昌和発條製作所 List of Products and Services

"Isn't Sanko Springs the manufacturer of San-Es standard springs?" That's right, but that's not all; we are actually also skilled in "custom springs." The proportion of custom spring production in our annual output reaches 91.1% (as of 2021). It might be fair to say that we are more proficient in custom springs. Especially in the case of torsion springs made from irregular wire materials, we boast industry-leading technical expertise and production capacity. We are happy to listen to your concerns! Sanko Springs does not easily say "we can't." Please leave your "custom springs" to Sanko Springs Manufacturing!

Twisted springs (kick springs, torsion springs) made using square wire, which is a type of shaped wire, have significantly stronger torque compared to springs made from regular round wire. "San-Ei Springs" boasts industry-leading technology and production capacity in this "shaped wire (square wire) twisted spring." Additionally, we have a wide range of processing tools and square wire materials, allowing for speedy prototype responses. To introduce you to our "shaped wire (square wire) twisted springs," we have created a brochure, so please take a look. We also include application examples. We have printed booklets available, so feel free to request one.

CWS refers to a compression spring formed by coiling flat wire into a continuous wave shape. 【Features】 ■ The structure receives load evenly around the coil circumference, allowing for stable and parallel "deflection" (stroke) both up and down. ■ It can handle loads significantly greater than those of conventional compression springs (compression springs), enabling a lower installation height. This contributes to the miniaturization and weight reduction of products. ■ It is more suitable for smaller strokes or static use than for larger strokes. A clear example is that by replacing multiple compression springs used in the clutch section by automobile manufacturers with a single CWS, we were able to resolve issues such as "high labor costs and time-consuming assembly" and "troublesome maintenance." Additionally, compared to disc springs or wave washers punched from sheet material, it offers better yield, lower costs for mold forming, and the ability to accommodate shape changes and special plate thicknesses, making it a noteworthy alternative to disc springs and wave washers. *Since the load is smaller compared to disc springs, it cannot be simply replaced, but it can simplify complicated assembly processes depending on the application.

We process all kinds and shapes of materials according to their purpose and produce high-precision products.

CWS stands for Coiled Wave Spring, which is a compression spring formed from flat wire. It has stability that prevents tilting when compressed and exerts a large force with a small amount of deformation, making it suitable for various applications such as miniaturization of products, quality improvement, precise force retention and control, and suppression of design errors and play. Now, as a standard product that can be delivered quickly and inexpensively from a single piece, "CWS" has been newly introduced by San-Ei Spring. 【Features of CWS】 ◎ Capable of producing large loads with small deformation The height of the "spring" can be shortened, allowing for miniaturization of products and space-saving in the "spring" section. ◎ Stable deflection (compression) Due to its structure that uniformly bears the load across the entire spring, it is strong yet does not tilt when compressed. ◎ Reduce Almost no scrap is generated in the production of CWS. *For more details, please download the PDF materials or feel free to contact us. ★ A printed version is also available. Product samples can be provided. *When downloading the catalog, please note that if you fill in anything in the "Other" section of "Reasons for Interest" other than the options provided, it will not reach us. If you have specific inquiries, please fill in the "Other" section under "Purpose."