Cold Forging

Headers / Forging machines
	Basic features Capability 300t for Headers,300t　for Forgings Max.Cut off Dia. φ32mm for Headers,φ27mm for Forgings Max.K.O. Length 70mm for Headers,120mm for Forgings Layers 1 die 2 blow for Headers,5 die for Forgings Basic accuracy Outer dia.  0.02mm Length 0.1mm nner dia. 0.02mm Coaxial tolerance 0.1mm The number of possession Ｈｅａｄｅｒ 5 sets   Ｆormer 41 sets

Cold forging
	Basic features  Capability 100t～630t Max. dia.  φ75mm Max. length 60mm Layers 1-3 Basic accuracy Outer dia 0.05mm Inner dia 0.05mm Length 0.1mm Coaxial tolerance 0.1mm The number of possession 46 sets

Multi-slide machine（FVC）

Basic features  Capabilit Max.15t High-speed production We have actualized high productivity such as 200 strokes per minute by tying up with equipment markers,using our advanced technologies,and developing our exclusive machines. Productionvolume We manufacture 25 million lock valve spring retainers in a month. We boast one of the highest production outputs in Japan. The number of possession 19 sets

Cutting& Machining

Multi-spindle automatic lathes
	Basic features Max φ26mm Features  High-volume processing within 10 seconds of cycle time The number of possession 19 sets

NC automatic lathes（Bar type／Chukka type）
	Basic features  Max φ32mm Features Highly functional and efficient for various machining processes Highly-accurate secondary processing with special chucks The number of possession 92 sets

Polishing Process

Centerless grinders
	Basic features Max φ80mm Max 100mm Basic accuracy Roundness 0.002mm Cylindricity 0.002mm Surface roughness  0.2Ra High-speed production Top-level speed of through-feed grinding,8m per minute. Longer dress intervals by our uniquely blended grinding wheels. The number of possession Through-feed 27 sets In feeding 34 sets

Double-ended grinders
	Basic features Max φ150mm Thickness 1mm or mor Basic accuracy Parallelism 0.01mm  Flatness 0.01mm High-speed production Top-level speed processing,5m per minute The number of possession 16 sets

Barrel grinders
	Basic features Kind Vortex,Oscillation,Rotary,Centrifugal Basic accuracy Surface roughness 0.05Ra Features We can optimally meet your requirements in any shape and accuracy. The number of possession 16 sets

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President MASANORI RYU

We keep challenging with an eye on the next generation.

In an age of quick-paced globalization and advanced informatization, we try to become a brand new manufacturer which can adapt to the new era. We hasten our pace of preparation for introducing state-of-the-art equipment,cultivating human resources,and developing new technologies and new fields. No matter how the world changes.;however,we believe we should never forget the manufacturer's spirit.We will advance toward the greater goal of emphasizing craftsmanship acquired in our long history, as well as focusing on advanced technology.

独創。 Our history started with this very first tri-car

We started our business producing Mizuno-style tri-cars in 1927. Over the past 80years we have mainly manufactured automobile parts. We take pride in the fact that we have contributed to support the prestige of Japanese cars. Since our establishment we have been constantly nurturing creativity,adopting revolutionary techniques,and organizing our systems to meet any process required. That is why we have gained the deep trust of our customers as leading manufacturer of small precise products from high-volume to low-volume. Furthermore,it is our intention to deepen product originality and to help more customers not only in the auto industry but also other various fields. Furthermore,it is our intention to deepen product originality and to help more customers not only in the auto industry but also other various fields.

革新。 Repeating innovation and creation

Our technologies acquired through the production of Mizuno-style tri-cars have been continuously carried over from generation to generation. They have finally evolved into the high-precision processing technologies which produce highly functional and high-precision products which make the heart of automobiles such as transmissions,steering wheels and air-bags. By breaking away from conventional methods with the motto,"Defending the status quo is like moving backwards",we have been working on new technologies and methods as well as significant quality improvements and cost reduction. Not only do we respond rapidly to your requests,but we will also keep trying to seek to pleasantly surprise you with reactions like "Wow! You can really do it this way!" We will do our best to live up to your expectations.

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History

1927	Started business at Shioiri-town,Mizuho-ward,Nagoya-city,Japan.
1944	Moved our plant to Koromo-town,Toyota-city,Japan to evacuate from the air- raids.
1945	Started business with Toyota Motor Corporation. Started manufacturing auto-engine parts at Katasaka-town, Mizuho-ward,Nagoya-city,Japan.
1951	Joined Kyohokai. (Formerly Tokai Kyohokai,renamed in 1999)
1959	Reorganized and established as Mizuno Tekkosho Company Limited.
1960	Introduced 6-spindle automatic lathes of Schutte,Germany.
1965	Introduced cold forｇing equipments and solidified the foundation for mass productions.
1975	Changed the process for one of the major products,cotters,from cutting to multi-sliding.
1979	Introduced NC lathes.
2000	Established our Kuwana plant.
2002	Acquired ISO9001 at our main plant.
2003	Acquired ISO14001 at our main plant.
2007	Celebrated our 80th anniversary of the foundation.
2011	Acquired ISO/TS16949 at our main plant.
2012	Acquired ISO/TS16949 at our Kuwana plant.

Commendation

2003	Received the"2002 Superior Quality Performance Award"from Toyota Motor Coporation.
2004	Received the"2003 Superior Quality Performance Award"from Toyota Motor Coporation.
2005	Received the"2004 Superior Quality Performance Award"from Toyota Motor Coporation.
2006	Received the"2005 Superior Quality Performance Award"from Toyota Motor Coporation.
2007	Received the 2006 Superior Quality Performance Award"from Toyota Motor Corporation.
2009	Received the"2008 Superior Quality Performance Award"from Toyota Motor Corporation.
2010	Received the"2009 Superior Quality Performance Award"from Toyota Motor Corporation. Received the"2009 Urgent VA Award"from Toyota Motor Corporation.
2011	Received the"2010 Superior Quality Performacne Award"from Toyota Motor Corporation. Received the"2010 Superior Quality Performace Award"from Hino Motor Corporation.
2012	Received the"2011 Superior Quality Performacne Award"from Toyota Motor Corporation. Received the"2011 Superior Quality Performace Award"from Hino Motor Corporation. Received the"2011 Superior Quality Performace Award"from DAIHATSU Motor Corporation. Received the"2011 Superior Quality Performace Award"from Hitachi Automotive Systems
2013	Received the"2012 Superior Quality Performacne Award"from Toyota Motor Corporation. Received the"2012 Quality Excellence Award"from Hitachi Automotive Systems Americas,Inc
2014	Received the"2013 Superior Quality Performacne Award"from Toyota Motor Corporation. Winning quality control excellence prizes particularly consecutive for prize five years"from Toyota Motor Coporation. Received the"2013 Superior Quality Performace Award"from DAIHATSU Motor Corporation.
2015	Received the"2014 Superior Quality Performance Award"from Toyota Motor Coporation. Received the"2014 Superior Quality Performace Award"from Hino Motor Corporation.
2016	Received the"2015 Superior Quality Performance Award"from Toyota Motor Coporation.

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Engine parts

VALVE SPRING RETAINER	VALVE SPRING RETAINER LOCK	VARIABLE VALVE TIMING LOCK PIN
〔Production quantity〕 Monthly 6.00 million	〔Production quantity〕 Monthly 20.00 million	〔Production quantity〕 Monthly 0.80 million

STRAIGHT PIN	RING PIN	SHEET PLUG
〔Production quantity〕 Monthly 17.00 million	〔Production quantity〕 Monthly 18.30 million	〔Production quantity〕 Monthly 0.90 million

Transmission Parts

SPOOL VALVE (Steel)	SPOOL VALVE (Aluminum )	BLOCK CONVETER
〔Production quantity〕 Monthly 5.08 million		〔Production quantity〕 Monthly 1.00 million

CENTER CONVERTER

Other

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