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   Products
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Tension spring
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   Specification
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All line diameter of Ø0.1 ~ Ø3.0mm
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   Used wire rod
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 SWPB (Piano line)
 SUS304WPB (Stainless line)
 SUS316WPB (Non-magnetic Stainless line)
 PBW (Phosphor bronze line)
 BeCuW (Beryum bronze line) , PEW (Enamel bronze line)
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Horizontal elasticity coefficient
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G
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Super gravity
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I
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 Line diameter
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d
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 Super stress
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 Outer diameter
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Do
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 Weight
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P
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 Central diameter
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Dm
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 Spring constant
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K
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 Inner diameter
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Di
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 Index rate
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C
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 Total tendril
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Nt
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 Stress amendment coefficient
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k'
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 Valid tendril
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Ne
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 Sheer stress
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 Long length
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Nt
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 Stress amendment coefficient
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 Gunning length
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   Spring coefficient calculation :
K = G *  / 8 * Ne * Dm ³
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   Weight calculation :
P = K * (L - l) + Po
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 = k' * 8 * Dm * P/ * d ³
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   응력비 =  
/
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   Super weight calculation :
Po =   * d ³ *  
  / 8 * Dm
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   Stress amendment coefficient :
   k' = {(4 * C-1) - (4 * C-4)} + (0.615/C)
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