1. 1
Mitsui Seiki Kogyo Co., Ltd.
MITSUI SEIKI OverviewMITSUI SEIKI Overview

2. 2
Company Profile
Name
Address
Founded
Capital
Employees
Turnover
Business
6-13, Hachiman, Kawajima-machi, Hikigun,
Saitama, Japan
December 29th
, 1928
948 Million Yen
733 (As of April FY2014)
20.4 Billion yen (As of FY2014)
Machine tools, Air compressors
President Mr. Tetsuji Okuda

3. History
3
20012001

4. Balanced Diversity

5. 5
Global Network
1
2
3
45
6
7
8
9
A
B
MITSUI SEIKI EUROPE LIAISON OFFICE
MITSUI SEIKI(USA)INC.
C E
A
BD
MITSUI SEIKI(USA)INC. WEST COAST BRANCH
OFFICE
MITSUI SEIKI TAIPEI SERVICE CENTER
MITSUI SEIKI (SHANGHAI) SERVICE
CO.,LTD
C
D
E
Domestic Overseas
MITSUI SEIKI (THAILAND) CO.,LTD
F
F
11
22
33
44
55
66
77
88
99
Head Office,Head Office,
Main FactoryMain Factory
Tokyo Head Office,Tokyo Head Office,
Tokyo Sales OfficeTokyo Sales Office
Nagoya SalesNagoya Sales
OfficeOffice
Osaka SalesOsaka Sales
OfficeOffice
Hiroshima Sales OfficeHiroshima Sales Office
Fukuoka SalesFukuoka Sales
OfficeOffice
Sendai SalesSendai Sales
OfficeOffice
MatsumotoMatsumoto
Regional OfficeRegional Office
HamamatsuHamamatsu
Regional OfficeRegional Office

6. 6
Head office and Factory
wajima-machi, Hikigun, Saitama
158,200m2
e ： 66,100m2
ume (per month):
Machine tool about 30 units
Air compressor about 250 units
Precision machine ToolsPrecision machine Tools
CompressorCompressor
Storage, Machine Factory,OfficeStorage, Machine Factory,Office
Main Office, welfare facilityMain Office, welfare facility

7. High Precision
●Identity of Mitsui Seiki
●Result of accumulated know-
how from establishment
Longevity
●Built to last
●Rigid and rugged design
Flexibility
●Every machine is hand-made
●Customized to customer’s
request
Core Competencies

8. 8
Machine Tool FactoryMachine Tool Factory

9. 9
Pursuing Ultimate Accuracy
Temperature ControlTemperature Control
Robust FoundationRobust Foundation In-house ProductionIn-house Production
１
２
３
■Manufacturing Techniques
ScrapingScraping
４
Machine Tool Factory Size: 140m x 100m

10. 10
Complete Temperature Control
Air flow
Return
duct
Dual Layer
Ceiling
Air temperature controlled within ±0.4℃
Dual structure ceilings, conditioned air down through
numerous small holes
Minimum wind at floor level
Minimum temperature difference in both vertical and
horizontal direction

11. 11
Robust Foundation
Over head crane
Piles
Bedrock
Building Foundation
Total of 1,700 piles
1 Meter thick concrete
Assembly foundation completely
isolated from the building foundation
2t Over head cranes for lighter parts
15t Over head cranes for heavier parts
Building
Foundation
Assembly
Foundation
15t Over head
crane
2t Over head
crane
Wall crane
Assembly Foundation

12. 12
Scraping – True Craftsmanship
Required for achieving tolerances which cannot be done by
machining
Continuous procedures of measuring and adjustment until
final completion

13. 13
In-House Production
Critical components such as Spindles, Tables and Ballscrews
are designed and manufactured in house
Large castings are also machined and assembled in house
Deriving accuracy, performance, quality and lead-time control
Issues regarding these major items are therefore quickly and
easily dealt

14. 14
Logistics
Ship out
Unit
Assembly
Manufacturing of parts and assembly done within a single
building
Movement within a stable environment
Air locked shipping bay
・ Avoids outside air reducing temperature change
・ Prevents condensation
Machine ship-out
Shipping bay
Assemblyline5
Assemblyline1
Assemblyline2
Assemblyline3
Assemblyline4
Spindle head
assembly
Largemachineshop
SmallmachineshopUnit
assembly
Air Tool
room
Air

15. 15
Measuring Room
Sub-micron measurements taken in temperatures completely
controlled within 20℃±0.1℃
Production of High precision machines are composed of a
combination of accurate measurement tools and techniques
Mitsui Brand Screw lead measuring machine, 3D-CMC’s and
Roundness Measuring machines

16. 16
Feature and Advantage
Ultra High Precision
Built-to-last
Customized per the customer’s requirements
Full line of 5-axis machining centers and thread grinders
Used in the Cutting-edge Aerospace industries

17. Machine tools lineup
HorizontalHorizontal
MachiningMachining
CenterCenter
HorizontalHorizontal
MachiningMachining
CenterCenter
5-axis5-axis
MachiningMachining
CenterCenter
5-axis5-axis
MachiningMachining
CenterCenter
VerticalVertical
MachiningMachining
CenterCenter
VerticalVertical
MachiningMachining
CenterCenter
HU40A
HU50A
HU63A
HPX63
HU80A
HU100 series
HS8A
H5D
H6D
HW550A
HW630A
FH550R
FH630R
HU50A-5X
HU63A-5X
HU80A-5X
HU100-5X
HU100-5XL
HU100-
5XLL
HU40T
HU50T
HU63T
HS6-T
HS6A-TS
VU50A
VU65A
Vertex55 II
Vertex75 II
Vertex55X II
Vertex75X II
VL30
VL30-5X
VL50
17

18. Machine tools lineup
Jig BorerJig BorerJig BorerJig Borer
Jig GrinderJig GrinderJig GrinderJig Grinder
ThreadThread
GrinderGrinder
ThreadThread
GrinderGrinder
6CN
7CN
J1220
J1230
300G
3GEN
4GDN
6GCN
7GAN
GSE30A
GSE50A
GSE100A/B/H
GSE200A/B/H
GSE320A/B
GSE500A
GSN180iS
GSC100H 18

19. 19
THANK YOUTHANK YOU
For further information please contact :For further information please contact :
Béat RiesBéat Ries
Cell : +1(201) 970-7838Cell : +1(201) 970-7838
bries@mitsuiseiki.combries@mitsuiseiki.com