企業情報

Corporate Overview

Name Gunma Seiko Co., Ltd.
Established July 8, 1968
Paid-in capital ¥10 million
Representative President Yoichi Marumo
Business addresses

Kamikawa Factory

1295-13 Motoabo, Kamikawa-machi,
Kodama-gun, Saitama-ken, Japan 367-0247 [ map ]
TEL.0495-74-0888 (Reception) FAX.0495-74-0987

Fujioka Nishi Factory

1065-1 Naka-Otsuka Aza Takimae, Fujioka-shi,
Gunma-ken, Japan 375-0053 [ map ]
TEL.0274-22-7003 (Reception) FAX.0274-22-7590

GUNMA SEIKO (THAILAND) CO.,LTD.

Pinthong Industrial Estate 3219/10 Moo 6, Tambon
Bowin, Amphur Sriracha, Chomburi 20230 [ map ]
TEL.+66(0)33-005-866~8 FAX.+66(0)33-005-869
Businesses Manufacture and supply of high-precision cold forged parts for transportation equipment, office automation equipment, and leisure related products.
Production ratio by material Aluminum: Approx. 54%, Steel: Approx. 45%, Copper: Approx. 1%
Trade bank Gunma Bank Shin-machi Branch
Saitama Resona Bank Honjo Branch
Japan Finance Corporation for Small and Midium Enterprise Maebashi Branch
Main customers SHOWA
BOSCH
GLOBERIDE
MAX
KYB
YANMAR
CKD
Knorr-Bremse
NSK Steering Systems
SANDEN
SANWA SEIKI
SANYO KOGYO
TOYOTA
(In no particular order)

Corporate History

1968 Gunma Seiko Co., Ltd. established with \2 million in paid-in capital.
1970 Aluminum cold forging begun for motorcycle parts.
1972 Aluminum cold forging developed for fishing tackle spools.
1973 Paid-in capital increased to \8 million.
1975 Patented obtained for water pipe welding saddle production method.
1976 Developed a rod cover single-unit cylinder.
1978 Finished construction of the Isesaki Factory.
1982(S57)
shoujou1
Awarded the 1st
Technology
Development Prize
Awarded the 1st Technology Development Prize from the [Japan Society For Technology of Plasticity].
1985 Developed and applied photosensitive drum (EI tube) production technology.
1991

Awarded the 1st Aluminum
Forging Technology Prize
Developed MTB shock absorber parts.
Awarded the 1st Aluminum Forging Technology Prize from Japan Aluminum Association.
1992 First phase of the Fujioka Nishi Factory completed.
1993 Second phase of the Fujioka Factory completed.
C.I. installed.
1995 Paid-in capital increased to \10 million.
1996s Isesaki Factory combined with the Fujioka Factory.
1997 PRONES production control software installed.
2000 Design of a 630-ton forge press installed.
2002 Establishment of in-company LAN system.
2003 Establishment of integrated production system by introduce of T-6 proccessing equipment.
2004 ISO9001(2000) is acquired.
2007 Relocation of Fujioka Factory to the Kamikawa Factory (Kamikawa town,Saitama Prefecture) completed.
2008 鍛造シミュレーションDEFORM導入
2009 ISO14001(2004)を取得
2011 インド NEWSWAN社と技術支援契約
タイ国にGUNMA SEIKO(THAILAND)設立

Main Facilities

Process Machine name Capacity Qty
Cutoff High-speed metal slitting saw ~φ50 3
Aluminum annealing utoff machine
Pit-type air flow annealing
furnace
500kg 3
Iron annealing SPERIA pit type bright annealing furnace
PIT type annealimg furnace
1.5-tons
1.5-tons
2
1
Lubrication Aluminum automatic lubricating device
Iron automatic lubricating device
5-tons/day
15-tons/day
2
1
Forging Cold forge press 630-tons
400-tons
300-tons
250-tons
160-tons
110-tons
45-tons
400-tons
250-tons
2
3
1
3
3
1
1
1
2
Precision drawing Long hydraulic press 40-tons
30-tons
2
1
Hydraulic press 20-30-tons 2
T-6 Treatment Batch-type aluminum T-6 treatment furnace 300kg 1
Die processing High-speed lathe
Electro discharge machine
Model LS 4
2
Machining NC lathe
Tapping center
Thread rolling machine
Centerless grinder
32
7
2
1