It is a rare case where a "left-handed" spring is used in a tension spring.
The material used is "Piano Wire Type B, SWP-B," with a wire diameter of Φ5.0. The body part is wound using a heart gold type winding machine, while the hook part is shaped by hand. After heat treatment, an electroless nickel plating is applied as a rust prevention treatment. The winding direction of this spring is "left-handed." To determine the winding direction, if you stand the spring upright and look at it from the side, if the coil material is winding upwards to the right, it is right-handed; if it is winding upwards to the left, it is left-handed (according to JIS standards). For compression springs and tension springs, unless otherwise specified, they will be manufactured as right-handed. In particular, it is very rare for left-handed winding to be adopted for tension springs, and I would like to ask our customers someday why this spring is left-handed. Our company handles the manufacturing, design, and prototyping of tension springs. Please feel free to consult us if you have any concerns. Tsuruoka Spring Co., Ltd. Technical Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com We also support web conferencing.
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Tsuruga Spring Co., Ltd. is a spring manufacturer located in Tsuruoka City, Yamagata Prefecture. We specialize in the design and manufacturing of coil springs, as well as wire forming processing. 1) Our strength lies in our ability to respond quickly from design to prototyping. Are you facing issues such as springs breaking, deforming, or being weak? Our technical staff will respond carefully, so please feel free to consult with us. It's okay even if you don't have drawings. 2) We can accommodate a wide range of wire thicknesses from 0.1mm to 10.0mm. We stock piano wire, stainless steel wire for springs, oil-tempered wire, and phosphor bronze wire. We can also handle special spring materials that are outside JIS standards, such as Herculite and SWIC. Additionally, we can accommodate wire diameters exceeding 10mm through outsourcing. 3) We accept orders from one piece to tens of thousands of pieces. Technical Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com Tsuruga Spring Co., Ltd. 〒997-0011 3-10-25 Takarada, Tsuruoka City, Yamagata Prefecture