Precision Spring « 中央発條株式会社


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Precision Spring

Various kinds of springs are made available.
Reliability of our springs are well known for their usages under harsh conditions and the durability required for automobiles.

VALVE / ARC / BRAKE TENSION / TORSION / SPRINGS

Springs are largely categorized into compression, tension, torsion and formed wire springs. They are used in many different ways in automobiles for various important functions. Valve spring used in the engine is one of the typical precision springs.

Valve springs

Valve springs
Applied to the automotive engines, the valve springs are subject to a crucial repeated load as well as lightweight and cost reduction requirement. Chuo has a variety of materials suitable for customer’s requests with our simulation technologies developed to meet wide range of needs.
Heat resistant springs

Heat resistant springs
Under circumstances over 600 C, the springs can keep their functions, based on our R & D on materials. These springs are mainly used for exhaust mufflers.
Ark springs

Ark springs
The shape is of ark. When these springs are arranged in circular form, especially for disk brakes, it is economically better than short straight springs are set.

FLAT SPRING

Wide variety of types, shapes are available.
Chuo technology enables creation of the most complex and sophisticated shapes.

Superfine coiling

Superfine coiling
Using superfine dies and highly reliable presses, precise coiling can be achieved with a tolerance of 1 micron in a room where the temperature is kept at 20 C +/- 1.
Fine blanking

Fine blanking
With fine precision presses, Chuo can offer pressed products in small tolerances. When pressed by fine blanking, there needs no additional treatments such as milling and polishing.

FORMED WIRE CLAMP / SPIRAL SPRING

Other than wire and small thin flat springs, there are parts bearing spring functions for automobile use.

Flat spring-clamps

Flat spring-clamps
Developed with a unique design concept, flat spring-clamps are made to control unpleasant vibrations in the compartment. Any shape can be realized with our most advanced technology.
Spiral springs

Spiral springs
Used maily in the seat reclining adjusters, they store sufficient energy in a limited space to bounce the seat-back to desired position.

HV Belleville spring, CVT spring

As fuel consumption improvement requirement grows, more complex specification is requested. The high technology of CHUHATSU has been used as important functional components inside hybrid units and CVT transmission.

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