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# Loxo.vn ### Conical Compression Spring

Parameters of conical compression springs Physical parameters

• d (wire diameter): This parameter describes the diameter of wire used as material for spring.
• S (shaft): This parameter describes the maximum diameter of spring shaft in industrial applications. Tolerance for this parameter is (+-)2%(indicative).
• De (Larger External Diameter): External diameter at large end of the spring. Tolerance for this parameter is (+-)2%(indicative).
• Ds (Smaller Internal Diameter): Internal diameter at small end of the spring. Tolerance for this parameter is (+-)2%(indicative)
• H (hole): This is the minimum diameter of the hole in which spring can work. Tolerance for this parameter is (+-)2%(indicative).
• Ln (Block): Maximal length of a spring after total blocking. For most conical springs this value equals double wire diameter. Tolerance for this parameter is (+-)2%(indicative).
• L0 (free length): Free length of compression springs is measured in its uncompressed state after previous one time blocking. Tolerance for this parameter is (+-)2%(indicative).
• R (spring rate): This parameter determines spring's resistance, while it is working. It is measured in 1 DaN/mm = 10 N/mm. Tolerance for this parameter is (+-)15%(indicative).
• L1 & F1 (length at force F): Force F1 at length L1 can be calculated from equation : F1 = (L0-L1) * R. Equation derrived from previous for calculating L1 : L1 = L0 - F1/R. Materials

• I (Inox steel): Inox 18/8 mark Z10 CN 18.09.

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