Compression spring calculator
Calculate spring rate, maximum safe load, deflection and solid height for your compression spring. Enter the dimensions and get engineering results instantly.
Formel
Symbole
Rechenbeispiel
Berechnet mit derselben Engine wie der Rechner oben, unter Verwendung der Startwerte des Formulars.
Enter wire diameter, outer diameter, free length and coil count. The calculator applies the Wahl factor and automatically validates spring index and shear stress.
Load limits use the real allowable stress of each catalog material, so the result already tells you whether the design is manufacturable.
Need a quote? Open the same configuration in the full designer for tiered pricing and a technical drawing.
Schnelle Abstimmung: mehr oder weniger Kraft
- Dickerer Draht
- Kleinerer Außendurchmesser
- Weniger wirksame Windungen
- Dünnerer Draht
- Größerer Außendurchmesser
- Mehr wirksame Windungen
So messen Sie Ihre Feder
- Measure the wire diameter (d) with calipers or a micrometer, away from the ends.
- Measure the outer diameter (OD) across the coils. The mean diameter is OD minus d.
- Measure the free length (FL) with no load, end to end.
- Count the total number of coils. Closed and ground ends reduce the active coil count.
- Identify the end type: closed and ground, closed, double closed or open.
Werkstoffmoduln und Dichte
| Werkstoff | Schubmodul G | Elastizitätsmodul E | Dichte |
|---|---|---|---|
| Kohlenstoffstahl (MW) | 11.5 × 10⁶ psi (79.3 GPa) | 29.5 × 10⁶ psi (203.4 GPa) | 7.85 g/cm³ |
| Edelstahl 302 (SS302) | 10.0 × 10⁶ psi (69.0 GPa) | 28.0 × 10⁶ psi (193.0 GPa) | 7.90 g/cm³ |
| Edelstahl 17-7 PH (SS177) | 11.0 × 10⁶ psi (75.8 GPa) | 29.4 × 10⁶ psi (203.0 GPa) | 7.81 g/cm³ |
| Edelstahl 316 (SS316) | 10.0 × 10⁶ psi (69.0 GPa) | 28.0 × 10⁶ psi (193.0 GPa) | 7.98 g/cm³ |
| Ölschlussvergütet MB (OT) | 11.2 × 10⁶ psi (77.2 GPa) | 29.5 × 10⁶ psi (203.4 GPa) | 7.85 g/cm³ |
| Chrom-Silizium (CS) | 11.2 × 10⁶ psi (77.2 GPa) | 29.5 × 10⁶ psi (203.4 GPa) | 7.85 g/cm³ |
| Hartgezogen (HD) | 11.5 × 10⁶ psi (79.3 GPa) | 29.5 × 10⁶ psi (203.4 GPa) | 7.85 g/cm³ |
| Phosphorbronze (PB) | 6.0 × 10⁶ psi (41.4 GPa) | 14.9 × 10⁶ psi (103.0 GPa) | 8.86 g/cm³ |
| Berylliumkupfer (BC) | 7.0 × 10⁶ psi (48.3 GPa) | 18.6 × 10⁶ psi (128.0 GPa) | 8.25 g/cm³ |
| Chrom-Vanadium (CV) | 11.2 × 10⁶ psi (77.2 GPa) | 29.5 × 10⁶ psi (203.4 GPa) | 7.85 g/cm³ |
Häufig gestellte Fragen
What is the spring rate of a compression spring?
It is the force needed to compress the spring by one unit of length, expressed in lbf/in or N/mm. A 57 lbf/in spring takes 57 lbf for every inch of compression, approximately linearly until the coils touch.
How do I make a compression spring stronger?
Increase the wire diameter (the effect scales with the fourth power), reduce the outer diameter, or reduce the number of active coils. Any of the three changes raises the spring rate.
What is solid height?
It is the length of the spring when all coils touch. The spring cannot work past that point, and healthy designs keep clearance between the maximum working deflection and solid height.
Konstruieren Sie die Feder und erhalten Sie ein Sofortangebot
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