optimal factory environment, particularly concerning temperature control. The skills and knowledge passed down over the past 70 years, combined with the meticulous factory conditions, enable Mitsui Seiki to produce exceptional machines.

In October 2001, Mitsui Seiki's Machine Tools Division relocated from Tokyo's Ota Ward to Kawajima Town in Saitama Prefecture, enhancing its capabilities and commitment to precision.

Throughout its history, Mitsui Seiki has remained dedicated to achieving "the ultimate in precision," a core value that continues to drive the company forward.

Product Listing

Horizontal Machining Centers

SeriesModelSize (inches)Speed (rpm)
5 Axis - HU -5X Trunnion Series   
 HU50A-5X19.7 x 19.7 x 17.712,000
 HU63A-5X24.8 x 24.8 x 19.712,000
 HU80A-5X31.5 x 31.5 x 24.810,000
 HU100-5X39.4 x 39.4 x 29.510,000
 HU100-5XL39.4 x 39.4 x 39.410,000
 HU100-5XLL39.4 x 39.4 x 59.110,000
5 Axis - HU-T Table-on-Table Series   
 HU50-T19.7 x 19.7 x 17.712,000
 HU63-T24.8 x 24.8 x 19.712,000
 HU100-T39.4 x 39.4 x 29.510,000
5 Axis - HU-TS Tilt Spindle Series   
 HU100-TS39.4 x 39.4 x 29.510,000
4 Axis - HU Series   
 HU50A19.7 x 19.7 x 17.712,000
 HU63EX24.8 x 24.8 x 19.712,000
 HU80EX31.5 x 31.5 x 24.810,000
 HU10039.4 x 39.4 x 29.510,000
 HU15059.1 x 59.1 x 39.46,000
4 Axis - HPX Series   
 HPX63 II24.8 x 24.8 x 19.712,000

Vertical Machining Centers

SeriesModelSize (inches)Speed (rpm)
5 Axis - Vertex-5X Series   
 Vertex 55X III21.7 x 19.7 x 17.715,000
 Vertex 75X III29.5 x 29.5 x 21.712,000
 Vertex 100X III39.4 x 39.4 x 29.510,000
5 Axis - VL-5X Series   
 VL-5X Series31.5 x 31.5 x 27.612,000
3~4 Axis - Vertex Series   
 Vertex 55 III21.7 x 19.7 x 17.715,000
 Vertex 75 III29.5 x 29.5 x 21.712,000
3~4 Axis - VU Series   
 VU50A19.7 x 19.7 x 17.715,000
 VU65A25.6 x 25.6 x 21.712,000
3~4 Axis - VL Series   
 VL3023.6 x 15.7 x 17.710,000
 VL5039.4 x 19.7 x 17.78,000

Jig Borers

SeriesModelSize (inches)Speed (rpm)
3 ~ 5 Axis Vertical   
 6CN-II47.2 x 31.5 x 19.75,000
 7CN-II59.1 x 39.4 x 23.64,000
 J122078.7 x 47.2 x 31.53,000
 J123098.4 x 59.1 x 39.43,000
 PJ81231.5 x 19.7 x 15.76,000
4 & 5 Axis Horizontal   
 H5D Jidic47.2 x 31.5 x 19.75,000
 H6D Jidic59.1 x 39.4 x 23.64,000

Jig Grinders

ModelSize (inches)Speed (rpm)
J350G13.8 x 9.8 x 9.830,000
300G11.8 x 7.9 x 7.930,000
4GDN15.7 x 11.8 x 11.825,000
6GCN19.7 x 15.7 x 15.720,000
7GAN23.6 x 17.7 x 17.720,000

Thread Grinders

ModelSize (inches)Speed (rpm)
GSE50A19.7 x 19.7 x 39.44,500
GSE50H19.7 x 19.7 x 39.44,500
GSE100A39.4 x 39.4 x 78.73,500
GSE200A59.1 x 59.1 x 118.13,000
GSE320A78.7 x 78.7 x 157.52,500
GSN180iS31.5 x 31.5 x 63.06,000
LMS1500N59.1 x 59.1 x 118.14,000
LMS3000N118.1 x 118.1 x 236.23,000

Contact Information

Mitsui Seiki is dedicated to providing exceptional customer support and service. For any inquiries, technical assistance, or support, please contact Mitsui Seiki at:

Support Contact:
NORTH AMERICA HEADQUARTERS

Mitsui Seiki (U.S.A.), Inc.
563 Commerce Street
Franklin Lakes, NJ 07417
Tel: (201) 337-1300
Fax: (201) 337-3680
info@mitsuiseiki.com
service@mitsuiseiki.com