We always have 424 types of tension springs (excluding free sizes) in stock and ready for immediate delivery! A comprehensive lineup created with years of accumulated design know-how and manufacturing technology!
A spring is a functional component that can cause problems even if just one is missing, but surprisingly, designing one takes a considerable amount of time, and it is not uncommon for practical issues to arise. The San-Es series tension coil springs are available in a constant stock of 424 types, with wire diameters ranging from 0.32 to 2.3 mm, outer diameters from 3.2 to 24 mm, and materials including piano wire and stainless steel wire (excluding free-size tension springs). We respond to customer requests with an immediate delivery system. We supply springs with stable performance in small quantities. ◎ How to select springs (1) Determine the material based on the atmosphere and environment in which it will be used. (2) Decide on the required outer shape of the spring. (3) Based on dimensions such as installation, determine an approximate figure for the necessary free length of the spring. (4) Determine the required load when the length is displaced.
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basic information
Product Number: HP▢▢▢-▢▢-▢▢ - Material: JIS G 3522 SWP-A Piano Wire - Outer Diameter: φ3.2 to 24 - Wire Diameter: φ0.32 to 2.3 - Free Length: 11 to 202 - Maximum Load: 1.53 to 158.02N (0.16 to 16.12kgf) Product Number: HS▢▢▢-▢▢-▢▢ - Material: JIS G 4314 SUS304 WP-B Spring Stainless Steel Wire - Outer Diameter: φ3.2 to 24 - Wire Diameter: φ0.32 to 2.3 - Free Length: 11 to 202 - Maximum Load: 1.16 to 126.58N (0.12 to 12.92kgf) ◎ Application Range Standardized cylindrical tension coil springs using piano wire with a wire diameter of φ0.32mm to 2.3mm and stainless steel wire with a wire diameter of φ0.32mm to 2.3mm, commonly used for cold forming. ◎ Heat Treatment and Surface Treatment - Piano Wire: Low-temperature annealing at 180 to 250℃, surface treated with blackening - Spring Stainless Steel Wire: Low-temperature annealing at 250 to 450℃, no surface treatment. ◎ Spring Shape - Winding Direction: Right or Left Wound - Hook Shape: Reverse Round Hook
Price information
Regular price: 490 to 11,200 yen per bag or piece
Price range
P1
Delivery Time
P4
※In the case of direct delivery, it may be possible to deliver within 1 to 3 days.
Applications/Examples of results
◎Our products are used for various purposes by our customers. 【Examples of the Standard Series of San-Ei Springs】 - Machine tool parts - Office automation equipment - Automotive parts - Bicycle parts - Safety valves - Ballpoint pens etc.
catalog（2）
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Company information
Our company has been dedicated to the production of springs as a specialized manufacturer for nearly half a century. In the spring industry, we are known by the standard spring brand "San-Es," and we are considered the "pioneers of standard springs" for being the first to popularize standard springs in the market. In addition to the "San-Es standard springs," we also cater to custom orders for all types of wire springs, including compression springs, extension springs, and torsion springs, as well as lesser-known but highly excellent products such as "special-shaped wire springs," "CWS," and "flexible shafts." We practice our corporate philosophy of "always being sincere and contributing to society through the creation of trusted products," and these products have been continuously loved by many customers over the years. Moving forward, in order to gain further trust from everyone, our company will work together to develop and grow daily, ensuring accurate quality and responding sincerely to customer requests as we engage in "monozukuri" (the art of making things) every day.
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