TOP Parts Department
PARTS DIV.
  • SAKURAI has built up a great deal of results and know- how in the processing of various different parts for use in those products that require large, complex processes, and high precision quality as well, thus has met a variety of needs from prototypes through mass production to sup- plies. The machine tools and lines used for processing our products are flexible enough to handle various types of in- houseproductions so can be restructured into various types of mass production lines.The originality of them is certainly ahead of competitors and helps SAKURAI to ac- complish the highly dimensional precision processing by adding the skill of each employee to the colorful technolo- gies.
  • parts

Cars

The division has achieved a great deal of results from the processing of parts, centering at the production of trans- missions, which form the core of an automobile engine. With the background of high level of technology, SAKUR- AI has supplied high-precision, highly functional parts to domestic car makers including overseas counterparts.

  • cars
  • cars
  • cars
  • cars
  • cars

Motorcycles

While progress is being made in the transfer of production to overseas, the division is carrying out mass production of
engine parts related to middle- and large-sized motorcycles. It has a competitive edge, particularly over those products that require the high level of precision so is attempting applicative development.

  • Motorcycles
  • Motorcycles
  • Motorcycles
  • Motorcycles

General-purpose engine parts

The division is taking charge of processing various different engine parts for use in outboard motor and agricultural machi-
nery. It is challenging not only steady product supply but also high precision production in the unit of microns using the special-purpose line.

  • General-purpose engine parts
  • General-purpose engine parts
  • General-purpose engine parts

Prototypes/parts

Always returning to the fundamentals, the di- vision is keeping confidentiality principles and challenging technology development for processing prototypes.
Supplying parts that can withstand the sever- est environment is a proof that SAKURAI does have the ability to develop technology. The division is always in insatiate pursuit of high precision.

5-axis control machining center

5-axis control machining center

Sharp corner machining

Both the male die and the female die are machined in sharp corners.

Sharp corner machining

Thin-ribbed sphere

The ribs have a thickness of 0.4 mm and are arranged in pentagons and hexagons. The protrusions of the pentagons have an anti-bank and can be milled only with the 5-axis control machining center. The protrusions are also designed to protect the ribs.

Thin-ribbed sphere

Eight-tiered sphere

Milled from a single piece of stock. Each component sphere has a minimum clearance of 0.5 mm, and is a dotriacontahedron (formed of pentagons and hexagons) on the outer surface, and a sphere on the inner surface.

Eight-tiered sphere
Eight-tiered sphere

Equipment system

  • General-purpose engine parts
    General-purpose
engine parts
    M/C line
  • Motorcycles
    Motorcycles
    Single-cylinder block line
  • Prototype processing line
  • 試作加工ライン

Our experience in mass production

1)
Passenger car automatic transmissions and transmission cases
8,000 units per month
2)
Motorcycle cylinders
30,000 units per month
3)
Cylinder heads of V6 engines for passengers cars
6,000 units per month
4)
Cylinder heads, head covers, etc. for general-purpose engines and outboard motors
4,000 units per month
5)
Passenger car engine covers
2,000 units per month

Our experience in limited production

1. Fixed-term on-demand production

Support for customers whose production capacity is overwhelmed by demand, based on contracts ranging from around three to twelve months. Examples include
1)Passenger car transmission cases: 16,000 units (8,000 sets) per month under 6-month contracts
2)Cylinder heads for straight-six diesel engines of passenger cars: 100 sets per month over one year
3)Motorcycle cylinder heads: 2,000 units per month over six months

2. Long-term, low-volume production

Support for customers that are outsourcing processes due to reduced output, particularly where production has peaked out and manufacturing equipment and space are being repurposed. Examples include
1)Passenger car transmission cases: 16,000 units (8,000 sets) per month under 6-month contracts
2)Cylinder heads for straight-six diesel engines of passenger cars: 100 sets per month over one year
3)Motorcycle cylinder heads: 2,000 units per month over six months

3. Fabrication of parts and test pieces

1)Automatic transmission valve bodies: 40 units
2)Motorcycle cylinders (old model): 50 units
3)Test pieces to support customer testing of new equipment

4. Fabrication of experimental parts and prototypes

1)Full processing of V8 cylinders blocks for a racing engine
2)Full processing of an experimental CVT transmission case
3)Cutting tests for parts being considered for mass production
The Customers of PARTS DIV.
AISIN AI CO.,LTD.
AISIN AW CO.,LTD.
AISHIN KEIKINZOKU CO., LTD.
ISUZU MOTORS LIMITED
KUBOTA CORPORATION
JATCO LTD.
SUZUKI MOTOR CORPORATION
NIDEC CORPORATION
HIROSHIMA ALUMINUM IND.CO.,LTD.
HONDA MOTOR CO.,LTD.
HONDA R&D CO.,LTD.
HONDA RACING CORPORATION
MITSUBISHI HEAVY INDUSTRIES, LTD.
METTS CORPORATION
YANAGAWA SEIKI CO.,LTD.
YAMAHA MOTOR CO.,LTD.
YANMAR CO., LTD.